2021 CompTIA Linux Certification XK0-004 Updated Dumps

1. XK0-004 Sample Test XK0-004 Sample Test CompTIA Linux+ Certification Exam CompTIA Linux+ Certification Exam https://www.passcert.com/XK0-004.html https://www.passcert.com/XK0-004.html

2. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 1 A Linux systems administrator is setting up SSH access with PKI for several using their newly created RSA keys. Which of the following MOST securely achieves this task? A. Use curl to copy each user’s public key file to the respective system B. Use cp to copy each user’s public key file to the respective system C. Use ssh-copy-id to copy each user’s public key file to the respective system D. Use ssh-copy-id to copy each user’s private key file to the respective system Answer: C 02 03 04

3. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 2 A systems administrator receives a report that the web server is not running after a planned system reboot. After starting the web server manually, which of the following commands should the administrator issue to ensure the web server starts at boot time? A. systemctl service on B. systemctl enable <name>.service C. systemctl service enable D. systemctl on <name>.service Answer: B 01 02 03 04

4. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 3 A user wants to alias dir so it always returns the contents of the ls -la command. However, the user has to reset the alias with every login. Which of the following is the BEST action the user can take to ensure the command is always available? A. echo "alias dir=ls -la" > /etc/profile B. echo "alias dir=ls -la" >> /etc/skel C. echo "alias dir=ls -la" >> ~/.profile D. echo "alias dir=ls -la" > ~/.bashrc Answer: C 01 02 03 04

5. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 4 A Linux systems administrator needs to set permissions on an application with the following parameters: The owner of the application should be able to read, write, and execute the application. Members of the group should be able to read and execute the application. Everyone else should not have access to the application. Which of the following commands would BEST accomplish these tasks? A. chmod 710 <application name> B. chmod 730 <application name> C. chmod 750 <application name> D. chmod 760 <application name> Answer: D 01 02 03 04

6. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 5 An administrator needs to kill the oldest Bash shell running in the system. Which of the following commands should be issued to accomplish this task? A. ps axjf | grep bash to obtain PID kill -9 PID B. ps –eo pid,etime,cmd | grep bash (to obtain PID) kill -9 PID C. ps –eo pid,etime| grep bash (to obtain PID) killall -9 PID D. killall -15 -o bash Answer: D 01 02 03 04

7. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 6 A Linux team is using Git to version a set of custom scripts. A team member has made an update to a script and published the changes to the repository. Which of the following is the BEST way to retrieve the latest changes to the administrator's local working copy? A. git fetch B. git merge C. git commit D. git pull Answer: D 01 02 03 04

8. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 7 01 A technician wants to secure a sensitive workstation by ensuring network traffic is kept within the local subnet. To accomplish this task, the technician executes the following command: echo 0 > /proc/sys/net/ipv4/ip_default_ttl Which of the following commands can the technician use to confirm the expected results? (Choose two.) A. tcpdump B. traceroute C. route D. iperf E. ip F. arp Answer: C,F 02 03 04

9. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 8 01 A Linux administrator needs to disable the Sendmail service on a Linux server and prevent it from being started manually and during boot. Which of the following is the BEST command to do this? A. systemctl reset-failed sendmail B. systemctl mask sendmail C. systemctl stop sendmail D. systemctl disable sendmail Answer: C 02 03 04

10. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 9 In order to comply with new security policies, an administrator needs to prevent the SSH server from using insecure algorithms. Which of the following files should be edited to accomplish this? A. /etc/ssh/sshd_config B. /etc/ssh/ssh_config C. ~/.ssh/ssh_config D. /etc/ssh/known_hosts Answer: A 01 02 03 04

11. Download Passcert latest XK0-004 Sample Test to help you pass successfully Question 10 A new IO card has been added to the security server to log the opening and closing of the main entrance. A switch is attached, so the interface card returns a 1 when the door is opened and a 0 when the door is closed. Which of the following describes the Linux device to which this switch is attached? A. /dev/tty0 B. /dev/port C. /dev/gpio D. /dev/sg0 Answer: B 01 02 03 04

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