Simplified guide of MCQs for Exams, Interviews

Sub Topic: Data Communication

1 .  The information to be communicated in a data communications system is the ________

  • A. Medium
  • B. Protocol
  • C. Transmission
  • D. Message

Correct Answer:

Message
Sub Topic: Data Communication Posted by: Sadan Malik

2 .  An unauthorized user is a network _______ issue.

  • A. Performance
  • B. Reliability
  • C. Security
  • D. All of the Above

Correct Answer:

Security
Sub Topic: Data Communication Posted by: Sadan Malik

3 .  A television broadcast is an example of _______ transmission.

  • A. Half-duplex
  • B. Full-duplex
  • C. Simplex
  • D. Automatic

Correct Answer:

Simplex
Sub Topic: Data Communication Posted by: Sadan Malik

4 .  A cable break in a _______ topology stops all transmission.

  • A. Mesh
  • B. Star
  • C. Primary
  • D. Bus

Correct Answer:

Bus
Sub Topic: Data Communication Posted by: Sadan Malik

5 .  What is the main function of the transport layer?

  • A. Process-to-process delivery
  • B. Node-to-node delivery
  • C. Synchronization
  • D. Updating and maintenance of routing tables

Correct Answer:

Process-to-process delivery
Sub Topic: Data Communication Posted by: Sadan Malik

6 .  The Internet model consists of _______ layers.

  • A. 3
  • B. 5
  • C. 7
  • D. 8

Correct Answer:

5
Sub Topic: Data Communication Posted by: Sadan Malik

7 .  The _______ layer is the layer closest to the transmission medium.

  • A. Network
  • B. Physical
  • C. Data link
  • D. Transport

Correct Answer:

Physical
Sub Topic: Data Communication Posted by: Sadan Malik

8 .  The _______ layer changes bits into electromagnetic signals.

  • A. Physical
  • B. Transport
  • C. Data link
  • D. None of these

Correct Answer:

Physical
Sub Topic: Data Communication Posted by: Sadan Malik
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