Question

Which of the following remains same in the header of the packet in a datagram network during the entire journey of the packet?

(a) Destination address

(b) Source address

(c) Checksum

(d) Padding

I had been asked this question in a job interview.

My query is from Datagram Networks topic in portion Network Layer of Computer Network

Answer 1

Correct answer is (a) Destination address

To explain I would say: Destination address remains same in the header during the entire journey of the packet. There is no pre-decided route for the packets so each datagram/packet is treated as an individual entity and routed independently through the network.