This 200-201 practice question tests your understanding of security monitoring. 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 company uses syslog for logging from all network devices. The SOC notices that logs from a critical router are not appearing in the SIEM for the past hour, but other devices are sending logs normally. Which step should the analyst take FIRST to troubleshoot?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Ping the SIEM server from the router
The SOC sees that only one router's logs are missing while all other devices are sending logs normally. This strongly suggests the issue is isolated to that router, not the SIEM server. The quickest first step is to verify basic IP connectivity from the router to the SIEM server using ping. If the router cannot reach the SIEM server (e.g., due to a routing problem, ACL, or firewall change), no syslogUDP packets (port 514) will arrive, and no amount of local configuration checking or service restarting will fix it. This aligns with the standard troubleshooting methodology of verifying Layer 3 reachability before diving into application-layer settings.
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.
✓
Ping the SIEM server from the router
Why this is correct
Verifying network connectivity helps isolate if the issue is network or device related.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Restart the router syslog service
Why it's wrong here
Restarting without cause may affect production.
✗
Check the router logging configuration
Why it's wrong here
Configuration check should follow connectivity verification.
✗
Check the SIEM server's log receiver status
Why it's wrong here
Since other devices are sending logs, the SIEM is likely working.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the principle of 'start with the simplest, least disruptive test'—candidates mistakenly jump to checking configuration or restarting services because they assume the problem is software-related, when the most common cause is a network connectivity issue that can be verified with a single ping.
Detailed technical explanation
How to think about this question
Syslog uses UDP port 514 by default, which is connectionless and provides no delivery guarantee—so a silent failure (e.g., a dropped packet due to a misconfigured ACL or a routing black hole) will not generate an error on the router. The ping command tests ICMP echo, which may be blocked even if UDP syslog traffic is allowed, but it remains the fastest way to detect a complete loss of connectivity. In practice, a network engineer would also check the router's routing table and any interface ACLs, but the first step is always to confirm the router can reach the destination IP.
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.
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.
Security Monitoring — This question tests Security Monitoring — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Ping the SIEM server from the router — The SOC sees that only one router's logs are missing while all other devices are sending logs normally. This strongly suggests the issue is isolated to that router, not the SIEM server. The quickest first step is to verify basic IP connectivity from the router to the SIEM server using ping. If the router cannot reach the SIEM server (e.g., due to a routing problem, ACL, or firewall change), no syslog UDP packets (port 514) will arrive, and no amount of local configuration checking or service restarting will fix it. This aligns with the standard troubleshooting methodology of verifying Layer 3 reachability before diving into application-layer settings.
What should I do if I get this 200-201 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: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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