Comprehensive and Detailed Explanation From Exact Extract:

Shreddingphysically destroys the platters, making data recovery virtually impossible. It ' s more effective and accessible than degaussing or low-level formatting.

FromQuentin Docter – CompTIA A+ Complete Study Guide:

“Physical destruction methods like shredding are the most secure options for ensuring data on failed drives cannot be recovered.”

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.”

In macOS, many applications are distributed as application bundles that appear as a single .app file in the Applications folder. Because the app’s executable and supporting resources are contained inside that bundle, uninstalling is often as simple as moving the .app bundle to the Trash. Quentin Docter explains that an APP file ends in .app and is a container holding the executable plus resource files/folders, and he describes the uninstall process as selecting the application in the Applications folder and choosing File → Move to Trash, which removes it from the operating system’s available apps list. The All-in-One guide also states that for most non–App Store macOS apps, removal is typically done by dragging the app to the Trash, with uninstallers only sometimes provided for larger apps. Mike Meyers’ Lab Manual reinforces this: “other software can be removed…by simply dragging the app to the Trash.” By contrast, .msi and .exe are Windows installers, .rpm is a Linux package format, and .pkg is a macOS installer package (not what you trash to uninstall).

The correct answer is A. Use a virtual machine to emulate an older OS , because virtualization is the most reliable method for running legacy applications that are incompatible with modern operating systems or hardware. When a new computer does not meet an application’s requirements—such as OS version, driver support, or system libraries—the issue is typically software compatibility , not system performance.

According to the Quentin Docter – CompTIA A+ Complete Study Guide , virtualization allows technicians to install an older operating system inside a virtual machine (VM) while still using modern hardware. This approach isolates the legacy application in a controlled environment that exactly matches its original requirements, without compromising the security or stability of the host OS.

The Travis Everett & Andrew Hutz – All-in-One Exam Guide explains that virtual machines are a preferred solution when organizations must maintain access to older business-critical software that cannot be updated. Running installers in Safe Mode or increasing swap space does not resolve OS-level incompatibility issues.

The Mike Meyers / Mark Soper Lab Manual further reinforces that compatibility toolkits can help with minor application issues, but they cannot fully emulate missing OS components or deprecated system calls. Virtualization provides complete compatibility by recreating the expected environment.

Therefore, using a virtual machine with an older OS is the most effective and exam-correct solution.

Comprehensive and Detailed Explanation From Exact Extract:

Once a malware incident has been confirmed, the immediate next step is to contain the threat. Quarantining infected systems prevents the malware from spreading to other devices and isolates the malicious code for further analysis or remediation.

B. Educating end users is important but occurs later in the incident response process.

C. Disabling System Restore is part of cleanup, not containment.

D. Updating and scanning should occur after the system is quarantined to prevent further infection or spread.

Comprehensive and Detailed Explanation From Exact Extract:

These symptoms strongly suggest malware activity—likely from the newly installed app. The first action should be torun a malware scanto detect and isolate malicious software.

FromQuentin Docter – CompTIA A+ Study Guide:

“Signs of malware infection include rapid battery drain and overheating. The first step should be a malware scan using trusted mobile antivirus apps.”

Comprehensive and Detailed Explanation From Exact Extract:

If uploading fails only offsite,mobile data limits or restrictionsare the likely cause. Data caps or network management can interfere with uploads.

FromTravis Everett – All-in-One Exam Guide:

“When mobile users experience network issues, always check if the device has reached a data cap or roaming restriction.”