Question 1

What is a purpose of an SSH host key?

Options :

A : It must be sent by any SSH client in addition to a user key in order to identify the client-s host.

B : It provides the server-s identity information to connecting SSH clients.

C : It is the root key by which all user SSH keys must be signed.

D : It authenticates any user that logs into a remote machine from the key-s host.

E : It is used by system services like cron, syslog or a backup job to automatically connect to remote hosts.

Answer: B

Question 2

What is true regarding the command userdel --force --remove bob? (Choose TWO correct answers.)

Options :

A : The user bob is removed from the system-s user database.

B : The user bob-s home directory is removed.

C : The locate database is updated to drop files owned by bob.

D : All files owned by bob are remove from all mounted filesystems.

E : In case bob was the last member of a group, that group is deleted.

Answer: A,B

Question 3

In case neither cron.allow nor cron.deny exist in /etc/, which of the following is true?

Options :

A : Without additional configuration, no users may have user specific crontabs.

B : Without additional configuration, all users may have user specific crontabs.

C : The cron daemon will refuse to start and report missing files in the system-s logfile.

D : When a user creates a user specific crontab the system administrator must approve it explicitly.

Answer: B

Question 4

What is the purpose of the iconv command?

Options :

A : It converts bitmap images from one format to another such as PNG to JPEG.

B : It verifies that the root directory tree complies to all conventions from the Filesystem HierarchyStandard (FHS).

C : It displays additional meta information from icon files ending in .ico.

D : It changes the mode of an inode in the ext4 file system.

E : It converts files from one character encoding to another.

Answer: E

Question 5

Which environment variable is used by an X11 client to determine the X Server to connect to? (Specify ONLY the variable name without any preceding commands or values.)

Options :

A : Display

Answer: A

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