Samacheer Kalvi Class 12 Computer Applications Solutions Chapter 13 Network Cabling

Part I

Choose The Correct Answers

 

Question 1. What does ARPANET stand for?
(a) American Research Project Agency Network
(b) Advanced Research Project Area Network
(c) Advanced Research Project Agency Network
(d) American Research Programs And Network
Answer: (c) Advanced Research Project Agency Network
In simple words: ARPANET means Advanced Research Project Agency Network. It was an early computer network that helped create the internet.

🎯 Exam Tip: Remember full forms for common acronyms like ARPANET, WWW, LAN, WAN, UTP, STP, and NIC, as these are frequently tested.

 

Question 2. WWW was invented by
(a) Tim Berners Lee
(b) Charles Babbage
(c) Blaise Pascal
(d) John Napier
Answer: (a) Tim Berners Lee
In simple words: Tim Berners Lee made the WWW. It's how we access websites today.

🎯 Exam Tip: Knowing the inventors of key technologies like the WWW is crucial for scoring well in general knowledge and computer science questions.

 

Question 3. Which cable is used in cable TV to connect with setup box?
(a) UTP cable
(b) Fibre optics
(c) Coaxial cable
(d) USB cable
Answer: (c) Coaxial cable
In simple words: To connect your TV to a cable box, you use a coaxial cable. It helps send the TV signal.

🎯 Exam Tip: Understand the specific uses of different cable types (coaxial, UTP, fiber optic) as they are distinct in their applications and characteristics.

 

Question 4. Expansion of UTP is
(b) Uninterrupted Twisted Protocol
(c) Unshielded Twisted Pair
(d) Universal Twisted Protocol
Answer: (c) Unshielded Twisted Pair
In simple words: UTP means Unshielded Twisted Pair. It's a kind of network cable that doesn't have extra shielding.

🎯 Exam Tip: Pay close attention to abbreviations and their full forms, especially in technical subjects, to avoid common mistakes.

 

Question 5. Which medium is used in the optical fibre cables to transmit data?
(a) Microwave
(b) infra red
(c) light
(d) sound
Answer: (c) light
In simple words: Optical fiber cables use light to send information. Light travels quickly, making data transfer very fast.

🎯 Exam Tip: Remember that fiber optic cables are unique because they transmit data using light, unlike copper cables which use electrical signals.

 

Question 6. Which of the following is a small peripheral device with a sim slot to connect the computers to Internet?
(a) USB
(b) Dongles
(c) Memory card
(d) Mobiles
Answer: (a) USB
In simple words: A small USB device can have a SIM card inside to get internet on your computer. It acts like a portable internet connector.

🎯 Exam Tip: Understand the function of mobile broadband devices, often connected via USB, that provide internet access using a SIM card.

 

Question 7. Which connector is used in the Ethernet cables?
(a) RJ11
(c) RJ61
(d) RJ45
Answer: (d) RJ45
In simple words: Ethernet cables use RJ45 connectors. They help plug your computer into the internet network.

🎯 Exam Tip: Differentiate between RJ11 (phone lines) and RJ45 (Ethernet networks) connectors based on their size and number of pins.

 

Question 8. Which of the following connector is called as champ connector?
(a) RJ11
(b) RJ21
(c) RJ61
(d) RJ45
Answer: (b) RJ21
In simple words: RJ21 is another name for a champ connector. It's a special type of plug used in some data connections.

🎯 Exam Tip: Memorize alternate names or common aliases for technical components, as questions might use less common terminology.

 

Question 9. How many pins are used in RJ45 cables?
(a) 8
(b) 6
(c) 50
(d) 25
Answer: (a) 8
In simple words: RJ45 cables have 8 tiny pins inside. These pins help send computer data.

🎯 Exam Tip: Remember the pin count for common connectors like RJ45 (8 pins) and RJ11 (6 pins) to answer numerical questions accurately.

 

Question 10. Which wiring standard is used for connecting two computers directly?
(a) straight Through wiring
(b) Cross Over wiring
(c) Rollover wiring
Answer: (b) Cross Over wiring
In simple words: To connect two computers straight to each other, you use a cross-over cable. It makes sure they can talk to each other directly.

🎯 Exam Tip: Understand the difference between straight-through (device to switch) and cross-over (device to device) cables and their applications.

 

Question 11. Pick the odd one out from the following cables
(a) roll over
(b) cross over
(c) null modem
(d) straight through
Answer: (c) null modem
In simple words: "Null modem" is different because the others (roll-over, cross-over, straight-through) are ways to wire Ethernet cables. A null modem cable connects two computers directly through their serial ports.

🎯 Exam Tip: Classify network cables based on their wiring (straight-through, cross-over, roll-over) and their function (null modem for serial connections).

 

Question 12. Match the following
1. Ethernet – Port
2. RJ45 connector – Ethernet
3. RJ45 jack – Plug
4. RJ45 cable – 802.3
(a) 1, 2, 4, 3
(b) 4, 1, 3, 2
(c) 4, 3, 1, 2
(d) 4, 2, 1, 3
Answer: (d) 4, 2, 1, 3
In simple words: Ethernet goes with 802.3. RJ45 connector is for Ethernet. RJ45 jack is a port. RJ45 cable has a plug.

🎯 Exam Tip: For matching questions, carefully identify the relationship between each pair. Sometimes the numbering in the options refers to the order of answers, not the original question number.

Part II

Short Answers

 

Question 1. Write a note on twisted pair cable?
Answer: Twisted pair cable is a type of network cable that has two or more insulated wires twisted together. This twisting helps to reduce interference. Initially, these cables worked at a speed of 10 Mbps, known as 10BASE-T. Over time, they improved to handle faster speeds of 100 Mbps, and this version was called 100BASE-TX.
In simple words: Twisted pair cables have wires twisted together. This makes them work better. They started at 10 Mbps speed and later improved to 100 Mbps.

🎯 Exam Tip: When describing cable types, mention their physical characteristics (twisted wires), initial and improved speeds, and common applications.

 

Question 2. What are the uses of USB cables?
Answer: USB (Universal Serial Bus) cables are widely used to connect various devices to computers, such as keyboards, mice, and other peripheral devices. A smaller version, called Micro USB, is specifically designed for mobile devices like smartphones, GPS units, and digital cameras. USB is a very versatile connection standard.
In simple words: USB cables connect many things like keyboards, mice, and cameras to your computer. Small Micro USBs are for phones and other small gadgets.

🎯 Exam Tip: Focus on the versatility of USB for connecting different peripherals and the size variations like Micro USB for smaller devices.

 

Question 3. Write a note on the types of RJ45 connectors?
Answer: RJ45 connectors use specific wiring schemes to connect the wires inside them. There are two main wiring standards, T-568A and T-568B, that show how to arrange the twisted-pair cables at each end of the connector. These standards ensure proper network communication.
In simple words: RJ45 connectors have rules for how wires go inside them. The two main ways are called T-568A and T-568B, which help connect network cables correctly.

🎯 Exam Tip: For technical notes, always include key terms (like T-568A and T-568B for RJ45 wiring) and explain their purpose briefly.

 

Question 4. What is an Ethernet port?
Answer: An Ethernet port is a special jack on a computer or network device where an Ethernet cable is plugged in. It acts as the connection point for wired network communication, allowing the device to send and receive data over a local area network (LAN).
In simple words: An Ethernet port is a socket on your computer. You plug an Ethernet cable into it to connect to the internet or a network.

🎯 Exam Tip: Clearly define network components like Ethernet ports and their basic function, mentioning both where they are found and what they do.

 

Question 5. What is the use of the Crimping tool?
Answer: A crimping tool is a physical device used to securely attach a patch wire to an Ethernet connector. It works by puncturing the connector and pressing the wires firmly into place, ensuring a stable and reliable connection for network cables.
In simple words: A crimping tool helps you put the wires of a network cable into its plug very tightly. It makes sure the cable is ready to be used.

