Practice Examples and Dumps & Tips for 2022 Latest XK0-004 Valid Tests Dumps
Latest [Sep 03, 2022] 100% Passing Guarantee - Brilliant XK0-004 Exam Questions PDF
Thinking of building a career using the CompTIA Linux+ certification? First, you have to ace its related XK0-004 exam.
CompTIA Linux+ Exam Certification Details:
| Books / Training | CertMaster Learn for Linux+ |
| Passing Score | 720 / 900 |
| Duration | 90 mins |
| Schedule Exam | Pearson VUE CompTIA Marketplace |
| Exam Name | CompTIA Linux+ |
| Exam Price | $338 (USD) |
| Sample Questions | CompTIA Linux+ Sample Questions |
CompTIA XK0-004: Career Prospects
The professionals who pass the CompTIA XK0-004 exam are qualified to get the CompTIA Linux+ certification. With this certificate, they can explore a variety of career prospects. Some of the job roles that they can take up include a Systems Administrator, a Technical Support Specialist, a Linux Administrator, a Web Administrator, and a Network Administrator, among others. The salary outlook for these titles is also attractive as the certified individuals in any of these positions can earn an average of $75,000 per annum. It’s important to mention that some individuals can get more than this average sum as it mostly depends on their job role, experience, and their workplace.
NEW QUESTION 205
A Linux administrator must identify a user with high disk usage. The administrator runs the # du -s /home/
*command and gets the following output:
Based on the output, User3 has the largest amount of disk space used. To clean up the file space, the administrator needs to find out more information about the specific files that are using the most disk space.
Which of the following commands will accomplish this task?
- A. df -k /home/User3/files.txt
- B. find . -name /home/User3 -print
- C. du -a /home/User3/*
- D. du -sh /home/User/
Answer: D
Explanation:
Explanation/Reference: https://unix.stackexchange.com/questions/37221/finding-files-that-use-the-most-disk-space
NEW QUESTION 206
A Linux administrator is using a public cloud provider to host servers for a company's website. Using the provider's tools, the administrator wrote a JSON file to define how to deploy the servers. Which of the following techniques did the administrator use?
- A. Infrastructure as code
- B. Automated configuration
- C. Platform as a service
- D. Build automation
Answer: D
Explanation:
Explanation/Reference: https://cloud.google.com/cloud-build/docs/build-config
NEW QUESTION 207
Users are unable to connect to a server using HTTPS. The administrator runs the following command on the remote system:
Then, the administrator runs the following command from a local workstation:
Which of the following steps should the administrator take to address the issue?
- A. Allow port 443 through the firewall
- B. Start the application to run on port 443
- C. Update the self-signed certificate
- D. Configure the application to run on an active port
Answer: A
NEW QUESTION 208
A Linux server has multiple IPs. A Linux administrator needs to verify if the HTTP server port is bound to the correct IP.
Which of the following commands would BEST accomplish this task?
- A. netstat
- B. route
- C. ip
- D. host
- E. nslookup
Answer: A
Explanation:
Explanation/Reference: https://www.tecmint.com/find-listening-ports-linux/
NEW QUESTION 209
Which of the following is the purpose of the vmlinuxfile on a Linux system?
- A. To prevent a Linux kernel panic
- B. To start a Linux virtual machine
- C. To enable resource access to the network
- D. To provide the executable kernel for the system
Answer: D
Explanation:
Explanation/Reference: https://en.wikipedia.org/wiki/Vmlinux
NEW QUESTION 210
An administrator receives an alarm because the disk of one of the sewers is running out of space. Which of the following commands can be used to see the space that each partition is using?
- A. df -h
- B. fsck /
- C. fdisk -l
- D. du -scg /
Answer: A
NEW QUESTION 211
Ann, a junior systems administrator, is required to add a line to the /etc/yum.conf file. However, she receives the following error message when she tries to add the line:
Ann performs some diagnostics to attempt to find the root cause:
Which of the following commands should Ann execute to write content to /etc/yum?
