Gate2020 cs Q29

29Consider the following statements about the functionality of an IP based router.
I. A router does not modify the packets during forwarding.
II. It is not necessary for a router to implement any routing protocol.
III. A router should reassemble IP fragments if the MTU of the outing packet is larger than the size of the incoming IP packet.
Which of the above statements is/are TRUE?

Option : B
Explanation :
Statement 1: False, Because, Intermediate router may modify fields like TTL, offset checksum.
Statement 2: True, router may not implement routing protocol, for static routing.
Statement 3: False, It is not mandatory to reassemble.

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