JNCIA-JUNOS Junos Configuration Basics Practice Question
This JNCIA-JUNOS practice question tests your understanding of junos configuration basics. 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.
Which TWO statements about the rescue configuration are correct? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The rescue configuration is designed to provide a method of last-resort recovery.
Option C is correct because the rescue configuration is explicitly designed to provide a method of last-resort recovery. It allows an administrator to save a known-good configuration that can be loaded even if the active configuration becomes corrupted or inaccessible, ensuring the device can be brought back to a functional state.
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.
✗
The rescue configuration is automatically saved after every commit.
Why it's wrong here
It must be saved manually.
✗
The 'rollback rescue' command loads the factory-default configuration.
Why it's wrong here
It loads the saved rescue configuration, not factory defaults.
✓
The rescue configuration is designed to provide a method of last-resort recovery.
Why this is correct
It is a safety net for recovery.
Related concept
Read the scenario before looking for a memorised answer.
✓
The rescue configuration can be saved by issuing the 'request system configuration rescue save' command.
Why this is correct
This explicitly saves the active config as rescue.
Related concept
Read the scenario before looking for a memorised answer.
✗
The rescue configuration can be used to restore only a subset of the configuration.
Why it's wrong here
It replaces the entire active configuration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the rescue configuration with the factory-default configuration or assume it is automatically saved, leading them to select options A or B incorrectly.
Detailed technical explanation
How to think about this question
The rescue configuration is stored as a separate file in the /config directory on Junos devices. It is typically saved after initial setup or after a stable configuration is achieved, and it can be loaded even if the normal configuration database is corrupted. This is particularly useful in scenarios where a remote device loses connectivity due to a misconfiguration, allowing recovery via out-of-band management or console access.
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 JNCIA-JUNOS 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.
Junos Configuration Basics — This question tests Junos Configuration Basics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The rescue configuration is designed to provide a method of last-resort recovery. — Option C is correct because the rescue configuration is explicitly designed to provide a method of last-resort recovery. It allows an administrator to save a known-good configuration that can be loaded even if the active configuration becomes corrupted or inaccessible, ensuring the device can be brought back to a functional state.
What should I do if I get this JNCIA-JUNOS 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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