Comprehensive and Detailed Explanation From Exact Extract:
Videoconferencingplatforms allow real-time face-to-face communication and are ideal for collaborative training sessions involving remote employees.
FromQuentin Docter - CompTIA A+ Complete Study Guide:
"Videoconferencing tools such as Zoom or Microsoft Teams are specifically designed for real-time communication and training, making them ideal for executive or large-group meetings."

Comprehensive and Detailed Explanation From Exact Extract:
Virtualization settings are typically found within the BIOS/UEFI firmware configuration. To prevent unauthorized users from changing these settings, the technician should set a BIOS password. This ensures only administrators with the password can access or modify BIOS settings, including virtualization support.
B). The guest account is a user-level feature in Windows and doesn't control BIOS access.
C). A screen lock prevents casual access to the desktop but doesn't protect firmware settings.
D). AutoRun controls how media and devices behave when inserted - unrelated to BIOS security.
Reference:
CompTIA A+ 220-1102 Objective 2.2: Compare and contrast security measures and administrative controls.
Study Guide Section: BIOS/UEFI settings protection - password implementation
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Comprehensive and Detailed Explanation From Exact Extract:
Disk optimization tools can sometimes corrupt theMaster Boot Record (MBR). If BIOS sees the drive but can't boot, repairing the MBR using installation media is the correct next step.
FromAll-in-One Exam Guide:
"When BIOS recognizes the drive but no OS is found, the issue is often with the boot record. Use installation media to access recovery tools and repair the MBR or boot loader."

Comprehensive and Detailed Explanation From Exact Extract:
A: .bat file (batch file) is a script file in DOS, OS/2, and Microsoft Windows. It contains a series of commands that are executed by the command-line interpreter. In Windows environments, batch files are commonly used to automate log-in tasks, such as mapping network drives, launching applications, or setting environment variables during the user's logon process.
B: .sh is a shell script used in Linux/Unix environments.
C: .py is a Python script, which can be used for automation but is not commonly run directly at user logon in standard Windows environments.
D: .js is JavaScript, used mainly in web development and not for system-level scripting in Windows logon automation.
Reference:
CompTIA A+ 220-1102 Objective 1.3: Use appropriate Microsoft operating system features and tools.
Study Guide Section: Scripting basics and file types for automation - .bat for Windows

Comprehensive and Detailed Explanation From Exact Extract:
When an OS reaches its end of life (EOL), it no longer receives updates or support, including critical security patches.
From the Quentin Docter Study Guide:
"End-of-life means the manufacturer no longer supports the OS with updates or security patches, which exposes systems to vulnerabilities unless upgraded".
All-in-One Exam Guide adds:
"End-of-life notifications serve as a final warning that continued use of the OS will be insecure and unsupported. It's crucial for administrators to plan migration".