Which tool is commonly used to capture and analyze live network traffic, such as packet captures for troubleshooting?

Which tool is commonly used to capture and analyze live network traffic, such as packet captures for troubleshooting?

• A. Traceroute
• B. Nmap
• C. Wireshark
• D. PuTTY

Answer: (C)

Capturing and analyzing live network traffic requires a tool that can listen to an interface, collect packets in real time, and decode them into readable protocol details for inspection. Wireshark is a network protocol analyzer designed for this purpose. It lets you start a live capture on an interface, see every packet as it’s transmitted, and inspect each one with decoded headers and payloads. You can apply filters to focus on specific IPs, ports, or protocols, and you can drill down into individual packets to understand exactly how data is being formatted and exchanged. It also supports saving captures for later offline analysis and can interpret hundreds of protocols, making it a go-to choice for troubleshooting. The other tools serve different tasks: traceroute maps the path packets take across a network but doesn’t provide packet-level capture and analysis; Nmap scans for hosts and services to discover what’s available on a network; PuTTY is a terminal emulator used for remote access. None of these are primarily used to capture and deeply analyze live packet data like Wireshark.

Capturing and analyzing live network traffic requires a tool that can listen to an interface, collect packets in real time, and decode them into readable protocol details for inspection. Wireshark is a network protocol analyzer designed for this purpose. It lets you start a live capture on an interface, see every packet as it’s transmitted, and inspect each one with decoded headers and payloads. You can apply filters to focus on specific IPs, ports, or protocols, and you can drill down into individual packets to understand exactly how data is being formatted and exchanged. It also supports saving captures for later offline analysis and can interpret hundreds of protocols, making it a go-to choice for troubleshooting.

The other tools serve different tasks: traceroute maps the path packets take across a network but doesn’t provide packet-level capture and analysis; Nmap scans for hosts and services to discover what’s available on a network; PuTTY is a terminal emulator used for remote access. None of these are primarily used to capture and deeply analyze live packet data like Wireshark.