- A
The NMS is configured with a community string that does not match the community string used in the 'snmp-server host' command on the router.
The NMS must use the same community string as the router's trap community; otherwise, the NMS will discard the traps.
- B
The router has an ACL applied to its VTY lines that denies UDP port 162.
Why wrong: VTY lines are for Telnet/SSH access, not for SNMP traffic. An ACL on VTY lines does not affect SNMP trap delivery.
- C
The 'snmp-server enable traps' command is missing from the router configuration.
Without 'snmp-server enable traps', the router does not generate any traps, even if 'snmp-server host' is configured.
- D
The NMS is listening on UDP port 161 instead of UDP port 162.
Why wrong: SNMP traps are sent to UDP port 162, not 161. If the NMS listens on port 161, it will not receive traps, but the question asks for actions that prevent the NMS from receiving traps. This is an incorrect action because the NMS misconfiguration is not an action taken on the router; the question implies actions on the router side.
- E
The 'snmp-server host' command specifies the IP address of a different NMS.
If the trap destination is a different IP address, the intended NMS will never receive the traps.
300-410 SNMP Troubleshooting Practice Question
This 300-410 practice question tests your understanding of snmp troubleshooting. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Which TWO actions will prevent an SNMPv2c NMS from receiving traps from a Cisco router? (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
The NMS is configured with a community string that does not match the community string used in the 'snmp-server host' command on the router.
To receive traps, the NMS must be configured as a trap receiver with the correct community string, and the router must send traps to the correct IP and UDP port 162. If the community string on the NMS does not match the router's trap community, traps are discarded. If the router is configured to send traps to a different IP than the NMS, the NMS never receives them. The 'snmp-server enable traps' command enables trap generation; without it, no traps are sent. The 'snmp-server host' command specifies the destination; if omitted, traps are not sent. ACLs applied to the router's VTY lines do not affect SNMP trap traffic, which uses UDP port 162.
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 NMS is configured with a community string that does not match the community string used in the 'snmp-server host' command on the router.
Why this is correct
The NMS must use the same community string as the router's trap community; otherwise, the NMS will discard the traps.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
The router has an ACL applied to its VTY lines that denies UDP port 162.
- ✓
The 'snmp-server enable traps' command is missing from the router configuration.
- ✗
The NMS is listening on UDP port 161 instead of UDP port 162.
Why it's wrong here
SNMP traps are sent to UDP port 162, not 161. If the NMS listens on port 161, it will not receive traps, but the question asks for actions that prevent the NMS from receiving traps. This is an incorrect action because the NMS misconfiguration is not an action taken on the router; the question implies actions on the router side.
- ✓
The 'snmp-server host' command specifies the IP address of a different NMS.
Why this is correct
If the trap destination is a different IP address, the intended NMS will never receive the traps.
Related concept
Static NAT maps one inside address to one outside address.
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.
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 300-410 NAT questions on configuration and troubleshooting.
- →
SNMP Troubleshooting — study guide chapter
Learn the concepts, then practise the questions
- →
SNMP Troubleshooting practice questions
Targeted practice on this topic area only
- →
All 300-410 questions
2,152 questions across all exam domains
- →
Cisco CCNP ENARSI 300-410 study guide
Full concept coverage aligned to exam objectives
- →
300-410 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related 300-410 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Layer 3 Technologies practice questions
Practise 300-410 questions linked to Layer 3 Technologies.
EIGRP Troubleshooting practice questions
Practise 300-410 questions linked to EIGRP Troubleshooting.
OSPF Troubleshooting (v2/v3) practice questions
Practise 300-410 questions linked to OSPF Troubleshooting (v2/v3).
BGP Troubleshooting practice questions
Practise 300-410 questions linked to BGP Troubleshooting.
Route Redistribution practice questions
Practise 300-410 questions linked to Route Redistribution.
Policy-Based Routing (PBR) practice questions
Practise 300-410 questions linked to Policy-Based Routing (PBR).
VRF-Lite practice questions
Practise 300-410 questions linked to VRF-Lite.
Route Maps and Route Filtering practice questions
Practise 300-410 questions linked to Route Maps and Route Filtering.
Administrative Distance practice questions
Practise 300-410 questions linked to Administrative Distance.
Route Summarization practice questions
Practise 300-410 questions linked to Route Summarization.
Bidirectional Forwarding Detection (BFD) practice questions
Practise 300-410 questions linked to Bidirectional Forwarding Detection (BFD).
VPN Technologies practice questions
Practise 300-410 questions linked to VPN Technologies.
Practice this exam
Start a free 300-410 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this 300-410 question test?
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 NMS is configured with a community string that does not match the community string used in the 'snmp-server host' command on the router. — To receive traps, the NMS must be configured as a trap receiver with the correct community string, and the router must send traps to the correct IP and UDP port 162. If the community string on the NMS does not match the router's trap community, traps are discarded. If the router is configured to send traps to a different IP than the NMS, the NMS never receives them. The 'snmp-server enable traps' command enables trap generation; without it, no traps are sent. The 'snmp-server host' command specifies the destination; if omitted, traps are not sent. ACLs applied to the router's VTY lines do not affect SNMP trap traffic, which uses UDP port 162.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 18, 2026
This 300-410 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 300-410 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.