Detailed Explanation with Core 2 References:PowerShell is a powerful scripting language used in Windows environments to automate administrative tasks and configure services across multiple systems.
According to Core 2, understanding scripting languages like PowerShell is essential for automating administrative functions (Core 2 Objective 4.8).

When a user can access the local network (as evidenced by printing to network printers) but not the internet, the issue is often related to Domain Name System (DNS) resolution. DNS is responsible for translating domain names (like google.com) into IP addresses that computers use to communicate. If the DNS settings are incorrect or the DNS server is unreachable, the computer won't be able to find the IP addresses of websites and other internet resources.

Resource Monitor will help a technician identify the issue when a user reports a computer is running slow1

Rollback refers to the steps to be taken if an issue occurs during a change implementation. It means restoring the system to its previous state before the change was applied, using backup data or configuration files. It can minimize the impact and downtime caused by a failed change. Testing refers to the steps to be taken before a change implementation, to verify that the change works as expected and does not cause any errors or conflicts. Risk refers to the potential negative consequences of a change implementation, such as data loss, security breach, performance degradation, etc. Acceptance refers to the steps to be taken after a change implementation, to confirm that the change meets the requirements and expectations of the stakeholders.
Verified References: https://www.comptia.org/blog/change-management-process https://www.comptia.org
/certifications/a

The technician should use the Personalization option in the Windows settings to enable a Screensaver lock.
The Personalization option allows users to customize the appearance and behavior of their desktop, such as themes, colors, backgrounds, lock screen and screensaver. The technician can enable a Screensaver lock by choosing a screensaver from the drop-down menu, setting a wait time in minutes and checking the box that says "On resume, display logon screen". This will lock the computer and require a password or PIN to log back in after the screensaver is activated. Ease of Access is an option in the Windows settings that allows users to adjust accessibility features and settings, such as narrator, magnifier, high contrast and keyboard shortcuts. Ease of Access is not related to enabling a Screensaver lock. Privacy is an option in the Windows settings that allows users to manage privacy and security settings, such as location, camera, microphone and app permissions. Privacy is not related to enabling a Screensaver lock. Update and Security is an option in the Windows settings that allows users to check and install updates, troubleshoot problems, backup files and restore system. Update and Security is not related to enabling a Screensaver lock. References: CompTIA A+ Core 2 (220-1002) Certification Exam Objectives Version 4.0, Domain 1.7