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 of the following are valid methods to load a configuration file into a Junos device?
Why wrong: 'import configuration' is not a valid Junos CLI command.
D
load replace
Why wrong: 'load replace' is used for replacing with a file that has a special replace tag, not for all configurations.
E
load set
Why wrong: 'load set' loads a set of configuration commands but is not one of the standard 'load' commands; 'load' subcommands are merge, override, replace, patch, and factory-default.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
load override
Option A is correct because the 'load override' command replaces the entire candidate configuration with the contents of the specified configuration file, discarding any previous candidate changes. Option B is correct because 'load merge' combines the contents of the specified configuration file with the current candidate configuration, adding or updating statements without removing existing ones. Both are standard Junos CLI commands for loading configuration data.
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.
✓
load override
Why this is correct
Correct command to replace entire configuration.
Related concept
Read the scenario before looking for a memorised answer.
✓
load merge
Why this is correct
Correct command to merge configuration.
Related concept
Read the scenario before looking for a memorised answer.
✗
import configuration
Why it's wrong here
'import configuration' is not a valid Junos CLI command.
✗
load replace
Why it's wrong here
'load replace' is used for replacing with a file that has a special replace tag, not for all configurations.
✗
load set
Why it's wrong here
'load set' loads a set of configuration commands but is not one of the standard 'load' commands; 'load' subcommands are merge, override, replace, patch, and factory-default.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse 'load replace' or 'load set' as valid methods, but the question specifically asks for two correct methods, and only 'load override' and 'load merge' are listed as correct in this context.
Trap categories for this question
Command / output trap
'import configuration' is not a valid Junos CLI command.
Detailed technical explanation
How to think about this question
The 'load' command in Junos reads configuration data from a file or terminal and applies it to the candidate configuration. 'load override' completely replaces the candidate configuration, which is useful for applying a full baseline configuration. 'load merge' is additive, ideal for incremental changes without affecting unrelated configuration sections. Both commands operate on the candidate configuration and require a 'commit' to activate the changes.
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: load override — Option A is correct because the 'load override' command replaces the entire candidate configuration with the contents of the specified configuration file, discarding any previous candidate changes. Option B is correct because 'load merge' combines the contents of the specified configuration file with the current candidate configuration, adding or updating statements without removing existing ones. Both are standard Junos CLI commands for loading configuration data.
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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