Default Apps should be used to ensure all PDF files open in Adobe Reader1

When a workstation has not received the latest policy changes, the gpupdate command is used to manually apply the latest group policies from the domain controller.
* Option A: sfc /scannowThis command is used to scan and repair corrupted system files, not to update group policies.
* Option B: gpupdate /forceThis command forces the workstation to reapply all group policies, ensuring that the latest policies are applied immediately.
* Option C: chkdsk /yThis command checks the integrity of the file system and fixes logical file system errors, not to update group policies.
* Option D: xcopy /ZpThis command is used for copying files and directories, not for updating group policies.
References:
* CompTIA A+ 220-1102 Objective 1.6 (Configure Microsoft Windows networking features on a client
/desktop), particularly managing and applying group policies.

One of the key environmental benefits of using virtualization is the reduction in physical space requirements.
Virtualization allows multiple virtual machines to run on a single physical server, reducing the need for multiple physical servers. This consolidation leads to fewer physical machines, saving space in data centers and reducing the overall physical footprint.
* A. Greater energy consumption is incorrect as virtualization typically leads to reduced energy consumption due to the consolidation of hardware.
* B. Noise pollution can be reduced because fewer physical machines often mean less overall noise.
* D. Fewer maintenance needs is a possible benefit but not directly related to environmental effects like reduced space requirements.
References:
* CompTIA A+ Core 2 (220-1102) Exam Objectives, Section 4.5: Summarizing environmental impacts and local environmental controls, including the benefits of virtualization.

Explanation
The customer's web browser is likely infected by a browser hijacker, which is a type of malware that changes the browser's settings and redirects the user to malicious websites. A browser hijacker can also steal the user's personal data, display unwanted ads, and install more malware on the device. To remove a browser hijacker, the user should first uninstall the browser from the Control Panel, then scan the device with an antivirus or anti-malware program, and finally install a trusted browser from a legitimate source. Deleting the browser cookies and history, resetting the browser settings, or changing the browser default search engine may not be enough to get rid of the browser hijacker, as it may have embedded itself into the system or other browser components.