Answer:
In TCP, the receiver can temporarily shut down the window; the sender, however, can always send a segment of one byte after the window is shut down. This segment is called a probe segment, and its purpose is to test whether the receiver's window has opened again.
In TCP, the receiver can temporarily shut down the window; the sender, however, can always send a segment of one byte after the window is shut down. This segment is called a probe segment, and its purpose is to test whether the receiver's window has opened again.
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