CompTIA CompTIA Certifications LX0-103 Questions & Answers

• Question 41:

  Which of the following are valid stream redirection operators within Bash? (Choose THREE correct answers.)

  A. <

  B. <<<

  C. >

  D. >>>

  E. %>

  Correct Answer: ABC

• Question 42:

  After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem. Which of the following describes the resulting situation?

  A. foo and bar would both be removed.

  B. foo would be removed while bar would remain accessible.

  C. foo would be removed. bar would still exist but would be unusable.

  D. Both foo and bar would remain accessible.

  E. The user is prompted whether bar should be removed, too.

  Correct Answer: B

• Question 43:

  After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoid reconfiguration of existing applications? (Choose TWO correct answers.)

  A. By creating an ACL redirection from the old to the new path of the data.

  B. By creating a hard link from the old to the new path of the data.

  C. By creating a symbolic link from the old to the new path of the data.

  D. By running the command touch on the old path.

  E. By mounting the new filesystem on the original path of the data.

  Correct Answer: CE

• Question 44:

  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 45:

  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 46:

  When given the following command line. echo "foo bar" | tee bar | cat

  Which of the following output is created?

  A. cat

  B. foo bar

  C. tee bar

  D. bar

  E. foo

  Correct Answer: B

• Question 47:

  Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?

  A. fmt -f 1,4 /etc/passwd

  B. split -c 1,4 /etc/passwd

  C. cut -d : -f 1,4 /etc/passwd

  D. paste -f 1,4 /etc/passwd

  Correct Answer: C

• Question 48:

  Which of the following signals is sent to a process when the key combination CTRL+C is pressed on the keyboard?

  A. SIGTERM

  B. SIGINT

  C. SIGSTOP

  D. SIGKILL

  Correct Answer: B

• Question 49:

  What happens after issuing the command vi without any additional parameters?

  A. vi starts and loads the last file used and moves the cursor to the position where vi was when it last exited.

  B. vi starts and requires the user to explicitly either create a new or load an existing file.

  C. vi exits with an error message as it cannot be invoked without a file name to operate on.

  D. vi starts in command mode and opens a new empty file.

  E. vi starts and opens a new file which is filled with the content of the vi buffer if the buffer contains text.

  Correct Answer: D

• Question 50:

  Which of the following command 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