220-1102 Exam Dumps - CompTIA A+ Certification Core 2 Exam

YUM stands for Yellowdog Updater Modified and it is a command-line tool that allows users to install, update, remove, and manage software packages in Linux. YUM can be used to add functionality to a Linux system by installing new software packages or updating existing ones. To change folder permissions, show documentation, or list file contents, other commands such as chmod, man, or ls can be used in Linux.

An IP address is a unique identifier that allows a device to communicate with other devices on a network. A network printer needs an IP address to be accessible by multiple users on the network. Requesting an unused IP address from the network administrator or using an IP address scanner is the step that should happen immediately before network use is authorized, as it ensures that there is no IP address conflict or duplication on the network. Documenting the date and time of the change, submitting a change request form, and determining the risk level of this change are steps that should happen before requesting an unused IP address.

Zombies and botnets are terms that describe the types of infections that can cause internal workstations to participate in a DDoS (distributed denial-of-service) attack. A DDoS attack is a malicious attempt to disrupt the normal functioning of a website or a network by overwhelming it with a large amount of traffic from multiple sources. Zombies are infected computers that are remotely controlled by hackers without the owners’ knowledge or consent. Botnets are networks of zombies that are coordinated by hackers to launch DDoS attacks or other malicious activities. Keylogger, adware, ransomware, and spyware are not types of infections that can cause internal workstations to participate in a DDoS attack.

The best way for a technician to return the device to service safely is to reinstall the operating system. This is because the device is infected by ransomware, which is a form of malware that encrypts files and demands payment for decryption. Reinstalling the operating system will erase the ransomware and restore the device to its original state. However, this will also delete any data that was not backed up before the infection. Therefore, it is important to have regular backups of critical data and protect them from ransomware attacks1.

The other options are not effective or safe for ransomware recovery. Running an AV scan may not detect or remove the ransomware, especially if it is a new or unknown variant. Installing a software firewall may prevent future attacks, but it will not help with the current infection. Performing a system restore may not work if the ransomware has corrupted or deleted the restore points. Complying with the on-screen instructions is not advisable, as it will encourage the attackers and there is no guarantee that they will provide the decryption key after receiving the payment.

To prevent and recover from ransomware attacks, it is recommended to follow some best practices, such as234:

Use strong passwords and multifactor authentication for all accounts and devices.

Keep all software and firmware updated with the latest security patches.

Avoid opening suspicious or unsolicited emails and attachments.

Educate users and staff on how to recognize and report phishing and social engineering attempts.

Use antivirus software and enable real-time protection.

Enable network segmentation and firewall rules to limit the spread of ransomware.

Implement a Zero Trust security model to verify all requests and devices before granting access.

Create and test backups of critical data and store them offline or in a separate network.

Recover safely by isolating the infected devices, identifying the ransomware variant, and restoring data from backups.

Report any ransomware incidents to law enforcement agencies and seek help from experts.

Sandbox testing is a method of identifying potential issues with a proposed change prior to implementation. It involves creating a simulated or isolated environment that mimics the real system and applying the change to it. This can help to verify that the change works as expected and does not cause any errors or conflicts. Request form, rollback plan and end-user acceptance are other components of a change management process, but they do not involve identifying issues with a change. Verified References: https://www.comptia.org/blog/what-is-sandbox-testing https://www.comptia.org/certifications/a

Disk Management is a tool that allows users to create, format, delete, shrink, extend, and manage partitions on hard drives. If the external hard drive is not formatted or has an incompatible filesystem type, Disk Management can be used to format it with a supported filesystem type such as NTFS, FAT32, or exFAT. Device Manager, Disk Cleanup, and Disk Defragmenter are not tools that can format a hard drive.

Chain of custody is a process that helps ensure that a piece of evidence extracted from a PC is admissible in a court of law. Chain of custody refers to the documentation and tracking of who handled, accessed, modified, or transferred the evidence, when, where, why, and how. Chain of custody can help establish the authenticity, integrity, and reliability of the evidence, as well as prevent tampering, alteration, or loss of the evidence. Data integrity form, valid operating system license, and documentation of an incident are not processes that can ensure that a piece of evidence extracted from a PC is admissible in a court of law.

The best operations to do to resolve the issue of a long boot time at a minimal expense are B. Removing the applications from startup and D. Running the Disk Cleanup utility. These are two simple and effective ways to speed up your PC’s boot time without spending any money on hardware upgrades.

Removing the applications from startup means preventing unnecessary programs from launching automatically when you turn on your computer. This can reduce the load on your system resources and make the boot process faster. You can do this in Windows 10 by pressing Ctrl + Alt + Esc to open the Task Manager, and going to the Startup tab. There, you can see a list of programs that start with your computer, and their impact on the startup performance. You can disable any program that you don’t need by right-clicking on it and choosing Disable12.

Running the Disk Cleanup utility means deleting temporary files, system files, and other unnecessary data that may be taking up space and slowing down your computer. This can free up some disk space and improve the performance of your system. You can do this in Windows 10 by typing disk cleanup in the search box and selecting the Disk Cleanup app. There, you can choose which files you want to delete, such as Recycle Bin, Temporary Internet Files, Thumbnails, etc. You can also click on Clean up system files to delete more files, such as Windows Update Cleanup, Previous Windows installation(s), etc34.