LPI 101-500 Testing Engine 2021

NEW QUESTION 1

Which of the following shell commands makes the already defined variable TEST visible to new child processes? (Choose two.)

• A. visible TEST
• B. declare +x TEST
• C. declare –x TEST
• D. export TEST
• E. export –v TEST

Answer: D

NEW QUESTION 2

When using rpm --verify to check files created during the installation of RPM packages, which of the following information is taken into consideration? (Choose THREE correct answers.)

• A. Timestamps
• B. MD5 checksums
• C. Inodes
• D. File sizes
• E. GnuPG signatures

Answer: ABD

NEW QUESTION 3

The system is having trouble and the engineer wants to bypass the usual /sbin/init start up and run /bin/sh. What is the usual way to pass this change to the kernel from your boot loader?

• A. Start in runlevel 1.
• B. Pass init=/bin/sh on the kernel parameter line.
• C. Pass /bin/sh on the kernel parameter line.
• D. Pass start=/bin/sh on the kernel parameter line.

Answer: B

NEW QUESTION 4

What is the maximum niceness value that a regular user can assign to a process with the nice command when executing a new process?

• A. 9
• B. 19
• C. 49
• D. 99

Answer: B

NEW QUESTION 5

When running the command
sed -e "s/a/b/" /tmp/file >/tmp/file
While /tmp/file contains data, why is /tmp/file empty afterwards?

• A. The file order is incorrec
• B. The destination file must be mentioned before the command to ensure redirection.
• C. The command sed did not match anything in that file therefore the output is empty.
• D. When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens itfor reading.
• E. Redirection for shell commands do not work using the > characte
• F. It only works using the | character instead.

Answer: C

NEW QUESTION 6

A user accidentally created the subdirectory dir in his home directory. Which of the following commands will remove that directory?

• A. rmdir '~/dir'
• B. rmdir "~/dir"
• C. rmdir ~/'dir'
• D. rmdir ~/dir
• E. rmdir ~/\dir

Answer: E

NEW QUESTION 7

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

Answer: D

NEW QUESTION 8

Which command displays the current disk space usage for all mounted file systems? (Specify ONLY the command without any path or parameters.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
du

NEW QUESTION 9

Which of the following commands print the current working directory when using a Bash shell? (Choose two.)

• A. echo “${PWD}”
• B. echo “${WD}”
• C. pwd
• D. printwd
• E. echo “${pwd}”

Answer: C

NEW QUESTION 10

Which wildcards will match the following filenames? (Choose two.) ttyS0
ttyS1 ttyS2

• A. ttyS[1-5]
• B. tty?[0-5]
• C. tty*2
• D. tty[A-Z][012]
• E. tty[Ss][02]

Answer: BD

NEW QUESTION 11

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

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
update, upgrade

NEW QUESTION 12

Which of the following commands enables the setuid (suid) permission on the executable /bin/foo?

• A. chmod 1755 /bin/foo
• B. chmod 4755 /bin/foo
• C. chmod u-s /bin/foo
• D. chmod 755+s /bin/foo

Answer: B

NEW QUESTION 13

After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem. Which of the following describes the resulting situation?

• A. foo and bar would both be removed.
• B. foo would be removed while bar would remain accessible.
• C. foo would be remove
• D. bar would still exist but would be unusable.
• E. Both foo and bar would remain accessible.
• F. The user is prompted whether bar should be removed, too.

Answer: B

NEW QUESTION 14

What is the process ID number of the init process on a SysV init based system?

• A. -1
• B. 1
• C. It is different with each reboot.
• D. It is set to the current run level.

Answer: C

NEW QUESTION 15

While editing a file in vi, the file changes due to another process. Without exiting vi, how can the file be reopened for editing with the new content?

• A. :r
• B. :n
• C. :w
• D. :e

Answer: D

NEW QUESTION 16

What output will be displayed when the user fred executes the following command? echo ‘fred $USER’

• A. fred fred
• B. fred /home/fred/
• C. ‘fred $USER’
• D. fred $USER
• E. ‘fred fred’

Answer: A

NEW QUESTION 17

How can the list of files that would be installed by the RPM package file apache-xml.rpm be previewed?

• A. rpm –qp apache-xml.rpm
• B. rpm –qv apache-xml.rpm
• C. rpm –ql apache-xml.rpm
• D. rpm –qpl apache-xml.rpm

Answer: D

NEW QUESTION 18

Which of the following commands brings a system running SysV init into a state in which it is safe to perform maintenance tasks? (Choose TWO correct answers.)

• A. shutdown -R 1 now
• B. shutdown -single now
• C. init 1
• D. telinit 1
• E. runlevel 1

Answer: CD

NEW QUESTION 19

Which of the following files, located in a user’s home directory, contains the Bash history?

• A. .bashrc_history
• B. .bash_histfile
• C. .history
• D. .bash_history
• E. .history_bash

Answer: B

NEW QUESTION 20

Which of the following commands redirects the output of ls to standard error?

• A. ls >-1
• B. ls <<ERR
• C. ls >&2
• D. ls >>2
• E. ls |error

Answer: C

NEW QUESTION 21

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

• A. mkcache
• B. soconfig
• C. mkldconfig
• D. lddconfig
• E. ldconfig

Answer: E

NEW QUESTION 22

Which of the following commands changes the number of days before the ext3 filesystem on /dev/sda1 has to run through a full filesystem check while booting?

• A. tune2fs -d 200 /dev/sda1
• B. tune2fs -c 200 /dev/sda1
• C. tune2fs -i 200 /dev/sda1
• D. tune2fs -n 200 /dev/sda1
• E. tune2fs --days 200 /dev/sda1

Answer: C

NEW QUESTION 23

Which SysV init configuration file is commonly used to set the default run level? (Specify the full name of the file, including path.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
inittab

NEW QUESTION 24

When removing a package, which of the following dpkg options will completely remove the files including configuration files?

• A. --clean
• B. --delete
• C. --purge
• D. –remove

Answer: C

NEW QUESTION 25

Which command shows all shared libraries required by a binary executable or another shared library? (Specify ONLY the command without any path or parameters.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
ldd

NEW QUESTION 26

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

• A. &
• B. bg
• C. cont
• D. exec
• E. :&

Answer: B

NEW QUESTION 27

What is the default action of the split command on an input file?

• A. It will break the file into new files of 1,024 byte pieces each.
• B. It will break the file into new files of 1,000 line pieces each.
• C. It will break the file into new files of 1,024 kilobyte pieces each.
• D. It will break the file into new files that are no morethan 5% of the size of the original file.

Answer: B

NEW QUESTION 28
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