A . It is true that every user may have their own crontab.This allows individual users to schedule tasks to be run at specific times without requiring administrative privileges1. C. The cron daemon does indeed reload crontab files automatically when necessary.This means that after editing a crontab file, there is no need to manually restart the cron service for the changes to take effect1.

107.2 Lesson 1 - Linux Professional Institute Certification Programs, which covers the automation of system administration tasks by scheduling jobs with cron.

The LPIC2 Exam Prep, which provides additional information on the LPIC-2 objectives and topics related to crontab and cron daemon.

The /etc/group file is a text file that defines the groups and their members on the system. Each line in the file represents a single group, with the following format:

group_name:password:GID:user_list

The fields are:

group_name: the name of the group

password: the (encrypted) group password, or empty for no password

GID: the numerical group ID

user_list: a comma-separated list of users who belong to the group

Therefore, the fields that can be found in the /etc/group file are the name of the group, the password of the group, and the list of users that belong to the group. The home directory and the description of the group are not part of the /etc/group file format.Reference:

group(5) - Linux manual page

/etc/group file format | Linux#

The /usr/share/zoneinfo directory contains the binary time zone files that are used by the system to determine the local time for any region. The files are organized in subdirectories by continent, country, or ocean. Some files represent the standard time zones, while others may have historical or political variations. To set the system's timezone, one can create a symbolic link from /etc/localtime to the appropriate file in the /usr/share/zoneinfo directory. For example, to set the timezone to America/New_York, one can use the command sudo ln -sf /usr/share/zoneinfo/America/New_York /etc/localtime. Alternatively, one can use the timedatectl command to set the timezone without creating the link manually.Reference:

How to Set or Change the Time Zone in Linux | Linuxize

4 Ways to Change the Timezone in Linux - wikiHow