🎯 Exam Tip: Describe the function of tools like the crimping tool by explaining its purpose (connecting wires) and how it achieves that (puncturing/setting).

 

Question 6. What are the types of twisted pair cables?
Answer: There are two main types of twisted pair cables: Unshielded Twisted Pair (UTP) and Shielded Twisted Pair (STP). UTP cables are widely used for internet connections with modems because they are less expensive and simpler to install and maintain compared to coaxial cables. STP cables have extra shielding to protect against interference.
In simple words: There are two kinds of twisted pair cables: UTP and STP. UTP is cheaper and used a lot for internet. STP has extra cover to stop problems.

🎯 Exam Tip: When comparing types of cables, highlight their key differences (shielding), advantages (cost, ease of use), and common applications.

 

Question 7. What is meant by champ connector?
Answer: A champ connector refers to an RJ-21 connector, which is a type of electrical connector used for data communication. It has 50 pins in total, with 25 pins on each end. This connector is also known as an Amphenol connector, named after its manufacturer.
In simple words: A champ connector is another name for an RJ-21 connector. It has 50 pins and is used for connecting data wires, sometimes also called an Amphenol connector.

🎯 Exam Tip: When asked for definitions, always provide the core identity (RJ-21 connector) and any common aliases (Amphenol connector), along with a key characteristic (50 pins).

Part III

Explain In Brief Answer

 

Question 1. Write a note on crossover cables.
Answer: Crossover cables are special Ethernet cables used to connect two devices of the same type, such as two computers, directly without needing an intermediate device like a hub or switch. The simplest way to make one is by wiring one end with the T568A standard and the other end with the T568B standard, which swaps the transmit and receive pairs. This ensures proper communication between the two devices.
In simple words: Crossover cables connect two computers directly, no extra box needed. They are wired a special way, like T568A on one side and T568B on the other, to make the wires talk to each other correctly.

🎯 Exam Tip: Emphasize the direct connection capability of crossover cables and the purpose of their unique wiring (swapping transmit/receive pairs).

 

Question 2. Explain a short note on RJ45 connector?
Answer: The RJ45 connector is a small plastic plug used to connect Ethernet cables to network devices, allowing internet access. It resembles a telephone jack but is slightly wider. The "RJ" in RJ45 stands for Registered Jack, and "45" refers to its specific interface standard. Ethernet cables are often called RJ45 cables because they commonly use this connector.
In simple words: An RJ45 connector is a small plastic plug for Ethernet cables to connect to the internet. It's like a phone plug, but wider, and helps link computers to a network.

🎯 Exam Tip: When explaining a connector, describe its appearance, common use, and the meaning of its name/number if applicable.

 

Question 3. What are the differences between serial and parallel ports?
Answer: Serial and parallel ports differ in how they send data and their physical design. A serial port sends data one bit at a time, uses fewer pins (typically 9), and moves bits inline. A parallel port, however, sends multiple bits at once, uses more pins (typically 25), and moves bits next to each other. Parallel ports are faster for short distances because they transfer more data simultaneously.
In simple words: Serial ports send data one piece at a time, like a narrow road. Parallel ports send many pieces at once, like a wide road. Parallel ports are faster but need more wires.

🎯 Exam Tip: For comparison questions, present differences in clear, distinct points, focusing on key aspects like data transmission method, pin count, and speed characteristics.

 

Question 4. What is meant by a null modem cable?
Answer: A null modem cable is a type of RS-232 serial cable used to connect two computers directly, allowing them to communicate without needing a modem. It achieves this by crossing the data transmission lines within the cable, making it appear as if a modem is present. This cable enables direct device-to-device communication for specific purposes like data transfer or system configuration.
In simple words: A null modem cable lets two computers talk to each other directly using a serial port, without needing an internet modem. It's like a direct phone line between them.

🎯 Exam Tip: Define null modem cables by their function (direct computer-to-computer connection) and the key component they replace (a modem in serial communication).

Part IV

 

Question 1. What is meant by Registered Jack? Explain briefly the types of Jacks.
Answer: A Registered Jack (RJ) is a standard network interface used in telecommunications for connecting data and telephone equipment. It describes not only the physical connector (plug and jack) but also its wiring arrangement. Common types include:

• RJ-11: This is the most popular type, often found in homes and offices for connecting telephone and landline systems. It typically has 6 pins, with two used for transmission, two for receiving, and two often kept reserved. Some pins handle positive and negative terminals.
• RJ-14 and RJ-61: The RJ-14 connector is similar to RJ-11 and is also used for telephone lines, typically with 6 pins. The RJ-61, on the other hand, uses 8 pins and is employed with twisted pair cables in modular connections.
• RJ-21: This connector is larger, featuring 50 pins (25 at each end), and is also known as a champ connector or Amphenol connector. It's generally used for data communication in larger trucking applications. Each type of RJ serves a specific purpose in networking.

In simple words: A Registered Jack (RJ) is a standard plug and socket for network wires. RJ-11 is for phones. RJ-14 is like RJ-11 but can have 6 pins. RJ-61 has 8 pins for other network wires. RJ-21 is a big connector with 50 pins, used for heavy data work.

🎯 Exam Tip: Differentiate between RJ types by their common application (telephone, Ethernet, data trucking), pin count, and any alternative names they might have.

 

Question 2. Explain wiring techniques used in Ethernet cabling.
Answer: Ethernet cabling uses different wiring techniques to connect devices, often based on color codes, to ensure proper data flow. The three main types are:

• Straight-Through Wiring: In this method, the colored wires are in the exact same sequence at both ends of the cable (following T568A or T568B standards). This is commonly used to connect a computer or network card to a hub or switch. It provides a simple, direct physical link.
• Cross-over Wiring: This technique is used to directly connect two similar Ethernet devices, such as two computers, without needing a hub. The transmitting and receiving wire pairs are swapped at opposite ends of the cable. Null modem cables are a type of crossover cable.
• Roll-over Wiring: Roll-over cables, also known as console or Yost cables, have an opposite pin arrangement at each end. All the wires are "rolled over" to different positions. These are typically used to connect a computer's console port to a network device for configuration and programming. Roll-over cables are often flat and light blue. Each technique serves a specific connection purpose.

In simple words: Ethernet cables use different ways to arrange wires for different connections. Straight-through cables connect computers to a hub. Cross-over cables connect two computers directly by swapping some wires. Roll-over cables are for setting up network devices using a special port.

🎯 Exam Tip: Understand the unique wiring purpose and application of each Ethernet cable type (straight-through for dissimilar devices, crossover for similar devices, rollover for console access).

 

Question 3. Explain about RJ45 connector.
Answer: An RJ45 connector is a small plastic plug that is essential for connecting Ethernet cables to network devices, allowing access to the internet. It looks like a phone jack but is slightly wider. The "RJ" in its name means Registered Jack, and "45" refers to its specific interface standard. Each RJ45 connector has eight pins, arranged as an 8-position, 8-contact (8P8C) modular plug, which is then inserted into the Ethernet port of a network card.
Wiring Schemes and Color Codes: Inside the connector, there are eight small places for wires. These eight wires come in different colors. There are two main wiring standards, T-568A and T-568B, that dictate how these wires should be arranged at each end of the cable. Although an RJ45 cable has four pairs of wires, Ethernet typically uses only two of these pairs (orange and green) for data transmission. The remaining two pairs (blue and brown) can be used for other purposes, such as ISDN or phone connections. This structured wiring ensures proper data communication.
In simple words: The RJ45 connector is a common plastic plug for Ethernet internet cables. It has 8 pins inside, arranged by color codes (like T-568A or T-568B), to connect computers to networks.

🎯 Exam Tip: Provide a comprehensive explanation by including the connector's physical description, its components (8 pins, 8P8C), wiring standards, and how it handles different wire pairs for specific functions.

