LFCA Online Practice Questions and Answers

Which of the following would be the most appropriate use-case for a Function as a Service (FaaS) implementation?

A. An application that requires a local file system

B. An application that continuously polls for work to process

C. An event-driven application with dynamic scaling

D. An application that requires a regionally- or globally-distributed file system

Which of the following technologies is supported by the majority of cloud providers in order to support the orchestration of containerized applications?

A. Kubernetes

B. Vagrant

C. Ansible

D. Terraform

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 command do you use to view the structure of system directory hierarchies?

A. tree

B. fee | ls /etc

C. ls -t

D. ls tree

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.

An IT associate is creating a business case to adopt a DevOps approach in an organization. Which of the following is a benefit of DevOps to include in the business case?

A. The DevOps tool framework reduces the mean time to recovery and number of outaqes, which results in increased sales.

B. Developers take on the work of the operations team. The operations team, therefore, needs fewer people, reducing the number of people the organization needs to pay.

C. The frequency and stability of software deployments will be increased, which can lead to faster time to market.

D. The new DevOps team takes over the work the development team does not have time to complete. The developers then have time to create new features.

A host seems to be running slowly. What command would help diagnose which processes are using system resources?

A. df

B. free

C. uptime

D. lop

Which of the following standard log files would provide the most detailed information on why a recently upgraded custom kernel failed to boot?

A. /var/log/boot.log

B. /var/log/kern.log

C. /var/log/svslog

D. /var/log/auth.log

Which of the following best describes open source compliance?

A. A process by which software components are compiled in a development environment, pushed to staging, and then finally moved to production

B. A process in which various users of open source software observe copyright notices and satisfy license obligations for their open source software components

C. A process by which users of open source software evaluate each line of their code against an open source dictionary to determine which components have been plagiarized

D. A process by which open source software is first initiated by a requirements analysis, followed by design and then implementation, with a final testing step

What technology could be used to address software dependency conflicts between applications on the same host operating system?

A. Type 1 hvpervisors

B. Type 2 hvpervisors

C. Containers

D. cgroups