A Linux server hosts Kerberos and LDAP, which of the following is the MOST likely role of this server?

• A.Database
• B.Clustering
• C.Authentication
• D.Certificate authority

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Given the output below:

Which of the following commands can be used to remove MyPhoto.jpg from the current directory?

• A.rm -f MyPhoto.jpg
• B.rm -rf ./Pictures
• C.ln -rm ./Pictures/photo.jpg
• D.unlink ./MyPhoto.jpg
• E.del Pictures/photo.jpg

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A Linux administrator needs to back up files from a user's home directory to a remote server. The administrator copied the files last week but must ensure any files created or modified since then are added.
Which of the following is the BEST command for the administrator to use?

• A.scp -r /home/user99/* [email protected]:/backups/user99/
• B.rsync -r /home/user99 [email protected]:/backups
• C.cp -rf /home/user99/* /mnt/backups/user99/
• D.sftp -b /home/user99/* [email protected]:/backups

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Find the file named core and remove it from the system.
INSTRUCTIONS
Type "help" to display a list of available commands.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

• A.See below.
  Solution as
  
• B.See below.
  Solution as
  

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A user requested a USB serial device to be added to a desktop computer. The device has built-in kernel driver support. The administrator tested the device installation and access, but the user cannot access the serial port.
Each time the user attempts to access the device, an error log is created that shows the user does not have permission to use the serial port. Which of the following will add a user to the group that has serial port capabilities?

• A.usermod -a -G serialport $USER
• B.usermod -a -G dialout $USER
• C.usermod -a -G modem $USER
• D.usermod -a -G root $USER

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