Quiz 2024 XK0-005: CompTIA Linux+ Certification Exam–Reliable Exam Questions Pdf

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Candidates are required to pass the XK0-005 exam to earn the CompTIA Linux+ certification. XK0-005 exam consists of multiple-choice and performance-based questions and is designed to test the candidate's ability to apply their knowledge in real-world scenarios. XK0-005 exam is computer-based and can be taken at any authorized testing center worldwide.

CompTIA XK0-005 certification exam is a valuable credential for IT professionals who work with Linux-based systems. CompTIA Linux+ Certification Exam certification validates the skills and knowledge required for Linux administration, configuration, networking, and security. Candidates can prepare for the exam using a variety of study resources and should have at least 12 months of hands-on experience with Linux systems.

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CompTIA Linux+ Certification Exam Sample Questions (Q79-Q84):

NEW QUESTION # 79
Employees in the finance department are having trouble accessing the file /opt/work/file. All IT employees can read and write the file. Systems administrator reviews the following output:

Which of the following commands would permanently fix the access issue while limiting access to IT and finance department employees?

  • A. chmod 666 file
  • B. chown it:finance file
  • C. setfacl -m g:finance:rw file
  • D. chattr +i file

Answer: C

Explanation:
Explanation
The command setfacl -m g:finance:rw file will permanently fix the access issue while limiting access to IT and finance department employees. The setfacl command is a tool for modifying the access control lists (ACLs) of files and directories on Linux systems. The ACLs are a mechanism that allows more fine-grained control over the permissions of files and directories than the traditional owner-group-others model. The -m option specifies the modification to the ACL. The g:finance:rw means that the group named finance will have read and write permissions on the file. The file is the name of the file to modify, in this case /opt/work/file. The command setfacl -m g:finance:rw file will add an entry to the ACL of the file that will grant read and write access to the finance group. This will fix the access issue and allow the finance employees to access the file.
The command will also preserve the existing permissions of the file, which means that the IT employees will still have read and write access to the file. This will limit the access to IT and finance department employees and prevent unauthorized access from other users. This is the correct command to use to accomplish the task.
The other options are incorrect because they either do not fix the access issue (chattr +i file or chown it:finance file) or do not limit the access to IT and finance department employees (chmod 666 file). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 11: Managing File Permissions and Ownership, page 352.


NEW QUESTION # 80
A systems administrator wants to list all local accounts in which the UID is greater than 500. Which of the following commands will give the correct output?

  • A. awk -F: '$3 > 500 {print $1}' /etc/passwd
  • B. sed '/UID/' /etc/passwd < 500
  • C. cut -d: fl / etc/ passwd > 500
  • D. find /etc/passwd -size +500

Answer: A

Explanation:
The correct command to list all local accounts in which the UID is greater than 500 is:
awk -F: '$3 > 500 {print $1}' /etc/passwd
This command uses awk to process the /etc/passwd file, which contains information about the local users on the system. The -F: option specifies that the fields are separated by colons. The $3 refers to the third field, which is the UID. The condition $3 > 500 filters out the users whose UID is greater than 500. The action {print $1} prints the first field, which is the username.
The other commands are incorrect because:
find /etc/passwd -size +500 will search for files that are larger than 500 blocks in size, not users with UID greater than 500.
cut -d: fl / etc/ passwd > 500 will cut the first field of the /etc/passwd file using colon as the delimiter, but it will not filter by UID or print only the usernames. The > 500 part will redirect the output to a file named 500, not compare with the UID.
sed '/UID/' /etc/passwd < 500 will use sed to edit the /etc/passwd file and replace any line that contains UID with 500, not list the users with UID greater than 500. The < 500 part will redirect the input from a file named 500, not compare with the UID.
Reference:
Linux List All Users In The System Command - nixCraft, section "List all users in Linux using /etc/passwd file".
Unix script getting users with UID bigger than 500 - Stack Overflow, section "Using awk".


NEW QUESTION # 81
An administrator recently updated the BIND software package and would like to review the default configuration that shipped with this version. Which of the following files should the administrator review?

