The answer is to modify /etc/chrony/chrony.conf by adding the pool directive with iburst for upstream synchronization and the allow directive to define the local network subnet. This configuration is correct because Chrony, the default NTP implementation on modern RHEL/CentOS 7+ systems, uses the pool directive to fetch time from NTP pool servers (e.g., pool.ntp.org) with iburst for faster initial sync, while the allow directive explicitly grants peer access to local clients, such as those on 192.168.1.0/24. On the CompTIA Linux+ XK0-005 exam, this question tests your ability to distinguish Chrony from legacy ntpd and the client-only systemd-timesyncd; a common trap is choosing ntpd without the allow directive or confusing the directive name with “permit.” Remember the mnemonic “Pool to pull, Allow to share” — pool pulls time from the internet, allow shares it locally.
XK0-005 System Management Practice Question
This XK0-005 practice question tests your understanding of system management. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 system administrator needs to configure a Linux server to automatically synchronize time with the NTP pool servers. The server should also act as an NTP peer for other servers on the local network. Which file should be modified, and which directive should be added?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
/etc/chrony/chrony.conf with "pool pool.ntp.org iburst" and "allow 192.168.1.0/24"
Chrony is the default NTP implementation on modern RHEL/CentOS 7+ and many distributions. The configuration file is /etc/chrony/chrony.conf. The 'pool' directive with 'iburst' synchronizes with NTP servers, and 'allow' specifies which networks can query the server as an NTP peer. Option A uses ntpd but lacks the 'allow' directive. Option C uses timesyncd which is client-only. Option D has typo and incorrect directive.
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.
✓
/etc/chrony/chrony.conf with "pool pool.ntp.org iburst" and "allow 192.168.1.0/24"
Why this is correct
Correct file and directives for both client sync and allowing other servers to peer.
Related concept
Read the scenario before looking for a memorised answer.
✗
/etc/npt.conf with "peer pool.ntp.org"
Why it's wrong here
Typo in filename and 'peer' is not used for NTP pool; also missing allow directive.
✗
/etc/systemd/timesyncd.conf with "NTP=pool.ntp.org" and "LocalPort=123"
Why it's wrong here
timesyncd is a SNTP client only; it cannot act as a server.
✗
/etc/ntp.conf with "server pool.ntp.org iburst"
Why it's wrong here
ntpd does not have a built-in 'allow' directive for acting as a peer; also ntp.conf is not typical for newer systems.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 practitioner preparing for the XK0-005 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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this XK0-005 question in full detail.
Identify which XK0-005 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
System Management — This question tests System Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: /etc/chrony/chrony.conf with "pool pool.ntp.org iburst" and "allow 192.168.1.0/24" — Chrony is the default NTP implementation on modern RHEL/CentOS 7+ and many distributions. The configuration file is /etc/chrony/chrony.conf. The 'pool' directive with 'iburst' synchronizes with NTP servers, and 'allow' specifies which networks can query the server as an NTP peer. Option A uses ntpd but lacks the 'allow' directive. Option C uses timesyncd which is client-only. Option D has typo and incorrect directive.
What should I do if I get this XK0-005 question wrong?
Identify which XK0-005 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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