This LPIC-2 practice question tests your understanding of advanced networking configuration. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO tools are commonly used for traffic shaping and QoS on Linux? (Choose two.)
ethtool
Why wrong: Shows and changes NIC parameters, not QoS.
wondershaper
Script that simplifies use of tc for bandwidth limiting.
iptables
Why wrong: Primarily packet filtering; can classify packets but not shape.
tc
Traffic control tool for shaping, scheduling, policing.
route
Why wrong: Manages routing table, not traffic shaping.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
wondershaper
Wondershaper is a user-friendly shell script that wraps the `tc` command to simplify traffic shaping by limiting bandwidth on a network interface. It uses the Linux kernel's QoS capabilities, specifically the HTB (Hierarchical Token Bucket) queuing discipline, to prioritize and throttle traffic. This makes it a common tool for basic traffic shaping tasks on Linux.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
ethtool
Why it's wrong here
Shows and changes NIC parameters, not QoS.
wondershaper
Why this is correct
Script that simplifies use of tc for bandwidth limiting.
Related concept
Read the scenario before looking for a memorised answer.
iptables
Why it's wrong here
Primarily packet filtering; can classify packets but not shape.
tc
Why this is correct
Traffic control tool for shaping, scheduling, policing.
Related concept
Read the scenario before looking for a memorised answer.
route
Why it's wrong here
Manages routing table, not traffic shaping.
Common exam traps
The trap here is that candidates confuse iptables' ability to mark packets for QoS with actually performing traffic shaping, forgetting that iptables itself does not implement queuing or bandwidth limits.
Trap categories for this question
Command / output trap
Shows and changes NIC parameters, not QoS.
Detailed technical explanation
The `tc` command interacts directly with the Linux kernel's Traffic Control subsystem, which implements queuing disciplines (qdiscs) like HTB, TBF, and PRIO. Wondershaper simplifies this by generating a `tc` command chain that creates a root qdisc, a class hierarchy, and filters to classify traffic by IP or port. In real-world scenarios, administrators often use `tc` directly for fine-grained control, such as guaranteeing bandwidth for VoIP traffic while limiting bulk downloads.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the LPIC-2 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Advanced Networking Configuration — study guide chapter
Learn the concepts, then practise the questions
Advanced Networking Configuration practice questions
Targeted practice on this topic area only
All LPIC-2 questions
511 questions across all exam domains
Linux Professional Institute Certification Level 2 LPIC-2 study guide
Full concept coverage aligned to exam objectives
LPIC-2 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise LPIC-2 questions linked to Linux Kernel and System Startup.
Practise LPIC-2 questions linked to Block Devices, Filesystems and Advanced Storage.
Practise LPIC-2 questions linked to Advanced Networking Configuration.
Practise LPIC-2 questions linked to DNS, Web and Mail Services.
Practise LPIC-2 questions linked to File Sharing and Samba.
Practise LPIC-2 questions linked to System Security.
Practise LPIC-2 questions linked to Network Client Management.
Practise LPIC-2 questions linked to LPIC-2 fundamentals.
Practise LPIC-2 questions linked to LPIC-2 scenario.
Practise LPIC-2 questions linked to LPIC-2 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Advanced Networking Configuration — This question tests Advanced Networking Configuration — Read the scenario before looking for a memorised answer..
The correct answer is: wondershaper — Wondershaper is a user-friendly shell script that wraps the `tc` command to simplify traffic shaping by limiting bandwidth on a network interface. It uses the Linux kernel's QoS capabilities, specifically the HTB (Hierarchical Token Bucket) queuing discipline, to prioritize and throttle traffic. This makes it a common tool for basic traffic shaping tasks on Linux.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 25, 2026
This LPIC-2 practice question is part of Courseiva's free LPI 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 LPIC-2 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.