Linux Foundation Linux Foundation Certifications LFCA Questions & Answers

• Question 41:

  Encryption that uses both a private key and public key is known as what?

  A. Key Pair Encryption (symmetric cryptography)

  B. HMAC Cryptography (hash based message authentication]

  C. Public Key Cryptography (asymmetric cryptography)

  D. DPE (dual-phased hybrid encryption]

  Correct Answer: C

• Question 42:

  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

  Correct Answer: D

• Question 43:

  An IT associate has a web application running on multiple servers, configured to scale based on CPU usage. The current configuration has a minimum size of 1 and a maximum size of 5 servers, designed to launch and spread the instances across 3 Availability Zones (AZ). During a low utilization period, an entire AZ went down, and the application experienced downtime. What can the IT associate do to increase the availability of the application?

  A. Increase the minimum to 2

  B. Change to scale based on number of requests

  C. Decrease the AZs to 2

  D. Increase the maximum to 6

  Correct Answer: A

• Question 44:

  An IT associate would find the log files for syslog in which of the following directories?

  A. /var/log

  B. /usr/local/logs

  C. /home/logs

  D. /etc/logs

  Correct Answer: A

• Question 45:

  A server on the network is unreachable. What is the best method to verify connectivity between your computer and the remote server?

  A. lookup

  B. find

  C. ping

  D. netstat

  Correct Answer: C

• Question 46:

  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

  Correct Answer: B

• Question 47:

  What command is used to view new content as it is written to a log file?

  A. cat

  B. grep -f

  C. cut -f1-5

  D. tail -f

  Correct Answer: D

• Question 48:

  What is the Linux kernel?

  A. It is the core interface between a computer's hardware and its processes.

  B. It is another name for the operating system.

  C. It contains all the applications and software installed on the computer.

  D. It is the firmware for the computer's processor.

  Correct Answer: A

• Question 49:

  Which of these providers host repositories of container images?

  A. Docker Hub

  B. GitHub

  C. Container Index

  D. GitLab

  Correct Answer: A

• Question 50:

  Which of the following is a commonly used open source software used to connect to SSL/TLS VPN services?

  A. OpenVPN

  B. GNUVPN

  C. NordVPN

  D. VPNConnect

  Correct Answer: A