An organization wants to allow only the users `alice` and `bob` to create cron jobs, while denying all other users. The system currently has no cron access control files. Which configuration achieves this?

Create /etc/cron.deny containing all usernames except alice and bob.

Create both /etc/cron.allow and /etc/cron.deny, listing alice and bob in cron.deny.

Set the permissions on /usr/bin/crontab to 750 with group ownership of a group containing alice and bob.

Create /etc/cron.allow containing alice and bob, one per line.

A user's cron job runs a script that requires the environment variable `APP_HOME` to be set to `/opt/myapp`. The script also produces diagnostic output that should be emailed to the user. Which crontab entry accomplishes this?

`APP_HOME=/opt/myapp` on one line, then `0 * * * * /opt/myapp/run.sh` on the next line.

`0 * * * * export APP_HOME=/opt/myapp; /opt/myapp/run.sh`

`0 * * * * /opt/myapp/run.sh > /dev/null 2>&1` with APP_HOME set in /etc/profile.

`0 * * * * APP_HOME=/opt/myapp /opt/myapp/run.sh`

A laptop is used intermittently and is often suspended overnight. The administrator needs a daily backup to run, but the exact time is not critical — it must simply run once per day, even if the laptop was off at the scheduled time. Which configuration is most appropriate?

Use `at 02:00` to schedule the backup daily.

Add a crontab entry for root with `0 2 * * * /usr/local/sbin/backup`.

Place the backup script in /etc/cron.daily/ and enable anacron.

Place the script in /etc/cron.hourly/ so it runs frequently.

In a crontab file, how can you set an environment variable for all jobs in that crontab?

By using the 'env' command as the first word of each job.

By placing the variable in the /etc/environment file.

By using the 'export' command inside each job command.

By adding a line like 'PATH=/usr/local/bin:/usr/bin' at the top of the crontab.

Which crontab entry runs the command /usr/local/bin/backup.sh every day at 2:30 AM?

2 30 * * * /usr/local/bin/backup.sh

30 2 1 1 * /usr/local/bin/backup.sh

30 2 * * * /usr/local/bin/backup.sh

* * 2 30 * /usr/local/bin/backup.sh

LPI LPIC-1:Linux Administrator (101-500)

Domain 7Objective 2

107.2 Automate System Administration Tasks by Scheduling Jobs LPIC-1 Practice Questions (Page 2)

Part of the Topic 107: Administrative Tasks domain, which makes up ~6% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~2–4 in this domain), expect 1–1 from this objective — we provide 23 practice questions to prepare you well beyond it. (estimate)

23questions here

5free pages

8concepts

Questions 6–10

6application · medium
An organization wants to allow only the users `alice` and `bob` to create cron jobs, while denying all other users. The system currently has no cron access control files. Which configuration achieves this?
Select an answer first
7application · medium
A user's cron job runs a script that requires the environment variable `APP_HOME` to be set to `/opt/myapp`. The script also produces diagnostic output that should be emailed to the user. Which crontab entry accomplishes this?
Select an answer first
8expert · medium
A laptop is used intermittently and is often suspended overnight. The administrator needs a daily backup to run, but the exact time is not critical — it must simply run once per day, even if the laptop was off at the scheduled time. Which configuration is most appropriate?
Select an answer first
9foundation · easy
In a crontab file, how can you set an environment variable for all jobs in that crontab?
Select an answer first
10foundation · easy
Which crontab entry runs the command /usr/local/bin/backup.sh every day at 2:30 AM?
Select an answer first

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