CBSE Class 12 Informatics Practices Networking and open standards Assignment



Solved Questions:

Q1. What is MAC Address?

Ans : In computer networking, a Media Access Control address (MAC) is a unique identifier assigned to most network adapters or network interface cards (NICs) by the manufacturer for identification, and used in the Media Access Control protocol sub-layer.

Q2. Write two advantages of networks.

Ans: Advantages: i) Data or information can be shared among the users.

ii) Fast communication can be achieved.

Q3. Write two disadvantages of networks.

Ans : Disadvantages of networks:

i. Sophisticated Hardware and software technology is required.

ii. Expensive to install network.

Q4. What is communication channel? Name the basic types of communication channels available.

Ans: What is communication channel? Name the basic types of communication channels available. Communication channels mean the connecting cables that link various workstations. There are 3 basic types of cables:

 Twisted Pair cables

 Coaxial cables

 Fiber-optic cables

Q5. Define a network.

Ans: A computer network is a system in which computers are connected to share information and resources.

Q6. What is IP address?

Ans A unique number consisting of 4 parts separated by dots, e.g. Every machine that is on the Internet has a unique IP number - if a machine does not have an IP number, it is not really on the Internet.

Q7. What is domain name? How is it alternatively known?

Ans The unique name that identifies an Internet site. Domain Names always have 2 or more parts, separated by dots. The part on the left is the most specific, and the part on the right is the most general. E.g.:

Q8. What are the various types of networks?

Ans : Network can be classified on the basis of their size, complexity and geographical spread. On the basis of geographical spread it can be classified as Local Area Network, Metropolitan Area Network and Wide Area Network.

Q9. What is the difference between MAN and WAN?

Ans : A metropolitan area network (MAN) is a large computer network that usually spans a city or a large campus. WAN is a network that covers an area larger than a single building or campus such as across the cities or countries.

Q10. What is meant by Topology? Name some popular topologies.

Ans: Network topology is defined as the interconnection of the various elements (links, nodes, etc.) of a computer network. In computer networking, topology refers to the layout of connected devices.

• Bus topology

• Star topology

• Ring topology

• Tree topology

• Mesh topology

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