Linux Foundation LFCS Exam Questions Instant Access

Question 1

Which of the following commands can be used to download the RPM package kernel without installing it?

Ayum download --no-install kernel

Byumdownloader kernel

Crpm --download --package kernel

Drpmdownload kernel

Answer : B

Question 2

Which of the following commands will send output from the program myapp to both standard output (stdout) and the file file1.log?

Acat < myapp | cat > file1.log

Bmyapp 0>&1 | cat > file1.log

Cmyapp | cat > file1.log

Dmyapp | tee file1.log

Etee myapp file1.log

Answer : D

Question 3

How can the existing environment variable FOOBAR be suppressed for the execution of the script./myscript only?

Aunset -v FOOBAR;./myscript

Bset -a FOOBAR='';./myscript

Cenv -u FOOBAR./myscript

Denv -i FOOBAR./myscript

Answer : C

Question 4

Which of the following commands kills the process with the PID 123 but allows the process to "clean up" before exiting?

Akill -PIPE 123

Bkill -KILL 123

Ckill -STOP 123

Dkill -TERM 123

Answer : D

Question 5

When the command echo $ outputs 1, which of the following statements is true?

AIt is the process ID of the echo command.

BIt is the process ID of the current shell.

CIt is the exit value of the command executed immediately before echo.

DIt is the exit value of the echo command.

Answer : C

Question 6

Which of the following commands changes the ownership of file.txt to the user dan and the group staff?

Achown dan/staff file.txt

Bchown dan:staff file.txt

Cchown -u dan -g staff file.txt

Dchown dan -g staff file.txt

Answer : B

Question 7

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.)

See Below Explanation:

Answer : A

Linux Foundation CERTIFIED SYSTEM ADMINISTRATOR LFCS Exam Questions