[Jan-2022] Linux Foundation LFCS Official Cert Guide PDF
Exam LFCS: Linux Foundation Certified System Administrator - ActualPDF
The benefit in Obtaining the LFCS Exam Certification
If the Candidate has the desire to move up to a higher-paying position in an organization. This certification will help as always.
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When an organization hiring or promotion an employee, then the decision is made by human resources. They do their decisions in a way that takes into record many different factors. One thing is candidates have formal credentials, such as the LFCS.
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NEW QUESTION 114
What is the difference between the commands test -e path and test -f path?
- A. They are equivalent options with the same behavior.
- B. The -f option tests for a regular file. The -e option tests for an executable 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 empty file.
Answer: C
NEW QUESTION 115
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 116
What is true about the file /etc/localtime?
- A. It is a plain text file containing a string such as Europe/Berlin.
- B. It is a symlink to /sys/device/clock/ltime and always contains the current local time.
- C. It is either a symlink to or a copy of a timezone information file such as /usr/share/zoneinfo/Europe/Berlin.
- D. It is created and maintained by the NTP service based on the geolocation of the system's IP address.
Answer: C
NEW QUESTION 117
What output will the command seq 10 produce?
- A. A continuous stream of numbers increasing in increments of 10 until stopped.
- B. The numbers 1 through 10 with one number per line.
- C. The number 10 to standard output.
- D. The numbers 0 through 9 with one number per line.
Answer: B
NEW QUESTION 118
Which of the following find commands will print out a list of files owned by root and with the SUID bit set in / usr?
- A. find /usr -suid -perm +4000
- B. find /usr -uid 0 -perm +4000
- C. find -user root +mode +s /usr
- D. find -type suid -username root -d /usr
- E. find /usr -ls \*s\* -u root
Answer: B
NEW QUESTION 119
Which of the following steps prevents a user from obtaining an interactive login session?
- A. Remove the user from the group staff.
- B. Set the UID for the user to 0.
- C. Create a .nologin file in the user's home directory.
- D. Add the user to /etc/noaccess.
- E. Run the command chsh -s /bin/false with the user name.
Answer: E
NEW QUESTION 120
CORRECT TEXT
Please specify the top directory containing the configuration files for the CUPS printing system. (Specify the full path to the directory.)
Answer:
Explanation:
/etc/cups, /etc/cups/
NEW QUESTION 121
SIMULATION
Which file lists which users can execute commands using sudo? (Specify the full name of the file, including path.)
Answer:
Explanation:
/etc/sudoers
NEW QUESTION 122
What is true regarding the command userdel --force --remove bob? (Choose TWO correct answers.)
- A. All files owned by bob are remove from all mounted filesystems.
- B. The user bob is removed from the system's user database.
- C. The user bob's home directory is removed.
- D. The locate database is updated to drop files owned by bob.
- E. In case bob was the last member of a group, that group is deleted.
Answer: B,C
NEW QUESTION 123
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 '[Ff]red' data_file
- B. grep '[f]red' data_file
- C. egrep fred data_file
- D. grep -v fred data_file
- E. grep -i fred data_file
Answer: A,E
Explanation:
Explanation
NEW QUESTION 124
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. A user has a file open in the /mnt directory.
- B. The kernel has not finished flushing diskwrites to the mounted device.
- C. The kernel thinks that a process is about to open a file in /mnt for reading.
- D. The files in /mnt have been scanned and added to the locate database.
- E. Another file system still contains a symlink to a file inside /mnt.
Answer: A
NEW QUESTION 125
SIMULATION
Which environment variable should be set in order to change the time zone for the commands run from within the environment variable's scope? (Specify the variable name only.)
Answer:
Explanation:
TZ
NEW QUESTION 126
For accessibility assistance, which of the following programs is an on-screen keyboard?
- A. xkb
- B. GOK
- C. xOSK
- D. atkb
Answer: B
NEW QUESTION 127
Which of the following information is stored within the BIOS? (Choose TWO correct answers.)
- A. Boot device order
- B. Hardware configuration
- C. Timezone
- D. The system's hostname
- E. Linux kernel version
Answer: A,B
NEW QUESTION 128
Which of the following file permissions belong to a symbolic link?
- A. +rwxrwxrwx
- B. -rwxrwxrwx
- C. srwxrwxrwx
- D. lrwxrwxrwx
Answer: D
NEW QUESTION 129
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-add
- B. ssh-agent
- C. ssh-keygen
- D. sshd
Answer: B
NEW QUESTION 130
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