Question 1mediummultiple choice
Review the full routing breakdown →- A
DNS
Why wrong: Distractor.
- B
NTP
Correct choice.
- C
SNMP
Why wrong: Distractor.
- D
CDP
Why wrong: Distractor.
Question 1,045 of 1,819
Quick Answer
The answer is NTP, or Network Time Protocol, because consistent timestamps across routers and switches depend on synchronized clocks, and NTP is the dedicated service that aligns all devices to a single authoritative time source. Without it, logs from different devices can show conflicting times, making event correlation during an outage nearly impossible. On the CCNA 200-301 v2 exam, this concept tests your understanding of network management fundamentals, often appearing in questions about syslog reliability or troubleshooting steps. A common trap is to confuse NTP with SNMP or DNS, but remember: NTP is strictly for time synchronization, not for monitoring or name resolution. For a quick memory tip, think of the phrase “NTP keeps the clock in lockstep”—if timestamps are off, always verify NTP first.
CCNA Network Services and Security Practice Question
This 200-301 practice question tests your understanding of network services and security. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices.. 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 team wants routers and switches to have consistent timestamps in logs so event correlation is accurate during an outage. Which service should they verify first?
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 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
✓
NTP
Consistent timestamps depend on synchronized clocks. NTP is the service used to keep network devices aligned to the same time reference, which makes syslog analysis and troubleshooting much more reliable.
Key principle: Network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DNS
Why it's wrong here
Distractor.
When this WOULD be correct
If the exam question asked about ensuring that devices can resolve hostnames to IP addresses for logging purposes, then DNS would be the correct answer. For instance, a scenario focusing on troubleshooting connectivity issues due to incorrect hostname resolution would make DNS relevant.
- ✓
NTP
Why this is correct
Correct choice.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices.
- ✗
SNMP
Why it's wrong here
Distractor.
When this WOULD be correct
If the question were about monitoring network performance and gathering statistics from devices, then SNMP would be the correct answer, as it provides valuable data for network management and troubleshooting.
- ✗
CDP
Why it's wrong here
Distractor.
When this WOULD be correct
If the exam question asked which protocol is essential for network device discovery and management in a Cisco environment, CDP would be the correct answer. This scenario would focus on identifying devices and their capabilities rather than time synchronization.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓NTPCorrect answer▾
Why this is correct
Correct choice.
✗DNSWrong answer — click to see why▾
Why this is wrong here
DNS (Domain Name System) resolves hostnames to IP addresses and has no role in time synchronization. DNS does not provide timestamp information or clock setting capabilities. Verifying DNS would not help ensure consistent timestamps in logs.
★ When this WOULD be the correct answer
If the exam question asked about ensuring that devices can resolve hostnames to IP addresses for logging purposes, then DNS would be the correct answer. For instance, a scenario focusing on troubleshooting connectivity issues due to incorrect hostname resolution would make DNS relevant.
Why candidates choose this
Students may think DNS is involved because some logging systems use DNS for reverse lookups, but this does not affect timestamp accuracy. The similarity in acronyms (DNS vs. NTP) can also cause confusion.
✗SNMPWrong answer — click to see why▾
Why this is wrong here
SNMP (Simple Network Management Protocol) is used for monitoring and managing network devices, not for time synchronization. While SNMP can retrieve device uptime or timestamps from MIBs, it does not set or synchronize clocks. Relying on SNMP for time consistency would not correct clock drift.
★ When this WOULD be the correct answer
If the question were about monitoring network performance and gathering statistics from devices, then SNMP would be the correct answer, as it provides valuable data for network management and troubleshooting.
Why candidates choose this
Students might confuse SNMP with NTP because both are network management protocols. SNMP is often associated with monitoring and logging, leading to the mistaken belief that it handles timestamps.
