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Linux Foundation LFCS - Linux Foundation Certified System Administrator

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Page: 4 / 8
Total 260 questions

How is a display manager started?

A.

It is started by a user using the command startx.

B.

It is started like any other system service by the init system.

C.

It is started by inetd when a remote hosts connects to the X11 port.

D.

It is started automatically when a X11 user logs in to the system console.

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

What word is missing from the following SQL statement?

__________ count(*) from tablename;

(Please specify the missing word using lower-case letters only.)

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.

Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writes the result to the file newletter?

A.

sed '/bob/Bob' letter >newletter

B.

sed s/bob/Bob/ letter < newletter

C.

sed 's/bob/Bob' letter > newletter

D.

sed 's/bob/Bob/g' letter > newletter

E.

sed 's/bob, Bob/' letter > newletter

Which of the following commands prints a listof 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

Which option in the /etc/ntp.conf file specifies an external NTP source to be queried for time information? (Specify ONLY the option without any values or parameters.)

What is true about the file /etc/localtime?

A.

It is a plain text file containing a string such as Europe/Berlin.

B.

It is created and maintained by the NTP service based on the geolocation of the system's IP address.

C.

It is a symlink to /sys/device/clock/ltime and always contains the current local time.

D.

It is either a symlink to or a copy of a timezone information file such as /usr/share/zoneinfo/Europe/Berlin.

Which option to the yum command will update the entiresystem? (Specify ONLY the option name without any additional parameters.)

Which port is the default server port for the HTTPS protocol? (Specify the port number using digits.)