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Why is the transport layer not present inside the network? |
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Answer
The transport layer provides additional function to compensate for the limitations and impairments of the network layer, in order to meet requirements (e.g. QoS) of the upper layer. For example in TCP/IP, IP provides only best effort service. To provide the reliable service required by some applications - that is, to compensate for the shortcomings of best effort service - TCP establishes connections and implements flow control and congestion control on an end-to-end basis.
First answer by cool dude. Last edit by cool dude. Question popularity: 115 [recommend question]
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