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: nTP synchronizes time across all network devices to ensure consistent timestamps for accurate log correlation and troubleshooting.. 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 all devices to timestamp logs consistently so event correlation works across routers, switches, and firewalls. Which service should they configure 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.
DNS
Why wrong: DNS resolves names, not timestamps.
DHCP
Why wrong: DHCP assigns addressing information to clients.
NTP
NTP synchronizes time across devices.
TFTP
Why wrong: TFTP transfers files and backups, not time.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
NTP
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.
Key principle: NTP synchronizes time across all network devices to ensure consistent timestamps for accurate log correlation and troubleshooting.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
DNS
Why it's wrong here
DNS resolves names, not timestamps.
When this WOULD be correct
In a scenario where the question asks about configuring services for network name resolution and ensuring devices can locate each other by hostname, DNS would be the correct answer. For example, if the question specified the need for devices to resolve hostnames to IP addresses before any logging can occur, DNS would be essential.
DHCP
Why it's wrong here
DHCP assigns addressing information to clients.
When this WOULD be correct
If the exam question asked about configuring network services to ensure devices can communicate their IP addresses and maintain network connectivity, DHCP would be the correct answer, as it is essential for managing IP address allocation in a network.
NTP
TFTP
Why it's wrong here
TFTP transfers files and backups, not time.
When this WOULD be correct
If the question were about ensuring devices can receive configuration files or firmware updates consistently, TFTP would be the correct answer. In that scenario, the focus would be on file transfer protocols rather than time synchronization.
Option-by-option analysis
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.
Why this is correct
NTP synchronizes time across devices.
Why this is wrong here
DNS is primarily used for resolving domain names to IP addresses and does not provide any functionality for synchronizing time across devices. Therefore, it is not relevant for ensuring consistent timestamps in log files.
★ When this WOULD be the correct answer
In a scenario where the question asks about configuring services for network name resolution and ensuring devices can locate each other by hostname, DNS would be the correct answer. For example, if the question specified the need for devices to resolve hostnames to IP addresses before any logging can occur, DNS would be essential.
Why candidates choose this
Candidates may choose DNS because they associate it with network services and may overlook the specific requirement for time synchronization, leading them to select a familiar but incorrect option.
Why this is wrong here
DHCP is primarily used for dynamically assigning IP addresses to devices on a network, not for synchronizing timestamps. Therefore, it does not address the requirement for consistent log timestamps across devices.
★ When this WOULD be the correct answer
If the exam question asked about configuring network services to ensure devices can communicate their IP addresses and maintain network connectivity, DHCP would be the correct answer, as it is essential for managing IP address allocation in a network.
Why candidates choose this
Candidates may choose DHCP because they recognize it as a fundamental network service that facilitates device communication, leading them to mistakenly associate it with the need for synchronized logging without understanding the specific requirement for time synchronization.
Why this is wrong here
TFTP (Trivial File Transfer Protocol) is primarily used for transferring files, not for synchronizing time across devices. Therefore, it does not address the requirement for consistent timestamping of logs necessary for event correlation.
★ When this WOULD be the correct answer
If the question were about ensuring devices can receive configuration files or firmware updates consistently, TFTP would be the correct answer. In that scenario, the focus would be on file transfer protocols rather than time synchronization.
Why candidates choose this
Candidates may confuse TFTP with other network services and assume that file transfer is essential for log management, leading them to incorrectly select it as a necessary service for timestamp synchronization.
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
A common exam trap is selecting DHCP or DNS as the service to synchronize device clocks. DHCP only assigns IP addresses and related network parameters, while DNS resolves domain names to IP addresses; neither service manages time synchronization. Another tempting but incorrect choice is TFTP, which is used for transferring files such as configurations or IOS images, not for time services. Candidates might confuse the need for consistent network services with time synchronization, but only NTP provides the accurate, network-wide clock synchronization required for consistent log timestamps. Misunderstanding this leads to incorrect answers and potential operational issues in real networks.
Detailed technical explanation
Network Time Protocol (NTP) is a protocol designed to synchronize the clocks of devices over packet-switched, variable-latency data networks. It ensures that all network devices, including routers, switches, and firewalls, maintain consistent and accurate time. This synchronization is critical for correlating logs, troubleshooting, and security auditing because timestamps must align across devices to reconstruct event sequences accurately. When configuring a network for consistent log timestamps, NTP is the foundational service to implement first. Devices use NTP to query a reliable time source, such as an authoritative NTP server or an external time reference, and adjust their internal clocks accordingly. Cisco devices support NTP client and server modes, allowing flexible deployment. Without NTP, devices rely on their internal clocks, which can drift and cause inconsistent timestamps, complicating event correlation. A common exam trap is confusing NTP with other network services like DHCP or DNS, which serve different purposes. DHCP assigns IP addresses, and DNS resolves domain names, neither of which affect time synchronization. TFTP is used for file transfers, not time services. In practical networks, failing to configure NTP leads to logs with mismatched timestamps, making troubleshooting and security incident analysis unreliable. Thus, NTP is essential for maintaining network-wide time consistency.
Key takeaway
NTP synchronizes time across all network devices to ensure consistent timestamps for accurate log correlation and troubleshooting.
Real-world example
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. NTP synchronizes time across all network devices to ensure consistent timestamps for accurate log correlation and troubleshooting. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Review nTP synchronizes time across all network devices to ensure consistent timestamps for accurate log correlation and troubleshooting., then practise related 200-301 questions on the same topic to reinforce the concept.
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FAQ
Network Services and Security — This question tests Network Services and Security — NTP synchronizes time across all network devices to ensure consistent timestamps for accurate log correlation and troubleshooting..
The correct answer is: NTP — 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.
Review nTP synchronizes time across all network devices to ensure consistent timestamps for accurate log correlation and troubleshooting., then practise related 200-301 questions on the same topic to reinforce the concept.
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
NTP synchronizes time across all network devices to ensure consistent timestamps for accurate log correlation and troubleshooting.
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Last reviewed: May 17, 2026
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