200-201 Host-Based Analysis Practice Question
A Linux analyst wants to identify all listening TCP ports on a system. Which command is most appropriate?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
ss -tlnp
ss -tlnp shows listening TCP sockets with process info.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
netstat -an
Why it's wrong here
netstat may not be installed by default on modern systems; ss is preferred.
- ✓
ss -tlnp
Why this is correct
ss -tlnp -t: TCP, -l: listening, -n: numeric, -p: show process.
- ✗
lsof -i
Why it's wrong here
lsof -i shows open files related to network but not as concise as ss.
- ✗
ps aux
Why it's wrong here
ps aux shows processes, not network connections.
Go deeper
Related to this question
About these practice questions
Courseiva writes every 200-201 question from scratch — 979 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-201 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-201 exam.