How is the file format of /etc/crontab different from a normal crontab file? (Select TWO).

Neither `/etc/crontab` nor a normal user crontab typically include a year field; cron jobs are scheduled based on the standard five time/date fields.

A normal user crontab file is not directly edited; it must be installed and managed using the `crontab -e` command, which places it into a specific system directory like `/var/spool/cron/crontabs`.

Both `/etc/crontab` and normal user crontab files allow for environment variable substitution and definition within their respective formats.

The `/etc/crontab` file, being a system-wide crontab, includes an additional field after the minute, hour, day of month, month, and day of week fields to specify the user under whose privileges the command will be executed, a field not present in user-specific crontabs.