Computer Networks

Question

Do all the TCP segments travel through same path once the connection is established ?

Answer 1

No. TCP though is a connection oriented but it is so only at the end-to-end devices. Means, though each segment will travel or may take a different path from source to destination but the receiver's transport layer always delivers in-order segments to the application layer of receiver thereby making sending process and receiving process feel like they are connected via a virtual circuit but actually there is no such circuit establishment.

Comments

Do all UDP segments go through the same path or it is same as TCP?

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See, once your transport layer hands over the data to the network layer, now this packet is routed independently of other packets.So, whether it's TCP or UDP, packets won't follow the same order everytime

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Are UDP segments atlast send datas in order to the application layer from transport layer?

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Let me check about it

Answer 2

refer thishttp://www.tcpipguide.com/free/t_ConnectionOrientedandConnectionlessProtocols-3.htm

Answer 3

Nope. TCP is end-end connection layer which used data-gram packet switching technique. It means that segments are divided into small packets and then sent through different different paths. Its not dependent on time unlike UDP, but makes sures that reciever recieves all the packets without loosing them.