Intermediate
Computer Networks
Q72 / 100
What is the purpose of the TTL (Time to Live) field in an IP header?
Correct! Well done.
Incorrect.
The correct answer is D) It limits how long a packet can remain in the network by decrementing at each hop, preventing packets from looping forever
D
Correct Answer
It limits how long a packet can remain in the network by decrementing at each hop, preventing packets from looping forever
Explanation
Each router decrements the TTL field by one; when it reaches zero, the packet is discarded and an ICMP Time Exceeded message is returned. This prevents undeliverable packets from circulating indefinitely due to routing loops.
Progress
72/100