Question 214 of 1,420
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350-401 Practice Question: Which two statements about SNMP trap and inform…
Which two statements about SNMP trap and inform operations are true? (Choose two.)
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
✓
An SNMP inform request is acknowledged by the manager with a response PDU.
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).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
An SNMP inform request is acknowledged by the manager with a response PDU.
Why this is correct
Correct because informs use a request/response mechanism; the manager sends a response to confirm receipt.
- ✗
SNMP traps are more reliable than informs because they use UDP port 162.
Why it's wrong here
Incorrect because traps are unacknowledged and less reliable; informs are acknowledged and thus more reliable.
- ✗
Both SNMPv1 and SNMPv2c support the inform operation.
Why it's wrong here
Incorrect because SNMPv1 does not support informs; informs were introduced in SNMPv2c.
- ✓
Informs consume more network bandwidth and memory resources than traps.
Why this is correct
Correct because informs require the manager to send a response, and the agent must retain the inform until acknowledged, increasing resource usage.
- ✗
Traps are sent from the manager to the agent to request configuration changes.
Why it's wrong here
Incorrect because traps are unsolicited messages from the agent to the manager, not the other way around.
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Last reviewed: Jun 18, 2026
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