- A
SNMP access is controlled by ACLs: ACL 10 for 'public' and ACL 20 for 'private'.
The output shows the mapping between ACLs and communities.
- B
No ACLs are applied to SNMP, so all access is allowed.
Why wrong: ACLs 10 and 20 are applied to the communities.
- C
The router uses SNMPv3 exclusively.
Why wrong: Community strings indicate SNMPv1/v2c.
- D
The 'public' community has read-write access.
Why wrong: Access level is not shown here; it depends on the community configuration.
Question 87 of 2,152
300-410 SNMP Troubleshooting Practice Question
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 runs the following command to troubleshoot SNMP access lists:
R1# show snmp access Access-list: 10
Community: public View: v1default
Access-list: 20
Community: private View: v1default
What does this output indicate?
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
✓
SNMP access is controlled by ACLs: ACL 10 for 'public' and ACL 20 for 'private'.
The 'show snmp access' output displays the configured SNMP access control entries, which map community strings to access control lists (ACLs). In this case, ACL 10 is associated with the 'public' community and ACL 20 with the 'private' community, meaning SNMP access is restricted based on these ACLs. This is the standard method for controlling SNMPv1/v2c access, as the router uses the ACL to permit or deny SNMP requests from specific source IP addresses.
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.
- ✓
SNMP access is controlled by ACLs: ACL 10 for 'public' and ACL 20 for 'private'.
Why this is correct
The output shows the mapping between ACLs and communities.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
No ACLs are applied to SNMP, so all access is allowed.
Why it's wrong here
ACLs 10 and 20 are applied to the communities.
- ✗
The router uses SNMPv3 exclusively.
Why it's wrong here
Community strings indicate SNMPv1/v2c.
- ✗
The 'public' community has read-write access.
Why it's wrong here
Access level is not shown here; it depends on the community configuration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between what 'show snmp access' reveals (ACL-to-community mapping) versus what it does not reveal (read-write permissions), leading candidates to incorrectly assume that the 'public' community has read-write access or that no ACLs are applied.
Trap categories for this question
Command / output trap
Access level is not shown here; it depends on the community configuration.
Detailed technical explanation
How to think about this question
In SNMPv1/v2c, the 'snmp-server community' command associates a community string with an ACL and an access level (RO or RW). The 'show snmp access' command only displays the ACL-to-community mapping and the view, not the read-write status. A common real-world scenario is misconfiguring the ACL order or forgetting to apply an ACL, which can lead to unintended SNMP access; verifying with 'show snmp access' helps identify such issues.
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 security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
Visual reference
What to study next
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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: SNMP access is controlled by ACLs: ACL 10 for 'public' and ACL 20 for 'private'. — The 'show snmp access' output displays the configured SNMP access control entries, which map community strings to access control lists (ACLs). In this case, ACL 10 is associated with the 'public' community and ACL 20 with the 'private' community, meaning SNMP access is restricted based on these ACLs. This is the standard method for controlling SNMPv1/v2c access, as the router uses the ACL to permit or deny SNMP requests from specific source IP addresses.
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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