  • A. /etc/bind/bind.conf
  • B. /etc/named.conf.rpmnew
  • C. /etc/named.conf.rpmsave
  • D. /etc/named.conf

Answer: B

Explanation:
After installing a new version of a package that includes a configuration file that already exists on the system, such as /etc/httpd/conf/httpd.conf, RPM will create a new file with the .rpmnew extension instead of overwriting the existing file. This allows the administrator to review the default configuration that shipped with this version and compare it with the current configuration before deciding whether to merge or replace the files. The /etc/named.conf.rpmsave file is created by RPM when a package is uninstalled and it contains a configuration file that was modified by the administrator. This allows the administrator to restore the configuration file if needed. The /etc/named.conf file is the main configuration file for the BIND name server, not the httpd web server. The /etc/bind/bind.conf file does not exist by default in Linux systems. Reference: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 19: Managing Packages and Software, page 561.


NEW QUESTION # 82
One leg of an LVM-mirrored volume failed due to the underlying physical volume, and a systems administrator is troubleshooting the issue. The following output has been provided:

Given this scenario, which of the following should the administrator do to recover this volume?

  • A. Reboot the server. The volume will revert to stripe mode.
  • B. Recreate the logical volume.
  • C. Reboot the server. The volume will automatically go back to linear mode.
  • D. Replace the failed drive and reconfigure the mirror.

Answer: D

Explanation:
Explanation
The administrator should replace the failed drive and reconfigure the mirror to recover the volume. The LVM (Logical Volume Manager) is a tool for managing disk space on Linux systems. The LVM allows the administrator to create logical volumes that span across multiple physical volumes, such as hard disks or partitions. The LVM also supports different types of logical volumes, such as linear, striped, or mirrored. A mirrored logical volume is a type of logical volume that creates a copy of the data on another physical volume, providing redundancy and fault tolerance. The output shows that the logical volume is mirrored and that one leg of the mirror has failed due to the underlying physical volume. This means that one of the physical volumes that contains the data of the logical volume is damaged or missing. This can cause data loss and performance degradation. The administrator should replace the failed drive and reconfigure the mirror to recover the volume. The administrator should identify the failed physical volume by using commands such as pvdisplay, vgdisplay, or lvdisplay. The administrator should then remove the failed physical volume from the volume group by using the vgreduce command. The administrator should then install a new drive and create a new physical volume by using the pvcreate command. The administrator should then add the new physical volume to the volume group by using the vgextend command. The administrator should then reconfigure the mirror by using the lvconvert command. The administrator should replace the failed drive and reconfigure the mirror to recover the volume. This is the correct answer to the question. The other options are incorrect because they either do not recover the volume (reboot the server. The volume will automatically go back to linear mode or reboot the server. The volume will revert to stripe mode) or do not preserve the data of the volume (recreate the logical volume). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 10: Managing Storage, pages 333-334.


NEW QUESTION # 83
Users have been unable to reach www.comptia.org from a Linux server. A systems administrator is troubleshooting the issue and does the following:

Based on the information above, which of the following is causing the issue?

  • A. No default route is set on the server.
  • B. The network interface eth0 is disconnected.
  • C. The name www.comptia.org does not point to a valid IP address.
  • D. The server 192.168.168.53 is unreachable.

Answer: D

Explanation:
Explanation
The issue is caused by the server 192.168.168.53 being unreachable. This server is the DNS server configured in the /etc/resolv.conf file, which is used to resolve domain names to IP addresses. The ping command shows that the server cannot be reached, and the nslookup command shows that the name www.comptia.org cannot be resolved using this server. The other options are incorrect because:
The name www.comptia.org does point to a valid IP address, as shown by the nslookup command using another DNS server (8.8.8.8).
The default route is set on the server, as shown by the ip route command, which shows a default gateway of 192.168.168.1.
The network interface eth0 is connected, as shown by the ip link command, which shows a state of UP for eth0. References: CompTIA Linux+ Study Guide, Fourth Edition, page 457-458, 461-462.


NEW QUESTION # 84
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