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

Comprehensive and Detailed Explanation From Exact Extract:
Mobile OS updates can sometimes cause compatibility issues with specific apps, including corporate email clients. The most likely resolution is to check for and apply an update to the affected application, especially if it hasn't been updated to support the latest OS version.
B). Registering with MDM might be required for access but wouldn't address app crashes due to incompatibility.
C). A third-party client might help, but it's not the best first step if the default app is expected to work.
D). Clearing the cache can help resolve some minor issues, but updating the app directly addresses compatibility concerns.
Reference:
CompTIA A+ 220-1102 Objective 3.3: Troubleshoot mobile OS and application issues.
Study Guide Section: App compatibility and mobile software updates

Comprehensive and Detailed Explanation From Exact Extract:
A synthetic full backup combines the last full backup with subsequent incremental backups to create a new full backup without re-reading data from the source system. This method significantly reduces the backup window and network impact. It is especially useful when traditional full backups are too time-consuming.
A: Changing the backup window only shifts timing, not duration.
B: Incremental weekly backups would lack a proper full recovery point and aren't ideal alone.
C: Storage space isn't the bottleneck in backup speed-it's read/write operations and network load.
Reference:
CompTIA A+ 220-1102 Objective 4.2: Summarize backup and recovery concepts.
Study Guide Section: Backup types - full, incremental, differential, and synthetic backups

Comprehensive and Detailed Explanation From Exact Extract:
Thepowercfg commandis a built-in utility for controlling power settings including hibernation. It can be used in scripts and does not require domain access.
FromQUENTIN DOCTER - COMPTIA A+ COMPLETE study GUIDE:
"The powercfg command provides granular control of power settings, useful for scripting and configuring systems without Group Policy access."

Comprehensive and Detailed Explanation From Exact Extract:
Group Policyis the standard administrative tool for enforcing security and configuration settings across domain-joined systems, including disabling guest accounts.
FromQuentin Docter - CompTIA A+ Study Guide:
"Disabling guest accounts and applying consistent security policies across multiple machines is best achieved through Group Policy on a Windows domain."