LFCS Networking Practice Question
Which THREE are common tools used for network troubleshooting on Linux?
⚠ Common exam trap
The trap here is that candidates might confuse system administration tools (like fdisk and useradd) with network utilities, or incorrectly assume that any command that interacts with the system can be used for network troubleshooting, when only dedicated network diagnostic tools like traceroute, ping, and tcpdump are 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
✓
traceroute
A. traceroute is correct because it uses ICMP (or UDP on some systems) to trace the path packets take to a destination, revealing each hop's IP address and round-trip time. This helps identify routing issues, packet loss, or latency bottlenecks in the network path.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
traceroute
Why this is correct
Traces the route packets take to a destination.
- ✗
fdisk
Why it's wrong here
Used for disk partition management, not networking.
- ✓
ping
Why this is correct
Used to test reachability and measure round-trip time.
- ✓
tcpdump
Why this is correct
Captures and analyzes network packets.
- ✗
useradd
Why it's wrong here
Used to create user accounts.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LFCS practice question is part of Courseiva's free Linux Foundation 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 LFCS exam.