- A
GetRequest
Why wrong: GetRequest is a poll from manager to agent, not unsolicited.
- B
Response
Why wrong: Response is sent in reply to a request, not unsolicited.
- C
Trap or Inform
Traps and informs are unsolicited notifications from agent to manager; informs require acknowledgment.
- D
GetBulkRequest
Why wrong: GetBulkRequest is a manager-to-agent request for large data retrieval.
Question 815 of 2,152
300-410 SNMP Troubleshooting Practice Question
This 300-410 practice question tests your understanding of snmp troubleshooting. 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.
Which SNMPv3 message type is used by an SNMP agent to send unsolicited notifications to a manager?
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
✓
Trap or Inform
SNMPv3 agents use Trap or Inform messages to send unsolicited notifications to a manager without waiting for a polling request. Traps are unreliable (UDP, no acknowledgment), while Informs are reliable (require acknowledgment). This matches the definition of unsolicited notification in RFC 3416.
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.
- ✗
GetRequest
Why it's wrong here
GetRequest is a poll from manager to agent, not unsolicited.
- ✗
Response
Why it's wrong here
Response is sent in reply to a request, not unsolicited.
- ✓
Trap or Inform
Why this is correct
Traps and informs are unsolicited notifications from agent to manager; informs require acknowledgment.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
GetBulkRequest
Why it's wrong here
GetBulkRequest is a manager-to-agent request for large data retrieval.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between Traps and Informs as both being unsolicited notifications, but the trap here is that candidates forget that Informs are also unsolicited (agent-initiated) and are a valid SNMPv3 message type for notifications, not just Traps.
Detailed technical explanation
How to think about this question
Under the hood, SNMPv3 Trap messages are sent to UDP port 162 and are fire-and-forget, meaning the manager never acknowledges receipt. Informs, by contrast, use the same port but require the manager to send a Response, making them reliable but more bandwidth-intensive. In real-world scenarios, Traps are preferred for high-volume alerts (e.g., link flaps) to avoid congestion, while Informs are used for critical events (e.g., device reboot) where delivery assurance is needed.
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 300-410 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.
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FAQ
Questions learners often ask
What does this 300-410 question test?
SNMP Troubleshooting — This question tests SNMP Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Trap or Inform — SNMPv3 agents use Trap or Inform messages to send unsolicited notifications to a manager without waiting for a polling request. Traps are unreliable (UDP, no acknowledgment), while Informs are reliable (require acknowledgment). This matches the definition of unsolicited notification in RFC 3416.
What should I do if I get this 300-410 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: Jul 4, 2026
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