EX200 Timed Practice Test 2 — 10 Questions

Question 1

Order the steps to configure SELinux to allow Apache to read files in a custom directory /webcontent.

Question 2

Arrange the steps to configure a network bond (mode 1) using two interfaces (eth0, eth1) in RHEL.

Question 3

Order the steps to configure firewall rules to allow HTTP and HTTPS traffic using firewalld.

Question 4

Arrange the steps to configure a logical volume snapshot named 'snap_lv_data' of logical volume 'lv_data'.

Question 5

Order the steps to configure a new user 'jdoe' with UID 2000, home directory /home/jdoe, and secondary group 'staff'.

Question 6

Put the steps to configure a new swap partition of 2 GiB on /dev/sdc1 and enable it in order.

Question 7

A backup script uses tar to create an archive, but the administrator wants to exclude the /tmp directory from the backup. Which tar option should be added?

Accepted Answer

--exclude=/tmp. Option A is correct because the `--exclude=PATTERN` option in tar tells the command to skip files or directories matching the given pattern. By specifying `--exclude=/tmp`, the tar archive will omit the /tmp directory and all its contents, which is exactly what the administrator needs for the backup script.

Answer

--ignore-failed-read

Answer

--exclude-from=/tmp

Answer

-X /tmp

Question 8

An administrator wants to display a list of all currently logged-in users. Which command is most appropriate?

Accepted Answer

who. The `who` command displays a list of currently logged-in users along with their terminal, login time, and originating host. It is the most straightforward and appropriate command for this specific task, as it directly queries the system's utmp database to show active sessions.

Answer

w

Answer

last

Answer

users

Question 9

A new Linux administrator needs to read the manual page for the 'ls' command but also wants to search for the word 'color' within the manual. Which command accomplishes this?

Accepted Answer

man ls and then type /color. Option B is correct because the man command opens the manual page for 'ls', and typing '/color' within the pager (usually less) performs an interactive forward search for the string 'color'. This allows the administrator to read the manual and search for the term in one session.

Answer

man -k color

Answer

man ls | grep color

Answer

man color

Question 10

You are a system administrator for a company running Red Hat Enterprise Linux 8. A developer reports that a script which runs daily at 2 AM is failing. The script is located at /opt/scripts/backup.sh and is owned by root. The developer says the script runs fine when executed manually with './backup.sh' from the /opt/scripts directory. The script is scheduled via a root crontab entry: '0 2 * * * /opt/scripts/backup.sh'. However, the script fails because it cannot find a configuration file located at './config.ini'. What is the most likely cause and the correct solution?

Accepted Answer

Cron uses a different PATH. Modify the script to use absolute paths for all files, including config.ini.. The script fails because cron jobs run with a minimal environment, including a restricted PATH that typically does not include the script's directory. When the script uses a relative path like './config.ini', the cron job's working directory is not /opt/scripts (it defaults to the user's home directory, /root for root cron), so the file is not found. The correct solution is to modify the script to use absolute paths, such as /opt/scripts/config.ini, ensuring it works regardless of the cron environment.

Answer

The configuration file is missing. Copy config.ini to /root.

Answer

The cron job runs as a different user. Change the cron job to run as the developer's user.

Answer

The script is not executable. Run chmod +x /opt/scripts/backup.sh.