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Question

Which mechanism is used by TCP for flow control.

A
Sliding window
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B
Checksum
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C
Keep alive timer
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D
None of the above
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Solution

The correct option is C Sliding window

Sliding window mechanism is used by TCP for flow control.

TCP flow control and the sliding window. Transmission Control Protocol (TCP) uses a sliding window for flow control. Before you tune any TCP/IP settings, first understand how the TCP sliding window works. The TCP sliding window determines the number of unacknowledged bytes, x , that one system can send to another.

Sliding windows, a technique also known as windowing, is used by the Internet's Transmission Control Protocol (TCP) as a method of controlling the flow of packets between two computers or network hosts. TCP requires that all transmitted data be acknowledged by the receiving host.

TCP Congestion Control and Flow Control – Sliding Windows. One of the main principles for congestion control is avoidance. ... Flow control is accomplished by the receiver sending back a window to the sender. The size of this window, called the receive window, tells the sender how much data to send.

A sliding window protocol is a feature of packet-based data transmission protocols. Sliding window protocols are used where reliable in-order delivery of packets is required, such as in the Data Link Layer (OSI layer 2) as well as in the Transmission Control Protocol (TCP).


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