100%合格率保証付きで最高のLFCS試験でリアル問題PDFがある[2023年12月]
LFCS問題集で2023年最新のLinux Foundation LFCS試験問題
質問 # 89
Which of the following fields can be found in the /etc/group file? (Choose THREE correct answers.)
- A. The name of the group.
- B. The password of the group.
- C. The description of the group.
- D. The list of users that belong to the group.
- E. The home directory of the group.
正解：A、B、D
解説：
Explanation/Reference:
質問 # 90
The output of the program date should be saved in the variable actdat. What is the correct statement?
- A. set actdat='date'
- B. actdat=`date`
- C. date > $actdat
- D. actdat=date
- E. date | actdat
正解：B
質問 # 91
Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?
- A. file /tmp/myfile.txt
- B. echo -n "Hello" >>/tmp/myfile.txt
- C. sed -ie "s/1/2/" /tmp/myfile.txt
- D. echo "Hello" >/tmp/myfile.txt
- E. touch /tmp/myfile.txt
正解：A
質問 # 92
How can the normal output of a command be written to a file while discarding the error output?
- A. command < output > /dev/null
- B. command > discard-error > file
- C. command >file 2>/dev/null
- D. command > /dev/null 2&>1 output
- E. command >2>file 1&>/dev/null
正解：C
質問 # 93
CORRECT TEXT
Which file contains a set of services and hosts that will be allowed to connect to the server by going through a TCP Wrapper program such as tcpd? (Specify the full name of the file, including path.)https://lh3.googleusercontent.com/-5cdclmKnbk/AAAAAAAAAAI/AAAAAAAAADM/-SXesH19Ido/s46-c-k-no/photo.jpg
正解：
解説：
/etc/hosts.allow
質問 # 94
CORRECT TEXT
What is the name of the simple graphical login manager that comes with a vanilla X11 installation? (Specify ONLY the command without any path or parameters.)
正解：
解説：
xdm
質問 # 95
What is true about the file /etc/localtime?
- A. It is a symlink to /sys/device/clock/ltime and always contains the current local time.
- B. It is a plain text file containing a string such as Europe/Berlin.
- C. It is created and maintained by the NTP service based on the geolocation of the system's IP address.
- D. It is either a symlink to or a copy of a timezone information file such as /usr/share/zoneinfo/Europe/Berlin.
正解：D
質問 # 96
Where are user specific crontabs stored?
- A. As individual per-user files in /etc/cron.user.d.
- B. In the file /var/cron/user-crontab which is shared by all users.
- C. In the database file /etc/crontab.db which is shared by all users.
- D. In the .crontab file in the user's home directory.
- E. As individual per-user files within /var/spool/cron.
正解：E
質問 # 97
What is the purpose of the command mailq?
- A. It fetches new emails from a remote server using POP3 or IMAP.
- B. It is a proprietary tool contained only in the qmail MTA.
- C. It queries the mail queue of the local MTA.
- D. It is a command-line based tool for reading and writing emails.
- E. It is a multi-user mailing list manager.
正解：C
解説：
Explanation/Reference:
質問 # 98
What output will the command seq 10 produce?
- A. The numbers 1 through 10 with one number per line.
- B. The numbers 0 through 9 with one number per line.
- C. A continuous stream of numbers increasing in increments of 10 until stopped.
- D. The number 10 to standard output.
正解：A
質問 # 99
SIMULATION
What two character sequence is present at the beginning of an interpreted script? (Please specify the TWO correct characters only)
正解：
解説：
#!
質問 # 100
Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers.)
- A. shutdown -r now
- B. telinit 0
- C. shutdown -r "rebooting"
- D. shutdown -k now "rebooting"
- E. telinit 6
正解：A、E
質問 # 101
When the command echo $ outputs 1, which of the following statements is true?
- A. It is the process ID of the echo command.
- B. It is the exit value of the echo command.
- C. It is the process ID of the current shell.
- D. It is the exit value of the command executed immediately before echo.
正解：D
質問 # 102
Which shell command is used to continue background execution of a suspended command?
- A. &
- B. exec
- C. bg
- D. :&
- E. cont
正解：C
質問 # 103
Which of the following options for the kernel's command line changes the systemd boot target to rescue.target instead of the default target?
- A. systemd.default=rescue.target
- B. systemd.runlevel=rescue.target
- C. systemd.target=rescue.target
- D. systemd.service=rescue.target
- E. systemd.unit=rescue.target
正解：E
質問 # 104
Which of the following is observed and corrected by a NTP client?
- A. Adjustments needed to support Daylight Saving Time.
- B. The skew in time between the system clock and the reference clock.
- C. Changes in the time zone of the current computer's location.
- D. The skew in time between the system clock and the hardware clock.
正解：B
質問 # 105
CORRECT TEXT
Which parameter must be passed to ifconfig to activate a previously inactive network interface? (Specify the parameter only without any command, path or additional options)
正解：
解説：
up
質問 # 106
Which of the following commands can be used to download the RPM package kernel without installing it?
- A. rpmdownload kernel
- B. yumdownloader kernel
- C. yum download --no-install kernel
- D. rpm --download --package kernel
正解：B
質問 # 107
Which command will display the last line of the file foo.txt?
- A. tail -n 1 foo.txt
- B. last -n 1 foo.txt
- C. head -n 1 foo.txt
- D. tail foo.txt
正解：A
質問 # 108
Whenremoving a package, which of the following dpkg options will completely remove the files including configuration files?
- A. --clean
- B. -remove
- C. --delete
- D. --purge
正解：D
質問 # 109
CORRECT TEXT
Which directory holds the files that configure the xinetd service when using several configuration files instead of an integrated configuration file? (Specify the full path to the directory.)
正解：
解説：
/etc/xinetd.d/, /etc/xinetd.d
質問 # 110
Which of the following statements is correct regarding the command foo 1> bar?
- A. The command foo receives its stdin from the file bar.
- B. The stdout from the command foo is appended to the file bar.
- C. The stderr from the command foo is saved to the file bar.
- D. The command foo receives its stdin from the stdout of the command bar.
- E. The stdout from the command foo overwrites the file bar.
正解：E
質問 # 111
When the command echo $ outputs 1, which of the following statements is true?
- A. It is the process ID of the echo command.
- B. It is the exit value of the echo command.
- C. It is the process ID of the current shell.
- D. It is the exit value of the command executed immediately before echo.
正解：D
質問 # 112
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