;inux

Question 1

What is true about links in a Linux file system?

Answer 1

A symbolic link can point to a file on another file system.

Question 2

Which files are the source of the information in the following output? (Choose two.)
uid=1000 (bob) gid=1000 (bob) groups=1000 (bob), 10 (wheel), 150 (wireshark), 989 (docker),
1001 (libvirt)

Answer 2

/etc/passwd
/etc/group

Question 3

Which of the following tasks can the command passwd accomplish? (Choose two.)

Answer 3

Create a new user account.
Lock a user account.

Question 4

What is true about the su command?

Answer 4

It runs a shell or command as another user.

Question 5

What parameter of ls prints a recursive listing of a directory’s content? (Specify ONLY the option
name without any values or parameters.)

Answer 5

ls -R

Question 6

Most commands on Linux can display information on their usage. How can this information
typically be displayed?

Answer 6

By running the command with the option -m or –manpage.

Question 7

Which of the following commands shows the absolute path to the current working directory?

Answer 7

pwd

Question 8

Which of the following commands output the content of the file Texts 2.txt? (Choose two.)

Answer 8

cat ‘Texts 2.txt’
cat ‘Texts 2.txt’

Question 9

Which command displays file names only and no additional information?

Answer 9

ls -a

Question 10

What is the purpose of the PATH environment variable?

Answer 10

It allows the execution of commands without the need to know the location of the executable.

Question 11

Which of the following commands sets the variable USERNAME to the value bob?

Answer 11

USERNAME=bob

Question 12

What command displays manual pages? (Specify ONLY the command without any path or
parameters.)

Answer 12

man

Question 13

Which command copies the contents of the directory /etc/, including all sub-directories, to /root/?

Answer 13

cp -r /etc/* /root

Question 14

Which of the following commands puts the lines of the file data.csv into alphabetical order?

Answer 14

sort data.csv

Question 15

Which of the following examples shows the general structure of a for loop in a shell script?

Answer 15

for file in *.txt
do
echo $i
done

Question 16

Which operator in a regular expression matches the preceding character either zero or one time?

Answer 16

?

Question 17

!/bin/bash

The file script.sh in the current directory contains the following content:

echo $MYVAR

The following commands are used to execute this script:

MYVAR=value
./script.sh

The result is an empty line instead of the content of the variable MYVAR. How should MYVAR be
set in order to make script.sh display the content of MYVAR?

Answer 17

export MYVAR=value

Question 18

What is the return value of a shell script after successful execution?

Answer 18

0

Question 19

Which of the following commands creates the ZIP archive poems.zip containing all files in the
current directory whose names end in .txt?

Answer 19

zip poems.zip *.txt

Question 20

Which of the following statements are true regarding a typical shell script? (Choose two.)

Answer 20

It has the executable permission bit set.

It is compiled into a binary file compatible with the current machine architecture.

Question 21

Which of the following commands extracts the contents of the compressed archive file1.tar.gz?

Answer 21

tar -xzf file1.tar.gz

Question 22

Which of the following commands finds all lines in the file operating-systems.txt which contain the
term linux, regardless of the case?

Answer 22

cut linux operating-systems.txt

Question 23

Which one of the following statements concerning Linux passwords is true?

Answer 23

Passwords are only stored in hashed form.

Question 24

Which of the following programs are web servers? (Choose two.)

Answer 24

Apache HTTPD
NGINX

Question 25

Which of the following Linux Distributions is derived from Red Hat Enterprise Linux?

Answer 25

CentOS

Question 26

Which of the following statements is true about Free Software?

Answer 26

It may be modified by anyone using it.

Question 27

How is a new Linux computing instance provisioned in an laaS cloud?

Answer 27

A provider-specific configuration file describing the desired installation is uploaded to the cloud
provider.

Question 28

What are the differences between a private web browser window and a regular web browser
window? (Choose three.)

Answer 28

Private web browser windows do not store cookies persistently.

Private web browser windows do not keep records in the browser history.

Private web browser windows do not send regular stored cookies.

Question 29

What is the preferred source for the installation of new applications in a Linux based operating
system?

Answer 29

The distribution’s package repository