Quick Answer
The correct command is show interfaces ge-0/0/1 terse. This command is the standard Junos method to view interface operational status because it strips away all configuration details and presents only the essential operational state: the link status (shown as up or down) and the protocol state (also up or down) for the specified interface. On the Juniper Networks Certified Associate Junos JNCIA-Junos exam, this question tests your ability to differentiate between the various show interfaces modifiers—a common trap is choosing show interfaces extensive (which buries the status in verbose output) or show interfaces detail (which still includes configuration). The terse modifier is specifically designed for a quick, clean snapshot of interface health. To remember it, think of the word “terse” as meaning “short and to the point”—just like the output you need for a fast operational check.
This JNCIA-JUNOS practice question tests your understanding of operational monitoring and maintenance. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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.
A junior administrator wants to view only the operational state of interface ge-0/0/1, including its link status and protocol state. Which command should they use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
show interface ge-0/0/1
Why wrong: Invalid command; should be 'show interfaces' plural.
show interfaces ge-0/0/1 terse
Shows link and protocol status in brief format.
show configuration interfaces ge-0/0/1
Why wrong: Shows configuration, not operational state.
show interfaces ge-0/0/1 extensive
Why wrong: Shows extensive details, not terse.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
show interfaces ge-0/0/1 terse
Option B is correct because the 'show interfaces ge-0/0/1 terse' command displays a concise operational state of the interface, including link status (up/down) and protocol state (up/down) without configuration details. This is the standard Junos command for quickly verifying the operational status of a specific interface.
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.
show interface ge-0/0/1
Why it's wrong here
Invalid command; should be 'show interfaces' plural.
show interfaces ge-0/0/1 terse
Why this is correct
Shows link and protocol status in brief format.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
show configuration interfaces ge-0/0/1
Why it's wrong here
Shows configuration, not operational state.
show interfaces ge-0/0/1 extensive
Why it's wrong here
Shows extensive details, not terse.
Common exam traps
The trap here is that candidates familiar with Cisco IOS might type 'show interface' (singular) instead of the Junos plural 'show interfaces', or they might choose 'extensive' thinking more detail is better, when 'terse' is the precise tool for a quick operational state check.
Trap categories for this question
Command / output trap
Invalid command; should be 'show interfaces' plural.
Detailed technical explanation
The 'terse' output in Junos is designed for quick operational checks, showing only the interface name, admin status, link status, protocol status, and a brief description. This is particularly useful in scripts or when monitoring many interfaces, as it reduces noise and focuses on the essential state information. The link status reflects the physical layer (Layer 1) state, while the protocol state indicates whether the interface is configured and enabled for higher-layer protocols (Layer 2/3).
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 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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Operational Monitoring and Maintenance — study guide chapter
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FAQ
Operational Monitoring and Maintenance — This question tests Operational Monitoring and Maintenance — Read the scenario before looking for a memorised answer..
The correct answer is: show interfaces ge-0/0/1 terse — Option B is correct because the 'show interfaces ge-0/0/1 terse' command displays a concise operational state of the interface, including link status (up/down) and protocol state (up/down) without configuration details. This is the standard Junos command for quickly verifying the operational status of a specific interface.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This JNCIA-JUNOS practice question is part of Courseiva's free Juniper Networks 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 JNCIA-JUNOS exam.
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