Answer:
The ttl feild in an ip datagram decrements by 1. for each router it arrives at.
At every router hop, the TTL field exists decremented by one until it reaches zero, generating the data gram to be discarded.
A data gram exists as a unit of transfer associated with networking. A data gram has the following features: Data exists transmitted from source to destination without guarantee of delivery. Data exists frequently divided into smaller pieces and transmitted without a specified route or guaranteed order of delivery.
A router exists as a device that connects two or more packet-switched networks or sub networks. It performs two primary positions: operating traffic between these networks by forwarding data packets to their conscious IP addresses and permitting multiple devices to utilize the identical Internet connection.
A router exists as a physical or virtual appliance that passes information between two or more packet-switched computer networks. A router inspects a provided data packet's destination Internet Protocol address (IP address), estimates the best way for it to reach its goal, and then forwards it accordingly.
At every router hop, the TTL field exists decremented by one until it reaches zero, generating the data gram to be discarded.
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