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In Unicast routing, if instability is between three nodes, stability cannot be ________

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In Unicast routing, if instability is between three nodes, stability cannot be ________

(a) Stable

(b) Reversed

(c) Guaranteed

(d) Forward

The question was asked in an online interview.

My question comes from Packet Forwarding and Routing in portion Networking of Computer Network

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Best answer
Right option is (c) Guaranteed

The best explanation: In Unicast routing, there is only sender and one receiver. So, if there is instability between three nodes, in which one is sender, one is receiver and one is the router in the path, there is no other path available for the packet and the stability of the network is not guaranteed.

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