- A. chattr -I /etc/yum.conf
- B. setfacl -m m:rw /etc/yum.conf
- C. setenforce 0
- D. chmod 755 /etc/yum.conf
Answer: A
Explanation:
https://www.linuxtoday.com/upload/5-chattr-commands-to-make-important-files-immutable-unchangeable-in-linux-141004025008.html
NEW QUESTION 212
A Linux administrator wants to obtain a list of files and subdirectories in the /etc directory that contain the word "services". Once the files and subdirectories are discovered, they should be listed alphabetically in the /var/tmp/foundservices file. Which of the following shell scripts will accomplish this task?
- A. #/bin/bashfind -name services -sort </var/tmp/foundservices
- B. #/bin/bashlocate /etc -sort -name services > /var/tmp/foundservices
- C. #/bin/bashfind /etc -name services | sort > /var/tmp/foundservices
- D. #/bin/bashfind /etc -name services -sort > /var/tmp/foundservices
Answer: B
NEW QUESTION 213
Ann, a user, has created a new directory and noticed that permissions on the new directory are as follows:
drwx------. 1 ann ann 0 Jun 11 08:20 work
Which of the following should the administrator do to restore default permissions for newly created directories?
- A. Modify directory ownership to ann:ann with chown.
- B. Change umask value in /etc/profile.
- C. Execute chattr command to restore default access.
- D. Run chmod command to update permissions.
Answer: B
NEW QUESTION 214
A junior systems administrator needs to make a packet capture file that will only capture HTTP protocol data to a file called test.pcap.
Which of the following commands would allow the administrator to accomplish this task?
- A. tcpdump -i eth0 port 80 -r test.pcap
- B. netcat -p 80 -w test.pcap
- C. tcpdump -i eth0 port 80 -w test.pcap
- D. tshark -r test.pcap -o http
Answer: D
Explanation:
Explanation/Reference:
NEW QUESTION 215
Which of the following commands adds a bootioader that will allow an admrastrator lo boot to a specific kernel version?
- A. mkinitrd
- B. grub2-mkconfig
- C. grub2-install
- D. dracut
Answer: A
NEW QUESTION 216
The following tools help maintain consistency across different systems in an infrastructure:
SUSE Manager
Red Hat Satellite
Spacewalk
If a system file is changed, the tools roll back the file to a predefined configuration.
Which of the following concepts BEST describes this behavior?
- A. Agentless system management
- B. Infrastructure as code
- C. Automated configuration management
- D. Build automation
Answer: D
NEW QUESTION 217
An administrator wants to know the amount of memory installed on a Linux server. Which of the following commands can be used to accomplish this task?
- A. cat /proc/meminfo
- B. cat /proc/sys/meminfo
- C. cat /sys/meminfo
- D. cat /sys/proc/meminfo
Answer: C
Explanation:
Explanation/Reference: https://devconnected.com/how-to-check-ram-on-linux/#:~:text=The%20most%20popular%
20command%20in,use%20the%20"free"%20command.&text=As%20you%20can%20see%2C%20the,(also%
20called%20virtual%20memory)
NEW QUESTION 218
A Linux administrator recently changed the IP addresses of all the web servers from 10.10.50.x to 10.10.100.x.
The administrator needs to update the serverlist.txt file to reflect the change.
The file contains the following:
10:WebSvr01:10.10.50.21:Main
11:WebSvr02:10.10.50.22:Acconting
12:WebSvr03:10.10.50.23:Intranet
20:NFS01:10.10.20.21:FileServer
30:SMTP01:10.10.30.31:Email
Which of the following commands will change the IP addresses and update the files in place?
- A. sed -i 's|.50|.100|g' serverlist.txt
- B. sed 's|.50|.100|g' serverlist.txt
- C. sed -g 's|.50|.100|a' serverlist.txt
- D. sed -i 's|.50|.100|' serverlist.txt
Answer: A
NEW QUESTION 219
A remote server reverts to the incorrect time when it is restarted. Which of the following will save the correct time to the BIOS clock once the time and date have been set on the server?
- A. date -- setclock
- B. hwclock -- systohc
- C. btime -- settime
- D. btime -- setdate
Answer: A
NEW QUESTION 220
While trying to access a website hosted on the server, the systems administrator receives the following error message:
The administrator then performs some diagnostics:
Which of the following commands should the administrator use to fix the issue?
