Question 1

Which of the following commands can be used to download the RPM package kernel without installing it?
A) yum download --no-install kernel
B) yumdownloader kernel
C) rpm --download --package kernel
D) rpmdownload kernel

Accepted Answer

The answer of Which of the following commands can be...

Question 2

Which of the following statements is correct regarding the command foo 1> bar?
A) The stdout from the command foo is appended to the file bar.
B) The stdout from the command foo overwrites the file bar.
C) The command foo receives its stdin from the file bar.
D) The command foo receives its stdin from the stdout of the command bar.
E) The stderr from the command foo is saved to the file bar.

Accepted Answer

The command "foo 1> bar" redirects the standard output (stdout) of the command "foo" to the file "bar", overwriting its contents.

Question 3

Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?
A) file /tmp/myfile.txt
B) echo "Hello" >/tmp/myfile.txt
C) sed -ie "s/1/2/" /tmp/myfile.txt
D) echo -n "Hello" >>/tmp/myfile.txt
E) touch /tmp/myfile.txt

Accepted Answer

The `file` command is used to determine the type of a file and does not modify the file, so it does not update the modify timestamp.

Question 4

Which of the following commands will set the variable text to olaf is home? (Choose two)
A) text=olaf\ is\ home
B) text=$olaf is home
C) $text='olaf is home'
D) text=='olaf is home'
E) text="olaf is home"

Accepted Answer

A) text=olaf\ is\ home: This command will set the variable text to olaf is home because the backslash character \ is used to escape the space character.E) text="olaf is home": This command will set the variable text to olaf is home because the double quotes " are used to enclose the string.

Question 5

What is the default nice level when a process is started using the nice command?
A) -10
B) 10
C) 20
D) 0

Accepted Answer

The default nice level when a process is started using the nice command is 10, which means the process will have a lower priority compared to processes with a lower nice value.

Question 6

Which variable defines the directories in which a Bash shell searches for executable commands?
A) BASHEXEC
B) BASHRC
C) PATH
D) EXECPATH
E) PATHRC

Accepted Answer

The PATH variable in a Bash shell specifies the directories where the shell looks for executable commands.

Question 7

Which of the following commands determines the type of a file by using a definition database file which contains information about all common file types?
A) magic
B) type
C) file
D) pmagic
E) hash

Accepted Answer

The `file` command in Unix/Linux systems uses a database of definitions to determine the type of a file.

Question 8

Which RPM command will output the name of the package which supplied the file /etc/exports?
A) rpm -F /etc/exports
B) rpm -qf /etc/exports
C) rpm -Kl /etc/exports
D) rpm -qp /etc/exports
E) rpm -qi /etc/exports

Accepted Answer

rpm -qf /etc/exports will output the name of the package which supplied the file /etc/exports.

Question 9

Which of the following commands lists all currently installed packages when using RPM package management?
A) yum --query --all
B) yum --list --installed
C) rpm --query --all
D) rpm --list -installed

Accepted Answer

The command "rpm --query --all" (or "rpm -qa") is used to list all currently installed packages in RPM package management systems.

Question 10

What is the effect of the egrep command when the -v option is used?
A) It enables color to highlight matching parts.
B) It only outputs non-matching lines.
C) It shows the command's version information.
D) It changes the output order showing the last matching line first.

Accepted Answer

The -v option in the egrep command inverts the match, meaning it outputs only the lines that do not match the given pattern.

Question 11

Which file should be edited to select the network locations from which Debian installation package files are loaded?
A) /etc/dpkg/dpkg.cfg
B) /etc/apt/apt.conf
C) /etc/apt/apt.conf.d
D) /etc/apt/sources.list
E) /etc/dpkg/dselect.cfg

Accepted Answer

The /etc/apt/sources.list file is used to specify the network locations (repositories) from which Debian package files are downloaded during installation and updates.

