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Linux Foundation Certified System Administrator (LFCS) certification exam is a highly respected and widely recognized certification program in the IT industry. LFCS exam is designed to validate the skills and knowledge of individuals who want to demonstrate their proficiency in Linux administration. Linux Foundation Certified System Administrator certification program provides individuals with a competitive advantage in the IT industry and is recognized by a variety of organizations in the IT industry.
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 # 122
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 '[Ff]red' data_file
- D. grep -i fred data_file
- E. grep -v fred data_file
Answer: C,D
NEW QUESTION # 123
What is the first program that is usually started, at boot time, by the Linux kernel when using SysV init?
- A. /lib/init.so
- B. /boot/init
- C. /proc/sys/kernel/init
- D. /etc/rc.d/rcinit
- E. /sbin/init
Answer: E
NEW QUESTION # 124
Which of the following command sets the Bash variable named TEST with the content FOO?
- A. set TEST="FOO"
- B. TEST = "FOO"
- C. TEST="FOO"
- D. var TEST="FOO"
Answer: C
NEW QUESTION # 125
Which of the following file permissions belong to a symbolic link?
- A. lrwxrwxrwx
- B. srwxrwxrwx
- C. +rwxrwxrwx
- D. -rwxrwxrwx
Answer: A
NEW QUESTION # 126
Which command is used to set restrictions on the size of a core file that is created for a user when a program crashes?
- A. quota
- B. core
- C. edquota
- D. ulimit
Answer: D
NEW QUESTION # 127
What is the default action of the split command on an input file?
- A. It will break the file into new files that are no more than 5% of the size of the original file.
- B. It will break the file into new files of 1,024 byte pieces each.
- C. It will break the file into new files of 1,024 kilobytepieces each.
- D. It will break the file into new files of 1,000 line pieces each.
Answer: D
NEW QUESTION # 128
When using rpm --verify to check files created during the installation of RPM packages, which ofthe following information is taken into consideration? (Choose THREE correct answers.)
- A. Timestamps
- B. Inodes
- C. GnuPG signatures
- D. File sizes
- E. MD5 checksums
Answer: A,D,E
NEW QUESTION # 129
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. The files in /mnt have been scanned and added to the locate database.
- B. A user has a file open in the /mnt directory.
- C. The kernel has not finished flushing disk writes to the mounted device.
- D. The kernel thinks that a process is about to open a file in /mnt for reading.
- E. Another file system still contains a symlink to a file inside /mnt.
Answer: B
NEW QUESTION # 130
When starting a program with the nice command without any additional parameters, which nice level is set for the resulting process?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 131
Which of the following fields can be found in the /etc/group file? (Choose THREE correct answers.)
- A. The password of the group.
- B. The home directory of the group.
- C. The name of the group.
- D. The list of users that belong to the group.
- E. The description of the group.
Answer: A,C,D
NEW QUESTION # 132
Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?
- A. echo -n "Hello" >>/tmp/myfile.txt
- B. echo "Hello" >/tmp/myfile.txt
- C. touch /tmp/myfile.txt
- D. sed -ie "s/1/2/" /tmp/myfile.txt
- E. file /tmp/myfile.txt
Answer: E
NEW QUESTION # 133
Which of the following kernel parameters instructs the kernel to suppress most boot messages?
- A. nomesg
- B. silent
- C. verbose=0
- D. quiet
Answer: D
NEW QUESTION # 134
CORRECT TEXT
Which signal is missing from the following command that is commonly used to instruct adaemon to reinitialize itself, including reading configuration files?
killall -s _______ daemon
Answer:
Explanation:
HUP,
SIGHUP, 1
NEW QUESTION # 135
Which configuration file would be edited to change the default options for outbound SSH sessions?
- A. /etc/ssh/client
- B. /etc/ssh/ssh_config
- C. /etc/ssh/ssh_client
- D. /etc/ssh/ssh
- E. /etc/ssh/sshd_config
Answer: B
NEW QUESTION # 136
After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem. Which of the following describes the resulting situation?
- A. foo and bar would both be removed.
- B. Both foo and bar would remain accessible.
- C. foo would be removed while bar would remain accessible.
- D. The user is prompted whether bar should be removed, too.
- E. foo would be removed. bar would still exist but would be unusable.
Answer: C
NEW QUESTION # 137
Which of the following keywords can be used in the file /etc/nsswitch.conf to specify a source for host name lookups? (Choose TWO correct answers.)
- A. files
- B. hosts
- C. resolv
- D. dns
- E. remote
Answer: A,D
NEW QUESTION # 138
After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoid reconfiguration of existing applications? (Choose TWO correct answers.)
- A. By creating a hard link from the old to the new path of the data.
- B. By mounting the new filesystem on the original path of the data.
- C. By running the command touch on the old path.
- D. By creating a symbolic link from the old to the new path of the data.
- E. By creating an ACL redirection from the old to the new path of the data.
Answer: B,D
NEW QUESTION # 139
What information can the lspci command display about the system hardware? (Choose THREE correct answers.)
- A. Device IRQ settings
- B. Ethernet MAC address
- C. PCI bus speed
- D. Device vendor identification
- E. System battery type
Answer: A,C,D
NEW QUESTION # 140
For accessibility assistance, which of the following programs is an on-screen keyboard?
- A. xOSK
- B. atkb
- C. GOK
- D. xkb
Answer: C
NEW QUESTION # 141
CORRECT TEXT
Which command, available with all MTAs, is used to list the contents of the MTA's mail queue? (Specify ONLY the command without any path or parameters.)
Answer:
Explanation:
mailq, /usr/bin/mailq, sendmail -bp, /usr/sbin/sendmail -bp, /usr/lib/sendmail -bp, sendmail, /usr/sbin/sendmail, /usr/lib/sendmail
NEW QUESTION # 142
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 # 143
The output of the program date should be saved in the variable actdat. What is the correct statement?
- A. actdat=`date`
- B. set actdat='date'
- C. actdat=date
- D. date > $actdat
- E. date | actdat
Answer: A
NEW QUESTION # 144
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