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Q33. - (Topic 1)
How can the existing environment variable FOOBAR be suppressed for the execution of the script./myscript only?
A. unset -v FOOBAR;./myscript
B. set -a FOOBAR="";./myscript
C. env -u FOOBAR./myscript
D. env -i FOOBAR./myscript
Answer: C
Q34. - (Topic 1)
After issuing:
function myfunction { echo $1 $2 ; }
in Bash, which output does:
myfunction A B C
Produce?
A. A B
B. A B C
C. A C
D. B C
E. C B A
Answer: A
Q35. - (Topic 5)
What is true regarding a default route?
A. The default route is always used first. When the default route is not available more specific routes are tried.
B. When a default route is set, all other routes are disabled until the default route is deleted.
C. The default route is only used if there is not a more specific route to a destination host or network.
D. Without a default route, no network communication even in directly attached networks is possible.
Answer: C
Q36. - (Topic 3)
Which command can be used to delete a group from a Linux system?
A. groupdel
B. groupmod
C. groups
D. groupedit
Answer: A
Q37. - (Topic 3)
Which of the following steps prevents a user from obtaining an interactive login session?
A. Run the command chsh -s /bin/false with the user name.
B. Set the UID for the user to 0.
C. Remove the user from the group staff.
D. Add the user to /etc/noaccess.
E. Create a .nologin file in the user's home directory.
Answer: A
Q38. - (Topic 2)
What is the purpose of a screen reader?
A. It reads text displayed on the screen to blind or visually impaired people.
B. It reads the parameters of the attached monitors and creates an appropriate X11 configuration.
C. It displays lines and markers to help people use speed reading techniques.
D. It manages and displays files that contain e-books.
Answer: A
Q39. CORRECT TEXT - (Topic 6)
Which file lists which users can execute commands using sudo? (Specify the full name of the file, including path.)
Answer: /etc/sudoers
Q40. - (Topic 5)
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.
Answer: A