✗CDPWrong answer — click to see why▾
Why this is wrong here
CDP (Cisco Discovery Protocol) is a Layer 2 protocol used to discover neighboring Cisco devices and their capabilities. It does not provide time synchronization or affect timestamps in logs. CDP is irrelevant for ensuring consistent timestamps.
★ When this WOULD be the correct answer
If the exam question asked which protocol is essential for network device discovery and management in a Cisco environment, CDP would be the correct answer. This scenario would focus on identifying devices and their capabilities rather than time synchronization.
Why candidates choose this
Students might associate CDP with device discovery and assume it also synchronizes time, or confuse CDP with NTP due to both being Cisco-related protocols. However, CDP has no time-related functionality.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
Don't confuse protocols with similar acronyms or those related to network management. Focus on the specific function of time synchronization.
Detailed technical explanation
How to think about this question
Network devices such as routers and switches generate logs that include timestamps to record events accurately. For effective troubleshooting and event correlation, these timestamps must be consistent across all devices. The Network Time Protocol (NTP) is the standardized protocol used to synchronize the clocks of network devices to a common time source, typically an authoritative time server. NTP ensures that all devices maintain accurate and consistent time, which is critical for log analysis and network management. In Cisco networking environments, enabling and verifying NTP synchronization on routers and switches is essential for maintaining consistent timestamps. Devices configured with NTP clients regularly query NTP servers to adjust their internal clocks, preventing drift and ensuring uniform time references. Without NTP, devices rely on their internal clocks, which can vary and cause discrepancies in log timestamps, complicating troubleshooting and event correlation. A common exam trap is confusing NTP with other network services that also deal with network management or device communication, such as DNS, SNMP, or CDP. While DNS resolves names to IP addresses, SNMP monitors device status, and CDP discovers neighboring devices, none provide time synchronization. In practical networks, failing to configure NTP leads to inconsistent log timestamps, making it difficult to correlate events during outages or security incidents.
KKey Concepts to Remember
- Network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices.
- Consistent timestamps in logs are critical for accurate event correlation and troubleshooting during network outages.
- Cisco devices configured as NTP clients regularly adjust their internal clocks by querying NTP servers to prevent time drift.
- Without NTP, device clocks can drift independently, causing discrepancies in log timestamps and complicating network analysis.
- DNS resolves hostnames to IP addresses but does not provide time synchronization for consistent logging.
- SNMP monitors and manages network devices but does not synchronize device clocks or timestamps.
- CDP discovers directly connected Cisco devices but does not affect time synchronization or logging accuracy.
- Verifying NTP configuration is the first step to ensure all network devices have aligned clocks for reliable log timestamps.
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
Network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices.
Real-world example
How this comes up in practice
A practitioner preparing for the 200-301 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Review network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices., then practise related 200-301 questions on the same topic to reinforce the concept.
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Network Services and Security — study guide chapter
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Network Services and Security practice questions
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FAQ
Questions learners often ask
What does this 200-301 question test?
Network Services and Security — This question tests Network Services and Security — Network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices..
What is the correct answer to this question?
The correct answer is: NTP — Consistent timestamps depend on synchronized clocks. NTP is the service used to keep network devices aligned to the same time reference, which makes syslog analysis and troubleshooting much more reliable.
What should I do if I get this 200-301 question wrong?
Review network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices., then practise related 200-301 questions on the same topic to reinforce the concept.
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?
Network Time Protocol (NTP) synchronizes clocks on routers and switches to ensure consistent timestamps across devices.
About these practice questions
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Same concept, more angles
1 more ways this is tested on 200-301
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A network team wants all devices to timestamp logs consistently so event correlation works across routers, switches, and firewalls. Which service should they configure first?
medium- A.DNS
- B.DHCP
- ✓ C.NTP
- D.TFTP
Why C: NTP provides consistent time across the infrastructure. Syslog carries log messages, but if device clocks are wrong, the log entries will still be hard to correlate. Accurate time is a foundational service for troubleshooting and forensics.
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Last reviewed: May 17, 2026
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