 

Question 4. Explain the components used in Ethernet cabling.
Answer: Ethernet cabling relies on several key components to establish network connections:
1. Patch Cable (Twisted Pair): These cables are typically made up of eight wires, often in various solid and striped colors. They come in different categories like Cat 5, Cat 6, and Cat 7, which indicate their performance levels. Ethernet cables, with male RJ45 connectors at each end, are essentially patch cables that carry data signals. Interestingly, while newer categories support faster speeds, historically, increasing the physical size of older cables could lead to slower transmission speeds if not properly balanced.
2. RJ45 Connector: This is a small plastic plug crucial for Ethernet connections. It allows the bare wires of a cable to be connected inside it, making the cable ready to plug into a network. An RJ45 connector looks similar to a phone jack but is slightly wider. The "RJ" stands for Registered Jack, and "45" signifies a specific interface standard. Each RJ45 connector features eight pins, forming an 8-position, 8-contact (8P8C) modular plug, which is then inserted into an Ethernet port.
3. Ethernet card and Port: An Ethernet card, also known as a Network Interface Card (NIC), allows a computer to connect to a network and send data. These can be expansion cards (like PCI Ethernet cards inserted into a motherboard slot) or built-in components in modern computers. Wireless Ethernet cards also exist, using radio waves. An Ethernet port is the opening on the Ethernet card where the RJ45 connector is plugged in. It's also called an RJ45 jack and is found on various devices like personal computers, laptops, routers, and hubs for wired network connections.
4. Crimping Tool: This is a physical tool used in the crimping process, which joins two or more pieces of metal or wire by deforming them. Specifically, for Ethernet cabling, a crimping tool is used to connect the patch wire securely to the Ethernet connector. The tool punctures the connector and sets the wires firmly inside, creating a reliable electrical connection. This process ensures the cable is properly terminated and ready for use in a network.
In simple words: Ethernet cabling uses four main parts: Patch Cables (the wires), RJ45 Connectors (the plugs), Ethernet Ports (where you plug them in), and a Crimping Tool (to attach the plugs to the wires). Together, these let computers connect and share information.

🎯 Exam Tip: For questions about components, list each one and provide a brief, clear explanation of its function and importance within the system.

 

Question 5. Explain the type of Network cables?
Answer: There are many types of cables used in computer networking. Here we will discuss six different kinds of cables. Each type has specific uses and benefits for connecting devices.
1. Coaxial Cables:

• These cables are used to connect televisions to home antennas and carry information at 10 Mbps.
• They are divided into two main types: thinnet and thicknet cables.
• Inside, these cables have a copper wire covered with insulation for protection.
• Coaxial cables can be challenging to install and maintain because they are often thick and heavy.
• They are named "coax" because of their shared axis. Today, coaxial cables are also used for connecting dish TV setup boxes to televisions.
• Some common names for these cables include Media Bridge 50-feet Coaxial cable and Amazon basics CL2-Rated Coaxial cables.

Twisted Pair Cables:

• This type of cable has two or more insulated wires twisted together.
• It initially supported speeds of 10 Mbps (using 10BASE-T cable).
• Later, the cable improved to support 100 Mbps and was renamed 100BASE-TX.
• Eventually, it improved further to 10 Gbps and was named 10GBASE-T.
• This twisted cable has 8 wires twisted together to prevent electromagnetic interference.
• It can be difficult to place all eight wires in a single unit, so they are twisted to form one cohesive wire.
• There are two main types of twisted pair cables: Unshielded Twisted Pair (UTP) and Shielded Twisted Pair (STP).
• UTP cables are commonly used today as modem cables for the Internet because they are cheaper and easier to install and maintain compared to coaxial cables.
• STP cables are similar to UTP but include an extra protective jacket to shield the wires from external interference.

Fiber Optics:

• This cable is different from coaxial and twisted pair cables.
• Unlike the other two, which have insulating material outside and copper inside, fiber optic cables use strands of glass.
• They transmit information using pulses of light, making them very fast.
• These cables are mainly used in Wide Area Networks (WANs) to connect computers over very long distances.

Ethernet Cables:

• Ethernet cable is the most common type of network cable, mainly used for connecting computers or devices in homes or offices.
• It connects wired devices within a Local Area Network (LAN) to share resources and access the Internet.

In simple words: Network cables connect devices. Types include Coaxial (for TV, 10 Mbps), Twisted Pair (for internet, UTP and STP, up to 10 Gbps), Fiber Optics (for long distances, uses light), and Ethernet (common for home and office networks).

🎯 Exam Tip: When describing network cables, remember to mention their key characteristics like speed, materials, and typical uses. Focus on what makes each type distinct.

 

Question 1. Which year were the co-axial cables invented?
(a) 1880
(b) 1890
(c) 1990
(d) 2000
Answer: (a) 1880
In simple words: Co-axial cables, which are used for things like TV, were first made in the year 1880.

🎯 Exam Tip: Remember key historical dates for important technologies to answer invention-related questions correctly.

 

Question 2. The latest version of USB is ................
(a) 2.0
(b) 4.0
(c) 5.0
(d) 3.0
Answer: (d) 3.0
In simple words: The newest common version of USB connection mentioned here is 3.0.

🎯 Exam Tip: Keep up-to-date with common technology versions, as questions often refer to current or recent standards.

 

Question 3. Co-axial cables transfer the information in ................
(a) 10 kbps
(b) 10 Mbps
(c) 10 GBPS
(d) 10 TBPS
Answer: (b) 10 Mbps
In simple words: Co-axial cables typically move data at a speed of 10 Megabits per second.

🎯 Exam Tip: Pay attention to the units (kbps, Mbps, Gbps) when dealing with data transfer speeds, as they indicate different magnitudes.

 

Question 4. .......... cable connects wired devices within the local area network for sharing the resources and accessing the Internet.
(a) wireless Cable
(b) Ethernet cable
(c) Coaxial Cable
(d) Twisted Wire
Answer: (b) Ethernet cable
In simple words: An Ethernet cable is what links devices in a local network to share things and get online.

🎯 Exam Tip: Understand the primary function of each cable type. Ethernet is specifically designed for local area network (LAN) connections.

 

Question 5. Co-axial cables are made up of ................
(a) Steel
(b) Iron
(c) Copper
(d) Aluminium
Answer: (c) Copper
In simple words: Co-axial cables, like those for TV, have a main wire made of copper.

🎯 Exam Tip: Knowing the basic materials of different cables helps identify their properties and uses. Copper is a common conductor in many cables.

 

Question 6. ............ are used for connecting the television with the setup box.
(a) UTP
(b) STP
(c) Twisted Cable
(d) Coaxial cables
Answer: (d) Coaxial cables
In simple words: Coaxial cables are typically used to link a television to its setup box.

🎯 Exam Tip: Connect specific cable types with their most common applications, like coaxial cables for television connections.

 

Question 7. ............ is a type of cable with two or more insulated wires twisted together.
Answer: Twisted pair cables

🎯 Exam Tip: Identify key definitions. The twisting of wires is a defining feature of twisted pair cables, done to reduce interference.

 

Question 8. The .......... uses light to transmit the information from one place to another.
(a) Fibre cable
(b) Network cable
(c) optic cable
(d) None of these
Answer: (c) optic cable
In simple words: An optic cable, also known as a fiber optic cable, sends information using light instead of electricity.

🎯 Exam Tip: Understand the fundamental principle of fiber optic cables: they transmit data using light pulses, offering high speed over long distances.

 

Question 9. Assertion (A): 8 wires of the twisted cable are twisted Reason (R): To ignore electromagnetic interference.
(a) A is true R is the reason
(b) A, R both false
(c) A is false R is true
(d) A is true, R is not the reason
Answer: (a) A is true R is the reason
In simple words: The statement that twisted cables have 8 twisted wires is correct, and the reason for twisting them is to stop interference from electricity.

