Linux Foundation Linux Foundation Certifications LFCS Questions & Answers

• Question 71:

  What is true regarding TCP port 23?

  A. Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.

  B. Port 23 is the well known port for the SSH service which provides secure logins.

  C. Port 23 is the well known port for the rlogin service which is SSL secured by default.

  D. Port 23 is the well known port for the system login services which are encrypted when the user runs the starttls command in his login shell.

  Correct Answer: A

• Question 72:

  Which of the followingcommand sets the Bash variable named TEST with the content FOO?

  A. set TEST="FOO"

  B. TEST = "FOO"

  C. var TEST="FOO"

  D. TEST="FOO"

  Correct Answer: D

• Question 73:

  After adding a new email alias to the configuration, which command must be run in order to ensure the MTA knows about it? (Specify the command without any path but including all required parameters.)

  A. newaliases, sendmail -bi

  Correct Answer: A

• Question 74:

  Which of the following commands creates an ext3 filesystem on /dev/sdb1? (Choose TWO correct answers.)

  A. /sbin/mke2fs -j /dev/sdb1

  B. /sbin/mkfs -t ext3 /dev/sdb1

  C. /sbin/mkfs -c ext3 /dev/sdb1

  D. /sbin/mke3fs -j/dev/sdb1

  Correct Answer: AB

• Question 75:

  Which run levels should never be declared as the default run level when using SysV init? (Choose TWO correct answers.)

  A. 0

  B. 1

  C. 3

  D. 5

  E. 6

  Correct Answer: AE

• Question 76:

  Which RPM command will output the name of the package which supplied the file /etc/exports?

  A. rpm -F /etc/exports

  B. rpm -qf /etc/exports

  C. rpm -Kl /etc/exports

  D. rpm -qp /etc/exports

  E. rpm -qi /etc/exports

  Correct Answer: B

• Question 77:

  Please specify the top directory containing the configuration files for the CUPS printing system. (Specify the full path to the directory.)

  A. /etc/cups, /etc/cups/

  Correct Answer: A

• Question 78:

  What output will the command seq 10 produce?

  A. A continuous stream of numbers increasing in increments of 10 until stopped.

  B. The numbers 1 through 10 with one number per line.

  C. The numbers 0 through 9 with one number per line.

  D. The number 10 to standard output.

  Correct Answer: B

• Question 79:

  What command displays all aliases defined in the current shell? (Specify the command without any path information)

  A. alias, alias -p

  Correct Answer: A

• Question 80:

  Which command will display the last line of the file foo.txt?

  A. head -n 1 foo.txt

  B. tail foo.txt

  C. last -n 1 foo.txt

  D. tail -n 1 foo.txt

  Correct Answer: D