Before removing a Trojan virus from a workstation, a technician should disable System Restore. System Restore is a feature that allows users to restore their system to a previous state in case of problems or errors.
However, System Restore can also restore infected files or registry entries that were removed by antivirus software or manual actions. By disabling System Restore, a technician can ensure that the Trojan virus is completely removed and does not reappear after a system restore operation. Scheduling a malware scan may help detect and remove some malware but may not be effective against all types of Trojan viruses. Educating the end user may help prevent future infections but does not address the current issue of removing the Trojan virus. Running Windows Update may help patch some security vulnerabilities but does not guarantee that the Trojan virus will be removed. References: CompTIA A+ Core 2 (220-1002) Certification Exam Objectives Version 4.0, Domain 1.3

Checking running applications (Option B) is the best first step, as background apps consume CPU, RAM, and battery. Identifying and closing resource-heavy apps can immediately improve performance and battery life.
Uninstall unused programs (Option A): Helps free up storage, but it does not address performance and battery drain as directly as managing running apps.
Update the mobile OS (Option C): Important but may not provide immediate relief, and updates sometimes cause additional issues.
Disable network services (Option D): While turning off features like Wi-Fi or Bluetooth can save battery, it does not directly address slow performance.
Reference: CompTIA A+ Core 2 (220-1102) Exam Objectives - 3.4: Given a scenario, troubleshoot and resolve mobile device issues.

The error message "Your connection is not private. Authority invalid." means that the web browser cannot verify the identity or security of the website's SSL certificate. This could indicate that the website has been compromised, has a configuration error, or has an expired or invalid certificate. The user should not proceed to the site or use a different browser, as this could expose their sensitive information to potential attackers.
The user should also not reinstall the browser, as this is unlikely to fix the error and could cause data loss. The best action for the user to take is to report the error to the bank and wait for them to resolve it.
References: : How to Fix "Your Connection Is Not Private" Errors (https://www.howtogeek.com/874436/how- to-fix-your-connection-is-not-private-errors/) : Fix connection errors (https://support.google.com/chrome
/answer/6098869?hl=en)

The piece of hardware that the technician should replace to resolve the issue of the screen failing to rotate on a mobile device that was dropped is the accelerometer. The accelerometer is a sensor that detects the orientation and movement of the mobile device by measuring the acceleration forces acting on it. The accelerometer allows the screen to rotate automatically according to the position and angle of the device. If the accelerometer is damaged or malfunctioning, the screen may not rotate properly or at all, even if the settings are correctly applied. LCD stands for Liquid Crystal Display and is a type of display that uses liquid crystals and backlight to produce images on the screen. LCD is not related to the screen rotation feature but to the quality and brightness of the display. Battery is a component that provides power to the mobile device by storing and releasing electrical energy. Battery is not related to the screen rotation feature but to the battery life and performance of the device. Digitizer is a component that converts touch inputs into digital signals that can be processed by the mobile device. Digitizer is not related to the screen rotation feature but to the touch sensitivity and accuracy of the display. References: CompTIA A+ Core 2 (220-1002) Certification Exam Objectives Version 4.0, Domain 1.5

The Payment Card Industry Data Security Standard (PCI DSS) is a set of security standards designed to ensure that ALL companies that accept, process, store or transmit credit card information maintain a secure environment.