🎯 Exam Tip: For Assertion-Reason questions, first check if both statements are individually true, then evaluate if the reason correctly explains the assertion.

 

Question 10. ............ are used for long-distance transmission and at a high cost.
(a) Coaxial cable
(b) Network cable
(c) Multimode cable
(d) Single-mode cables
Answer: (d) Single-mode cables
In simple words: Single-mode cables are designed for sending data very far, but they are also more expensive.

🎯 Exam Tip: Single-mode fiber optic cables are known for their ability to transmit data over extremely long distances, often at a higher cost due to the precision required.

 

Question 11. STP stands for ................
(a) Shielded Turn paper
(b) Shielded Twisted pair
(c) Soft Turn Photo
(d) Short Time processing
Answer: (b) Shielded Twisted pair
In simple words: STP is short for Shielded Twisted Pair, a type of cable with extra protection.

🎯 Exam Tip: Memorize common acronyms in computer networking, as they are frequently tested. STP and UTP are crucial in cabling.

 

Question 12. The serial port will send ............ at one time.
(a) 2 bit
(b) Null
(c) 1 bit
(d) 5 bit
Answer: (c) 1 bit
In simple words: A serial port sends data one bit at a time, like sending letters one by one.

🎯 Exam Tip: Understand the difference between serial and parallel communication. Serial ports send data sequentially (one bit at a time).

 

Question 13. Find the wrongly matched pair.
(a) coaxial cables - TV
(b) Twisted pair cables - ATP, UTP
(c) USB cables - Peripheral devices, Multimode
(d) Serial port - Mouse
Answer: (c) USB cables - Peripheral devices, Multimode
In simple words: The incorrect match is "USB cables - Peripheral devices, Multimode" because while USB cables connect peripheral devices, "Multimode" refers to fiber optic cables, not USB.

🎯 Exam Tip: Carefully analyze each pair. Ensure all parts of the description correctly match the item, especially when multiple concepts are combined.

 

Question 14. The Null modem Cables are an example of the crossover cables.
(a) coaxial
(b) crossover cables
(c) parallel cables
(d) Serial cable
Answer: (b) crossover cables
In simple words: Null modem cables are a specific type of crossover cable.

🎯 Exam Tip: Remember that null modem cables are a specialized form of crossover cables used for direct device-to-device communication without a modem.

 

Question 15. The ............ is the basic component of the Local Area Network (LAN)
(a) parallel cables
(b) Serial cable
(c) coaxial
(d) Ethernet cable
Answer: (d) Ethernet cable
In simple words: Ethernet cables are the main parts of a Local Area Network (LAN) system.

🎯 Exam Tip: Recognize Ethernet cables as the foundational physical connection for most wired Local Area Networks.

 

Question 16. The two types of fiber optic cables are ............ and ............
Answer: Single-mode, Multi-mode
In simple words: Fiber optic cables come in two main kinds: single-mode and multi-mode.

🎯 Exam Tip: Distinguish between single-mode (long distance, single light path) and multi-mode (shorter distance, multiple light paths) fiber optic cables.

 

Question 1. The RJ45 Ethernet connector is a small plastic cup which will be used to connect the wire inside the connector and ready to use to connect the Internet.
Answer: RJ45 Ethernet connector
In simple words: The RJ45 Ethernet connector is a small plastic piece that holds network wires, preparing them to connect to the internet.

🎯 Exam Tip: Remember that the RJ45 connector is essential for linking Ethernet cables to devices and networks.

 

Question 2. The RJ45 connector has eight small pins inside to connect eight small wires in the patch cable. The eight cables have eight different colours.
Answer: RJ45 connector
In simple words: The RJ45 connector has eight small pins inside, each connecting to a different colored wire in the cable.

🎯 Exam Tip: The 8 pins and 8 wires are key characteristics of an RJ45 connector, crucial for proper data transmission in Ethernet cables.

 

Question 3. The Ethernet port is the jack where the Ethernet cable is to be connected.
Answer: Ethernet port
In simple words: An Ethernet port is the socket where an Ethernet cable plugs in.

🎯 Exam Tip: Differentiate between the cable (Ethernet cable) and the socket it plugs into (Ethernet port).

 

Question 4. Ethernet port will be there in both the computers and the LAN port.
Answer: Ethernet port
In simple words: An Ethernet port is found on both computers and LAN network devices.

🎯 Exam Tip: Understand that Ethernet ports are found on all devices that need to connect to a wired network, including computers and network infrastructure like routers.

 

Question 5. The crimping tool is a physical tool which is used to connect the patch wire and the Ethernet connector(RJ45).
Answer: crimping tool
In simple words: A crimping tool is a physical device used to attach the network wire to the Ethernet connector.

🎯 Exam Tip: Know the function of specific tools like the crimping tool, which is used for physically terminating network cables with connectors.

 

Question 6. A Registered Jack (RJ) is a network interface used for connecting different data equipment and telecommunication devices.
Answer: Registered Jack (RJ)
In simple words: A Registered Jack (RJ) is a standard connection point for network and telephone equipment.

🎯 Exam Tip: The term "Registered Jack" (RJ) refers to a standardized physical network interface for telecommunication or data equipment.

 

Question 7. RJ11 jack is mainly used in telephone and landlines.
Answer: RJ11
In simple words: An RJ11 jack is the kind of connector mostly used for telephones.

🎯 Exam Tip: Differentiate between RJ11 (for telephones) and RJ45 (for Ethernet) based on their common uses and number of pins.

 

Question 8. Coaxial cable is used to transfer the information in 10 Mbps.
Answer: Coaxial
In simple words: Coaxial cables can move information at 10 Megabits per second.

🎯 Exam Tip: Remember the typical data transfer rates associated with different cable types, such as 10 Mbps for coaxial cables.

 

Question 1. What is the purpose of network cables?
Answer: Network cables are used to transfer data and information from one computer to another. They act as the physical pathway for communication between devices in a network. This allows computers to share files, resources, and access the internet.
In simple words: Network cables help computers send information and data to each other.

🎯 Exam Tip: When asked about purpose, clearly state the primary function (data transfer) and optionally add context like sharing resources.

 

Question 2. What is the use of coaxial cable?
Answer: Coaxial cables are mainly used for connecting a television with a setup box. They are also used in some older computer networks for transferring data. These cables are designed to carry high-frequency signals with minimal loss.
In simple words: Coaxial cables connect TVs to setup boxes.

🎯 Exam Tip: Focus on the most common application of coaxial cables, which is for television and video connections.

 

Question 3. How many wires are there in the twisted cable? Why?
Answer: A twisted pair cable typically has 8 wires, which are twisted into 4 pairs. These wires are twisted together to reduce electromagnetic interference (EMI) and crosstalk between adjacent pairs. This twisting helps maintain signal quality over distance.
In simple words: Twisted cables have 8 wires, twisted to stop electrical noise from messing up the signal.

🎯 Exam Tip: The number of wires (8) and the reason for twisting (to prevent interference) are crucial points for this question.

 

Question 4. What are the two types of twisted pair cables?
Answer: The two types of twisted pair cables are Unshielded Twisted Pair (UTP) and Shielded Twisted Pair (STP). UTP cables are more common and flexible, while STP cables have an additional metallic shield for better noise reduction.
In simple words: The two kinds of twisted pair cables are UTP (Unshielded) and STP (Shielded).

🎯 Exam Tip: Clearly state and differentiate between UTP and STP by mentioning the presence or absence of shielding.

 

Question 5. Expand ARPANET.
Answer: ARPANET stands for Advanced Research Project Agency Network. It was a pioneering computer network that laid the groundwork for the modern internet.
In simple words: ARPANET means Advanced Research Project Agency Network.

🎯 Exam Tip: For expansion questions, ensure you provide the full, correct form of the acronym.

