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Question 148Asked in DSSSB TGT Computer Science, 25 Jun 2023, Shift 3 (4:30 PM)

Which of the following fields in the IPV4 header ensures that datagrams do NOT circulate forever (due to, for example, a long-lived routing loop) in the…

Which of the following fields in the IPV4 header ensures that datagrams do NOT circulate forever (due to, for example, a long-lived routing loop) in the network?
  1. AService time
  2. BTime-to-live
  3. CType of service
  4. DHeader checksum
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Correct answer: (B) Time-to-live

Explanation

TTL is decremented at each router, and the datagram is discarded when it reaches 0. This stops packets from looping forever.

From DSSSB TGT Computer Science PYQ, 25 Jun 2023, Shift 3 (4:30 PM)

This is question 148 of DSSSB TGT Computer Science PYQ, 25 Jun 2023, Shift 3 (4:30 PM). 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.