Comprehensive and Detailed Explanation From Exact Extract:
Badge readers are electronic access control systems that require authorized users to scan a badge (e.g., RFID or magnetic strip cards) to gain access to restricted physical locations. These systems typically log all access attempts-successful or denied-providing both detection and recording of access events.
A). Bollards are physical barriers to prevent vehicle access.
B). Video surveillance can record access visually but does not track identity unless integrated with access control systems.
D). A fence restricts access but doesn't detect or record who entered.
Reference:
CompTIA A+ 220-1102 Objective 2.4: Compare and contrast physical security measures.
Study Guide Section: Physical access controls (e.g., badge readers, mantraps)

Removing users from thelocal admin groupprevents them from installing unauthorized software.
FromQuentin Docter - Complete Study Guide:
"Local admin privileges allow users to install unauthorized apps. Removing them from this group restricts installations and helps prevent malware." .

Comprehensive and Detailed Explanation From Exact Extract:
Remote wipeis a mobile device management (MDM) feature that allows administrators to erase data remotely if a device is lost or stolen, preventing unauthorized access to corporate or personal information.
FromQuentin Docter - CompTIA A+ Complete Study Guide:
"Remote wipe features enable a device to be cleared of all sensitive data if it is lost or stolen. This is one of the most effective ways to prevent unauthorized access to corporate resources."

Comprehensive and Detailed Explanation From Exact Extract:
Operating systems periodically reach a status known as "end of life" (EOL), at which point the developer (e.
g., Microsoft, Apple) ceases to provide security updates, patches, or technical support. When this happens, the OS becomes vulnerable and non-compliant with security best practices, which is why organizations typically receive advance notifications from vendors or support teams.
A: Manufacturer support expiration only applies to hardware, not OS patching.
C: Security software may be upgraded or removed, but that does not affect patching the OS itself.
D: The release of a new version doesn't automatically stop updates for the current version.
Reference:
CompTIA A+ 220-1102 Objective 1.3: Given a scenario, use appropriate Microsoft operating system features and tools.
Study Guide Section: OS lifecycle management and vendor support phases (e.g., EOL)

Comprehensive and Detailed Explanation From Exact Extract:
VPN clients often create virtual network adapters. If the software wasn't uninstalled properly or crashed during install, leftover (often hidden) virtual adapters can prevent reinstallation. The proper solution is to delete hidden network adapters using Device Manager (with "Show hidden devices" enabled).
A: OS updates won't fix a leftover driver or adapter issue.
B: Mapping an adapter to the software is not a standard or viable solution.
C: Firmware updates apply to physical adapters, not virtual VPN adapters.
Reference:
CompTIA A+ 220-1102 Objective 3.1: Troubleshoot common Windows OS and network issues.
Study Guide Section: Troubleshooting network adapter conflicts and VPN client errors