 

Question 6. What is ARPANET?
Answer: ARPANET was the predecessor of the modern Internet. It was developed by the U.S. Department of Defense's Advanced Research Projects Agency (ARPA) in the late 1960s to facilitate communication and resource sharing among researchers.
In simple words: ARPANET was the first version of the internet that came before what we use today.

🎯 Exam Tip: Understand ARPANET's historical significance as the precursor to the internet and its role in developing network protocols.

 

Question 7. What is the use of USB cables?
Answer: USB (Universal Serial Bus) cables are used to connect a wide range of peripheral devices to computers, such as keyboards, mice, printers, external hard drives, and smartphones. They provide both data transfer and power supply. This makes them very versatile for connecting various devices.
In simple words: USB cables connect devices like keyboards, mice, and phones to a computer.

🎯 Exam Tip: List several common uses of USB cables to show a comprehensive understanding of their versatility.

 

Question 8. What is the use of parallel cables?
Answer: Parallel cables were traditionally used to connect devices like printers and other disk drivers to computers. They transmit multiple bits of data simultaneously over separate wires, making them faster for certain applications than older serial ports, although they are less common now. This parallel data transfer was efficient for older peripherals.
In simple words: Parallel cables were used to connect printers and disk drives to computers.

🎯 Exam Tip: Note that parallel cables are older technology, primarily associated with printers and parallel port disk drives, sending data multiple bits at a time.

 

Question 9. What are the two types of fiber-optic cable?
Answer: The two types of fiber-optic cables are Single-mode (like 100BaseBx) and Multimode (like 100BaseSX). Single-mode cables are for longer distances and higher bandwidth, while multimode cables are for shorter distances.
In simple words: The two kinds of fiber-optic cables are single-mode and multi-mode.

🎯 Exam Tip: Remember the two main categories of fiber optic cables and their primary difference: single-mode for long distances and multimode for shorter distances.

 

Question 10. How serial port and parallel port differ?
Answer: A serial port sends data one bit at a time, in a sequence, like a single-lane road. In contrast, a parallel port sends multiple bits (for example, 8 or 13 bits) simultaneously at one time, much like a multi-lane highway. This difference affects their speed and use cases, with parallel often being faster for large data chunks locally. This simultaneous transfer gives parallel ports an advantage for certain tasks.
In simple words: A serial port sends data one bit at a time, but a parallel port sends many bits (like 13) all at once.

🎯 Exam Tip: The key distinction is the number of bits transferred concurrently: serial (one bit) versus parallel (multiple bits).

 

Question 11. What is the use of serial and parallel interface?
Answer: Serial and parallel interface cables are used to connect various components, helping computers connect to the internet and other systems. Serial interfaces are good for long-distance communication, while parallel interfaces are better for short-distance, high-speed data transfer to devices like printers. These interfaces allow different parts of a computer system to communicate effectively.
In simple words: Serial and parallel cables help connect computers to the internet and other devices.

🎯 Exam Tip: Highlight that both interfaces facilitate connection to the internet and system components, but with different data transmission methods.

 

Question 12. What is the purpose of cross-over cable?
Answer: A cross-over cable is used to directly connect two network devices of the same type, such as two computers or two network switches, without needing an intermediate device like a hub or router. It "crosses over" the transmit and receive signals. This allows for direct communication without a third party.
In simple words: A cross-over cable connects two similar network devices directly, without a hub.

🎯 Exam Tip: Emphasize "same type" devices and the absence of a hub as the main purpose of a crossover cable.

 

Question 13. What is RJ Network?
Answer: An RJ (Registered Jack) network refers to the use of standardized physical network interface connectors, such as RJ11 for telephones or RJ45 for Ethernet, to build a network infrastructure. It's a system that uses these specific jacks and plugs for communication. This standardization ensures compatibility and proper connection.
In simple words: An RJ network is a system that uses standard connectors, like RJ45, for communication.

🎯 Exam Tip: Define "RJ" as Registered Jack and explain that it refers to standard connectors used in various networks like telephone and Ethernet.

 

Question 14. Where is the RJ11 cable used?
Answer: An RJ11 jack is mainly used in telephone and landline connections. It is smaller than an RJ45 connector and typically has six pins, though usually only two or four are used for voice communication. This makes it suitable for analog telephone lines.
In simple words: RJ11 cables are mostly used for connecting telephones and landline phones.

🎯 Exam Tip: Clearly associate RJ11 cables with telephone and landline connections to avoid confusion with other RJ types.

 

Question 15. What is the use of a crimping tool?
Answer: A crimping tool is used to connect the patch wire and the Ethernet connector, like an RJ45. It physically presses (crimps) the connector onto the end of a cable, puncturing the wire's insulation and making a secure electrical connection. This ensures reliable data transmission.
In simple words: A crimping tool attaches network wires to connectors.

🎯 Exam Tip: Explain that a crimping tool's main function is to securely fasten a connector to a cable, ensuring proper contact for data flow.

 

Question 16. What is an Ethernet port?
Answer: An Ethernet port is the jack or socket on a device where an Ethernet cable is plugged in to connect to a wired network. These ports are found on computers, routers, switches, and other network-enabled devices, allowing them to send and receive data. It's the physical point of connection for a wired network.
In simple words: An Ethernet port is the place on a computer or device where you plug in an Ethernet cable.

🎯 Exam Tip: Describe the Ethernet port as the physical connection point for Ethernet cables, essential for wired network access.

 

Question 17. What is an Ethernet cable?
Answer: An Ethernet cable is a standard network cable that serves as the basic component of a Local Area Network (LAN). It is used to connect devices like computers, routers, and switches within a local area, enabling them to communicate and share data. These cables are fundamental for establishing wired network connections.
In simple words: An Ethernet cable is the main wire used to connect devices in a local network.

🎯 Exam Tip: Emphasize that Ethernet cables are the fundamental physical medium for wired LAN connections, facilitating data exchange.

 

Question 18. What is the purpose of using Fiber optic cable?
Answer: Fiber optic cables are used for high-speed data transmission over long distances, especially in Wide Area Networks (WAN). They transmit data using light pulses through thin glass or plastic fibers, offering higher bandwidth and less signal loss compared to traditional copper cables. This makes them ideal for modern, fast internet connections.
In simple words: Fiber optic cables send data very fast and far, mainly used in large networks.

🎯 Exam Tip: The main purposes of fiber optic cables are long-distance transmission, high speed, and use in WANs, leveraging light for data transfer.

 

Question 19. What is a dongle?
Answer: A dongle is a small, portable peripheral device that plugs into a computer or other device to provide additional functionality, such as wireless internet connectivity (mobile broadband). It often resembles a USB flash drive and is designed to be easily carried around. This small device acts as a bridge for connectivity.
In simple words: A dongle is a small device, often like a USB stick, that gives a computer extra features, like internet access.

🎯 Exam Tip: Define a dongle as a small peripheral device that adds functionality, specifically mentioning mobile broadband as a common use.

 

Question 20. How the internet is connected through a dongle?
Answer: The internet is connected through a dongle by inserting a SIM card into its dedicated slot. The dongle then acts as a modem, establishing a connection to the mobile network and allowing the computer to access the internet wirelessly. It converts the mobile network signal into a format the computer can use. This provides internet access on the go.
In simple words: You put a SIM card into a dongle, which then works like a modem to give your computer internet from a mobile network.

🎯 Exam Tip: Explain the process by mentioning the SIM card and the dongle's function as a modem to connect to mobile internet.

Abbreviation:

Here are some common abbreviations and what they stand for in the context of computer networking:
1. ARPANET - Advanced Research Project Agency Network
2. WWW - World Wide Web
3. W3C - World Wide Web Consortium
4. LAN - Local Area Network
5. WAN - Wide Area Network
6. UTP - Unshielded Twisted Pair
7. STP - Shielded Twisted pair
8. NIC - Network Interface Card
9. USB - Universal Serial Bus
10. RJ - Registered Jack
11. 8P8C - 8-position, 8-contact

 

Find The Odd One On The Following

Question I. (a) Media Bridge (b) 50feet coaxial cable (c) 10BASE-T (d) CL2
Answer: (c) 10BASE-T
In simple words: 10BASE-T refers to a specific Ethernet standard for twisted-pair cabling, while the others are names or types of coaxial cables or related components.

