Which statement about symmetric encryption is correct?
A. The same key is used for encryption and decryption.
B. Symmetric keys are generally longer than asymmetric keys.
C. Asymmetric encryption is generally faster than symmetric encryption.
D. A public key and a private key are needed for symmetric encryption/decryption.
You would like to run command2 only if command1 did not complete successfully. Which command accomplishes this task?
A. command1 ;; command2
B. command1 || command2
C. command1 >> command2
D. command1 andand command2
Which statement about the primary (default) group of a user is correct?
A. The primary group membership of a user is defined in the /etc/group file.
B. The primary group membership of a user is defined in the /etc/shadow file.
C. The primary group membership of a user is defined in the /etc/passwd file.
D. The primary group membership of a user is defined in the /etc/gpasswd file.
Which are benefits of using LVM? (Choose 4.)
A. You can increase data security.
B. You can create extremely large logical volumes.
C. You can add logical volumes in a running system.
D. You can add hard disks to a volume group in a running system.
E. You can reduce the size of a logical volume without unmounting it.
F. The snapshot feature allows consistent backups in a running system.
In the bash shell, which command can be used to create a MY_NAME variable containing the value Joe?
A. MY_NAME=Joe
B. MY_NAME = Joe
C. echo Joe > MY_NAME
D. export MY_NAME = Joe
Which command is suitable for displaying the CPU load as a percentage?
A. w
B. top
C. nice
D. uptime
You want to copy the mytext file from your computer to the /tmp/ directory on the remote computer da20. digitalairlines.com. Which command would you use to accomplish this?
A. ssh mytext da20.digitalairlines.com:/tmp
B. scp da20.digitalairlines.com:/tmp mytext
C. scp mytext da20.digitalairlines.com:/tmp
D. sftp mytext da20.digitalairlines.com:/tmp
You want to know which files are contained in the hugin-0.6.1-2.2.i586.rpm RPM package, which has not yet been installed. Which command will give you this information?
A. rpm -f hugin-0.6.1-2.2.i586.rpm
B. rpm -qpf hugin-0.6.1-2.2.i586.rpm
C. rpm -qpl hugin-0.6.1-2.2.i586.rpm
D. rpm --provides hugin-0.6.1-2.2.i586.rpm
What is the result of the following command? (Choose 2.)
dd if=/dev/zero of=/dev/hdd bs=512 count=1
A. Overwrites an existing partition table
B. Creates a LVM partition of 512 blocks
C. Backs up the /dev/zero and /dev/hdd files
D. Writes zeros in the first 512 bytes of the first hard disk block
E. Assigns the physical volume zero to the logical volume hdd
Which command creates the .depend.boot, .depend.start, and .depend.stop files in /etc/init.d/?
A. init
B. insserv
C. mkinitrd
D. mkreiserfs