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The CompTIA Linux+ Certification Exam certification is ideal for IT professionals who work with Linux systems in their daily operations. This includes system administrators, network administrators, cybersecurity professionals, and other IT professionals who are responsible for managing Linux systems. The CompTIA Linux+ certification is recognized globally by technology companies and government agencies, making it a valuable certification to have for professionals seeking career advancement opportunities. Additionally, the certification is vendor-neutral, which means that it is not tied to any specific Linux distribution or technology provider.

CompTIA Linux+ Certification Exam Sample Questions (Q208-Q213):

NEW QUESTION # 208
Based on an organization's new cybersecurity policies, an administrator has been instructed to ensure that, by default, all new users and groups that are created fall within the specified values below.

To which of the following configuration files will the required changes need to be made?

A. /etc/security/limits.conf
B. /etc/login.defs
C. /etc/default/useradd
D. /etc/profile

Answer: B

Explanation:
Explanation
The required changes need to be made to the /etc/login.defs configuration file. The /etc/login.defs file defines the default values for user and group IDs, passwords, shells, and other parameters for user and group creation.
The file contains the directives UID_MIN, UID_MAX, GID_MIN, and GID_MAX, which set the minimum and maximum values for automatic user and group ID selection. The administrator can edit this file and change the values to match the organization's new cybersecurity policies. This is the correct file to modify to accomplish the task. The other options are incorrect because they either do not affect the user and group IDs (/etc/security/limits.conf or /etc/profile) or do not set the default values (/etc/default/useradd). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 15:
Managing Users and Groups, page 463.

NEW QUESTION # 209
Several users reported that they were unable to write data to the /oracle1 directory. The following output has been provided:

Which of the following commands should the administrator use to diagnose the issue?

A. lsblk /dev/sdb1
B. du -sh /oracle1
C. fdisk -1 /dev/sdb1
D. df -i /oracle1

Answer: D

Explanation:
Explanation
The administrator should use the command df -i /oracle1 to diagnose the issue of users being unable to write data to the /oracle1 directory. This command will show the inode usage of the /oracle1 filesystem, which indicates how many files and directories can be created on it. If the inode usage is 100%, it means that no more files or directories can be added, even if there is still free space on the disk. The administrator can then delete some unnecessary files or directories, or increase the inode limit of the filesystem, to resolve the issue.
The other options are not correct commands for diagnosing this issue. The fdisk -l /dev/sdb1 command will show the partition table of /dev/sdb1, which is not relevant to the inode usage. The lsblk /dev/sdb1 command will show information about /dev/sdb1 as a block device, such as its size, mount point, and type, but not its inode usage. The du -sh /oracle1 command will show the disk usage of /oracle1 in human-readable format, but not its inode usage. References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 7:
Managing Disk Storage; How to Check Inode Usage in Linux - Fedingo

NEW QUESTION # 210
A Linux administrator needs to connect securely to a remote server in order to install application software.
Which of the following commands would allow this connection?

A. sftp rooteiO.0.0.1
B. scp "ABC-key.pem" root@10.0.0.1
C. telnet 10.0.0.1 80
D. ssh -i "ABC-key.pem" root@10.0.0.1
E. sftp "ABC-key.pem" root@10.0.0.1

Answer: D

Explanation:
Explanation
The command ssh -i "ABC-key.pem" root@10.0.0.1 would allow the administrator to connect securely to the remote server in order to install application software. The ssh command is a tool for establishing secure and encrypted connections between remote systems. The -i option specifies the identity file that contains the private key for key-based authentication. The "ABC-key.pem" is the name of the identity file that contains the private key. The root@10.0.0.1 is the username and the IP address of the remote server. The command ssh -i
"ABC-key.pem" root@10.0.0.1 will connect to the remote server using the private key and allow the administrator to install application software. This is the correct command to use to connect securely to the remote server. The other options are incorrect because they either do not use key-based authentication (sftp root@10.0.0.1 or telnet 10.0.0.1 80) or do not use the correct syntax for the command (scp "ABC-key.pem" root@10.0.0.1 instead of scp -i "ABC-key.pem" root@10.0.0.1 or sftp "ABC-key.pem" root@10.0.0.1 instead of sftp -i "ABC-key.pem" root@10.0.0.1). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 17: Implementing Basic Security, page 513.

NEW QUESTION # 211
The security team has identified a web service that is running with elevated privileges.
A Linux administrator is working to change the systemd service file to meet security compliance standards.
Given the following output:

Which of the following remediation steps will prevent the web service from running as a privileged user?

A. Adding the User-webservice to the [Service] section of the service file
B. Updating the Environment File line in the [Service] section to/home/webservice/config
C. Changing the:nulti-user.target in the [Install] section to basic.target
D. Removing the ExecStarWusr/sbin/webserver -D SOPTIONS from the service file

Answer: D

Explanation:
The remediation step that will prevent the web service from running as a privileged user is adding the User=webservice to the [Service] section of the service file. The service file is a configuration file that defines the properties and behavior of a systemd service. The systemd is a system and service manager that controls the startup and operation of Linux systems. The service file contains various sections and options that specify how the service should be started, stopped, and managed. The [Service] section defines how the service should be executed and what commands should be run. The User option specifies the user name or ID that the service should run as. The webservice is the name of the user that the administrator wants to run the web service as. The administrator should add the User=webservice to the [Service] section of the service file, which will prevent the web service from running as a privileged user, such as root, and improve the security of the system. This is the correct remediation step to use to prevent the web service from running as a privileged user. The other options are incorrect because they either do not change the user that the service runs as (removing the ExecStart=/usr/sbin/webserver -D OPTIONS from the service file or updating the EnvironmentFile line in the [Service] section to /home/webservice/config) or do not affect the user that the service runs as (changing the multi-user.target in the [Install] section to basic.target).

NEW QUESTION # 212
A systems administrator has been unable to terminate a process. Which of the following should the administrator use to forcibly stop the process?

A. kill -1
B. kill -TERM
C. kill -9
D. kill -HUP
E. kill -15

Answer: D

NEW QUESTION # 213
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