Question 12

Which of the following sequences in the vi editor saves the opened document and exits the editor? (Choose TWO correct choices.)
A) esc ZZ
B) ctrl :w!
C) esc zz
D) esc :wq!
E) ctrl XX

Accepted Answer

A) esc ZZ saves the opened document and exits the editor.D) esc :wq! saves the opened document and exits the editor.

Question 13

In the vi editor, which of the following commands will copy the current line into the vi buffer?
A) c
B) cc
C) 1c
D) yy
E) 1y

Accepted Answer

The 'yy' command in vi copies the current line into the buffer, allowing it to be pasted elsewhere.

Question 14

Which of the following commands updates the linker cache of shared libraries?
A) mkcache
B) soconfig
C) mkldconfig
D) lddconfig
E) ldconfig

Accepted Answer

The `ldconfig` command is used to update the linker cache of shared libraries in Unix-like operating systems.

Question 15

Which of the following commands can be used to create a USB storage media from a disk image?
A) gdisk
B) dd
C) cc
D) fdisk
E) mount

Accepted Answer

The `dd` command is used to convert and copy files, and it is commonly used to create a USB storage media from a disk image by copying the image file to the USB device.

Question 16

How can the normal output of a command be written to a file while discarding the error output?
A) command >2>file 1&>/dev/null
B) command < output > /dev/null
C) command > discard-error > file
D) command > /dev/null 2&>1 output
E) command >file 2>/dev/null

Accepted Answer

The command redirects the standard output to a file and the standard error to /dev/null, effectively discarding the error output.

Question 17

What is the output of the following command? echo "Hello World" | tr -d aieou
A) Hello World
B) eoo
C) Hll Wrld
D) eoo Hll Wrld

Accepted Answer

The `tr -d` command deletes the specified characters from the input. In this case, it removes all vowels (a, i, e, o, u) from "Hello World", resulting in "Hll Wrld".

Question 18

From a Bash shell, which of the following commands directly executes the instruction from the file / usr /local/bin/runme.sh without starting a subshell? (Please select TWO choices.)
A) source / usr /local/bin/runme.sh
B) . / usr /local/bin/runme.sh
C) /bin/bash / usr /local/bin/runme.sh
D) / usr /local/bin/runme.sh
E) run / usr /local/bin/runme.sh

Accepted Answer

The source and . commands execute the instructions from the specified file in the current shell, without starting a subshell.

Question 19

Which shell command is used to continue background execution of a suspended command?
A) &
B) bg
C) cont
D) exec
E) :&

Accepted Answer

The 'bg' command is used to resume a suspended job in the background in Unix-like operating systems.

Question 20

Which of the following commands prints a list of 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

Accepted Answer

The `cut` command with `-d :` specifies the delimiter as a colon, and `-f 1,4` selects the first and fourth fields, which correspond to the username and primary group in the `/etc/passwd` file.

Exam 1: Linux Foundation Certified System Administrator

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

Which of the following statements is correct regarding the command foo 1> bar?

Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?

Which of the following commands will set the variable text to olaf is home? (Choose two)

What is the default nice level when a process is started using the nice command?

Which variable defines the directories in which a Bash shell searches for executable commands?

Which of the following commands determines the type of a file by using a definition database file which contains information about all common file types?

Which RPM command will output the name of the package which supplied the file /etc/exports?

Which of the following commands lists all currently installed packages when using RPM package management?

What is the effect of the egrep command when the -v option is used?

Which file should be edited to select the network locations from which Debian installation package files are loaded?

Which of the following sequences in the vi editor saves the opened document and exits the editor? (Choose TWO correct choices.)

In the vi editor, which of the following commands will copy the current line into the vi buffer?

Which of the following commands updates the linker cache of shared libraries?

Which of the following commands can be used to create a USB storage media from a disk image?

How can the normal output of a command be written to a file while discarding the error output?

What is the output of the following command? echo "Hello World" | tr -d aieou

From a Bash shell, which of the following commands directly executes the instruction from the file / usr /local/bin/runme.sh without starting a subshell? (Please select TWO choices.)

Which shell command is used to continue background execution of a suspended command?

Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?