Consider the following statements:
I – IP is connectionless, unreliable, protocol. It has no error control policies.
II – Whenever TTL field value of a packet is zero it is discarded by next upcoming router.
III – DHCP protocol will take source IP from the discarded packet and inform to the source by sending time exceeded message.
IV – Timestamp option is used for calculating transmission time.
Which of the given statement/s is/are incorrect?
(A) I only
(B) I and IV only
(C) III and IV only
(D) ALL are incorrect statements.


Answer: (C)

Explanation:

  • ICMP protocol will take source IP from the discarded packet and inform to the source by sending time exceeded message.
  • Time stamp option is used for calculating round trip time between two end points.
  • So, option (C) is correct.

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    • Last Updated : 07 Dec, 2018

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