A developer created a custom backup script that needs to read a configuration file that is only readable by the root user. The script is executed by a non-root user via cron. The developer wants to allow the script to read the root-only file without giving the non-root user any additional permanent privileges. Which approach should the developer take?

Set the setuid bit on the script and make it owned by root.

Compile the script into a binary and set the setuid bit on that binary, owned by root.

Add the non-root user to the root group.

Set the setgid bit on the script and make it owned by a group that can read the file.

A security auditor is reviewing a system and finds a binary file owned by root with the permissions '-rwsr-xr-x'. The auditor is concerned about the security implications. What is the primary risk associated with this file?

Any user can execute the file with root privileges.

The file will be deleted on reboot.

The file can be modified by any user.

A user wants to create a shortcut to a directory on a different filesystem. Which command should the user use?

mv /mnt/data /home/user/data_link

ln -s /mnt/data /home/user/data_link

cp -r /mnt/data /home/user/data_link

ln /mnt/data /home/user/data_link

Which command output shows that the sticky bit is set on the /tmp directory?

drwxrwxrwt 2 root root 4096 Jan 1 12:00 /tmp

drwxr-xr-x 2 root root 4096 Jan 1 12:00 /tmp

-rw-r--r-- 1 root root 4096 Jan 1 12:00 /tmp

drwxrwxrwx 2 root root 4096 Jan 1 12:00 /tmp

LPI Linux Essentials (010-160)

Domain 5Objective 4

5.4 Special Directories and Files (weight: 1) LINUX-ESSENTIALS Practice Questions (Page 2)

Part of the Topic 5: Security and File Permissions domain, which makes up ~17% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 60-minute exam (~25–40 total, ~4–7 in this domain), expect 1–2 from this objective — we provide 15 practice questions to prepare you well beyond it. (estimate)

15questions here

3free pages

4concepts

Questions 6–10

6application · medium
A developer created a custom backup script that needs to read a configuration file that is only readable by the root user. The script is executed by a non-root user via cron. The developer wants to allow the script to read the root-only file without giving the non-root user any additional permanent privileges. Which approach should the developer take?
Select an answer first
7expert · medium
A security auditor is reviewing a system and finds a binary file owned by root with the permissions '-rwsr-xr-x'. The auditor is concerned about the security implications. What is the primary risk associated with this file?
Select an answer first
8application · easy
A user wants to create a shortcut to a directory on a different filesystem. Which command should the user use?
Select an answer first
9foundation · easy
Which command output shows that the sticky bit is set on the /tmp directory?
Select an answer first
10foundation · easy
Which directory contains device files that represent hardware devices and are used by the kernel to interact with them?
Select an answer first

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5.4 Special Directories and Files (weight: 1) LINUX-ESSENTIALS Practice Questions (Page 2)

Questions 6–10

A security auditor is reviewing a system and finds a binary file owned by root with the permissions '-rwsr-xr-x'. The auditor is concerned about the security implications. What is the primary risk associated with this file?

A user wants to create a shortcut to a directory on a different filesystem. Which command should the user use?

Which command output shows that the sticky bit is set on the /tmp directory?

Which directory contains device files that represent hardware devices and are used by the kernel to interact with them?

Keep studying — Topic 5: Security and File Permissions