Packets of the same session may be routed through different paths in
2005
Packets of the same session may be routed through different paths in
- A.
TCP, but not UDP
- B.
TCP and UDP
- C.
UDP, but not TCP
- D.
Neither TCP, nor UDP
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Correct answer: B
Answer: Packets of the same session may be routed through different paths in both TCP and UDP.
Why:
Routing is done at the network (IP) layer. Routers make forwarding decisions based on routing tables and policies, which can vary per packet (for example, equal-cost multi-path routing or route changes due to topology updates).
Because routing is independent of the transport protocol, both TCP and UDP packets can take different paths.
Impact on TCP:
TCP detects out-of-order delivery, loss, and duplication using sequence numbers and acknowledgements and recovers via retransmission, but excessive reordering or varying path delays can degrade performance.
Impact on UDP:
UDP provides no reliability or ordering guarantees; if applications need ordered or reliable delivery they must implement it themselves.
Conclusion: The correct choice is that packets may be routed through different paths in both TCP and UDP because routing decisions are made at the IP layer, independent of the transport protocol.
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