Describe your experience working with network traffic analysis tools and identifying network issues.

In my practice, I have used network traffic analysis tools such as Wireshark and tcpdump to identify issues with delays, packet loss, and incorrect routing.

For example, when testing a client-server application, I analyzed the sequence of TCP connections using Wireshark, checked the correctness of data transmission, and identified cases of retransmissions or timeouts. This helped to detect problems with network configurations or protocol implementation errors.

I also used built-in network interface monitoring tools and logs to identify anomalies and bottlenecks in the network.