(2024) LFCA Dumps and Practice Test (62 Questions) [Q24-Q39]

LFCA Linux Foundation

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(2024) LFCA Dumps and Practice Test (62 Questions)

Guide (New 2024) Actual Linux Foundation LFCA Exam Questions

QUESTION 24
The Linux kernel uses a:

dual architecture
B microkernel architecture

monolithic architecture

hybrid microkernel architecture

QUESTION 25
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?

Increase the minimum to 2

Change to scale based on number of requests

Decrease the AZs to 2

Increase the maximum to 6

QUESTION 26
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?

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

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

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

Use a content delivery network to distribute the streams.

QUESTION 27
Which of the following best describes serverless computing?

A model of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another

A model where a provider manages the back-end infrastructure management tasks, such as provisioning, scaling, scheduling, and patching

An abstraction layer over computer hardware that allows the hardware elements of a single computer-processors, memory, storage, and more-to be divided into multiple segments

A solution comprised of sensors, software, and other technologies for the purpose of connecting and exchanging data with other devices and systems over the internet

QUESTION 28
By default, the Linux operating system uses what access control to manage files/users?

Discretionary Access Control

Mandatory Access Control

Least Privilege

Full Control

QUESTION 29
What software application architecture allows teams to iterate quickly and to develop software applications to scale rapidly?

Serverless architecture

Container architecture

SOA architecture

Micro-service architecture

QUESTION 30
Which option will cause ls to display hidden files and folders?

ls -v

ls -l

ls -a

ls -t

QUESTION 31
What command is used to set or change permission attributes of files (such as read, write, execute)?

chacl

chmod

chown

setattr

QUESTION 32
What command is used to view new content as it is written to a log file?

cat

grep -f

cut -f1-5

tail -f

QUESTION 33
A host seems to be running slowly. What command would help diagnose which processes are using system resources?

free

uptime

lop

QUESTION 34
Which of the following best describes the DevOps methodology of Continuous Delivery?

The focus is on coding, building, integrating, and testing software.

The focus is on automating releases of projects as soon as possible.

The focus is on configuration management and continuous monitoring.

The focus is on product releases but also includes coding, building, integrating and testing software

QUESTION 35
When using vi or vim to edit a file, how do you exit without saving?

:q!

:wq!

:exit

QUESTION 36
Encryption that uses both a private key and public key is known as what?

Key Pair Encryption (symmetric cryptography)

HMAC Cryptography (hash based message authentication]

Public Key Cryptography (asymmetric cryptography)

DPE (dual-phased hybrid encryption]

QUESTION 37
On systemd-based Linux systems, what are runlevels called?

Services

Targets

Units

Modes

QUESTION 38
Which of the following would be the most appropriate use-case for a Function as a Service (FaaS) implementation?

An application that requires a local file system

An application that continuously polls for work to process

An event-driven application with dynamic scaling

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

QUESTION 39
An IT associate is researching technology options to use at a company. The company’s application requires a Linux server, features a small memory footprint, and runs mostly web services and a few back-end applications. Which of the following would allow for the most efficient use of system resources and fast startup speeds?

Containers

Hybrid Cloud

Physical hardware

Virtualization

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Linux Foundation LFCA Exam Syllabus Topics:

Topic	Details
Topic 1	Linux Operating System General Networking Commands System Commands
Topic 2	System Administration Tasks File Management Commands
Topic 3	Software Project Management Open-source Software and Licensing