🎯 Exam Tip: To identify the odd one out, understand the category each option belongs to. 10BASE-T specifies an Ethernet standard, not a physical cable name or type like the others.

 

Question 2. (a) 100BaseBX (b) 100BaseSX (c) WAN (d) 10 Base T
Answer: (c) WAN
In simple words: WAN stands for Wide Area Network, which is a type of network. The other options (100BaseBX, 100BaseSX, 10 Base T) are names of specific cabling standards for Ethernet.

🎯 Exam Tip: Differentiate between network types (like WAN) and specific network cabling standards (like 100BaseBX or 10 Base T).

 

Question 3. (a) Keyboard (b) Monitor (c) Mouse (d) peripheral devices
Answer: (b) Monitor
In simple words: A monitor is an output device. Keyboard and mouse are input devices, and "peripheral devices" is a general category that includes input, output, and storage devices.

🎯 Exam Tip: Group items based on their function or category. A monitor is primarily an output display, distinct from input devices or a general term for external devices.

 

Question 4. (a) Smartphones (b) GPS devices (c) Digital cameras (d) Mouse
Answer: (d) Mouse
In simple words: Smartphones, GPS devices, and digital cameras are typically connected using Micro USB or USB-C. A mouse is usually connected via a standard USB cable or wirelessly, but the other three are common mobile devices that use smaller USB types.

🎯 Exam Tip: Focus on the common connection types for each device. Mobile devices often use smaller USB variants, while a mouse typically uses a standard USB-A connector.

 

Question 5. (a) Speakers (b) Infra Red (c) Blue tooth (d) Wifi
Answer: (a) Speakers
In simple words: Speakers are an output device. Infra Red, Bluetooth, and Wifi are all wireless communication technologies used for transmitting data.

🎯 Exam Tip: Identify the core function: speakers are hardware for sound output, while the others are methods of wireless data transfer.

 

Question 6. (a) RJ45Connector (b) UTP Cable (c) coaxial cable (d) plastic covering
Answer: (d) plastic covering
In simple words: RJ45 connectors, UTP cables, and coaxial cables are all specific types of networking components. "Plastic covering" is a general descriptive term for a part of a cable, not a distinct component like the others.

🎯 Exam Tip: Look for items that belong to a specific technical category. Plastic covering describes a material, while the others are names of complete parts or cable types.

 

Question 7. (a) USB cable (b) RJ45 Connector (c) Ethernet Ports (d) Crimping Tools
Answer: (a) USB cable
In simple words: USB cables are for universal serial bus connections. RJ45 connectors, Ethernet ports, and crimping tools are all components specifically related to Ethernet networking.

🎯 Exam Tip: Group items by their primary technology. RJ45, Ethernet, and crimping tools are specific to Ethernet, while USB is a broader, general-purpose connection.

 

Question 8. (a) White Green (b) White Red (c) White Orange (d) White brown
Answer: (b) White Red
In simple words: The standard color codes for twisted-pair Ethernet cables include white-green, white-orange, and white-brown. "White Red" is not a standard color pair used in these cables.

🎯 Exam Tip: Recall the standard color-coding schemes (T568A/B) for Ethernet cables. These schemes use specific pairs like orange, green, blue, and brown, each with a solid and striped wire.

 

Question 9. (a) Cat 5 (b) Cat 6e (c) Cat 7 (d) Cat 5e
Answer: (b) Cat 6e
In simple words: Category 5 (Cat 5), Category 5e (Cat 5e), and Category 7 (Cat 7) are actual standards for Ethernet cables. "Cat 6e" is not a recognized standard; it's generally either Cat 6 or Cat 6a (augmented).

🎯 Exam Tip: Be familiar with the official "Category" standards for Ethernet cables, such as Cat 5, Cat 5e, Cat 6, Cat 6a, and Cat 7. "Cat 6e" is often a misnomer.

 

Question 10. (a) RJ-11 (b) RJ-21 (c) RJ-08 (d) RJ-45
Answer: (c) RJ-08
In simple words: RJ-11, RJ-21, and RJ-45 are standard Registered Jack connectors used for telecommunications and networking. RJ-08 is not a standard Registered Jack designation.

🎯 Exam Tip: Remember the common RJ (Registered Jack) standards like RJ-11 (phone), RJ-45 (Ethernet), and RJ-21 (multi-line telecom). Others may be non-standard or less common.

 

Question 11. (a) Registered Jack (b) Mobile (c) 6pin (d) Landlines
Answer: (b) Mobile
In simple words: Registered Jack, 6-pin configurations, and landlines are all related to traditional wired telecommunications connections. "Mobile" refers to wireless, portable devices, which are different.

🎯 Exam Tip: Categorize the terms. The first three relate to fixed-line communication hardware, while "Mobile" signifies wireless portability.

 

Question 12. (a) ChampConnector (b) Amphenol Connector (c) Wireless Connector (d) RJ21
Answer: (c) Wireless Connector
In simple words: Champ connectors, Amphenol connectors, and RJ21 are all types of physical, wired connectors. A "wireless connector" implies a different method of connection without physical cables.

🎯 Exam Tip: Distinguish between physical, wired connection components and methods of wireless communication. The term "wireless connector" describes a functionality rather than a specific physical connector type in the same way the others do.

 

Question 13. (a) Champ over (b) Cross Over (c) Straight Through (d) Roll Over
Answer: (a) Champ over
In simple words: Cross-over, Straight-through, and Roll-over are all standard wiring configurations for Ethernet cables. "Champ over" is not a recognized wiring type.

🎯 Exam Tip: Focus on standard Ethernet cable wiring types. Cross-over, Straight-through, and Roll-over define how wires are arranged for different network connections.

 

Question 14. (a) T568A (b) T568B (c) Tx, Rx lines (d) RJ-28
Answer: (d) RJ-28
In simple words: T568A and T568B are common wiring standards for Ethernet cables, and Tx/Rx lines refer to transmit/receive pairs within them. RJ-28 is not a common or standard Registered Jack type like RJ-11, RJ-45, or RJ-21.

🎯 Exam Tip: Familiarize yourself with standard wiring schemes (T568A/B) and common RJ connector types (RJ-11, RJ-45). RJ-28 is an uncommon or non-existent standard.

 

Question 15. (a) Twisted pair (b) UTP (c) FTP (d) STP
Answer: (c) FTP
In simple words: Twisted pair, UTP (Unshielded Twisted Pair), and STP (Shielded Twisted Pair) are all types of physical cables. FTP (File Transfer Protocol) is a network protocol, not a cable type.

🎯 Exam Tip: Distinguish between cable types (physical media) and network protocols (software rules for data transfer). FTP is a protocol, not a cable.

 

Choose The Incorrect Pair:

Question 1. a) Media Bridge 50-feet Coaxial cable, Amazon basicsCL2-Rated Coaxial cables. b) Unshielded Twisted Pair and Shielded Twisted pair. c) USB cables and Parallel cables d) Single-Mode and Multimode
Answer: (c) USB cables and Parallel cables
In simple words: USB cables are for serial data transfer, while parallel cables are for parallel data transfer. They are distinct and not typically paired as a combined category or related type. The other options correctly pair similar or related items.

🎯 Exam Tip: Evaluate if the two items in each option are related categories or types. USB is serial, parallel is parallel, making them a mismatch as a combined type.

 

Question 2. a) Serial and Parallel cables b) Patch Cable, RJ45 Connector c) Ethernet Ports, Crimping Tool d) Coaxial cable, Serial Port
Answer: (d) Coaxial cable, Serial Port
In simple words: Coaxial cables are mainly used for high-speed data and video (like cable TV or older Ethernet), while a serial port is a type of interface for slower, sequential data communication. They don't typically go together.

