The four-way closure where both sender and receiver agree on closing the session is termed as graceful closure. Establishing a TCP session would begin with a three-way handshake, followed by data transfer, and then a four-way closure. One of the ways in which TCP ensures reliability is through the handshake process. TCP is defined as connection-oriented and reliable protocol. During troubleshooting connectivity errors, you might come across TCP reset in a network capture that could indicate a network issue. The network trace would then be filtered. When you suspect that the issue is on the network, you collect a network trace. Application connectivity to a database server.The following are the most common scenarios: You might come across connectivity errors on the application end or timeout errors.
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