Quick Answer
The answer is the discard static route option. This is correct because a discard route silently drops all traffic destined for the 10.10.10.0/24 network without generating any ICMP unreachable messages back to the source, whereas a reject route explicitly sends an ICMP destination unreachable notification. On the JNCIA-Junos exam, this distinction between discard vs reject static route is a frequent topic, testing your understanding of how Junos handles unreachable destinations and the impact on network behavior. A common trap is confusing these two options, as both prevent forwarding but differ in their response to the sender. Remember the memory tip: “Discard is dead silent, Reject replies.”
This JNCIA-JUNOS practice question tests your understanding of routing fundamentals. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 wants to drop traffic destined to the 10.10.10.0/24 network without sending an ICMP unreachable message back to the source. Which static route option should be used?
reject
Why wrong: Reject drops traffic but sends ICMP unreachable.
discard
Discard drops traffic silently, no ICMP notification.
next-table
Why wrong: Next-table routes traffic to another routing table, not drop.
resolve
Why wrong: Resolve is used for indirect next-hops, not for dropping traffic.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
discard
The correct answer is C. The 'discard' option drops traffic silently without generating ICMP unreachable, while 'reject' sends an ICMP unreachable. 'Next-table' forwards to another routing table, and 'resolve' requires a resolvable next-hop. Therefore, discard is the appropriate choice.
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.
reject
Why it's wrong here
Reject drops traffic but sends ICMP unreachable.
discard
Why this is correct
Discard drops traffic silently, no ICMP notification.
Related concept
Read the scenario before looking for a memorised answer.
next-table
Why it's wrong here
Next-table routes traffic to another routing table, not drop.
resolve
Why it's wrong here
Resolve is used for indirect next-hops, not for dropping traffic.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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 JNCIA-JUNOS exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Routing Fundamentals — This question tests Routing Fundamentals — Read the scenario before looking for a memorised answer..
The correct answer is: discard — The correct answer is C. The 'discard' option drops traffic silently without generating ICMP unreachable, while 'reject' sends an ICMP unreachable. 'Next-table' forwards to another routing table, and 'resolve' requires a resolvable next-hop. Therefore, discard is the appropriate choice.
Identify which JNCIA-JUNOS exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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