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Data Link Protocol - Multiple Choice Questions and Answers | Page-4

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Download in pdf multiple choice questions(mcqs) & answers on Data Link Protocol. These general awareness quiz objective questions answers include mcqs on X.25 protocol, ARQ, NAK etc.
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(16) In which ARQ, when a NAK is received, all frames sent since the last frame acknowledge are retransmitted
[A] Go back n
[B] Stop-and-wait
[C] Selective Reject
[D] Both A and B

Comment

Answer: Option [A]
(17) Not a function of a data link protocol
[A] Error control
[B] Message delineation
[C] Media access control
[D] Amplitude shift keying

Comment

Answer: Option [D]

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(18) AAl2 is useful for
[A] Constant bit rate
[B] Variable bit rate
[C] Connection oriented packet data
[D] Connectionless packet data

Comment

Answer: Option [B]
(19) Which of the following signals is not standard RS-232-C signal ?
[A] RTS
[B] CTS
[C] VDR
[D] DSR

Comment

Answer: Option [C]
(20) An internetworking protocol that provides virtual circuit service across multiple X.25 protocol, is
[A] X.75
[B] X.25
[C] X.21
[D] X.400

Comment

Answer: Option [A]

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DATA COMMUNICATION & COMPUTER NETWORKS – MULTIPLE CHOICE QUESTIONS AND ANSWERS | 250 MCQS

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