netstat Interview Questions and Answers¶

Introduction¶

These questions test whether you understand what netstat does, when to use it, and how to verify the result on Linux.

Beginner Questions¶

What does netstat do?

It shows legacy network connection and routing information.

Show a basic command.

netstat -tuln

Intermediate Questions¶

Name useful options.

• -t: show TCP.
• -u: show UDP.
• -l: show listening sockets.

Show a common administrator command.

netstat -rn

Scenario-Based Questions¶

How would you handle netstat listening ports?

netstat -tuln

What would you verify afterward?

netstat -s

Expected output should look similar to:

tcp        0      0 0.0.0.0:22        0.0.0.0:*        LISTEN

Practical Task Questions¶

Practice in a lab by running a safe version of the command, explaining the target, and showing the verification output.

Quick Review¶

netstat -tuln
netstat -rn
netstat -s

Related Guides¶

• What is netstat?
• netstat examples
• netstat listening ports explained
• netstat vs ss

Summary¶

A strong netstat answer includes the purpose, a correct example, a common mistake, and a verification command with output you can interpret.