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Question 15Asked in DSSSB TGT Computer Science (Technical), 12 Sep 2025, Shift 1 (9:00 AM)

How does the receiver handle out-of-order frames in Selective Repeat?

  1. ARequests retransmission of all frames
  2. BSends a cumulative acknowledgment
  3. CBuffers them until all missing frames arrive
  4. DDiscards them immediately
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Correct answer: (C) Buffers them until all missing frames arrive

Explanation

In Selective Repeat the receiver accepts and buffers correctly received out-of-order frames, and only the missing frames are retransmitted; it then delivers them in order. Go-Back-N is the protocol that discards them.

From DSSSB TGT Computer Science PYQ (Technical), 12 Sep 2025, Shift 1 (9:00 AM)

This is question 15 of DSSSB TGT Computer Science PYQ (Technical), 12 Sep 2025, Shift 1 (9:00 AM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.