LFCS Exam Brain Dumps - Study Notes and Theory [Jan-2022]
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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.
If the Candidate has the desire to move up to a higher-paying position in an organization. This certification will help as always.
A candidate might have incredible skills. Employers that do the hiring need to make decisions based on limited information and as it is always. When they view official LFCS certification, they can be guaranteed that a candidate has achieved a certain level of competence.
NEW QUESTION 133
SIMULATION
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 -or- values
NEW QUESTION 134
Which type of filesystem is created by mkfs when it is executed with the block device name only and without any additional parameters?
- A. ext2
- B. XFS
- C. ext3
- D. VFAT
- E. ext4
Answer: A
NEW QUESTION 135
CORRECT TEXT
Which command, depending on its options, can display the open network connections, the routing tables, as well as network interface statistics. (Specify ONLY the command without any path or parameters.)
Answer:
Explanation:
netstat, /bin/netstat, ss, /usr/bin/ss
NEW QUESTION 136
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 137
Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination?
- A. /etc/inittab
- B. /etc/keys
- C. /proc/keys
- D. /etc/reboot
- E. /proc/inittab
Answer: A
NEW QUESTION 138
What is the default nice level when a process is started using the nice command?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 139
Which of the following is true about IPv6?
- A. IPv6 no longer supports multicast addresses.
- B. IPv6 no longer supports broadcast addresses.
- C. IPv4 addresses can be used without any change with IPv6.
- D. With IPv6, the TCP port numbers of most services have changed.
- E. For IPv6, UDP and TCP have been replaced by the Rapid Transmission Protocol RTP.
Answer: B
NEW QUESTION 140
The X11 configuration file xorg.conf is grouped into sections. How is the content of the section SectionName associated with that section?
- A. It is placed after the row [SectionName].
- B. It is placed in curly brackets as in Section SectionName { ... }.
- C. It is placed between a line containing Section "SectionName" and a line containing EndSection.
- D. It is placed between the tags <Section name="SectionName"> and </Section>
- E. It is placed after an initial unindented Section "SectionName" and must be indented by exactly one tab character.
Answer: C
NEW QUESTION 141
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. The kernel thinks that a process is about to open a file in /mnt for reading.
- C. The kernel has not finished flushing diskwrites to the mounted device.
- D. The files in /mnt have been scanned and added to the locate database.
- E. A user has a file open in the /mnt directory.
Answer: E
NEW QUESTION 142
What is the purpose of the command mailq?
- A. It fetches new emails from a remote server using POP3 or IMAP.
- B. It is a proprietary tool contained only in the qmail MTA.
- C. It queries the mail queue of the local MTA.
- D. It is a multi-user mailing list manager.
- E. It is a command-line based tool for reading and writing emails.
Answer: C
NEW QUESTION 143
Which of the following commands will help identify a broken router between the local and the remote machine?
- A. nslookup
- B. traceroute
- C. ps
- D. netstat
- E. ifconfig
Answer: C
NEW QUESTION 144
What output will the following command produce?
seq 1 5 20
- A. 5
10
15
20 - B. 1
5
10
15 - C. 1
2
3
4 - D. 2
3
4
5 - E. 1
6
1
1
1
6
Answer: E
NEW QUESTION 145
CORRECT TEXT
What is the lowest numbered unprivileged TCP port? (Specify the number in digits only.)
Answer:
Explanation:
1024
NEW QUESTION 146
The script, script.sh, consists of the following lines:
#!/bin/bash
echo $2 $1
Which output will appear if the command, ./script.sh test1 test2, is entered?
- A. test1 script.sh
- B. script.sh test1
- C. test1 test2
- D. test2 test1
- E. script.sh test2
Answer: D
NEW QUESTION 147
What is the purpose of the file /etc/profile?
- A. It contains default application profiles for users that run an application for the first time.
- B. It contains the welcome message that is displayed after login.
- C. It contains security profiles defining which users are allowed to log in.
- D. It contains environment variables that are set when a user logs in.
Answer: D
NEW QUESTION 148
CORRECT TEXT
What is the name of the main configuration file for GNU GRUB? (Specify the file name only without any path.)
Answer:
Explanation:
menu .lst, grub.conf, grub.cfg
NEW QUESTION 149
What is the correct command to extract the contents of the archive file download.bz2?
- A. uncompress download.bz2
- B. unzip download.bz2
- C. unzip2 download.bz2
- D. unpack download.bz2
- E. bunzip2 download.bz2
Answer: E
NEW QUESTION 150
Which command will display the last line of the file foo.txt?
- A. tail foo.txt
- B. tail -n 1 foo.txt
- C. last -n 1 foo.txt
- D. head -n 1 foo.txt
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION 151
After issuing:
function myfunction { echo $1 $2 ; }
in Bash, which output does:
myfunction A B C
Produce?
- A. A C
- B. C B A
- C. A B
- D. A B C
- E. B C
Answer: C
NEW QUESTION 152
Which grep command will print only the lines that do not end with a / in the file foo?
- A. grep '/$' foo
- B. grep -v '/$' foo
- C. grep -v '/#' foo
- D. grep '/#' foo
Answer: B
NEW QUESTION 153
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