Linux Foundation Linux Foundation Certifications LFCS Questions & Answers

• Question 91:

  Which of the following commands can be used to determine how long the system has been running? (Choose TWO correct answers.)

  A. uptime

  B. up

  C. top

  D. uname -u

  E. time -up

  Correct Answer: AC

• Question 92:

  What is the output of the following command?

  for token in a b c; do

  echo -n ${token};

  done

  A. anbncn

  B. abc

  C. $token$token$token

  D. {a}{b}{c}

  E. a b c

  Correct Answer: B

• Question 93:

  What is the correct command to extract the contents of the archive file download.bz2?

  A. unpack download.bz2

  B. unzip2 download.bz2

  C. bunzip2 download.bz2

  D. unzip download.bz2

  E. uncompress download.bz2

  Correct Answer: C

• Question 94:

  Which of the following tools used for DNS debugging, reports not only the response from the name server but also details about the query?

  A. dnsq

  B. dig

  C. hostname

  D. dnslookup

  E. zoneinfo

  Correct Answer: B

• Question 95:

  Which umask value will result in the default access permissions of 600 (rw-------) for files and 700 (rwx------) for directories? (Specify only the numerical umask value.)

  A. 0077, 077

  Correct Answer: A

• Question 96:

  Which configuration file would be edited to change the default options for outbound SSH sessions?

  A. /etc/ssh/sshd_config

  B. /etc/ssh/ssh

  C. /etc/ssh/client

  D. /etc/ssh/ssh_config

  E. /etc/ssh/ssh_client

  Correct Answer: D

• Question 97:

  Which of the following commands changes the ownership of file.txt to the user dan and the group staff?

  A. chown dan/staff file.txt

  B. chown dan:staff file.txt

  C. chown -u dan -g staff file.txt

  D. chown dan -g staff file.txt

  Correct Answer: B

• Question 98:

  Which command will disable swapping on a device? (Specify ONLY the command without any path or parameters.)

  A. swapoff, /sbin/swapoff

  Correct Answer: A

• Question 99:

  Which world-writable directory should be placed on a separate partition inorder to prevent users from being able to fill up the / filesystem? (Specify the full path to the directory.)

  A. /tmp, tmp, /var/tmp, /tmp/, /var/tmp/

  Correct Answer: A

• Question 100:

  Which file lists which users can execute commands using sudo? (Specify the full name of the file, including path.)

  A. /etc/sudoers

  Correct Answer: A