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The Linux Foundation LFCS exam is a practical, hands-on exam that evaluates the candidate's ability to perform real-world tasks in a Linux environment. It covers a wide range of topics including system architecture, user management, file system management, network configuration, security, and troubleshooting. LFCS exam consists of 60 multiple-choice questions and is administered online. Candidates must complete the exam within 2 hours and are required to obtain a passing score of 66% or higher to earn the certification.
NEW QUESTION # 40
What does the command mount -a do?
- A. It mounts all filesystems listed in /etc/fstab which have the option auto set.
- B. It mounts all filesystems listed in /etc/fstab which have the option noauto set.
- C. It mounts all user mountable filesystems for the current user.
- D. It shows all mounted filesystems.
- E. It mounts all available filesystems onto the current directory.
Answer: A
NEW QUESTION # 41
CORRECT TEXT
Which world-writable directory should be placed on a separate partition inorder to prevent users from being able to fill up the / filesystem? (Specify the full path to the directory.)
Answer:
Explanation:
/tmp, tmp, /var/tmp, /tmp/, /var/tmp/
NEW QUESTION # 42
What is the purpose of the iconv command?
- A. It changes the mode of an inode in the ext4 file system.
- B. It converts files from one character encoding to another.
- C. It verifies that the root directory tree complies to all conventions from the Filesystem Hierarchy Standard (FHS).
- D. It converts bitmap images from one format to another such as PNG to JPEG.
- E. It displays additional meta information from icon files ending in .ico.
Answer: B
NEW QUESTION # 43
How many fields are in a syntactically correct line of /etc/fstab?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: C
NEW QUESTION # 44
Which variable defines the directories in which a Bash shell searches for executable commands?
- A. PATHRC
- B. BASHRC
- C. PATH
- D. BASHEXEC
- E. EXECPATH
Answer: C
NEW QUESTION # 45
CORRECT TEXT
What word is missing from the following SQL statement?
insert into tablename ________(909, 'text');
(Please specify the missing word using lower-case letters only.)
Answer:
Explanation:
VALUES,
values
NEW QUESTION # 46
Which RPM command will output the name of the package which supplied the file /etc/exports?
- A. rpm -qf /etc/exports
- B. rpm -qi /etc/exports
- C. rpm -Kl /etc/exports
- D. rpm -qp /etc/exports
- E. rpm -F /etc/exports
Answer: A
NEW QUESTION # 47
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 ALL_MESSAGES="pt"
- B. export LC_MESSAGES="pt"
- C. export MESSAGE="pt"
- D. export LANGUAGE="pt"
- E. export UI_MESSAGES="pt"
Answer: B
NEW QUESTION # 48
Which of the following commands will send output from the program myapp to both standard output (stdout) and the file file1.log?
- A. tee myapp file1.log
- B. cat < myapp | cat > file1.log
- C. myapp 0>&1 | cat > file1.log
- D. myapp | cat > file1.log
- E. myapp | teefile1.log
Answer: E
NEW QUESTION # 49
How many fields are in a syntactically correct line of /etc/fstab?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: C
Explanation:
Explanation
NEW QUESTION # 50
Which grep command will print only the lines that do not end with a / in the file foo?
- A. grep '/#' foo
- B. grep -v '/#' foo
- C. grep '/$' foo
- D. grep -v '/$' foo
Answer: D
NEW QUESTION # 51
What output will the following command produce?
seq 1 5 20
- A. 5
10
15
20 - B. 1
5
10
15 - C. 1
6
1
1
1
6 - D. 2
3
4
5 - E. 1
2
3
4
Answer: C
NEW QUESTION # 52
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. init 1
- B. telinit 1
- C. runlevel 1
- D. shutdown -single now
- E. shutdown -R 1 now
Answer: A,B
NEW QUESTION # 53
CORRECT TEXT
On a Linux system with shadow passwords enabled, which file in the file system contains the password hashes of all local users? (Specify the full name of the file, including path.)
Answer:
Explanation:
/etc/shadow
NEW QUESTION # 54
Why is the correct configuration of a system's time zone important?
- A. Because the time zone is saved as part of the modification times of files and cannot be changed after a file is created.
- B. Because the environment variables LANG and LC_MESSAGES are, by default, set according to the time zone.
- C. Because the conversion of Unix timestamps to local time relies on the time zone configuration.
- D. Because NTP chooses servers nearby based on the configured time zone.
Answer: C
NEW QUESTION # 55
Which file should be edited to select the network locations from which Debian installation package files are loaded?
- A. /etc/apt/apt.conf.d
- B. /etc/dpkg/dselect.cfg
- C. /etc/apt/apt.conf
- D. /etc/apt/sources.list
- E. /etc/dpkg/dpkg.cfg
Answer: D
NEW QUESTION # 56
Which of the following programs can be used to determine the routing path to a given destination?
- A. traceroute
- B. route
- C. dig
- D. netstat
- E. ping
Answer: A
NEW QUESTION # 57
What does the symbol within regular expressions represent?
- A. Match the preceding qualifier zero or one times.
- B. Match the preceding qualifier zero or more times.
- C. Match a literal character.
- D. Match the preceding qualifier one or more times.
Answer: A
Explanation:
Explanation/Reference:
NEW QUESTION # 58
CORRECT TEXT
Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)
Answer:
Explanation:
groupadd, /usr/sbin/groupadd
NEW QUESTION # 59
After running the command umount /mnt, the following error message is displayed:
umount: /mnt: device is busy.
What is a common reason for this message?
- A. Another file system still contains a symlink to a file inside /mnt.
- B. A user has a file open in the /mnt directory.
- C. The files in /mnt have been scanned and added to the locate database.
- D. The kernel thinks that a process is about to open a file in /mnt for reading.
- E. The kernel has not finished flushing disk writes to the mounted device.
Answer: B
NEW QUESTION # 60
Regarding the command: nice -5 /usr/bin/prog
Which of the following statements is correct?
- A. /usr/bin/prog is executed with a priority of 5.
- B. /usr/bin/prog is executed with a priority of -5.
- C. /usr/bin/prog is executed with a nice level of 5.
- D. /usr/bin/prog is executed with a nice level of -5.
Answer: C
NEW QUESTION # 61
Which of the following commands will reduce all consecutive spaces down to a single space?
- A. tr -s ' ' < a.txt > b.txt
- B. tr '\s' ' ' < a.txt > b.txt
- C. tr -r ' ' '\n' < a.txt >b.txt
- D. tr -d ' ' < a.txt > b.txt
- E. tr -c ' ' < a.txt > b.txt
Answer: A
NEW QUESTION # 62
In a nested directory structure, which find command line option would be used to restrict the command to searching down a particular number of subdirectories?
- A. -dirmax
- B. -s
- C. -n
- D. -maxdepth
- E. -maxlevels
Answer: D
NEW QUESTION # 63
Which of the following environment variables overrides or extends the list of directories holding shared libraries?
- A. LD_LIBRARY_PATH
- B. LD_LOAD_PATH
- C. LD_LIB_PATH
- D. LD_RUN_PATH
- E. LD_SHARE_PATH
Answer: A
NEW QUESTION # 64
Which of the following commands moves and resumes in the background the last stopped shell job?
- A. bg
- B. back
- C. fg
- D. run
Answer: A
NEW QUESTION # 65
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