LFCA Online Practice Questions and Answers

What command is used to set or change permission attributes of files (such as read, write, execute)?

A. chacl

B. chmod

C. chown

D. setattr

After installing the package `postfix', what command would you run in order to ensure that Postfix is started on reboot?

A. /etc/init.d/enable postfix

B. enable postfix on

C. postfix -onboot yes

D. svstemctl enable postfix

An IT associate is working with a video streaming provider. What is a common approach to reduce bandwidth cost while supporting the same or an increasing number of video streams and customers?

A. Stop serving the video streams when a certain price limit is reached.

B. Reduce the bitrate to reduce the size of the video streams.

C. Serve the video streams only to a limited number of users at a time.

D. Use a content delivery network to distribute the streams.

What does LVM stand for?

A. Logical Virtualization Manager

B. Linux Volume Manager

C. Logical Volume Manager

D. Linux Virtualization Manager

What is the underlying technology that allows containers to be restricted to defined limits for system resource usage such as CPU, memory, and network bandwidth?

A. climits

B. UnionFS

C. Namespaces

D. cqroups

Which of these providers host repositories of container images?

A. Docker Hub

B. GitHub

C. Container Index

D. GitLab

Which is a common best practice to automatically reduce disk usage associated with the storage of log files?

A. Use the loqrotate utility to periodically rotate the loq files.

B. Create a cron job that deletes all log files in the folder every day.

C. Delete the Vvar/log" directory so the log files are prevented from being created.

D. Manually empty the log files every day of the week.

By default, the Linux operating system uses what access control to manage files/users?

A. Discretionary Access Control

B. Mandatory Access Control

C. Least Privilege

D. Full Control

Which of the following deployment environments is accessed by customers/end-users in a live or real-time fashion?

A. Production

B. Runtime

C. Staging

D. Website

Which of the following commands can be used to lock a user's account so that they cannot log into a Linux server without removing any files, folders, or data?

A. lock

B. usermod

C. userdel

D. chmod