Checking chronyd time sources | LinuC Level 1 102 Exam original practice question

1.09.1Basic

List the NTP sources used by a running chronyd and their selection state.

Which command is appropriate?

Hint 1: Focus on clock layers

Separate the system clock, RTC, timezone rules, and NTP synchronization before comparing the commands or settings.

Hint 2: Key terms

Review the short definitions of system clocks, RTC, timezones, and NTP synchronization involved.

chronyd: A daemon that continuously disciplines the system clock using NTP.
chronyc: A client used to query chronyd time sources and tracking state.
sources: The chrony operation that lists configured or discovered NTP sources.
tracking: The chrony operation that summarizes the selected source and clock tracking.
NTP source: A network server used as a reference for synchronizing a clock.

Detailed explanation

Incorrectchronyd sources

Incorrect. chronyd is the daemon; state queries normally use chronyc.

Incorrectchronyc tracking

Incorrect. tracking summarizes clock tracking rather than listing sources.

Correctchronyc sources

Correct. sources lists chronyd's time sources and status.

Incorrectntpq sources

Incorrect. ntpq is for ntpd, not chronyc's source subcommand.

An example you can run in a temporary verification environment.

chronyc help 2>&1 | grep -E 'sources' | head -n 1

sources commandの説明行

Foundation review

The kernel-maintained time used by applications and timestamps.

The battery-backed hardware clock used to seed time during boot.

A process that compares a clock with remote time sources and corrects drift.

Question IDKL-102-1079

Environmentchronyc help / daemonへの問い合わせなし

Last technical review2026-08-13

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