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XK0-005 Practice Questions

Question # 1

A Linux administrator has logged in to a server for the first time and needs to know which services are allowed through the firewall. Which of the following options will return the results for which the administrator is looking?

A.

firewall-cmd —get-services

B.

firewall-cmd —check-config

C.

firewall-cmd —list-services

D.

systemctl status firewalld



C.

firewall-cmd —list-services




Question # 2
The administrator comptia is not able to perform privileged functions on a newly deployed system. Given the following command outputs:



Which of the following is the reason that the administrator is unable to perform the assigned duties?
A. The administrator needs a password reset.
B. The administrator is not a part of the correct group.
C. The administrator did not update the sudo database.
D. The administrator's credentials need to be more complex.


B. The administrator is not a part of the correct group.



Question # 3

A systems administrator is compiling a report containing information about processes that are listening on the network ports of a Linux server. Which of the following commands will allow the administrator to obtain the needed information?

A.

ss -pint

B.

tcpdump -nL

C.

netstat -pn

D.

lsof -It



C.

netstat -pn




Question # 4
Application code is stored in Git. Due to security concerns, the DevOps engineer does not want to keep a sensitive configuration file, app . conf, in the repository. Which of the following should the engineer do to prevent the file from being uploaded to the repository?
A. Run git exclude app. conf.
B. Run git stash app. conf.
C. Add app . conf to . exclude.
D. Add app . conf to . gitignore.


D. Add app . conf to . gitignore.



Question # 5

A systems administrator is investigating why one of the servers has stopped connecting to the internet.

Which of the following is causing the issue?

A.

The DNS address has been commented out in the configuration file.

B.

The search entry in the /etc/resolv.conf file is incorrect.

C.

Wired connection 1 is offline.

D.

No default route is defined.



A.

The DNS address has been commented out in the configuration file.




Question # 6
An administrator made a change to a system’s network configuration. Which of the following best represents what the administrator should do to have the new configuration take effect?
A. systemctl restart networkd
B. systemctl enable networkd
C. systemctl status networkd
D. systemctl isolate networkd


A. systemctl restart networkd

Explanation: The command systemctl restart networkd is used to apply new network configurations by restarting the network service. This ensures that any changes made to network settings (such as IP addresses, routes, or DNS settings) take effect without requiring a system


Question # 7
A user created the following script file:
# ! /bin/bash
# FILENAME: /home/user/ script . sh echo "hello world"
exit 1
However, when the user tried to run the script file using the command "script . sh, an error returned indicating permission was denied. Which of the follow-ing should the user execute in order for the script to run properly?
A. chmod u+x /home/user/script . sh
B. chmod 600 /home/user/script . sh
C. chmod /home/user/script . sh
D. chmod 0+r /horne/user/script. sh


A. chmod u+x /home/user/script . sh



Question # 8
A file called testfile has both uppercase and lowercase letters:

$ cat testfile ABCDEfgH
IJKLmnoPQ abcdefgH ijklLMNopq
A Linux administrator is tasked with converting testfile into all uppercase and writing it to a new file with the name uppercase. Which of the following commands will achieve this task?
A. tr '(A-Z}' '{a-z}' < testfile > uppercase
B. echo testfile | tr "[Z-A]" "[z-a]" < testfile > uppercase
C. cat testfile | tr '{z-a)' '{Z-A}' < testfile > uppercase
D. tr '[a-z]' '[A-Z]' < testfile > uppercase


D. tr '[a-z]' '[A-Z]' < testfile > uppercase

Explanation: This command will use the tr tool to translate all lowercase letters in the testfile to uppercase letters and write the output to the uppercase file. The first argument ‘[a-z]’ specifies the set of characters to be replaced, and the second argument ‘[A-Z]’ specifies the set of characters to replace with. The ‘<’ symbol redirects the input from the testfile, and the ‘>’ symbol redirects the output to the uppercase file12. References: 1: Linux Tr Command - javatpoint 2: Linux tr Command with Examples - phoenixNAP


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CompTIA XK0-005 Exam Dumps

Exam Name: CompTIA Linux+ Exam
Certification Name: Linux+

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  • Total Questions: 376
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