CBSE Class 7 Computer Science Data Communication MCQs Set 01

Question. Which among the following layer’ main function is data formats, data encryption/decryption, data compression/decompression etc:
a) Session Layer
b) Transport Layer
c) Presentation Layer
d) None of the options

Answer: C

Question. The fundamental approaches to build a point – to – point network is:
a) Circuit Switching
b) Packet Switching
c) Both of Above
d) None of the options

Answer: C

Question. The _____layer defines the electrical and physical specifications for devices:
a) Data Link Layer
b) Presentation Layer
c) Physical Layer
d) None of the options

Answer: C

Question. HBA stands for:
a) Host Bus Adapters
b) Host Base Adapters
c) Hedged Base Adapters
d) None of the options

Answer: A

Question. In cable modem internet access, cable modem terminations system (CMTS) is at:
a) cable provider’s end
b) customer end
c) Both of Above
d) None of The Above

Answer: C

Question. The finally block is executed:
a) Only when a checked exception is thrown
b) Only when a unchecked exception is thrown
c) Only when an exception is thrown
d) Irrespective of whether an exception is thrown or not

Answer: D

Question. The Statement – System.out.print ( (double) 7/4 ); prints:
a)1.75
b) 1
c) 2.0
d) None of The Above

Answer: A

Question. What is the environment variable that contains a list of directions where Java looks for classes referenced in a program:
a) CLASSPATH
b) PATHDIR
c) SEARCHPATH
d) PATHCLASS

Answer: A

Question. HBA is used in ______:
a) Storage Area Networks
b) Software Based Networks Only
c) Both of Above
d) None of the options

Answer: A

Question. FDM stands for:
a) Frequency Division Multiplexing
b) Fidelty Division Multiplexing
c) Fast Division Multiplexing
d) None of the options

Answer: A

Question. TDM stands for:
a) Task Division Multiplexing
b) Time Division Multiplexing
c) Testing Division Multiplexing
d) None of the options

Answer: B