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Question 41

What is the function of the TTL (Time to Live) field in IPv4 and the Hop Limit field in IPv6 In an IP Packet header?

These fields are decremented each time a packet is retransmitted to minimize the possibility of routing loops.

These fields are initialized to an initial value to prevent packet fragmentation and fragmentation attacks.

These fields are recalculated based on the required time for a packet to arrive at its destination.

These fields are incremented each time a packet is transmitted to indicate the number of routers that an IP packet has traversed.

Correct Answer: A

The function of the TTL (Time to Live) field in IPv4 and the Hop Limit field in IPv6 is to prevent routing loops and ensure packets do not circulate indefinitely in the network. These fields are decremented by one each time a packet passes through a router. When the value reaches zero, the packet is discarded. This mechanism ensures that data packets do not consume network resources unnecessarily and aids in managing network traffic effectively.

Discussion

eromsOption: D

D. These fields are incremented each time a packet is transmitted to indicate the number of routers that an IP packet has traversed.

Kuku55

A is right. Its Time to Live

username8527Option: A

A is the correct answer. TTL is decremented and not incremented.