An administrator is troubleshooting an application that has failed to start after the server was rebooted.
Noticing the data volume is not mounted, the administrator attempts to mount it and receives this error:

Upon checking the logical volume status, the administrator receives this information:

Which of the following can be said about the data logical volume, and how can this problem be resolved?

• A.The logical volume file system has become corrupted. The administrator should repair it with xfs_repair/dev/datavg/datalv and then mount it.
• B.The file system is read-only. The administrator should remount it as read-write with the command mount - o remount.rw /data.
• C.The logical volume is not active. The administrator should make it active with lvchange -ay /dev/ datavg/datalv and then mount it.
• D.The logical volume is OK but the /dev special files are missing. The administrator should recreate them by running /dev/MAKEDEV.

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A junior Linux administrator is setting up system-wide configuration settings. The goal is to ensure the PATH environment variable includes the following locations for all users who log into a Linux system.

The administrator issues the following commands at the terminal:

Respectively, the output of these commands is as follows:

Given this output, which of the following would be the BEST action for the administrator to perform to address this issue?

• A.Update the /etc/profile file using a text editor navigate to the PATH element, add the missing locations, and restart the bash process to update the changes.
• B.Update the /etc/profile.d file using a text editor, navigate to the PATH element add the missing locations, and run the bash_completion.sh script to update the changes.
• C.Update the /etc/profile file using a text editor, navigate to the PATH element, add the missing locations and run the . /etc/profile command to update the changes.
• D.Update the /etc/profile.d file using a text editor, navigate to the PATH element, add the missing locations, and reboot to update the changes.

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When requesting SSH access to a remote system, a user accidentally emailed the id_rsa key to the
administrator. Which of the following should the user do NEXT?

• A.Stop using that key and run ssh-keygen to generate a new key pair.
• B.Run the ssh-add command to add the remote system to known_hosts.
• C.Ask the administrator to run chmod 600 id_rsa on the remote system.
• D.Delete id_rsa key file and send the id_rsa.pub key file instead.

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A systems administrator installs a simple package, but the Linux system returns the following error: rpmdb open fails. To verify if there is a problem in the RPM database, the systems administrator runs the following command:

Which of the following commands should the systems administrator run NEXT to resolve this issue?

• A.cd/var/lib/rpm; rpm --rebuilddb ; rm -f _db*; yum clean all
• B.cd/var/lib/rpm; rpm -qd; rpm --rebuilddb; yum clean all
• C.cd/var/lib/rpm; rm -f _db*; rpm --rebuilddb; yum clean all
• D.cd/var/lib/rpm; rpm -qa; rm -f _db*; yum clean all

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A Linux administrator needs to set permissions on an application with the following parameters:
* The owner of the application should be able to read, write, and execute the application.
* Members of the group should be able to read and execute the application.
* Everyone else should not have access to the application.
Which of the following commands would BEST accomplish these tasks?

• A.chmod 750 <application name>
• B.chmod 760 <application name>
• C.chmod 730 <application name>
• D.chmod 710 <application name>

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