LFCA Online Practice Questions and Answers

A team just developed a new feature on the company's main web application. An IT associate wants to test this new feature by making it available for only 10% of the users. If everything works without any problems for a week, the associate will then make it available for all users. Which release type should be used to achieve this goal?

A. Canary release

B. Experimental release

C. Alpha release

D. Beta release

In which file are system and user account passwords stored?

A. /etc/passwd

B. /etc/login.defs

C. /etc/shadow

D. /etc/secure

A company's IT associate has been asked to switch to single-user mode on a running Linux server in order to perform some troubleshooting. Of the options below, which is the best way of doing this?

A. su single

B. init singleuser

C. Isu 1

D. linit 1

Which of the following authentication method types would include using a password in combination with a hardware token?

A. Multi-Factor Authentication

B. Multi-Staged Security

C. Hardware Encryption Authentication

D. Multi-Step Analysis

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

What is an appropriate cost consideration when implementing serverless functions in the cloud?

A. vCPU resources and disk cache

B. Elapsed lime of function execution and memory used

C. Virtual machine configuration and memory allocation

D. Runtime environment and container configuration

When using vi or vim to edit a file, how do you exit without saving?

A. :q!

B. ZZ

C. :wq!

D. :exit

What does LVM stand for?

A. Logical Virtualization Manager

B. Linux Volume Manager

C. Logical Volume Manager

D. Linux Virtualization Manager

A software development team uses a single physical server for testing the latest code in multiple environments: development, pre-production, and production.

What is the recommended approach to maintain the basic security of these environments?

A. Assign different developers on the team to work on test, pre-prod. and prod code.

B. Implement peer review for all the changes deployed into any of the environments

C. Develop and deploy each environment with its own set of software tools.

D. Use different user/group IDs for deploying and running workload in each environment.

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