Question 10406 – Calculus
March 16, 2024Question 15926 – STQC-NIELIT SC-B 2021
March 17, 2024Question 8176 – Computer-Networks
Which one of the following fields of an IP header is NOT modified by a typical IP router?
Correct Answer: B
Question 19 Explanation:
Option C (TTL) is decremented by each visited router. When it reaches to Zero, then Packet will be discarded.
Option A (Checksum) needs to be updated by each visited Router since TTL Value is modified.
Option D (Length) also modified whenever there is a need of performing the fragmentation process.
Option B (Source Address) can’t be modified by an IP router. Only NAT can modify it.
Option A (Checksum) needs to be updated by each visited Router since TTL Value is modified.
Option D (Length) also modified whenever there is a need of performing the fragmentation process.
Option B (Source Address) can’t be modified by an IP router. Only NAT can modify it.
Checksum
Source address
Time to Live (TTL)
Length
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