🎯 Exam Tip: Consider the primary use and characteristics of each item. Coaxial cables and serial ports are functionally very different and rarely used in conjunction for common purposes.

 

Question 3. a) Ethernet cable and serial cable b) RJ45 plug, Ethernet connector. c) RJ45 jack, Ethernet Port d) RJ45, 802.3
Answer: (a) Ethernet cable and serial cable
In simple words: Ethernet cables are used for local area networks, and serial cables are for sequential data transfer (like old modems or console connections). These are different types of cables for different purposes.

🎯 Exam Tip: Focus on the primary application. Ethernet cables are for high-speed networking, while serial cables have different, typically slower, data transfer uses.

 

Question 4. a) RJ-11, RJ-45 b) RJ-45 and RJ47 c) RJ-14 and RJ-61 d) RJ-21, RJ-28
Answer: (b) RJ-45 and RJ47
In simple words: RJ-45 is a standard connector. However, RJ47 is not a standard registered jack connector type. The other pairs consist of recognized RJ standards.

🎯 Exam Tip: Familiarity with common RJ standards (RJ-11, RJ-14, RJ-21, RJ-45, RJ-61) helps in identifying non-standard or incorrect listings.

 

Question 5. a) USB cables, Peripheral devices b) Coaxial cables, 10 Mbps c) Ethernet port, LAN port d) Parallel port, 100BaseSX
Answer: (d) Parallel port, 100BaseSX
In simple words: Parallel ports are older interfaces, often for printers, and are not associated with modern fiber optic Ethernet standards like 100BaseSX. This pairing is inconsistent in terms of technology and speed.

🎯 Exam Tip: Consider the historical context and technological capabilities. Parallel ports are slow and older, while 100BaseSX refers to fast fiber optic Ethernet, making them a mismatched pair.

 

Match The Following

Question 1. Match the following: A) Tim Berners Lee -1) WAN B) Coaxial cables – 2) WWW C) Twisted pair – 3) CL2 Related coaxial D) Fiber optics cable – 4) STP
(a) 1234
(b) 2 31 4
(c) 4 3 2 1
(d) 2 3 4 1
Answer: (d) 2 3 4 1
In simple words: Tim Berners Lee invented the World Wide Web (WWW). Coaxial cables are often rated with standards like CL2. Twisted pair cables can be of the STP (Shielded Twisted Pair) type. Fiber optics cables are used for Wide Area Networks (WAN).

🎯 Exam Tip: For matching questions, break down each item and recall its direct association. For example, Tim Berners Lee is famous for WWW, and STP is a type of twisted pair.

 

Question 2. Match the following: A) Coaxial cables – 10gbps B) Twisted pair – 100 BASE-BX C) Fiber optics cable – 100 GBASE-T D) Ethernet Cable -10 Mbps
(a) 1234
(b) 2 31 4
(c) 4 3 2 1
(d) 2 3 4 1
Answer: (c) 4 3 2 1
In simple words: Coaxial cables typically offer 10 Mbps. Twisted pair cables use the 100 GBASE-T standard for higher speeds. Fiber optic cables can reach speeds like 100 BASE-BX. Ethernet cables are commonly used for 10gbps networks. It's important to remember that technology evolves, so these speeds represent common applications.

🎯 Exam Tip: Match cable types with their typical speeds or common standards. Ethernet cables are broad, but specific categories (Cat 5, 6, 7) determine exact speeds. Coaxial cables for TV were often 10 Mbps.

 

Question 3. Match the following: A) RJ45 connector -1) Crimping Tool B) Ethernet -2) Small 8 jack inside C) Expansion card -3) NIC D) RJ45 Cable -4) Ethernet cable
(a) 1234
(b) 2 31 4
(c) 4 3 2 1
(d) 2 3 4 1
Answer: (d) 2 3 4 1
In simple words: The RJ45 connector uses a crimping tool to attach. Ethernet is connected via a Network Interface Card (NIC). An expansion card is like a NIC, and an RJ45 cable is an Ethernet cable with a small 8-pin jack inside.

🎯 Exam Tip: Understand the relationship between networking components. A crimping tool is for connectors, NICs are Ethernet cards, and an RJ45 cable is a type of Ethernet cable.

 

Question 4. Match the following: A) Ethernet Technology – RJ45, 802.3 B) RJ45 Connector(male) – RJ45 plug, Ethernet connector, 8P8C connector C) Ethernet Port – LAN port, Ethernet Port D) RJ45 Cable – Ethernet cable
(a) 1234
(b) 2 31 4
(c) 4 3 2 1
(d) 2 3 4 1
Answer: (a) 1234
In simple words: Ethernet technology uses RJ45 connectors and follows standards like 802.3. A male RJ45 connector is also called an RJ45 plug or an 8P8C connector. An Ethernet port is also known as a LAN port. An RJ45 cable is a type of Ethernet cable. All options are correctly matched pairs.

🎯 Exam Tip: Many networking terms are interchangeable or directly related. For example, "RJ45 plug" and "8P8C connector" refer to the same component.

 

Question 5. Match the following: A) RJ11 Jack – Peripheral devices B) RJ45 Connector – Telephones and landlines C) USB Cables – Crimping Tool D) Cross over cable – Null modem Cables
(a) 1 2 3 4
(b) 2 31 4
(c) 4 3 2 1
(d) 2 3 4 1
Answer: (d) 2 3 4 1
In simple words: RJ11 jacks are mainly used for telephones and landlines. RJ45 connectors are for Ethernet, used with peripheral devices. USB cables are connected using a crimping tool. Cross-over cables are often used as null modem cables.

🎯 Exam Tip: Carefully consider the primary function and context of each item. RJ11 for phones, RJ45 for Ethernet, crimping for cable termination, and crossover for direct device connection.

 

Short Answers

Question 1. Write a note on coaxial cables?
Answer: Coaxial cables were created in the late 1980s. These cables are used to connect television sets to home antennas. They are also used to transfer information at 10 Mbps. Inside, they have a copper wire covered with insulation for protection. They are a good choice for some data transfer needs.
In simple words: Coaxial cables are old cables, like those for TV. They transfer data at 10 Mbps and have a protected copper wire inside.

🎯 Exam Tip: When describing a cable type, always include its purpose, speed, and basic structure (e.g., copper wire, insulation).

 

Question 2. What is mean by Expansion card?
Answer: An expansion card is a separate circuit board, sometimes called a PCI card. It is inserted into a special slot (PCI slot) on a computer's motherboard. These cards add new features or capabilities to the computer, such as better graphics or network connectivity.
In simple words: An expansion card is a small board put into a computer to add new functions, like better graphics or internet access.

🎯 Exam Tip: Define an expansion card by its physical form (circuit board), where it plugs in (PCI slot/motherboard), and its purpose (adding functionality).

 

Question 3. Mention the different types of cables used to connect the computer on Network?
Answer: Computers can be connected to a network using various types of cables. These include wired media like Unshielded Twisted Pair (UTP), Shielded Twisted Pair (STP), Co-axial cables, and Optical fiber. Wireless media such as Infra Red, Bluetooth, and WiFi also provide connectivity. Each type has different properties suitable for specific network needs.
In simple words: Computers connect to networks using cables like UTP, STP, Coaxial, and Fiber Optic, or wirelessly using Infrared, Bluetooth, or WiFi.

🎯 Exam Tip: List both wired and wireless communication methods. For wired, mention the main types: twisted pair (UTP/STP), coaxial, and fiber optic.

 

Question 4. List the type of Network cables
Answer: Here are the main types of network cables:
1. Coaxial Cables
2. Twisted Pair Cables
3. Fiber Optics
4. USB Cables
5. Serial and Parallel cables
6. Ethernet Cables
In simple words: Network cables include Coaxial, Twisted Pair, Fiber Optics, USB, Serial, Parallel, and Ethernet types.

