Which of the following descriptions regarding the TTL field of the IP packet is correct?
Which of the following descriptions regarding the TTL field of the IP packet is correct?
The TTL (Time To Live) field in an IP packet is used to limit the lifespan of the packet in the network. Each time the packet passes through a router, the TTL value is decremented by 1. When the TTL value reaches zero, the packet is discarded to prevent it from circulating indefinitely.
D is correct
Correct answer is (D) ==> TTL will decrement by 1 each time the packet is "routed". page (134) "routed" ==> means passes through a Layer 3 device.