Linux Foundation LFCS Exam Practice Test Instant Access

Question 1

The output of the program date should be saved in the variable actdat. What is the correct statement?

Aactdat=`date`

Bset actdat='date'

Cdate | actdat

Ddate > $actdat

Eactdat=date

Answer : A

Question 2

Which of the following commands will output all of the lines with the name Fred in upper or lower case but not the word red from the file data_file? (Choose two)

Agrep -v fred data_file

Bgrep '[f]red' data_file

Cegrep fred data_file

Dgrep '[Ff]red' data_file

Egrep -i fred data_file

Answer : D, E

Question 3

What does the exit status 0 indicate about a process?

AThe process ended without any problems.

BThe process was terminated by the user.

CThe process couldn't finish correctly.

DThe process waited for an input but got none.

EThe process finished in time.

Answer : A

Question 4

Which of the following commands redirects the output of cmd to the file foo.txt, in which an existing file is overwritten?

Acmd || foo.txt

Bcmd | foo.txt

Ccmd && foo.txt

Dcmd >> foo.txt

Ecmd > foo.txt

Answer : E

Question 5

Which configuration file would be edited to change default options for the OpenSSH server?

A/etc/ssh/sshd_config

B/etc/ssh/ssh

C/etc/ssh/server

D/etc/ssh/ssh_config

E/etc/ssh/ssh_server

Answer : A

Question 6

What is the lowest numbered unprivileged TCP port? (Specify the number in digits only.)

See Below Explanation:

Answer : A

Question 7

How many IP-addresses can be used for unique hosts inside the IPv4 subnet 192.168.2.128/28? (Specify the number only without any additional information.)

See Below Explanation:

Answer : A

Linux Foundation CERTIFIED SYSTEM ADMINISTRATOR Exam Practice Test