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>> New XK0-006 Exam Duration <<
The CompTIA XK0-006 web-based practice exam software can be easily accessed through browsers like Safari, Google Chrome, and Firefox. The customers do not need to download or install excessive software or applications to take the CompTIA Linux+ Certification Exam (XK0-006) web-based practice exam. The XK0-006 web-based practice exam software format can be accessed through any operating system like Windows or Mac.
NEW QUESTION # 75
Which of the following actions is required to establish passwordless SSH authentication?
Answer: A
Explanation:
Copying the public SSH key to the remote server's authorized_keys file is all that's needed to enable passwordless SSH authentication.
NEW QUESTION # 76
Which of the following technologies is used to authenticate users on a Linux server when working in a Windows domain?
Answer: C
Explanation:
Kerberos provides centralized, ticket-based authentication and is the core authentication mechanism used by Windows Active Directory, allowing Linux systems joined to a Windows domain to authenticate users securely.
NEW QUESTION # 77
A small group of remote users needs permission to run some administrative commands on a Linux server. Which of the following approaches is the best way to address this request?
Answer: C
Explanation:
The best approach is to follow least privilege by identifying the specific administrative commands the users need and creating sudo rules that allow only those commands with elevated privileges.
NEW QUESTION # 78
You are a systems administrator and have created an uncompressed backup of the application directory. Several hours later, you must restore the application from backup.
INSTRUCTIONS
Within each tab, click on an object to form the appropriate command used to create the backup and restore the application.
Command objects may only be used once, and not all will be used. Click the arrow to remove any unwanted objects from your command.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Answer:
Explanation:
see the solution in Explanation below.
Explanation:
This performance-based question tests correct use of the tar utility for backup and restore operations, which is part of System Management in CompTIA Linux+ V8. The key detail is that the backup is explicitly described as uncompressed, so the correct archive file must be a plain .tar file rather than .tar.gz, .tgz, or .tar.bz2.
For the backup command, the correct syntax is:
tar -cvf /backups/application.tar -C /opt/ application
Here, -c creates the archive, -v enables verbose output, and -f specifies the archive filename. The -C /opt/ option changes to the /opt/ directory before archiving, and application is then archived relative to that location. This is the correct Linux+ method because it avoids storing unnecessary leading path components in the archive.
For the restore command, the correct syntax is:
tar -xvf /backups/application.tar -C /opt/
Here, -x extracts the archive, -v displays files being restored, and -f identifies the archive file. The -C /opt/ option ensures the archived application directory is restored back into /opt/, recreating /opt/application correctly.
The other file choices such as /backups/application.tar.gz, /backups/application.tgz, and /backups/application.
tar.bz2 are incorrect because they indicate compressed backups, which the question specifically rules out.
Likewise, options such as -xzvf or -xjvf are used for gzip- or bzip2-compressed archives and would not apply here.
Therefore, the verified correct PBQ answers are:
Backup: tar -cvf /backups/application.tar -C /opt/ application
Restore: tar -xvf /backups/application.tar -C /opt/
NEW QUESTION # 79
A systems administrator must provide privileged access to a specific user in a Linux system.
Which of the following commands should the administrator use?
Answer: B
Explanation:
Adding the user to the sudo group grants privileged access by allowing the user to execute commands with elevated permissions through sudo, which is the standard and supported method on Linux systems.
NEW QUESTION # 80
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