Linux Foundation Linux Foundation Certifications LFCS Questions & Answers

• Question 81:

  What is the output of the following command sequence?

  for token in a b c; do

  echo -n "$token ";

  done

  A. anbncn

  B. a b c

  C. "a " "b " "c "

  D. token token token

  E. abc

  Correct Answer: B

• Question 82:

  Which of the following commands redirects the output of cmd to the file foo.txt, in which an existing file is overwritten?

  A. cmd || foo.txt

  B. cmd | foo.txt

  C. cmd andand foo.txt

  D. cmd >> foo.txt

  E. cmd > foo.txt

  Correct Answer: E

• Question 83:

  What is the output of the following command?

  echo "Hello World" | tr -d aieou

  A. Hello World

  B. eoo

  C. Hll Wrld

  D. eoo Hll Wrld

  Correct Answer: C

• Question 84:

  Which of the following programs can be used to determine the routing path to a given destination?

  A. dig

  B. netstat

  C. ping

  D. route

  E. traceroute

  Correct Answer: E

• Question 85:

  The script, script.sh, consists of the following lines:

  #!/bin/bash

  echo $2 $1

  Which output will appear if the command, ./script.sh test1 test2, is entered?

  A. test1 test2

  B. test2 test1

  C. script.sh test2

  D. script.sh test1

  E. test1 script.sh

  Correct Answer: B

• Question 86:

  In which file, if present, must all users be listed that are allowed to use the cron scheduling system? (Specify the full name of the file, including path.)

  A. /etc/cron.allow

  Correct Answer: A

• Question 87:

  What is the default name of the configuration file for the Xorg X11 server? (Specify the file name only without any path.)

  A. xorg.conf

  Correct Answer: A

• Question 88:

  Which of the following find commands will print out a list of files owned by root and with the SUID bit set in /usr?

  A. find /usr -uid 0 -perm +4000

  B. find -user root +mode +s /usr

  C. find -type suid -username root -d /usr

  D. find /usr -ls \*s\* -u root

  E. find /usr -suid -perm +4000

  Correct Answer: A

• Question 89:

  Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?

  A. /etc/keys

  B. /proc/keys

  C. /etc/inittab

  D. /proc/inittab

  E. /etc/reboot

  Correct Answer: C

• Question 90:

  What is the default nice level when a process is started using the nice command?

  A. -10

  B. 10

  C. 20

  D. 0

  Correct Answer: B