Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
What is the primary purpose of NTP in a routed network?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
To synchronize device clocks
Correct. NTP provides time synchronization.
B
Distractor review
To encrypt management traffic
Encrypting management traffic is handled by protocols such as SSH, TLS, or IPsec.
C
Distractor review
To resolve hostnames into IP addresses
DNS handles hostname resolution.
D
Distractor review
To assign IP addresses dynamically
DHCP handles dynamic IP addressing.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is mistaking NTP’s function for other common network services such as DHCP, DNS, or encryption protocols. Candidates might incorrectly associate NTP with dynamic IP address assignment or hostname resolution because these are also fundamental network services. Another trap is confusing NTP with security protocols that encrypt management traffic, like SSH or IPsec. The key mistake is overlooking that NTP’s sole purpose is to synchronize device clocks, which is crucial for accurate logging and coordinated network operations. Recognizing this distinction prevents selecting incorrect options that describe unrelated network functions.
Technical deep dive
How to think about this question
Network Time Protocol (NTP) is a protocol designed to synchronize the clocks of devices across a routed network. Accurate time synchronization is critical for network devices to maintain consistent timestamps on logs, coordinate time-sensitive operations, and support security mechanisms such as certificate validation. NTP operates by exchanging time information between a client and a server, adjusting the client's clock to match a reliable time source, often a stratum 1 server connected to an atomic clock or GPS. In Cisco routed networks, NTP ensures that all routers, switches, and other network devices share a consistent time reference. This synchronization is essential for troubleshooting, as logs from different devices can be correlated accurately. It also supports protocols and services that rely on time, such as syslog, SNMP traps, and security features like Kerberos authentication. Cisco devices can be configured as NTP clients or servers, and they use hierarchical stratum levels to determine the best time source. A common exam trap is confusing NTP’s purpose with other network services like DHCP or DNS. While DHCP assigns IP addresses dynamically and DNS resolves hostnames, NTP strictly manages time synchronization. Misunderstanding this can lead to selecting incorrect answers related to encryption or address assignment. Practically, without NTP, network logs can become unreliable, complicating troubleshooting and security audits, making NTP a foundational IP service in Cisco networks.
KKey Concepts to Remember
- NTP synchronizes device clocks across a routed network to ensure consistent timestamps for logs and events.
- Cisco devices use NTP clients and servers to maintain accurate time based on hierarchical stratum levels.
- Accurate time synchronization supports security protocols, troubleshooting, and coordinated network operations.
- NTP does not assign IP addresses; DHCP handles dynamic IP address allocation in networks.
- Hostname resolution is managed by DNS, not by NTP, which strictly manages time synchronization.
- Encrypting management traffic is performed by protocols like SSH or IPsec, not by NTP.
- Without NTP, log timestamps can become inconsistent, complicating network troubleshooting and audits.
- NTP operates by exchanging time information between devices to adjust clocks to a reliable time source.
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?
Question 2
A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?
Question 3
What is the OSPF metric called?
Question 4
A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?
Question 5
A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?
Question 6
A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?
FAQ
Questions learners often ask
What does this 200-301 question test?
NTP synchronizes device clocks across a routed network to ensure consistent timestamps for logs and events.
What is the correct answer to this question?
The correct answer is: To synchronize device clocks — Network Time Protocol is used to keep device clocks synchronized. Accurate time is especially important for logs, troubleshooting, certificates, and coordinated events across devices.
What should I do if I get this 200-301 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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