最新 [2023年11月04日]Linux Foundation LFCS試験練習でテストの素晴らしい結果を出そう
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LFCS試験に合格するには、Linux管理の概念と実践についての堅固な理解が必要です。受験者は、オンラインコースを受講したり、学習資料を読んだり、Linuxベースのシステムで練習したりすることで、試験の準備ができます。Linux Foundationは、Linux Foundation認定エンジニア（LFCE）や認定Kubernetes管理者（CKA）プログラムを含む、さまざまなトレーニングと認定プログラムも提供しています。LFCS認定を取得することは、Linuxシステム管理の分野での専門知識と信頼性を示す素晴らしい方法であり、キャリアアップや高い給与の機会を開拓することができます。
LFCS認定はベンダー中立であり、Linuxシステム管理を学びたいと思っている人なら誰でも受験できます。認定試験はパフォーマンスベースであり、候補者はライブシステム上で一連のタスクを完了する必要があります。この形式により、候補者はLinuxシステム管理の実践的な経験を持ち、実際の世界でのスキルを実証することができます。LFCS認定は、多くの企業や組織にとって、Linuxシステム管理者の貴重な認定として認められており、個人の職業生涯をこの分野で進めるのに役立ちます。
Linux Foundation認定システム管理者（LFCS）認定試験は、ITプロフェッショナルにとって非常に望ましい認定プログラムです。これは、Linuxを主要なオペレーティングシステムとして使用するシステム管理者のスキルと知識をテストするために設計されています。この試験は、ファイルの管理、ハードウェアの構成、システムサービスの管理、およびネットワークの問題のトラブルシューティングなど、さまざまなタスクの実行能力を候補者に求めます。
質問 # 98
What is a purpose of an SSH host key?
- A. It must be sent by any SSH client in addition to a user key in order to identify the client's host.
- B. It is the root key by which all user SSH keys must be signed.
- C. It authenticates any user that logs into a remote machine from the key's host.
- D. It provides the server's identity information to connecting SSH clients.
- E. It is used by system services like cron, syslog or a backup job to automatically connect to remote hosts.
正解：D
質問 # 99
Which grep command will print only the lines that do not end with a / in the file foo?
- A. grep -v '/#' foo
- B. grep -v '/$' foo
- C. grep '/$' foo
- D. grep '/#' foo
正解：B
質問 # 100
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 answers.)
- A. /bin/bash /usr/local/bin/runme.sh
- B. source /usr/local/bin/runme.sh
- C. /usr/local/bin/runme.sh
- D. run /usr/local/bin/runme.sh
- E. . /usr/local/bin/runme.sh
正解：B、E
質問 # 101
Which of the following commands kills the process with the PID 123 but allows the process to "clean up" before exiting?
- A. kill -TERM 123
- B. kill -KILL 123
- C. kill -STOP 123
- D. kill -PIPE 123
正解：A
質問 # 102
Which of the following commands updates the linker cache of shared libraries?
- A. ldconfig
- B. mkcache
- C. lddconfig
- D. mkldconfig
- E. soconfig
正解：A
質問 # 103
Which of the following statements is valid in the file /etc/nsswitch.conf?
- A. multi on
- B. include /etc/nsswitch.d/
- C. hosts: files dns
- D. 192.168.168.4 dns-server
正解：C
質問 # 104
Which of the following commands can be used to limit the amount of memory a user may use?
- A. ulimit
- B. chage
- C. umask
- D. usermod
- E. passwd
正解：A
質問 # 105
Which of the following file permissions belong to a symbolic link?
- A. +rwxrwxrwx
- B. srwxrwxrwx
- C. -rwxrwxrwx
- D. lrwxrwxrwx
正解：D
質問 # 106
Which of the following commands can be used to display the inode number of a given file?
- A. ln
- B. inode
- C. cp
- D. ls
正解：D
質問 # 107
Which of the following commands can be used to display the local routing table? (Choose TWO correct answers.)
- A. netstat
- B. ifconfig
- C. trackroute
- D. dig
- E. route
正解：A、E
質問 # 108
Which of the following options is used in a GRUB Legacy configuration file to define the amount of time that the GRUB menu will be shown to the user?
- A. splash
- B. timeout
- C. hidemenu
- D. showmenu
正解：B
質問 # 109
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 >file 2>/dev/null
- C. command > discard-error > file
- D. command > /dev/null 2&>1 output
- E. command < output > /dev/null
正解：B
質問 # 110
When the command echo $ outputs 1, which of the following statements is true?
- A. It is the exit value of the command executed immediately before echo.
- B. It is the process ID of the current shell.
- C. It is the exit value of the echo command.
- D. It is the process ID of the echo command.
正解：A
質問 # 111
SIMULATION
Which file lists which users can execute commands using sudo? (Specify the full name of the file, including path.)
正解：
解説：
/etc/sudoers
質問 # 112
CORRECT TEXT
Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)
正解：
解説：
groupadd, /usr/sbin/groupadd
質問 # 113
What of the following can be done by the command ifconfig? (Choose TWO correct answers.)
- A. Change the netmask used on a network interface.
- B. Set a network interface active or inactive.
- C. Specify the kernel module to be used with a network interface.
- D. Specify which network services are available on a network interface.
- E. Allow regular users to change the network configuration of a network interface.
正解：A、B
質問 # 114
What is true regarding the command userdel --force --remove bob? (Choose TWO correct answers.)
- A. In case bob was the last member of a group, that group is deleted.
- B. All files owned by bob are remove from all mounted filesystems.
- C. The locate database is updated to drop files owned by bob.
- D. The user bob's home directory is removed.
- E. The user bob is removed from the system's user database.
正解：D、E
質問 # 115
Which of the following signals is sent to a process when the key combination CTRL+C is pressed on the keyboard?
- A. SIGTERM
- B. SIGSTOP
- C. SIGKILL
- D. SIGINT
正解：D
質問 # 116
What information can the lspci command display about the system hardware? (Choose THREE correct answers.)
- A. PCI bus speed
- B. Device vendor identification
- C. Device IRQ settings
- D. System battery type
- E. Ethernet MAC address
正解：A、B、C
解説：
Explanation
質問 # 117
CORRECT TEXT
Which option to the yum command will update the entiresystem? (Specify ONLY the option name without any additional parameters.)
正解：
解説：
update, upgrade
質問 # 118
How can the existing environment variable FOOBAR be suppressedfor the execution of the script./myscript only?
- A. env -u FOOBAR./myscript
- B. set -a FOOBAR="";./myscript
- C. unset -v FOOBAR;./myscript
- D. env -i FOOBAR./myscript
正解：A
質問 # 119
Which command can be used to delete a group from a Linux system?
- A. groupdel
- B. groupedit
- C. groups
- D. groupmod
正解：A
質問 # 120
Which of the following commands lists all defined variables and functions within Bash?
- A. env
- B. set
- C. env -a
- D. echo $ENV
正解：B
質問 # 121
What output will the following command sequence produce?
echo '1 2 3 4 5 6' | while read a b c; do
echo result: $c $b $a;
done
- A. result: 1 2 3 4 5 6
- B. result: 3 4 5 6 2 1
- C. result: 6 5 4
- D. result: 3 2 1
- E. result: 6 5 4 3 2 1
正解：B
解説：
Explanation/Reference:
質問 # 122
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365日更新し続けるLFCS最高の問題集はこちら：https://drive.google.com/open?id=1PMX0k7UN9wRT8vTBJJ-Us_HAtR3pTmY2