- A. chmod -R 777 /var/www/website
- B. chown -R www:www /var/www/website
- C. chcon -t httpd_sys_content_t /etc/httpd
- D. restorecon /var/www/html/website/index.html
Answer: D
NEW QUESTION 221
An administrator receives a USB drive and wants to make an exact copy of the disk before starting to work on it. One of the partitions on the USB drive was mounted as /dev/sdc1.
Which of the following commands should the administrator use?
- A. dd if=/dev/sdc of=~/usb_copy.img bs=512
- B. dd of=/dev/sdc if=~/usb_copy.img bs=1M
- C. dd if=/dev/sdc1 of=~/usb_copy.img bs=1024
- D. dd if=/dev/sdc1 of=~/usb_copy.img count=1024
Answer: C
NEW QUESTION 222
A server administrator notices that one of the servers cannot connect to its gateway, which has the IP
10.10.10.1.
Which of the following commands should the administrator execute to determine the default gateway of the server?
- A. route -n
- B. ifconfig
- C. ip a default-gw
- D. nslookup
Answer: A
NEW QUESTION 223
A systems administrator wants to download a package from a remote server. Which of the following are the BEST commands to use for this task? (Choose two.)
- A. nc
- B. tar
- C. zip
- D. make
- E. wget
- F. curl
Answer: A,E
NEW QUESTION 224
All users are reporting that they cannot connect to the SFTP server. The administrator runs a scan:
Which of the following would allow the administrator to fix the problem?
- A. Allow SFTP connections on port 25 using /etc/sysconfig/iptables.
- B. Allow SFTP connections on port 20 and 21 using /etc/sysconfig/iptables.
- C. Allow SFTP connections on port 22 using /etc/sysconfig/iptables.
- D. Allow SFTP connections on port 1456 using /etc/sysconfig/iptables.
Answer: C
NEW QUESTION 225
Joe, a user, creates a short shell script, shortscript.sh, and saves it in his home directory with default
permissions and paths. He then attempts to run the script by typing ./shortscript.sh, but the command
fails to execute.
Which of the following commands would have allowed the script to run?
- A. chgrp shortscript.sh Joe
- B. chmod 155 ~/shortscript.sh
- C. chmod u+x shortscript.sh
- D. source ./shortscript.sh
Answer: C
NEW QUESTION 226
A security team informs the Linux administrator that a specific sever is acting as a n pen relay. To which of the following is the security team referring?
- A. The server is acting as a web proxy and allowing outside unauthenticated sources to connect to the server, effectively hiding tie source's IP address for malicious activities.
- B. The server is acting as an unmanaged router, open to the internal and is allowing outside internet traffic into the network with on filtering.
- C. The server it running the SSH service and is open to the internet allowing outside sources to log in to the server without source IP address filtering.
- D. The server has an email service configured to allow outside sources to send email to other external parties on the internet without validation.
Answer: D
NEW QUESTION 227
After cloning a remote repository, a new feature of that project needs to be developed and integrated into the next major release.
Which of the following is the first Git operation to run to begin working on this new feature immediately after the clone?
- A. merge
- B. diff
- C. branch
- D. init
Answer: C
Explanation:
The usual git workflow is to create a new branch where the new feature can be written in isolation without disturbing the existing code until it has been properly debugged, tested, approved for release etc.
Only after all that has happened, then it can be merged with the main branch of the existing code.
So:
git branch [newfeaturename]
git checkout [newfeaturename]
...write code, test code etc...
git checkout main
git merge [newfeaturename]
NEW QUESTION 228
An administrator wants to know the amount of memory installed on a Linux server. Which of the following commands can be used to accomplish this task?
- A. cat /proc/meminfo
- B. cat /proc/sys/meminfo
- C. cat /sys/meminfo
- D. cat /sys/proc/meminfo
Answer: C
Explanation:
Reference:
20command%20in,use%20the%20"free"%20command.&text=As%20you%20can%20see%2C%20the,(also%
20called%20virtual%20memory)
NEW QUESTION 229
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