Linux Foundation Certified IT Associat - LFCA Exam Practice Test

A symbolic link named latest_log needs to be created in the current directory, pointing to the file
/var/log/app.log. Which of the following commands will accomplish this?

Which option will cause ls to display hidden files and folders?

Which of the following commands is used to detach a mounted filesystem or storage device?

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

What is the primary purpose of a continuous integration pipeline?

After installing the package postfix, which systemctl command ensures that the service starts automatically at system boot?

A Linux Administrator is reviewing a technical architecture diagram for a Linux-based web application deployed in a cloud environment. The diagram shows:
- A public subnet with a load balancer.
- Two Linux web servers in a private subnet, behind the load balancer.
- A database server in a separate private subnet, accessible only from
the web servers.
- Security groups applied to restrict traffic:
- Load balancer allows inbound traffic on port 80 and 443.
- Web servers allow inbound traffic only from the load balancer on
port 80.
- Database server allows inbound traffic only from the web servers
on port 3306.
Based on this architecture, which of the following statements is most accurate?

A developer wants to create a new branch named feature-login and switch to it immediately.
Which Git command accomplishes this in a single step?

A storage array must provide both improved read performance and the ability to survive a single disk failure while minimizing wasted capacity. Which RAID level is most appropriate?

A team is building a stateless web application. To handle traffic effectively and maintain continuous service, which approach distributes load across multiple independent servers?

A system administrator needs to stop all running processes and halt the system while leaving the power on for further diagnostics. Which command accomplishes this?

Which of the following best describes the primary benefit of using Software-as-a-Service (SaaS) compared to On-Premise, PaaS, and IaaS models?

What open source tool is used to manage instances in the cloud using infrastructure as code?

Which of the following statements is true about the GPL (GNU General Public License)?