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CCNP Practice Question: Which three statements about SNMP trap and inform…
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.
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.
- ✓
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.
- ✓
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.
- ✗
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.
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Same concept, more angles
1 more way 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).
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.