- A
The router's SNMP agent is disabled.
Why wrong: Incorrect because 'snmp-server enable traps' implies the agent is enabled; the issue is with specific trap generation.
- B
The community string 'public' is not defined on the router.
Why wrong: Incorrect because the community string is used in the trap destination command; it must be defined with 'snmp-server community public RO' or similar.
- C
The router lacks specific trap configuration for CPU and memory utilization.
Correct because 'snmp-server enable traps' alone does not enable all traps; specific traps like 'snmp-server enable traps cpu threshold' and 'snmp-server enable traps memory' are needed.
- D
The NMS is using SNMPv3, which is incompatible with SNMPv2c traps.
Why wrong: Incorrect because the NMS is configured for SNMPv2c as per the host command; compatibility is not an issue here.
Quick Answer
The answer is that the router lacks specific trap configuration for CPU and memory utilization. While the global `snmp-server enable traps` command activates generic SNMP notifications, it does not automatically enable traps for CPU or memory metrics; these require explicit subcommands such as `snmp-server enable traps cpu threshold` or `snmp-server enable traps memory`. On the ENCOR 350-401 exam, this scenario tests your understanding that SNMP trap granularity is not inherited—a common oversight where engineers assume a blanket enable covers all trap types. Remember the memory tip: "Generic enables the gate, specific opens the drawer"—without naming the exact resource, the trap never leaves the router.
CCNP SNMP and Syslog Practice Question
This 350-401 practice question tests your understanding of snmp and syslog. 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 configures SNMPv2c on a Cisco router to monitor CPU and memory utilization. The NMS is reachable and configured with the same community string 'public'. However, the NMS receives no traps from the router. The engineer verifies that the router's SNMP configuration includes 'snmp-server enable traps' and 'snmp-server host 192.168.1.100 version 2c public'. What is the most likely cause of the missing traps?
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.
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 router lacks specific trap configuration for CPU and memory utilization.
The issue is that the trap destination is configured, but the router may not be sending traps due to missing trap-specific configuration or a filtering issue. The most common oversight is not enabling the specific trap types (e.g., CPU, memory) or not having the SNMP agent respond to polls. However, the correct answer focuses on the fact that 'snmp-server enable traps' without specifying trap types only enables generic traps; CPU and memory traps require explicit configuration.
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's SNMP agent is disabled.
Why it's wrong here
Incorrect because 'snmp-server enable traps' implies the agent is enabled; the issue is with specific trap generation.
- ✗
The community string 'public' is not defined on the router.
Why it's wrong here
Incorrect because the community string is used in the trap destination command; it must be defined with 'snmp-server community public RO' or similar.
- ✓
The router lacks specific trap configuration for CPU and memory utilization.
Why this is correct
Correct because 'snmp-server enable traps' alone does not enable all traps; specific traps like 'snmp-server enable traps cpu threshold' and 'snmp-server enable traps memory' are needed.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
The NMS is using SNMPv3, which is incompatible with SNMPv2c traps.
Why it's wrong here
Incorrect because the NMS is configured for SNMPv2c as per the host command; compatibility is not an issue here.
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.
Trap categories for this question
Similar concept trap
Incorrect because the community string is used in the trap destination command; it must be defined with 'snmp-server community public RO' or similar.
Command / output trap
Incorrect because the community string is used in the trap destination command; it must be defined with 'snmp-server community public RO' or similar.
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.
What to study next
Got this wrong? Here's your next step.
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 350-401 NAT questions on configuration and troubleshooting.
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FAQ
Questions learners often ask
What does this 350-401 question test?
SNMP and Syslog — This question tests SNMP and Syslog — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The router lacks specific trap configuration for CPU and memory utilization. — The issue is that the trap destination is configured, but the router may not be sending traps due to missing trap-specific configuration or a filtering issue. The most common oversight is not enabling the specific trap types (e.g., CPU, memory) or not having the SNMP agent respond to polls. However, the correct answer focuses on the fact that 'snmp-server enable traps' without specifying trap types only enables generic traps; CPU and memory traps require explicit configuration.
What should I do if I get this 350-401 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 350-401 NAT questions on configuration and troubleshooting.
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?
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 18, 2026
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.
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