A person is troubleshooting a network issue and needs to see a list of all active TCP network connections on this computer. Which Linux command should be used?

Rationale

netstat is the command used to see a list of all active TCP network connections on a Linux computer.

The netstat command provides detailed information about current network connections, including active TCP connections, listening ports, and network statistics. This makes it the ideal tool for troubleshooting network issues.

A (nslookup) YOUR ANSWER

The nslookup command is primarily used for querying the Domain Name System (DNS) to obtain domain name or IP address mapping. While it helps diagnose DNS-related issues, it does not provide information about active TCP connections on the local machine.

B (dig) YOUR ANSWER

Similar to nslookup, the dig command is a DNS lookup utility that retrieves information regarding DNS records. While it can be useful for troubleshooting DNS problems, it does not display active TCP connections on the system, making it irrelevant for the task at hand.

C (ifconfig) YOUR ANSWER

The ifconfig command is used to configure and manage network interfaces on Unix-like operating systems. It provides information about the network interfaces, such as their IP addresses and status, but it does not list active TCP connections, which is necessary for troubleshooting network issues.

D (netstat) CORRECT

The netstat command is designed to display various network statistics, including active TCP connections, listening ports, and routing tables. This command is essential for network troubleshooting as it provides a comprehensive view of the current network state.

Conclusion

When troubleshooting network issues on a Linux computer, the netstat command is the most suitable choice as it directly lists all active TCP connections. The other options, while useful for different networking tasks, do not fulfill the requirement of displaying active connections, thereby making netstat the essential tool for this scenario.

A person is troubleshooting a network issue and needs to see a list of all active TCP network connections on this computer. Which Linux command should be used?

netstat is the command used to see a list of all active TCP network connections on a Linux computer.

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