LFCS Linux-Foundation Exam Questions and Free Practice Test

Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?

A. dd if=/dev/zero of=/dev/sda bs=512

B. dd if=/dev/zero of=/dev/sdabs=512 count=1

C. dd if=/dev/zero of=/dev/sda bs=440 count=1

D. dd if=/dev/zero of=/dev/sda bs=440

Correct Answer:C

In the vi editor, how can commands such as moving the cursor or copying lines into the buffer be issued multiple times or applied to multiple rows?

A. By using the command :repeat followed by the number and the command.

B. By specifying the number right in front of a command such as 4l or 2yj.

C. By selecting all affected lines using the shift and cursor keys before applying the command.

D. By issuing acommand such as :set repetition=4 which repeats every subsequent command 4 times.

Correct Answer:B

Which of the following commands can be used to locate programs and their corresponding man pages and configuration files?

A. dirname

B. which

C. basename

D. query

E. whereis

Correct Answer:E

Which of the following commands can be used to create a USB storage media from a disk image?

A. gdisk

B. dd

C. cc

D. fdisk

E. mount

Correct Answer:B

What command will generate a list of user names from /etc/passwd along with their login shell?

A. column -s : 1,7 /etc/passwd

B. chop -c 1,7 /etc/passwd

C. colrm 1,7 /etc/passwd

D. cut -d: -f1,7 /etc/passwd

Correct Answer:D

What is the purpose of the Bash built-in export command?

A. It allows disks to be mounted remotely.

B. It runs a command as a process in a subshell.

C. It makes the command history available to subshells.

D. It sets up environment variables for applications.

E. It shares NFS partitions for use by other systems on the network.

Correct Answer:D

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