CCNA Network Services and Security Practice Question
Which two statements about NTP are correct? (Choose two.)
⚠ Common exam trap
A common exam trap is mistaking NTP for a service that replaces DNS or manages link aggregation like EtherChannel. Some candidates incorrectly believe NTP handles domain name resolution or negotiates EtherChannel parameters because these are also fundamental network services. However, NTP’s sole purpose is to synchronize time across devices. Selecting options that confuse NTP with DNS or EtherChannel leads to incorrect answers. Understanding that NTP only manages time synchronization helps avoid this trap and ensures accurate selection of correct options related to time correlation and clock synchronization.
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
✓
Accurate time helps correlate log messages across multiple devices.
NTP synchronizes time across devices, which is important for logging, certificates, and event correlation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Accurate time helps correlate log messages across multiple devices.
Why this is correct
When network devices have synchronized time, their logs can be aligned to a common timeline, allowing an administrator to trace a single event across multiple routers, switches, and firewalls. Without synchronized time, an attacker or a fault can be obscured by skewed timestamps. This correlation is fundamental to efficient incident response and root-cause analysis.
- ✗
NTP replaces the need for DNS in enterprise networks.
Why it's wrong here
DNS and NTP are unrelated protocols that solve different problems: DNS translates hostnames to IP addresses, while NTP synchronizes clocks. Replacing DNS with NTP would be impossible because NTP carries no name resolution data. Enterprises need both services for normal operation, so NTP is in no way a substitute for DNS.
When this WOULD be correct
In a different question asking about protocols that can replace or serve as alternatives to DNS in certain scenarios, such as in a specialized network environment where time-based domain resolution is implemented, option B could be correct.
- ✓
NTP synchronizes clocks between network devices and time sources.
Why this is correct
NTP uses a hierarchical system of time sources, with stratum levels indicating distance from the reference clock. It distributes Coordinated Universal Time (UTC) via UDP port 123, enabling devices to maintain consistent system clocks. Accurate synchronization ensures that time-sensitive protocols and authentication mechanisms operate correctly across the network.
- ✗
NTP is used to negotiate EtherChannel parameters.
Why it's wrong here
EtherChannel is a link aggregation technology that bundles multiple physical interfaces into one logical link, governed by PAgP or LACP. NTP controls clock synchronization and does not participate in interface negotiation or bundling. These operate at different layers and have no interaction, so the statement is false.
When this WOULD be correct
If the exam question were to ask about protocols used for negotiating link aggregation parameters in a network, then option D could be correct in the context of discussing protocols like LACP or PAgP, which do manage EtherChannel configurations.
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.
✓Accurate time helps correlate log messages across multiple devices.Correct answer▾
Why this is correct
When network devices have synchronized time, their logs can be aligned to a common timeline, allowing an administrator to trace a single event across multiple routers, switches, and firewalls. Without synchronized time, an attacker or a fault can be obscured by skewed timestamps. This correlation is fundamental to efficient incident response and root-cause analysis.
✗NTP replaces the need for DNS in enterprise networks.Wrong answer — click to see why▾
Why this is wrong here
NTP (Network Time Protocol) is specifically designed for time synchronization and does not replace DNS (Domain Name System), which resolves domain names to IP addresses. Both protocols serve distinct purposes in network operations.
★ When this WOULD be the correct answer
In a different question asking about protocols that can replace or serve as alternatives to DNS in certain scenarios, such as in a specialized network environment where time-based domain resolution is implemented, option B could be correct.
Why candidates choose this
Candidates may confuse the roles of NTP and DNS, thinking that accurate time synchronization could somehow eliminate the need for DNS in managing network resources, leading them to select this option mistakenly.
✗NTP is used to negotiate EtherChannel parameters.Wrong answer — click to see why▾
Why this is wrong here
NTP (Network Time Protocol) is specifically designed for time synchronization and does not handle EtherChannel negotiations, which are related to link aggregation protocols like LACP.
★ When this WOULD be the correct answer
If the exam question were to ask about protocols used for negotiating link aggregation parameters in a network, then option D could be correct in the context of discussing protocols like LACP or PAgP, which do manage EtherChannel configurations.
Why candidates choose this
Candidates may confuse NTP with other network protocols and assume that it could play a role in device configuration processes, leading them to mistakenly select this option without fully understanding the specific functions of NTP.
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?”
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Key term
Network Time Protocol
Network Time Protocol (NTP) is a networking protocol that synchronizes the clocks of computers and devices over a network to a common reference time source, typically Coordinated Universal Time (UTC).
Key term
NTP
Network Time Protocol is a networking protocol used to synchronize the clocks of computers and devices over a network to a common time reference.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-301 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 200-301 exam.