LFCS Question #47: Real Exam Question with Answer & Explanation

Question

Which of the following tasks can be accomplished using the command date? (Choose TWO correct answers.)

Options

• ASynchronize the hardware and system clocks.
• BOutput date and time in different formats.
• CSet the system clock.
• DSet the hardware clock.
• EUpdate the time via NTP.

Explanation

The date command in Linux allows users to both display the current system date and time in various formats and manually set the system clock. It provides flexibility for managing the system's time.

Common mistakes.

• A. The date command itself does not synchronize the hardware and system clocks; this is typically done using hwclock.
• D. While date sets the system clock, the hwclock command is specifically used to manage the hardware clock; date does not directly set the hardware clock.
• E. Updating the time via NTP (Network Time Protocol) is handled by NTP client daemons (e.g., ntpd, chronyd), not the date command.

Concept tested. date command usage

Reference. https://man7.org/linux/man-pages/man1/date.1.html

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