Quick Answer
The answer is the `show route receive-protocol bgp 192.0.2.1` command. This is the correct choice because it directly displays the exact routes received from a specific BGP peer, along with the policy or filter actions applied to each route, such as "reject" or "accept." When diagnosing route rejection, this command provides the most immediate visibility into whether an inbound route is being dropped by an import policy or firewall filter, rather than just confirming the session state. On the JNCIA-Junos exam, this question tests your ability to differentiate between BGP session verification commands and route-level diagnostics; a common trap is to use `show bgp summary` or `show route advertising-protocol`, which only show session status or outbound routes, not inbound rejections. For a memory tip, think "Receive to Reject" — if you want to see what the peer sent and what got blocked, use the `receive-protocol` command to catch the rejection in action.
This JNCIA-JUNOS practice question tests your understanding of user interfaces. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
You are a network engineer for a service provider that recently deployed a Juniper MX router at a new Point of Presence (PoP). The router is used to aggregate customer connections and exchange routes with upstream providers via BGP. After the initial configuration, you notice that the router is not learning any routes from one of the upstream BGP peers. You have verified that the BGP session is established (state Established) and that the peer is sending routes. You suspect that the issue might be related to the firewall filter or routing policy. You want to determine if any inbound routes are being rejected and why. Which command would provide the most direct information about why routes are being rejected?
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 route protocol bgp
Why wrong: Shows routes that are in the table, not rejected ones.
show route receive-protocol bgp 192.0.2.1
Displays received routes and indicates if any are rejected by policy.
show bgp summary
Why wrong: Shows BGP session status, not route acceptance details.
show firewall filter <filter-name>
Why wrong: Shows firewall counters, not BGP route acceptance.
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 route receive-protocol bgp 192.0.2.1
Option B, 'show route receive-protocol bgp 192.0.2.1', is correct because it displays the exact routes received from a specific BGP peer along with any policy or filter actions applied (e.g., reject, accept). This command directly shows whether routes are being rejected and the reason (e.g., due to an import policy or firewall filter), making it the most direct diagnostic tool for the described issue.
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 route protocol bgp
Why it's wrong here
Shows routes that are in the table, not rejected ones.
show route receive-protocol bgp 192.0.2.1
Why this is correct
Displays received routes and indicates if any are rejected by policy.
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 bgp summary
Why it's wrong here
Shows BGP session status, not route acceptance details.
show firewall filter <filter-name>
Common exam traps
The trap here is that candidates often assume 'show bgp summary' or 'show route protocol bgp' will reveal route rejection details, but they only show aggregated statistics or installed routes, not the per-peer policy decisions that cause routes to be hidden or rejected.
Trap categories for this question
Command / output trap
Shows routes that are in the table, not rejected ones.
Detailed technical explanation
The 'show route receive-protocol bgp <neighbor>' command retrieves the raw update messages received from the peer before any import policy or firewall filter is applied, showing the routes as received and any actions (e.g., reject) taken by the import policy. Under the hood, Junos applies import policies in the order of the routing-options configuration, and this command reveals the policy decision at the point of reception, which is critical for debugging route filtering. In real-world scenarios, an upstream peer might send a default route or specific prefixes that are silently dropped by an import policy that lacks a 'then accept' term, and this command pinpoints exactly which term caused the rejection.
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.
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FAQ
User Interfaces — This question tests User Interfaces — Read the scenario before looking for a memorised answer..
The correct answer is: show route receive-protocol bgp 192.0.2.1 — Option B, 'show route receive-protocol bgp 192.0.2.1', is correct because it displays the exact routes received from a specific BGP peer along with any policy or filter actions applied (e.g., reject, accept). This command directly shows whether routes are being rejected and the reason (e.g., due to an import policy or firewall filter), making it the most direct diagnostic tool for the described issue.
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 11, 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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