Linux Foundation Linux Foundation Certifications LFCS Questions & Answers

• Question 221:

  What is the name of the main configuration file for GNU GRUB? (Specify the file name only without any path.)

  A. menu.lst, grub.conf, grub.cfg

  Correct Answer: A

• Question 222:

  In Bash, inserting 1>and2 after a command redirects

  A. standard error to standard input.

  B. standard input to standard error.

  C. standard output to standard error.

  D. standard error to standardoutput.

  E. standard output to standard input.

  Correct Answer: C

• Question 223:

  What is the maximum niceness value that a regular user can assign to a process with the nice command when executinga new process?

  A. 9

  B. 19

  C. 49

  D. 99

  Correct Answer: B

• Question 224:

  When running the command

  sed -e "s/a/b/" /tmp/file >/tmp/file

  While /tmp/file contains data, why is /tmp/file empty afterwards?

  A. The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.

  B. The command sed did not match anything in that file therefore the output is empty.

  C. When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens it for reading.

  D. Redirection for shell commands do not work using the > character. It only works using the | character instead.

  Correct Answer: C

• Question 225:

  Which of the following is the device file name for the second partition on the only SCSI drive?

  A. /dev/hda1

  B. /dev/sda2

  C. /dev/sd0a2

  D. /dev/sd1p2

  Correct Answer: B

• Question 226:

  Which command is used to create and initialize the files used to store quota information? (Specify ONLY the commandwithout any path or parameters.)

  A. quotacheck

  Correct Answer: A

• Question 227:

  Which command chain will count the number of regular files with the name of foo.txt within /home?

  A. ls -lR /home | grep foo.txt | wc -l

  B. find /home -type f -name foo.txt | wc -l

  C. find /home -name foo.txt -count

  D. find /home -name foo.txt | wc -l

  E. grep -R foo.txt /home | wc -l

  Correct Answer: B

• Question 228:

  After modifying GNU GRUB's configuration file, which command must be run for the changes to take effect?

  A. kill -HUP $(pidof grub)

  B. grub-install

  C. grub

  D. No action is required

  Correct Answer: D

• Question 229:

  Which grep command will print only the lines that do not end with a / in the file foo?

  A. grep '/$' foo

  B. grep '/#' foo

  C. grep -v '/$' foo

  D. grep -v '/#' foo

  Correct Answer: C

• Question 230:

  Each entry in a crontab must end with what character?

  A. Tab

  B. Space

  C. Backslash

  D. Newline

  Correct Answer: D