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:
R1# show snmp community
Community name: public
Community Index: public
Storage-Type: nonvolatile
Access: read-only
View: v1default
Community name: private
Community Index: private
Storage-Type: nonvolatile
Access: read-write
View: v1default
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The router has two SNMP communities: 'public' for read-only and 'private' for read-write access.
The show snmp community command displays configured SNMP community strings and their access levels. The output shows two communities: 'public' with read-only access and 'private' with read-write access, both using the default view.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 router has two SNMP communities: 'public' for read-only and 'private' for read-write access.
Why this is correct
The output clearly shows 'public' with read-only and 'private' with read-write access.
Related concept
Static NAT maps one inside address to one outside address.
✗
The router only allows SNMP writes with the 'public' community.
Why it's wrong here
'public' has read-only access, so writes are not allowed.
✗
The router is not configured for SNMP because no community strings are shown.
Why it's wrong here
Two community strings are displayed, so SNMP is configured.
✗
The router uses SNMPv3 and these communities are for backward compatibility.
Why it's wrong here
Community strings are used in SNMPv1/v2c, not SNMPv3.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 300-410 NAT questions on configuration and troubleshooting.
SNMP Troubleshooting — This question tests SNMP Troubleshooting — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The router has two SNMP communities: 'public' for read-only and 'private' for read-write access. — The show snmp community command displays configured SNMP community strings and their access levels. The output shows two communities: 'public' with read-only access and 'private' with read-write access, both using the default view.
What should I do if I get this 300-410 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 300-410 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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