Master 2023 Latest The Questions Linux Foundation Certified and Pass LFCS Real Exam!
Penetration testers simulate LFCS exam PDF
The LFCS certification exam is designed for professionals who have experience in Linux system administration and are looking to validate their skills and knowledge. LFCS exam tests various aspects of Linux system administration, including installation, configuration, maintenance, and troubleshooting. It is a performance-based exam that requires the candidate to complete a series of tasks on a live system, which simulates real-world scenarios.
NEW QUESTION # 57
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. grep -v fred data_file
- B. grep '[Ff]red' data_file
- C. egrep fred data_file
- D. grep '[f]red' data_file
- E. grep -i fred data_file
Answer: B,E
NEW QUESTION # 58
CORRECT TEXT
What is the lowest numbered unprivileged TCP port? (Specify the number in digits only.)
Answer:
Explanation:
1024
NEW QUESTION # 59
In case neither cron.allow nor cron.deny exist in /etc/, which of the following is true?
- A. The cron daemon will refuse to start and report missing files in the system's logfile.
- B. Without additional configuration, all users may have user specific crontabs.
- C. Without additional configuration, no users may have user specific crontabs.
- D. When a user creates a user specific crontab the system administrator must approve it explicitly.
Answer: C
NEW QUESTION # 60
Which of the following shell redirections will write standard output and standard error output to a file named filename?
- A. 1>&2>filename
- B. 1&2>filename
- C. >filename 2>&1
- D. 2>&1 >filename
- E. >>filename
Answer: C
NEW QUESTION # 61
SIMULATION
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 # 62
Which of the following commands can be used to locate programs and their corresponding man pages and configuration files?
- A. dirname
- B. query
- C. which
- D. whereis
- E. basename
Answer: D
NEW QUESTION # 63
CORRECT TEXT
Which command is used to create and initialize the files used to store quota information? (Specify ONLY the commandwithout any path or parameters.)
Answer:
Explanation:
quotacheck
NEW QUESTION # 64
Which of the following commands will help identify a broken router between the local and the remote machine?
- A. ps
- B. traceroute
- C. nslookup
- D. netstat
- E. ifconfig
Answer: B
NEW QUESTION # 65
What is the command to delete the default gateway from the system IP routing table? (Choose TWO correct answers.)
- A. ip route del default
- B. ifconfig unset default
- C. sysctl ipv4.default_gw=0
- D. netstat -r default
- E. route del default
Answer: A,E
NEW QUESTION # 66
Which file inside the CUPS configuration directory contains the definition of the printers?
- A. snmp.conf
- B. cupsd.conf
- C. printcap.conf
- D. printers.conf
- E. cups-devices.conf
Answer: D
NEW QUESTION # 67
CORRECT TEXT
What word is missing from the following SQL statement?
__________ count(*) from tablename;
(Please specify the missing word using lower-case letters only.)
Answer:
Explanation:
select
NEW QUESTION # 68
Which of the following keywords can be used in the file /etc/resolv.conf? (Choose TWO correct answers.)
- A. lookup
- B. substitute
- C. method
- D. nameserver
- E. search
Answer: D,E
NEW QUESTION # 69
Which configuration file would be edited to change default options for the OpenSSH server?
- A. /etc/ssh/ssh
- B. /etc/ssh/sshd_config
- C. /etc/ssh/server
- D. /etc/ssh/ssh_server
- E. /etc/ssh/ssh_config
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION # 70
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. !<
Answer: A
NEW QUESTION # 71
After modifying GNU GRUB's configuration file, which command must be run for the changes to take effect?
- A. grub
- B. kill -HUP $(pidof grub)
- C. grub-install
- D. No action is required
Answer: D
NEW QUESTION # 72
Which of the following commands prints all files and directories within the /tmp directory or its subdirectories which are also owned by the user root? (Choose TWO correct answers.)
- A. find -path /tmp -user root -print
- B. find /tmp -uid root -print
- C. find/tmp -user root
- D. find -path /tmp -uid root
- E. find /tmp -user root -print
Answer: C,E
NEW QUESTION # 73
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