- (Exam Topic 1)
Which command makes the shell variable named VARIABLE visible to subshells?

1. A. export $VARIABLE
2. B. export VARIABLE
3. C. set $VARIABLE
4. D. set VARIABLE
5. E. env VARIABLE

Correct Answer: B

- (Exam Topic 3)
In case neither cron.allow nor cron.deny exist in /etc/, which of the following is true?

1. A. Without additional configuration, no users may have user specific crontabs.
2. B. Without additional configuration, all users may have user specific crontabs.
3. C. The cron daemon will refuse to start and report missing files in the system's logfile.
4. D. When a user creates a user specific crontab the system administrator must approve it explicitly.

Correct Answer: A

- (Exam Topic 3)
How is the file format of /etc/crontab different from a normal crontab file? (Select TWO correct answers)

1. A. The /etc/crontab file can specify a year field.
2. B. A normal crontab file must be installed with the crontab command.
3. C. A normal crontab file allows for environment variable substitution.
4. D. The /etc/crontab file has a user field for commands.

Correct Answer: BD

- (Exam Topic 4)
Why is the correct configuration of a system's time zone important?

1. A. Because the conversion of Unix timestamps to local time relies on the time zone configuration.
2. B. Because the time zone is saved as part of the modification times of files and cannot be changed after a file is created.
3. C. Because the environment variables LANG and LC_MESSAGES are, by default, set according to the time zone.
4. D. Because NTP chooses servers nearby based on the configured time zone.

Correct Answer: A

- (Exam Topic 3)
Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays?

1. A. 0 * * * 30 myscript
2. B. 30 * * * 6 myscript
3. C. 30 0 * * 0 myscript
4. D. 30 0-23 * * 0 myscript
5. E. 0 0-23 * * 30 myscript

Correct Answer: D