TCP Mechanisms

To prevent the sender overflowing the connection’s receive buffer by sending too much data too quickly, TCP uses

Question

TCP Mechanisms

To prevent the sender overflowing the connection’s receive buffer by sending too much data too quickly, TCP uses

BlackTom AI · Accepted Answer

When evaluating the mechanism TCP uses to prevent the sender from overwhelming the receiver's buffer, we should match the concept to its purpose in the protocol stack.
Option 1: Sequence numbers. These are used to order segments and detect missing data, not to regulate the rate at which data is sent to the receiver. They don't address the issue of a full receive buffer.
Option 2: Flow Control. This directly controls the sender's data rate based on the receiver's advertised window size. By signaling how much data the receiver can buffer, flow control prevents buffer overflow and fits the question precisely.
Option 3: Connection management. This concerns establishing and terminating a connection (three-way handshake, etc.) and state, rather than regulating data flow once the connection is established, so it doesn't solve the buffer overflow issue.
Option 4: Timeout. Timeouts pertain to retransmission timing and detecting lost segments, not to preventing the receiver from being overwhelmed with data.
Option 5: Congestion Control. While important for avoiding network congestion by adjusting sending rate in response to network conditions, it operates on a network-wide level rather than specifically preventing the receiver's buffer overflow at the endpoints.
In summary, the mechanism that prevents the sender from filling the receiver's buffer too quickly is Flow Control, because it uses the receiver's advertised window to limit the sender's transmission rate and protect the receiver from overflow.

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TCP Mechanisms To prevent the sender overflowing the connection’s receive buffer by sending too much data too quickly, TCP uses

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