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Packets of the same session may be routed through different paths in:

  1. TCP, but not UDP
  2. TCP and UDP
  3. UDP, but not TCP
  4. Neither TCP nor UDP

5 Answers

Best answer
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b) TCP and UDP.

Routing happens in Network layer and hence has no dependency with the the transport layer protocols TCP and UDP. The transport layer protocol- whether TCP or UDP is hidden to the router and the routing path is determined based on the the network configuration at the time and hence can change even during a session.

Reference: http://stackoverflow.com/questions/15601389/if-tcp-is-connection-oriented-why-do-packets-follow-different-paths

edited by
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Answer: B. But i have a doubt that , we should consider OSI ref. model or TCP/IP ref. model. Because in OSI, PDU of network layer is packet but while in tcp/ip PDU of tcp is packet and PDU of IP and UDP is datagram.

Answer:

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