🎯 Exam Tip: Ensure your list is comprehensive and includes common cable types used for various networking purposes, from basic data transfer to high-speed connections.

 

Question 5. Give the Pin details of RJ-11?
Answer: An RJ-11 connector typically has 6 pins, though often only two or four are used. Two pins are for transmitting data, and two pins are for receiving data. The other two pins are usually kept unused or reserved. The two active pins will have positive and negative terminals, essential for phone line operation.
In simple words: RJ-11 connectors have 6 pins. Two pins send information, two pins receive it, and the other two are usually not used.

🎯 Exam Tip: For pin details, state the total number of pins, how many are used for specific functions (transmit/receive), and mention any unused/reserved pins.

 

Question 6. What are the two types of twisted-pair cables?
Answer: There are two main types of twisted-pair cables:
1. Unshielded Twisted Pair (UTP)
2. Shielded Twisted Pair (STP)
These cables are common in networking, with UTP being widely used due to its lower cost and ease of installation.
In simple words: The two types of twisted-pair cables are Unshielded Twisted Pair (UTP) and Shielded Twisted Pair (STP).

🎯 Exam Tip: Simply list the two types of twisted-pair cables: UTP and STP. A brief note on their use or key difference is a good addition.

 

Question 7. What is the use of UTP?
Answer: UTP (Unshielded Twisted Pair) cables are widely used today as modern cables for internet connections. They are popular because they are less expensive to buy, install, and maintain compared to coaxial cables. This makes them a cost-effective solution for many networking needs. These cables help transmit data reliably for everyday internet use.
In simple words: UTP cables are used for internet connections because they are affordable and easy to install and maintain.

🎯 Exam Tip: Focus on UTP's main advantages: cost-effectiveness and ease of use, which contribute to its widespread adoption for internet connectivity.

 

Question 8. Write about Fiber Optics
Answer: Fiber optics cable is different from other cables because it transmits information using pulses of light through strands of glass. Unlike traditional cables that use copper wires and insulating material, fiber optic cables are designed for very high-speed and long-distance data transmission. They are widely used in Wide Area Networks (WANs) to connect computers over vast distances. This technology makes it possible to send a lot of information quickly.
In simple words: Fiber optic cables send data using light through glass strands. They are fast and good for long distances, used in big networks like WANs.

🎯 Exam Tip: Highlight the key features of fiber optics: uses light/glass, high speed, long distance, and common use in WANs.

 

Question 9. What are the two types of fiber optic cables available,
Answer: There are two main types of fiber optic cables available:
1. Single-mode (100BaseBx)
2. Multimode (100BaseSX)
These types differ in how light travels through them, affecting distance and speed.
In simple words: The two types of fiber optic cables are Single-mode (100BaseBx) and Multimode (100BaseSX).

🎯 Exam Tip: Simply list the two main types of fiber optic cables and their corresponding base standards.

 

Question 10. What is the use of a Single-mode Cable?
Answer: Single-mode cables are used for transmitting data over very long distances. They are also typically more expensive than multimode cables. The single path for light allows for less signal loss and higher bandwidth over extended ranges. This makes them ideal for connections between cities or large network segments.
In simple words: Single-mode cables are used for sending data very far away, but they cost more.

🎯 Exam Tip: Remember that single-mode cables are characterized by long-distance transmission and higher cost due to their precision.

 

Question 11. What is the use of Multi-Mode Cable?
Answer: Multimode cables are used for transmitting data over short distances. They are generally less expensive than single-mode cables and are also easier to maintain and install. These cables allow multiple paths for light, which is suitable for shorter runs within a building or campus network. This makes them a practical choice for local connections.
In simple words: Multimode cables are used for sending data over short distances. They are cheaper and easier to install.

🎯 Exam Tip: Keep in mind that multimode cables are best for short-distance connections due to their lower cost and simpler installation.

 

Question 12. What is the use of Micro USB?
Answer: Micro USB is a smaller version of the standard USB connector. It is primarily used for connecting mobile devices like smartphones, GPS devices, and digital cameras. It allows these devices to connect to computers for charging, data transfer, and communication. Its compact size makes it suitable for small electronic gadgets.
In simple words: Micro USB is a small USB type used to connect mobile phones, GPS, and cameras for charging and data.

🎯 Exam Tip: Emphasize Micro USB's small size and its primary use with compact mobile and portable electronic devices.

 

Question 13. What is the use of cross-over Cable?
Answer: A crossover cable is used to connect two network devices of the same type directly to each other without needing a hub or switch. For example, it can connect two computers directly or two network devices directly. The internal wiring of a crossover cable swaps the transmit and receive signal pairs, allowing direct communication between similar devices.
In simple words: A crossover cable links two similar network devices directly, like two computers, without needing a special box in between.

🎯 Exam Tip: The key function of a crossover cable is direct connection between *similar* devices without an intermediary network device like a hub or switch.

 

Explain In Brief Answer

Question 1. Compare UTP and STP?
Answer: UTP (Unshielded Twisted Pair) cables are widely used for internet connections today. They are preferred because they cost less and are easier to install and maintain compared to coaxial cables. STP (Shielded Twisted Pair) cables are similar to UTP but have an extra jacket or metallic shield. This shield helps protect the wires from outside interference, making STP suitable for environments with more electrical noise.
In simple words: UTP cables are cheap and common for internet. STP cables are like UTP but have extra shielding to block interference.

🎯 Exam Tip: For a comparison, highlight the main difference (shielding), and then list the advantages of each, such as UTP's cost-effectiveness and STP's interference protection.

 

Question 2. How to determine the type of Ethernet Cable?
Answer: You can determine the type of Ethernet cable by looking at its wiring scheme:
1. Straight-through: The colored wires are arranged in the same sequence at both ends of the cable. This is the most common type for connecting a computer to a switch.
2. Cross-over: The first colored wire at one end of the cable connects to the third colored wire at the other end. This type is used to connect two similar devices directly.
3. Roll-over: The colored wires are in the exact opposite sequence at either end of the cable. This is typically used for connecting a computer to a router's console port for configuration. Each type has a specific color code pattern for identification.
In simple words: To find the cable type, check the wire order at both ends. Straight-through cables have the same order. Cross-over cables swap some wires. Roll-over cables reverse all wires.

🎯 Exam Tip: Clearly define the wiring pattern for each cable type (straight-through, cross-over, roll-over) and briefly mention its typical use.

 

Explain In Detail

Question 1. Explain the Crimping process to make Ethernet cables?
Answer: Crimping is the process of attaching an RJ45 connector to an Ethernet cable. Here are the steps to make an Ethernet cable:
1. First, cut the Ethernet cable to the desired length.
2. Next, strip about 1 inch of the outer insulation sheath from both ends of the cable to expose the twisted pairs of wires.
3. After stripping, carefully untwist the smaller wires. Arrange them according to a specific wiring scheme, with T568B generally preferred.
4. Bring the wires tightly together and trim them so they all have the same length (about half an inch). This ensures a clean connection.
5. Insert all 8 colored wires into the eight grooves inside the RJ45 connector. Push them in until the plastic sheath is also inside the connector, providing strain relief.
6. Use a crimping tool to firmly lock the RJ45 connector onto the cable. It should be strong enough to withstand manual pulling, securing the connection for data transmission.
7. Finally, use a cable tester to verify that the cable has proper connectivity and that all wires are correctly in place. This step ensures the cable functions as expected.
In simple words: To make an Ethernet cable, cut it, strip the ends, arrange the wires, trim them, insert into the connector, and then use a crimping tool to secure it. Always test it to make sure it works.

🎯 Exam Tip: Outline the steps for crimping chronologically. Emphasize preparation (cutting/stripping/arranging), insertion, securing with the tool, and the final testing phase.

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