Question: A serious problem can arise in the sliding window operation when either the sending application program creates data slowly or the receiving application program consumes data slowly, or both. This problem is called the ______.

Answer:

• Correct, the problem where the sliding window operation can become inefficient due to slow data creation or consumption by the sending and receiving application programs is known as "silly window syndrome". This occurs when the sender sends small amounts of data and the receiver's buffer becomes filled with small amounts of data, causing a large number of acknowledgments to be sent back and forth, which can reduce network performance. To avoid this, some TCP implementations use an algorithm called Nagle's algorithm, which collects small packets together and sends them in a single segment to improve network efficiency.
• A serious problem can arise in the sliding window operation when either the sending application program creates data slowly or the receiving application program consumes data slowly, or both. This problem is called the sliding window flow control problem, also known as the "congestion problem."