[2023年10月29日] 最新でリアルなLFCS試験問題集解答
あなたを簡単に合格させるLFCS試験問と正確なLinux Foundation Certified System AdministratorのPDF問題
質問 # 26
Which character starts a comment line in a shell script file?
- A. *
- B. #
- C. /
- D. ;
正解：B
質問 # 27
Which command can be used to delete a group from a Linux system?
- A. groupedit
- B. groupmod
- C. groups
- D. groupdel
正解：D
質問 # 28
Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Choose THREE correct answers.)
- A. 169.255.0.0/16
- B. 172.16.0.0/12
- C. 10.0.0.0/8
- D. 127.0.0.0/8
- E. 192.168.0.0/16
正解：B、C、E
質問 # 29
Which of the following characters can be combined with a separator string in order to read from the current input source until the separator string, which is on a separate line and without any trailing spaces, is reached?
- A. <|
- B. !<
- C. <<
- D. &<
正解：C
解説：
Explanation
質問 # 30
Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays?
- A. 30 0 * * 0 myscript
- B. 30 0-23 * * 0 myscript
- C. 0 0-23 * * 30 myscript
- D. 30 * * * 6 myscript
- E. 0 * * * 30 myscript
正解：B
質問 # 31
Which of the following commands shows the definition of a given shell command?
- A. type
- B. stat
- C. where
- D. case
正解：A
質問 # 32
What can the Logical Volume Manager (LVM) be used for? (Choose THREE correct answers.)
- A. To encrypt logical volumes.
- B. To dynamically change the size of logical volumes.
- C. To dynamically create or delete logical volumes.
- D. To create snapshots.
- E. To create RAID 9 arrays.
正解：B、C、D
質問 # 33
SIMULATION
What command displays all aliases defined in the current shell? (Specify the command without any path information)
正解：
解説：
alias -or- alias -p
質問 # 34
Which run levels should never be declared as the default run level when using SysV init? (Choose TWO correct answers.)
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
正解：A、E
質問 # 35
What is the purpose of the command mailq?
- A. It is a proprietary tool contained only in the qmail MTA.
- B. It fetches new emails from a remote server using POP3 or IMAP.
- C. It is a command-line based tool for reading and writing emails.
- D. It queries the mail queue of the local MTA.
- E. It is a multi-user mailing list manager.
正解：D
質問 # 36
Given the following routing table:
How would an outgoing packet to the destination 192.168.2.150 be handled?
- A. It would be passed to the router 192.168.1.1 on eth0.
- B. It would be directly transmitted on the device wlan0.
- C. It would be passed to the default router 192.168.178.1 on wlan0.
- D. It would be directly transmitted on the device eth0.
- E. It would be passed to the default router 255.255.255.0 on eth0.
正解：A
質問 # 37
CORRECT TEXT
Which command can be used to investigate the properties for a particular window in X by clicking that window? (Specify ONLY the command without any path or parameters.)
正解：
解説：
/usr/bin/xwininfo, xwininfo
質問 # 38
Which of the following commands can be used to extract content from a tar file?
- A. tar -e
- B. tar -xvf
- C. tar -vf
- D. tar-v
- E. tar -c
正解：B
質問 # 39
Which of the following tasks can be accomplished using the command date? (Choose TWO correct answers.)
- A. Set the system clock.
- B. Update the time via NTP.
- C. Synchronize the hardware and system clocks.
- D. Output date and time in different formats.
- E. Set the hardware clock.
正解：A、D
質問 # 40
Whichof the following commands displays the contents of a gzip compressed tar archive?
- A. tar ztf archive.tgz
- B. tar cf archive.tgz
- C. gzip archive.tgz | tar xvf -
- D. gzip -d archive.tgz | tar tvf -
正解：A
質問 # 41
CORRECT TEXT
Which command is used to sync the hardware clock to the system clock? (Specify ONLY the command without any path or parameters.)
正解：
解説：
hwclock, /sbin/hwclock, /usr/sbin/hwclock
質問 # 42
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 # 43
Which of the following commands can be used to determine how long the system has been running? (Choose TWO correct answers.)
- A. time -up
- B. uname -u
- C. uptime
- D. top
- E. up
正解：C、D
質問 # 44
Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?
- A. dd if=/dev/zero of=/dev/sda bs=512 count=1
- B. dd if=/dev/zero of=/dev/sda bs=440 count=1
- C. dd if=/dev/zero of=/dev/sda bs=440
- D. dd if=/dev/zero of=/dev/sda bs=512
正解：B
質問 # 45
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