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[General] Advantages Of CompTIA XK0-005 PDF Dumps Format

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【General】 Advantages Of CompTIA XK0-005 PDF Dumps Format

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CompTIA XK0-005, also known as the CompTIA Linux+ Certification Exam, is a vendor-neutral certification exam designed for IT professionals who want to demonstrate their knowledge and skills in Linux administration. CompTIA Linux+ Certification Exam certification is intended for individuals who have experience in Linux system administration, have a deep understanding of Linux commands and utilities, and can configure, manage, and troubleshoot Linux systems.
CompTIA XK0-005 Exam is an industry-recognized certification that validates the skills and knowledge of individuals seeking a career in Linux administration. CompTIA Linux+ Certification Exam certification is offered by CompTIA, a leading technology association that provides vendor-neutral IT certifications for professionals in various fields. The CompTIA Linux+ certification is designed to test the technical skills and knowledge required to configure, manage, and troubleshoot Linux systems.
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CompTIA Linux+ Certification Exam Sample Questions (Q423-Q428):NEW QUESTION # 423
A Linux administrator booted up the server and was presented with a non-GUI terminal. The administrator ran the command systemctl isolate graphical.target and rebooted the system by running systemctl reboot, which fixed the issue. However, the next day the administrator was presented again with a non-GUI terminal. Which of the following is the issue?
  • A. The administrator did not set the default target to graphical.target.
  • B. The administrator did not set the default target to basic.target.
  • C. The administrator did not shut down the server properly.
  • D. The administrator did not reboot the server properly.
Answer: A
Explanation:
Explanation
The issue is that the administrator did not set the default target to graphical.target. A target is a unit of systemd that groups together other units by a common purpose or state. The graphical.target is a target that starts the graphical user interface (GUI) along with other services. The administrator used the command systemctl isolate graphical.target to switch to this target temporarily, but this does not change the default target that is activated at boot time. To make this change permanent, the administrator should have used the command systemctl set-default graphical.target, which creates a symbolic link from /etc/systemd/system/default.target to
/usr/lib/systemd/system/graphical.target.
The other options are not correct explanations for the issue. The administrator did reboot the server properly by using systemctl reboot, which shuts down and restarts the system cleanly. The administrator did not need to set the default target to basic.target, which is a minimal target that only starts essential services. The administrator did not shut down the server improperly, which could have caused file system corruption or data loss, but not affect the default target. References: systemctl(1) - Linux manual page; How to Change Runlevels (targets) in SystemD

NEW QUESTION # 424
A systems engineer is adding a new 1GB XFS filesystem that should be temporarily mounted under /ops/app.
Which of the following is the correct list of commands to achieve this goal?
  • A.
  • B.
  • C.
  • D.
Answer: A
Explanation:
Explanation
The list of commands in option D is the correct way to achieve the goal. The commands are as follows:
* fallocate -l 1G /ops/app.img creates a 1GB file named app.img under the /ops directory.
* mkfs.xfs /ops/app.img formats the file as an XFS filesystem.
* mount -o loop /ops/app.img /ops/app mounts the file as a loop device under the /ops/app directory. The other options are incorrect because they either use the wrong commands (dd or truncate instead of fallocate), the wrong options (-t or -f instead of -o), or the wrong order of arguments (/ops/app.img
/ops/app instead of /ops/app /ops/app.img). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 10: Managing Storage, pages 323-324.

NEW QUESTION # 425
A Linux systems administrator receives reports from various users that an application hosted on a server has stopped responding at similar times for several days in a row. The administrator logs in to the system and obtains the following output:
Output 1:
Output 2:
Output 3:
Which of the following should the administrator do to provide the BEST solution for the reported issue?
  • A. Configure memory allocation policies during business hours and prevent the Java process from going into a zombie state while the server is idle.
  • B. Configure more CPU cores to allow for the server to allocate more processing and prevent the Java process from consuming all of the available resources.
  • C. Configure a different nice value for the Java process to allow for more users and prevent the Java process from restarting during business hours.
  • D. Configure the swap space to allow for spikes in usage during peak hours and prevent the Java process from stopping due to a lack of memory.
Answer: D
Explanation:
Based on the output of the image sent by the user, the system requires more swap space to allow for spikes in usage during peak hours and prevent the Java process from stopping due to a lack of memory. The output shows that there is only 0 MB of swap space available on the system, which means that there is no room for swapping out memory pages when physical memory is full or low. The output also shows that there is only
793 MB of available memory on the system, which may not be enough to handle high-demand applications such as Java. This may cause Java to stop working due to insufficient memory or trigger an OutOfMemoryError exception. Configuring more swap space on the system would help to alleviate this issue by providing more virtual memory for applications and improving performance. Configuring memory allocation policies during business hours will not help to solve this issue, as it will not increase the amount of available memory or swap space on the system. Configuring a different nice value for Java process will not help to solve this issue, as it will only affect its scheduling priority, not its memory consumption or allocation.
Configuring more CPU cores will not help to solve this issue, as it will only increase processing power, not memory capacity or availability. References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 15: Managing Memory and Process Execution, page 468.

NEW QUESTION # 426
A Linux systems administrator is setting up a new web server and getting 404 - NOT FOUND errors while trying to access the web server pages from the browser. While working on the diagnosis of this issue, the Linux systems administrator executes the following commands:

Which of the following commands will BEST resolve this issue?
  • A. sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
  • B. setenforce 0
  • C. restorecon -R -v /var/www/html
  • D. setsebool -P httpd_can_network_connect_db on
Answer: C
Explanation:
Explanation
The command restorecon -R -v /var/www/html will best resolve the issue. The issue is caused by the incorrect SELinux context of the web server files under the /var/www/html directory. The output of ls -Z
/var/www/html shows that the files have the type user_home_t, which is not allowed for web content. The command restorecon restores the default SELinux context of files based on the policy rules. The options -R and -v are used to apply the command recursively and verbosely. This command will change the type of the files to httpd_sys_content_t, which is the correct type for web content. This will allow the web server to access the files and serve the pages to the browser. The other options are incorrect because they either disable SELinux entirely (sed -i 's/SELINUX=enforcing/SELINUX=disabled/'
/etc/selinux/config or setenforce 0), which is not a good security practice, or enable an unnecessary boolean (setsebool -P httpd_can_network_connect_db on), which is not related to the issue. References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 18: Securing Linux Systems, page 535.

NEW QUESTION # 427
A Linux administrator created a new file system. Which of the following files must be updated to ensure the filesystem mounts at boot time?
  • A. /etc/sysctl
  • B. /etc/fstab
  • C. /etc/nfsmount.conf
  • D. /etc/filesystems
Answer: B
Explanation:
Explanation
The file that must be updated to ensure the filesystem mounts at boot time is /etc/fstab. This file contains information about the filesystems that are mounted automatically by the mount -a command, which is usually invoked during the system startup. The /etc/fstab file has six fields for each filesystem: device name, mount point, filesystem type, mount options, dump frequency, and pass number. To add a new filesystem to the
/etc/fstab file, you need to specify these fields correctly and make sure the mount point directory exists.
The other options are not correct files for controlling persistent mount points of filesystems. The /etc/sysctl file is used to configure kernel parameters at runtime. The /etc/filesystems file is used to specify the order of filesystem types used by mount when no filesystem type is given. The /etc/nfsmount.conf file is used to set options for mounting NFS filesystems. References: Persistently mounting file systems; fstab(5) - Linux manual page

NEW QUESTION # 428
......
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