Question 186 of 2,152

SNMP Troubleshooting →mediumMultiple ChoiceObjective-mapped

SNMP CPU Utilization Polling Troubleshooting: SNMP View Exclusion

This 300-410 practice question tests your understanding of snmp troubleshooting. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.

A network engineer is troubleshooting why the NMS cannot poll the CPU utilization of router R7 via SNMP. The router has 'snmp-server community cisco RO' configured. The NMS can poll interface statistics and routing table entries successfully. What is the most likely cause?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

A
The engineer configured an SNMP view that excludes the CPU utilization OID tree.
Correct because an SNMP view can restrict access to specific MIB objects; if the view does not include the CPU OIDs, polling fails.
B
The router needs the 'snmp-server enable traps cpu' command to allow CPU polling.
Why wrong: Incorrect because that command enables CPU traps, not polling; polling is independent.
C
The NMS is using an incorrect OID for CPU utilization; the correct OID is in the CISCO-PROCESS-MIB.
Why wrong: Incorrect because the NMS can poll other OIDs, so it is likely using the correct OID; the issue is on the router side.
D
The router's CPU is not supported for SNMP polling due to hardware limitations.
Why wrong: Incorrect because most Cisco routers support CPU polling via SNMP.

Full breakdown with real-world context →

Quick Answer

The answer is an SNMP view that excludes the CPU utilization OID tree. When an NMS can successfully poll interface statistics and routing table entries but fails on CPU utilization, the community string is functional, but the specific OIDs under the CISCO-PROCESS-MIB (1.3.6.1.4.1.9.9.109) are likely blocked by a configured SNMP view. This is a classic SNMP CPU polling troubleshooting scenario on the Cisco CCNP ENARSI 300-410 exam, testing your understanding that SNMP views restrict access to specific MIB subtrees even when the community string grants overall read-only access. A common trap is assuming the CPU MIB isn’t loaded, but on IOS, the CISCO-PROCESS-MIB is typically available by default; the real issue is often an exclusionary view applied to the community. Memory tip: if other OIDs work but CPU doesn’t, think “view exclusion,” not “MIB missing.”

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

✓

The engineer configured an SNMP view that excludes the CPU utilization OID tree.

Option A is correct because the NMS can poll interface statistics and routing table entries, which are typically included in the default SNMP view, but cannot poll CPU utilization. This indicates that an SNMP view has been configured that explicitly excludes the OID tree for CPU utilization (e.g., 1.3.6.1.4.1.9.9.109 or similar), while still allowing other MIB objects. The 'snmp-server community cisco RO' command alone would normally grant full read-only access unless a view is applied to restrict it.

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.

✓
The engineer configured an SNMP view that excludes the CPU utilization OID tree.
Why this is correct
Correct because an SNMP view can restrict access to specific MIB objects; if the view does not include the CPU OIDs, polling fails.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The router needs the 'snmp-server enable traps cpu' command to allow CPU polling.
Why it's wrong here
Incorrect because that command enables CPU traps, not polling; polling is independent.
✗
The NMS is using an incorrect OID for CPU utilization; the correct OID is in the CISCO-PROCESS-MIB.
Why it's wrong here
Incorrect because the NMS can poll other OIDs, so it is likely using the correct OID; the issue is on the router side.
✗
The router's CPU is not supported for SNMP polling due to hardware limitations.
Why it's wrong here
Incorrect because most Cisco routers support CPU polling via SNMP.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Cisco often tests the distinction between SNMP polling (GET operations) and SNMP notifications (traps), leading candidates to incorrectly select 'snmp-server enable traps cpu' when the real issue is a restricted SNMP view that blocks the CPU utilization OID subtree.

Trap categories for this question

Command / output trap
Incorrect because that command enables CPU traps, not polling; polling is independent.

Detailed technical explanation

How to think about this question

SNMP views are configured using the 'snmp-server view' command, which allows or restricts access to specific OID subtrees. When a community string is associated with a view (e.g., 'snmp-server community cisco view RESTRICTED-RO'), only the OIDs within that view are accessible. The default view includes the entire OID tree, but an explicit view can exclude the CPU utilization subtree (e.g., 1.3.6.1.4.1.9.9.109.1.1.1.1.5) while still permitting access to interface MIB (IF-MIB) and IP routing table MIB (IP-FORWARD-MIB) objects.

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.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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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: The engineer configured an SNMP view that excludes the CPU utilization OID tree. — Option A is correct because the NMS can poll interface statistics and routing table entries, which are typically included in the default SNMP view, but cannot poll CPU utilization. This indicates that an SNMP view has been configured that explicitly excludes the OID tree for CPU utilization (e.g., 1.3.6.1.4.1.9.9.109 or similar), while still allowing other MIB objects. The 'snmp-server community cisco RO' command alone would normally grant full read-only access unless a view is applied to restrict it.

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.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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