LPIC-2 Advanced Networking Configuration Practice Question
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.
To create a simple bridge interface that connects two Ethernet interfaces, which of the following commands should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
ip link add br0 type bridge && ip link set br0 up
Option A is correct because the `ip link add br0 type bridge` command creates a new bridge interface using the modern iproute2 suite, and `ip link set br0 up` activates it. This is the current standard method for bridge creation on Linux, replacing the older brctl tool. The bridge then connects Ethernet interfaces by enslaving them with `ip link set eth0 master br0`.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
ip link add br0 type bridge && ip link set br0 up
Why this is correct
This creates the bridge and brings it up using the iproute2 suite.
Related concept
Read the scenario before looking for a memorised answer.
✗
brctl addbr br0 && brctl addif br0 eth0 eth1
Why it's wrong here
This uses the deprecated brctl tool and does not bring up the bridge automatically.
✗
ifconfig br0 create && ifconfig br0 up
Why it's wrong here
ifconfig does not support creating bridges.
✗
Both A and B work correctly
Why it's wrong here
While both can be used, the question asks for a single command set that is commonly used; A is the preferred modern method.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may remember the older `brctl` commands as valid, but fail to notice the syntax error in Option B (adding two interfaces at once) and assume both A and B are correct, leading them to choose Option D.
Trap categories for this question
Command / output trap
While both can be used, the question asks for a single command set that is commonly used; A is the preferred modern method.
Detailed technical explanation
How to think about this question
Under the hood, a Linux bridge operates as a virtual Layer 2 switch, forwarding frames based on MAC address learning using the kernel's bridging code (net/bridge). The iproute2 commands interact directly with the kernel's netlink interface, while brctl uses the older ioctl-based bridge control interface, which is deprecated. In real-world scenarios, using `ip link` ensures compatibility with modern network namespaces and advanced features like VLAN filtering.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Advanced Networking Configuration — This question tests Advanced Networking Configuration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: ip link add br0 type bridge && ip link set br0 up — Option A is correct because the `ip link add br0 type bridge` command creates a new bridge interface using the modern iproute2 suite, and `ip link set br0 up` activates it. This is the current standard method for bridge creation on Linux, replacing the older brctl tool. The bridge then connects Ethernet interfaces by enslaving them with `ip link set eth0 master br0`.
What should I do if I get this LPIC-2 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
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 →
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.
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.