Data Communication MCQs and Answers with FREE PDF

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1. A _______ connection provides a dedicated link between two devices.

  • primary
  • multipoint
  • point-to-point
  • secondary

2. Which topology requires a multipoint connection?

  • Bus
  • Star
  • Mesh
  • Ring

3.  A ________ is a set of rules that governs data communication.

  • protocol
  • forum
  • standard
  • none of the above

4. In a ______ connection, two and only two devices are connected by a dedicated link.

  • multipoint
  • point-to-point
  • (a) and (b)
  • none of the above

5. The information to be communicated in a data communications system is the _______.

  • Medium
  • Protocol
  • Message
  • Transmission

6. ________ defines how a particular pattern to be interpreted, and what action is to be taken based on that interpretation.

  • Syntax
  • Semantics
  • Timing
  • None of the above

7. Frequency of failure and network recovery time after a failure are measures of the _______of a network.

  • Performance
  • Security
  • Reliability
  • Feasibility

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

  • half-duplex
  • simplex
  • full-duplex
  • automatic

9. Data flow between two devices can occur in a _______ way.

  • simplex
  • half-duplex
  • full-duplex
  • all of the above

10. _______ refers to two characteristics: when data should be sent and how fast it can be sent.

  • Semantics
  • Timing
  • Syntax
  • None of the above

11.  This was the first network.

  • CSNET
  • NSFNET
  • ARPANET
  • ANSNET

12. Devices may be arranged in a _____ topology.

  • mesh
  • ring
  • bus
  • all of the above

13.  _______ is the protocol suite for the current Internet.

  • UNIX
  • NCP
  • TCP/IP
  • ACM

14.  ________ is a collection of many separate networks.

  • A WAN
  • An internet
  • A LAN
  • None of the above

15.  In a ________ connection, three or more devices share a link.

  • point-to-point
  • multipoint
  • (a) and (b)
  • none of the above

16. The session, presentation, and application layers are the ____ support layers.

  • user
  • network
  • both (a) and (b)
  • neither (a) nor (b)

17. The physical, data link, and network layers are the ______ support layers.

  • network
  • user
  • both (a) and (b)
  • neither (a) nor (b)

18.  The ________ layer is responsible for the process-to-process delivery of the entire message.

  • transport
  • physical
  • network
  • data link

19.  The _______ layer lies between the network layer and the application layer.

  • Data link
  • Transport
  • Physical
  • None of the above

20.  The Internetworking Protocol (IP) is a ________ protocol.

  • connection-oriented
  • reliable
  • both a and b
  • none of the above

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