What is the drawback of Clark\'s solution to TCP\'s silly window syndrome ? a. i

Question

What is the drawback of Clark's solution to TCP's silly window syndrome ?

a. it creates additional traffic with ACK packets sent by the receiver to the sender that announce a window of 0.

b. It creates a situation where the sender must limit its transmissions to 1 byte at a time.

c. It has no drawbacks.

d. It makes the sender wait longer for ACK packets, potentially causing a timeout and forcing a retransmission.

What is the drawback of Clark's solution to TCP's silly window syndrome ?

a. it creates additional traffic with ACK packets sent by the receiver to the sender that announce a window of 0.

b. It creates a situation where the sender must limit its transmissions to 1 byte at a time.

c. It has no drawbacks.

d. It makes the sender wait longer for ACK packets, potentially causing a timeout and forcing a retransmission.

Explanation / Answer

c) It has no drawbacks:

Silly window syndrome is a problem that can degrade TCP performance.

This problem occurs when data are passed to the sending TCP entity in large blocks, but an interactive application on the receiving side reads data 1 byte at a time.

Clark’s solution is to prevent the receiver from sending a window update for 1 byte.

Instead it is forced to wait until it has a decent amount of space available and advertise that instead. Specifically, the receiver should not send a window update until it can handle the maximum segment size it advertised when the connection was established or until its buffer is half empty, whichever is smaller.

The sender can also help by not sending tiny segments. Instead, it should wait until it has accumulated enough space in the window to send a full segment or at least one containing half of the receiver’s buffer size.

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