What tools do you use for diagnosing network problems? How does dig differ from nslookup?

For diagnosing network issues, I usually use the following tools:

• ping — checks the availability of a host and measures response time.
• traceroute (tracert in Windows) — determines the route to a node and identifies bottlenecks.
• netstat — views open network connections and ports.
• tcpdump / Wireshark — captures and analyzes network traffic.
• dig and nslookup — diagnose DNS queries.

Difference between dig and nslookup:

• dig (Domain Information Groper) — a more modern and powerful tool for DNS queries. It allows flexible request configuration, provides detailed information, and is convenient for scripting and automation.

• nslookup — an older, simpler tool, but less flexible. Considered deprecated in some systems.

Example of using dig:

dig example.com A

Example of using nslookup:

nslookup example.com

Overall, for in-depth DNS analysis, dig is preferable, while nslookup is convenient for quick checks.