9.1 | Introduction to TCP/IP | |||
9.1.3 | Transport layer |
The transport layer provides transport
services from the source host to the destination host. The transport
layer constitutes a logical connection between the endpoints of the
network, the sending host and the receiving host.
Transport
protocols segment and reassemble upper-layer applications into the
same data stream between endpoints. The transport layer data stream
provides end-to-end transport services.
The Internet is often represented by a cloud. The transport layer sends data packets from the sending source to the receiving destination through the cloud. End-to-end control, provided by sliding windows and reliability in sequencing numbers and acknowledgments, is the primary duty of the transport layer when using TCP. The transport layer also defines end-to-end connectivity between host applications. Transport services include all the following services: TCP and UDP
TCP only
The Internet is often represented by a cloud. The transport layer sends data packets from the sending source to the receiving destination through the cloud. The cloud deals with issues such as “Which of several paths is best for a given route?”
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