EX200 Deploy, configure, and maintain systems Practice Question
This EX200 practice question tests your understanding of deploy, configure, and maintain systems. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
An administrator needs to create a network bond interface 'bond0' with two slave interfaces 'eth0' and 'eth1' using active-backup mode. Which set of commands is correct?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
nmcli con add type bond ifname bond0; nmcli con add type ethernet ifname eth0 master bond0 slave-type bond
Option A is correct because it uses `nmcli` to first create a bond interface named 'bond0' with the default active-backup mode, then adds an Ethernet connection for 'eth0' as a slave to 'bond0' using the `master bond0 slave-type bond` parameters. This is the standard NetworkManager approach for bonding in RHEL 8/9, ensuring the bond is managed by NetworkManager and the slave is properly attached.
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.
✓
nmcli con add type bond ifname bond0; nmcli con add type ethernet ifname eth0 master bond0 slave-type bond
Why this is correct
Correct use of nmcli to create bond and attach ethernet slaves.
Related concept
Read the scenario before looking for a memorised answer.
✗
Edit /etc/sysconfig/network-scripts/ifcfg-bond0 and ifcfg-eth0 manually
Why it's wrong here
While possible, using ifcfg files is legacy and not the preferred method.
nmcli con add type bond ifname bond0; nmcli con add type bond-slave ifname eth0 master bond0
Why it's wrong here
The 'bond-slave' type is deprecated; use 'ethernet' with slave-type.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse bonding with teaming (Option C) or use deprecated manual file editing (Option B), while the correct `nmcli` syntax for adding a slave requires `type ethernet` with `master` and `slave-type`, not a non-existent `type bond-slave` (Option D).
Detailed technical explanation
How to think about this question
NetworkManager's `nmcli` creates bond interfaces using the kernel bonding driver, which supports modes like active-backup (mode 1) where only one slave is active at a time, providing failover. The `master bond0 slave-type bond` parameters in `nmcli` automatically set the `SLAVE=yes` and `MASTER=bond0` directives in the ifcfg file, ensuring the slave is recognized by the bond. In a real-world scenario, using `nmcli` ensures consistent configuration across reboots and integrates with NetworkManager's connection profiles, avoiding manual file editing that can lead to inconsistencies.
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 EX200 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.
Deploy, configure, and maintain systems — This question tests Deploy, configure, and maintain systems — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: nmcli con add type bond ifname bond0; nmcli con add type ethernet ifname eth0 master bond0 slave-type bond — Option A is correct because it uses `nmcli` to first create a bond interface named 'bond0' with the default active-backup mode, then adds an Ethernet connection for 'eth0' as a slave to 'bond0' using the `master bond0 slave-type bond` parameters. This is the standard NetworkManager approach for bonding in RHEL 8/9, ensuring the bond is managed by NetworkManager and the slave is properly attached.
What should I do if I get this EX200 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.
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Question Discussion
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