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Linux Foundation Certified System Administrator (LFCS) exam is a top-of-the-line certification that validates the knowledge and skills of a Linux system administrator. LFCS exam is designed to test the candidate's proficiency in the fundamentals of Linux system administration, including installation and configuration of Linux systems, managing user and group accounts, managing file systems and storage devices, and basic network configuration.
NEW QUESTION # 10
Which of the following commands can be used to display the local routing table? (Choose TWO correct answers.)
- A. dig
- B. trackroute
- C. ifconfig
- D. netstat
- E. route
Answer: D,E
Explanation:
Explanation/Reference:
NEW QUESTION # 11
Which file should be edited to select the network locations from which Debian installation package files are loaded?
- A. /etc/apt/sources.list
- B. /etc/apt/apt.conf.d
- C. /etc/dpkg/dselect.cfg
- D. /etc/apt/apt.conf
- E. /etc/dpkg/dpkg.cfg
Answer: A
NEW QUESTION # 12
Which of the following commands changes the number of days before the ext3 filesystem on /dev/sda1 has to run through a full filesystem check while booting?
- A. tune2fs -i 200 /dev/sda1
- B. tune2fs -n 200/dev/sda1
- C. tune2fs -c 200 /dev/sda1
- D. tune2fs -d 200 /dev/sda1
- E. tune2fs --days 200 /dev/sda1
Answer: A
NEW QUESTION # 13
CORRECT TEXT
Which file specifies the user accounts that can NOT submit jobs via at or batch? (Provide the full path and filename)
Answer:
Explanation:
/etc/at.deny
NEW QUESTION # 14
Where are user specific crontabs stored?
- A. In the file /var/cron/user-crontab which is shared by all users.
- B. In the .crontab file in the user's home directory.
- C. As individual per-user files in /etc/cron.user.d.
- D. As individual per-user files within /var/spool/cron.
- E. In the database file /etc/crontab.db which is shared by all users.
Answer: D
NEW QUESTION # 15
Which character, added to the end of a command, runs that command in the background as a child process of the current shell?
- A. +
- B. &
- C. #
- D. !
- E. %
Answer: B
NEW QUESTION # 16
When trying to unmount a device it is reported as being busy. Which of the following commands could be used to determine which process is causing this?
- A. strace
- B. debug
- C. traceroute
- D. nessus
- E. lsof
Answer: E
NEW QUESTION # 17
Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?
- A. chmod 775 /bin/foo
- B. chmod 577 /bin/foo
- C. chmod u=rwx,go=rx /bin/foo
- D. chmod o+rwx,a+rx /bin/foo
Answer: C
NEW QUESTION # 18
Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH?
- A. ssh-agent
- B. ssh-add
- C. ssh-keygen
- D. sshd
Answer: A
NEW QUESTION # 19
Which of the following fields are available in both the global /etc/crontab file as well as in user-specific crontab files? (Select TWO correct answers)
- A. Year
- B. Command
- C. Username
- D. Minute
Answer: B,D
NEW QUESTION # 20
Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?
- A. file /tmp/myfile.txt
- B. echo "Hello" >/tmp/myfile.txt
- C. echo -n "Hello" >>/tmp/myfile.txt
- D. sed -ie "s/1/2/" /tmp/myfile.txt
- E. touch /tmp/myfile.txt
Answer: A
NEW QUESTION # 21
Which command makes the shell variable named VARIABLE visible to subshells?
- A. export VARIABLE
- B. export $VARIABLE
- C. env VARIABLE
- D. set VARIABLE
- E. set $VARIABLE
Answer: A
NEW QUESTION # 22
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. source /usr/local/bin/runme.sh
- B. /usr/local/bin/runme.sh
- C. . /usr/local/bin/runme.sh
- D. run /usr/local/bin/runme.sh
- E. /bin/bash /usr/local/bin/runme.sh
Answer: A,C
NEW QUESTION # 23
Which of the following commands can be used to extract content from a tar file?
- A. tar-v
- B. tar -c
- C. tar -xvf
- D. tar -e
- E. tar -vf
Answer: C
NEW QUESTION # 24
What is NOT contained in the locale setting of the operating system?
- A. thousands separator
- B. language
- C. currency symbol
- D. timezone
Answer: D
NEW QUESTION # 25
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