- A
It sets the keepalive interval to 10 seconds and the hold time to 30 seconds for all BGP neighbors.
Why wrong: Incorrect. This command is under the neighbor context and affects only that specific neighbor.
- B
It sets the keepalive interval to 10 seconds and the hold time to 30 seconds for neighbor 10.0.0.2 only.
Correct. The timers command under a neighbor applies only to that neighbor.
- C
It sets the BGP keepalive interval to 30 seconds and the hold time to 10 seconds for neighbor 10.0.0.2.
Why wrong: Incorrect. The first value is keepalive, second is hold time.
- D
It configures the BGP session to use a keepalive of 10 seconds and a hold time of 30 seconds, but only if the neighbor supports it.
Why wrong: Incorrect. The timers are configured locally; the neighbor must have matching or compatible timers to form the session.
CCNP Virtual Machines and Hypervisors Practice Question
This 350-401 practice question tests your understanding of virtual machines and hypervisors. 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.
Consider the following configuration snippet:
router bgp 65000
bgp router-id 192.168.1.1
neighbor 10.0.0.2 remote-as 65001 neighbor 10.0.0.2 timers 10 30
!
What is the effect of the 'timers 10 30' command under the BGP neighbor?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
It sets the keepalive interval to 10 seconds and the hold time to 30 seconds for neighbor 10.0.0.2 only.
Option B is correct because the 'timers 10 30' command under the BGP neighbor configuration mode sets the keepalive interval to 10 seconds and the hold time to 30 seconds specifically for that neighbor (10.0.0.2). This per-neighbor timer configuration overrides any global BGP timers set under the router bgp process, allowing granular control over individual BGP sessions.
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.
- ✗
It sets the keepalive interval to 10 seconds and the hold time to 30 seconds for all BGP neighbors.
Why it's wrong here
Incorrect. This command is under the neighbor context and affects only that specific neighbor.
- ✓
It sets the keepalive interval to 10 seconds and the hold time to 30 seconds for neighbor 10.0.0.2 only.
Why this is correct
Correct. The timers command under a neighbor applies only to that neighbor.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
It sets the BGP keepalive interval to 30 seconds and the hold time to 10 seconds for neighbor 10.0.0.2.
Why it's wrong here
Incorrect. The first value is keepalive, second is hold time.
- ✗
It configures the BGP session to use a keepalive of 10 seconds and a hold time of 30 seconds, but only if the neighbor supports it.
Why it's wrong here
Incorrect. The timers are configured locally; the neighbor must have matching or compatible timers to form the session.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between global and per-neighbor BGP timer configuration, and the trap here is that candidates confuse the 'timers' command under neighbor with the global 'timers bgp' command, or misorder the keepalive and hold time values.
Trap categories for this question
Command / output trap
Incorrect. This command is under the neighbor context and affects only that specific neighbor.
Detailed technical explanation
How to think about this question
BGP keepalive and hold timers are negotiated during the OPEN message exchange; each peer proposes its configured hold time, and the session uses the smaller of the two hold times. The keepalive interval is then derived as one-third of the negotiated hold time, unless explicitly set. Per-neighbor timers allow an administrator to fine-tune convergence for specific peers, such as reducing hold time to 10 seconds for fast failure detection on critical links, while leaving other neighbors at default values (e.g., 60 seconds hold).
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 network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
What to study next
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FAQ
Questions learners often ask
What does this 350-401 question test?
Virtual Machines and Hypervisors — This question tests Virtual Machines and Hypervisors — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: It sets the keepalive interval to 10 seconds and the hold time to 30 seconds for neighbor 10.0.0.2 only. — Option B is correct because the 'timers 10 30' command under the BGP neighbor configuration mode sets the keepalive interval to 10 seconds and the hold time to 30 seconds specifically for that neighbor (10.0.0.2). This per-neighbor timer configuration overrides any global BGP timers set under the router bgp process, allowing granular control over individual BGP sessions.
What should I do if I get this 350-401 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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Last reviewed: Jun 24, 2026
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