Computer Networks MCQ with Answers and PDF Download

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Computer Science : Computer Networks

Collection of Multiple Choice Questions (MCQ) of Computer Networking is given below
1. protocols are?
[A] Agreements on how communication components and DTE's are to communicate
[B] Logical communication channels for transferring data
[C] Physical communication channels sued for transferring data
[D] None of above

Answer: A. Agreements on how communication components and DTE's are to communicate

2. Which data communication method is used to transmit the data over a serial communication link?
[A] Simplex
[B] Half-duplex
[C] Full duplex
[D] All of above

Answer: C. Full duplex

3. The method of communication in which transaction takes place in both directions,but only in one direction at a time, is called ?
[A] Simplex
[B] Four wire circuit
[C] Full duplex
[D] Half-duplex

Answer: D. Half-duplex

4. In communication satellite, multiple repeaters are known as?
[A] Detectors
[B] Modulators
[C] Stations
[D] Transponders

Answer: D. Transponders

5. Error detection at the data link layer is achieved by?
[A] Bit stuffing
[B] Cyclic redundancy codes
[C] Hamming codes
[D] Equalization

Answer: B. Cyclic redundancy codes

6. Loss in signal power as light travels down the fiber is called?
[A] Attenuation
[B] Propagation
[C] Scattering
[D] Interruption

Answer: A. Attenuation

7. The topology with highest reliability is ?
[A] Bus topology
[B] Star topology
[C] Ring Topology
[D] Mesh Topology

Answer: D. Mesh Topology

8. Baud means?
[A] The number of bits transmitted per unit time
[B] The number of byted transmitted per unit time
[C] The rate at which the signal changes
[D] None of above

Answer: C. The rate at which the signal changes

9. In OSI model dialogue control and token management are responsibilities of ?
[A] Session Layer
[B] Network layer
[C] Transport layer
[D] Data link layer

Answer: A. Session Layer

10. Under mark parity,each parity bit is?
[A] Alternated between 0 and 1
[B] Always set to 0
[C] Always set to 1
[D] Not used

Answer: C. Always set to 1

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