LFCS無料試験問題と解答PDF最新問題2023年12月
最新LFCS試験問題集で最近更新された260問題
質問 # 65
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：A
解説：
Explanation
質問 # 66
Which file contains the date of the last change of a user's password?
- A. /etc/shadow
- B. /etc/gshadow
- C. /etc/passwd
- D. /var/log/shadow
- E. /etc/pwdlog
正解：A
質問 # 67
What is true regarding TCP port 23?
- A. Port 23 is the well known port for the SSH service which provides secure logins.
- B. Port 23 is the well known port for the rlogin service which is SSL secured by default.
- C. Port 23 is the well-known port for the system login services which are encrypted when the user runs the starttls command in his login shell.
- D. Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.
正解：D
質問 # 68
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 # 69
What is the difference between the commands test -e path and test -f path?
- A. They are equivalent options with the same behaviour.
- B. The -f option tests for a regular file. The -e option tests for an empty file.
- C. Both options check the existence of the path. The -f option also confirms that it is a regular file.
- D. The -f option tests for a regular file. The -e option tests for an executable file.
正解：C
質問 # 70
Which of the following tasks can be accomplished using the command date? (Choose TWO correct answers.)
- A. Update the time via NTP.
- B. Set the hardware clock.
- C. Output date and time in different formats.
- D. Synchronize the hardware and system clocks.
- E. Set the system clock.
正解：C、E
質問 # 71
What is the purpose of the command mailq?
- A. It is a command-line based tool for reading and writing emails.
- B. It is a multi-user mailing list manager.
- C. It queries the mail queue of the local MTA.
- D. It fetches new emails from a remote server using POP3 or IMAP.
- E. It is a proprietary tool contained only in the qmail MTA.
正解：C
質問 # 72
Which of the following commands will write a message to the terminals of all logged in users?
- A. yell
- B. wall
- C. print
- D. bcast
- E. mesg
正解：B
質問 # 73
Which grep command will print only the lines that do not end with a / in the file foo?
- A. grep -v '/$' foo
- B. grep '/#' foo
- C. grep -v '/#' foo
- D. grep '/$' foo
正解：A
質問 # 74
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 default router 192.168.178.1 on wlan0.
- B. It would be directly transmitted on the device wlan0.
- C. It would be passed to the router 192.168.1.1 on eth0.
- D. It would be passed to the default router 255.255.255.0 on eth0.
- E. It would be directly transmitted on the device eth0.
正解：C
質問 # 75
Which of the following shell redirections will write standard output and standard error output to a file named filename?
- A. 2>&1 >filename
- B. 1>&2>filename
- C. >filename 2>&1
- D. >>filename
- E. 1&2>filename
正解：C
質問 # 76
In order to display all currently mounted filesystems, which of the following commands could be used? (Choose TWO correct answers.)
- A. lsmounts
- B. cat /proc/filesystems
- C. cat /proc/self/mounts
- D. mount
- E. free
正解：C、D
質問 # 77
Which of the following commands will output all of the lines with the name Fred in upper or lower case but not the word red from the file data_file? (Choose two)
- A. egrep fred data_file
- B. grep '[f]red' data_file
- C. grep -i fred data_file
- D. grep '[Ff]red' data_file
- E. grep -v fred data_file
正解：C、D
質問 # 78
Which command will display the last line of the file foo.txt?
- A. head -n 1 foo.txt
- B. last -n 1 foo.txt
- C. tail foo.txt
- D. tail -n 1 foo.txt
正解：D
質問 # 79
Which of the following commands will help identify a broken router between the local and the remote machine?
- A. ps
- B. traceroute
- C. netstat
- D. nslookup
- E. ifconfig
正解：B
質問 # 80
CORRECT TEXT
What word is missing from the following SQL statement?
__________ count(*) from tablename;
(Please specify the missing word using lower-case letters only.)
正解：
解説：
select
質問 # 81
Which of the following is the device file name for the second partition on the only SCSI drive?
- A. /dev/sd0a2
- B. /dev/hda1
- C. /dev/sd1p2
- D. /dev/sda2
正解：D
質問 # 82
What is NOT contained in the locale setting of the operating system?
- A. language
- B. currency symbol
- C. timezone
- D. thousands separator
正解：C
質問 # 83
Which of the following commands should be added to /etc/bash_profile in order to change the language of messages for an internationalized program to Portuguese (pt)?
- A. export UI_MESSAGES="pt"
- B. export LC_MESSAGES="pt"
- C. export ALL_MESSAGES="pt"
- D. export LANGUAGE="pt"
- E. export MESSAGE="pt"
正解：B
質問 # 84
Which of the following files, when existing, affect the behavior of the Bash shell? (Choose TWO correct answers.)
- A. ~/.bashconf
- B. ~/.bashrc
- C. ~/.bashdefaults
- D. ~/.bash_profile
- E. ~/.bash_etc
正解：B、D
質問 # 85
Which of the following commands can be used to display the inode number of a given file?
- A. ln
- B. inode
- C. ls
- D. cp
正解：C
質問 # 86
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