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PGEE 2018 [closed]

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For which one of the following reasons does internet protocol(IP) use the time-to-live(TTL) field in IP datagram header?

  1. Ensure packets reach destination within that time
  2. Discard packets that reach later than that time
  3. Prevent packets from looping indefinitely
  4. Limit the time for which a packet gets queued in intermediate routers
closed as a duplicate of: GATE2006-5
asked in Computer Networks by Boss (18.1k points)
closed by | 191 views
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please refer below link for further discussion or comments 

https://gateoverflow.in/884/gate2006-5

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Option 4 is : to improve throughput of network.
 

TTL intention is to cause undeliverable datagrams to be discarded, and to bound the maximum datagram lifetime.

1. This is to control congestion in network and indirectly improving throughput.

2. and if congestion increases, increasing TTL by router has a direct positive impact on throughput in some cases.

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