050-733 Online Practice Questions and Answers

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 want to add user tux to the southpole group without changing his primary group membership. Which command do you use for this purpose?

A. useradd -g southpole tux

B. usermod -g southpole tux

C. groupadd -A tux southpole

D. groupmod -A tux southpole

You have a text file that contains empty lines. Using grep and regular expressions, which command displays the file without the empty lines?

A. grep ^$ file

B. grep [\ ] file

C. grep -v ^$ file

D. grep -v #$ file

Which statement regarding symbolic links is true? (Choose 2.)

A. A symbolic link can point to a file on a different file system.

B. A symbolic link and the file it points to share the same inode.

C. If you delete the symbolic link, the original file is deleted as well.

D. If you delete the original file, the symbolic link points to a non-existing file.

E. With a symbolic link, you cannot see directly that it is a link.

How large is an inode?

A. 256 bits

B. 64 Kbytes

C. 128 bytes

D. 1 Mbyte

Which command is suitable for displaying the CPU load as a percentage?

A. w

B. top

C. nice

D. uptime

You want to disable the network device eth0. Which command can you use?

A. ifconfig halt eth0

B. ipconfig eth0 halt

C. ip link set eth0 down

D. ip param set eth0 halt

In which file are global configurations for users who use bash as their login shell set?

A. /etc/bashrc

B. /etc/bash.cf

C. /etc/bash.conf

D. /etc/bash.bashrc

How do you activate an ACL when mounting a file system manually?

A. mount --acl /dev/hda5 /data

B. mount -f acl /dev/hda5 /data

C. mount -o acl /dev/hda5 /data

D. mount --use-acl /dev/hda5 /data

Which command shows you the default shell of a user?

A. w user

B. id user

C. who user

D. finger user

What does the following command do? tar -tzvf /tmp/backup.tgz etc/HOSTNAME

A. It extracts the etc/HOSTNAME file from the /tmp/backup.tgz archive.

B. It includes the etc/HOSTNAME file in the /tmp/backup.tgz archive.

C. It produces an error message because the options are in the wrong sequence.

D. It displays a line similar to the following, but otherwise does nothing: -rw-r--r-- root/root 23 2005- 03-11

14:20 etc/HOSTNAME

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

You have a /tmp/data directory containing the files .file, file1, and file2. You want to copy the file1 and file2 files only to the /data-old directory that already exists. In a terminal window, which command acomplishes this?

A. cp /tmp/data /data-old

B. cp /tmp/data/. /data-old

C. cp /tmp/data/* /data-old

D. cp /tmp/data/? /data-old

To which process does the process ID 1 always belong?

A. init

B. boot

C. cron

D. X server

E. kernel (vmlinuz)

Which statements about the LVM components are correct? (Choose 2.)

A. A volume group is part of a logical volume.

B. Logical volumes are grouped in a master group.

C. A volume group always consists of one physical volume.

D. A physical volume can be a partition or an entire hard disk.

E. A volume group can be reduced in size by removing physical volumes.

F. The operating system accesses the volume groups like conventional physical partitions.