CompTIA XK0-006

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CompTIA XK0-006 Exam Syllabus Topics:

Reference: https://www.comptia.org/en-us/certifications/linux/v8/#overview

CompTIA Linux+ Certification Sample Questions:

Question #1
A systems administrator is working on an SFTP server configuration. Which of the following commands will best enable the connectivity to that service from the 10.10.0.0/24 network?

A. sudo ufw allow from 10.10.0.0/24 to any port 22
B. sudo ufw allow from 10.10.0.0/24
C. sudo ufw allow 0:22/tcp from 10.10.0.0
D. sudo ufw allow in on eth0 to any port 22

Question #2
Which of the following Ansible components is used to define groups and individual hosts and can include variables specific to each host or group?

A. Modules
B. Inventory
C. Playbooks
D. Handlers

Question #3
Users connecting to a MySQL database on a Linux system report frequent errors. An administrator reviews the following partial output of the /proc/meminfo and freecommands:

Which of the following should the administrator do to ensure that the MySQL service will continue to run even if the system runs out of swap space? (Choose two.)

A. Issue the sysctl -w vm.overconunit_memory=2 command.(Invalid key)
B. Use disk quotas on the swap space to prevent MySQL from overutilizing the swap partition.
C. Issue the sysctl -w vm.overcommit_ratio=100 command.
D. Reload the /etc/fstab file by issuing the mount -a command.(Not sufficient alone)
E. Issue the mkswap /dev/sda2; swapon -v /dev/sda2 command.
F. Issue the dd if=/dev/zero of=/swapfile bs=1024 count=65536 command.

Question #4
An administrator must secure an account for a user who is going on extended leave. Which of the following steps should the administrator take? (Choose two).

A. Delete the user's /homefolder.
B. Set the user's files to immutable.
C. Change the user's shell to /sbin/nologin.
D. Run the command passwd -l user.
E. Change the date on the /homefolder to that of the expected return date.
F. Instruct the user to log in once per week.

Question #5
Which of the following describes how a user's public key is used during SSH authentication?

A. The user's public key is verified against a list of authorized keys. If it is found, the user is allowed to log in.
B. The user's public key is used to encrypt the communication between the client and the server.
C. The user's public key is used to hash the password during SSH authentication.
D. The user's public key is used instead of a password to allow server access.

Solutions: