Changing the system time zone | LinuC Level 1 102 Exam original practice question

1.09.1Basic

On a system using systemd, change the system-wide time zone to Asia/Tokyo.

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.

timedatectl: A systemd command for managing clock settings and synchronization state.
set-timezone: The operation that assigns a timezone identifier to the whole system.
set-time: The timedatectl operation that directly changes the system clock.
set-ntp: The operation that enables or disables network time synchronization.
Timezone identifier: A name that selects regional UTC offset and daylight-saving rules.

Detailed explanation

Incorrecttimedatectl set-time Asia/Tokyo

Incorrect. set-time sets a date/time value, not a time-zone identifier.

Incorrecttimedatectl set-ntp Asia/Tokyo

Incorrect. set-ntp enables or disables time synchronization.

Correcttimedatectl set-timezone Asia/Tokyo

Correct. It changes the system time zone to Asia/Tokyo.

Incorrecttzselect Asia/Tokyo

Incorrect. tzselect suggests a value but does not directly change the system setting.

An example you can run in a temporary verification environment.

timedatectl --help | grep -E 'set-timezone'

system timezoneを設定する説明行

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-102-1075

Environmentsystemd timedatectl help / 設定変更なし

Last technical review2026-08-13

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