- A
Traps are unacknowledged notifications sent from the SNMP agent to the manager.
Correct: Traps are unacknowledged; the manager does not send a response.
- B
Informs are acknowledged notifications that require a response from the manager.
Correct: Informs are confirmed; the manager must send a response to acknowledge receipt.
- C
Informs use UDP port 162, the same as traps.
Correct: Both traps and informs are sent to UDP port 162 on the manager.
- D
Traps are more reliable than informs because they are sent with a higher priority.
Why wrong: Incorrect: Informs are more reliable because they are acknowledged; traps are less reliable.
- E
Informs consume less memory and processing than traps because they do not require state tracking.
Why wrong: Incorrect: Informs consume more memory and processing because they require state tracking for acknowledgment and retransmission.
Quick Answer
The answer is that SNMP traps and informs both use UDP port 162, but they differ fundamentally in reliability and resource usage. Traps are unacknowledged messages sent from agent to manager, making them faster but less reliable, while informs require the manager to send back a confirmation, allowing the agent to retransmit if no response is received. On the ENCOR 350-401 exam, this distinction tests your understanding of SNMPv2c and SNMPv3 notification behavior, often appearing in multiple-choice questions that ask you to identify true statements about both operations. A common trap is assuming informs use a different port—they do not, but they do consume more memory and processing because the agent must maintain state for acknowledgment. To remember the difference, think: traps are “fire and forget,” while informs are “send and confirm.”
350-401 SNMP and Syslog Practice Question
This 350-401 practice question tests your understanding of snmp and syslog. 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 three statements about SNMP trap and inform operations are true? (Choose three.)
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
Traps are unacknowledged notifications sent from the SNMP agent to the manager.
SNMP traps are unacknowledged messages sent from agent to manager. Informs are acknowledged (confirmed) notifications. Informs require a response from the manager and can be retransmitted if no response is received. Traps are sent via UDP port 162 by default. Informs also use UDP port 162. Informs consume more memory and processing because they maintain state for acknowledgment. Traps are less reliable because they are not acknowledged.
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.
- ✓
Traps are unacknowledged notifications sent from the SNMP agent to the manager.
Why this is correct
Correct: Traps are unacknowledged; the manager does not send a response.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Informs are acknowledged notifications that require a response from the manager.
Why this is correct
Correct: Informs are confirmed; the manager must send a response to acknowledge receipt.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Informs use UDP port 162, the same as traps.
Why this is correct
Correct: Both traps and informs are sent to UDP port 162 on the manager.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Traps are more reliable than informs because they are sent with a higher priority.
Why it's wrong here
Incorrect: Informs are more reliable because they are acknowledged; traps are less reliable.
- ✗
Informs consume less memory and processing than traps because they do not require state tracking.
Why it's wrong here
Incorrect: Informs consume more memory and processing because they require state tracking for acknowledgment and retransmission.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 350-401 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.
Identify which 350-401 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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SNMP and Syslog — study guide chapter
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FAQ
Questions learners often ask
What does this 350-401 question test?
SNMP and Syslog — This question tests SNMP and Syslog — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Traps are unacknowledged notifications sent from the SNMP agent to the manager. — SNMP traps are unacknowledged messages sent from agent to manager. Informs are acknowledged (confirmed) notifications. Informs require a response from the manager and can be retransmitted if no response is received. Traps are sent via UDP port 162 by default. Informs also use UDP port 162. Informs consume more memory and processing because they maintain state for acknowledgment. Traps are less reliable because they are not acknowledged.
What should I do if I get this 350-401 question wrong?
Identify which 350-401 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on 350-401
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which two statements about SNMP trap and inform operations are true? (Choose two.)
hard- ✓ A.An SNMP inform request is acknowledged by the manager with a response PDU.
- B.SNMP traps are more reliable than informs because they use UDP port 162.
- C.Both SNMPv1 and SNMPv2c support the inform operation.
- ✓ D.Informs consume more network bandwidth and memory resources than traps.
- E.Traps are sent from the manager to the agent to request configuration changes.
Why A: SNMP traps are unacknowledged, while informs are acknowledged (confirmed) by the manager. Informs use more bandwidth and are more reliable. Both traps and informs are sent from agent to manager. SNMPv2c supports both traps and informs. SNMPv1 only supports traps (no informs).
Last reviewed: Jun 18, 2026
This 350-401 practice question is part of Courseiva's free Cisco 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 350-401 exam.
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