One of the most common causes for performance degradation on smartphones isstorage or memory overloaddue to excessive apps.Uninstalling unused appsis a basic but effective first diagnostic step.
FromTravis Everett - All-in-One Exam Guide:
"Start troubleshooting sluggish smartphones by clearing unused apps and files before performing advanced diagnostics or resets."

The correct answer is D. Internal wiki, because an internal wiki is specifically designed to store, maintain, and centrally manage organizational knowledge, including deployment procedures, configuration standards, and troubleshooting documentation. Large-scale software deployments require accurate, up-to-date, and version-controlled instructions that can be accessed by multiple technicians.
According to the Quentin Docter - CompTIA A+ Complete Study Guide, organizations commonly use internal knowledge bases or wikis to document standard operating procedures (SOPs), deployment guides, and escalation paths. These platforms allow content to be updated quickly as procedures evolve, which is essential for complex deployments.
The Travis Everett & Andrew Hutz - CompTIA A+ All-in-One Exam Guide emphasizes that internal wikis support collaboration and consistency. Unlike emails or files stored on individual systems, a wiki provides a single source of truth, reducing the risk of technicians following outdated or incorrect instructions.
The Mike Meyers / Mark Soper Lab Manual further explains that while file servers may store installation files and emails may contain announcements, neither is suitable for maintaining structured, searchable deployment documentation. A user's desktop is never an appropriate location for organizational procedures.
Because large-scale deployments require centralized, standardized, and continuously updated documentation, the most appropriate reference location is an internal wiki, making D the correct answer.

Memory usage is critically high, suggesting many applications or background processes. Closing unnecessary programs will immediately free up RAM.
FromTravis Everett - All-in-One Exam Guide:
"High memory usage with moderate CPU load usually means too many applications are open. Close unnecessary apps or use Task Manager to end processes."

The correct answer is C. RDP (Remote Desktop Protocol), because RDP is the default remote access technology for Windows servers. It allows technicians to remotely connect to the graphical desktop environment of a Windows server to verify services, logs, and system status.
According to the Quentin Docter - CompTIA A+ Complete Study Guide, RDP is built into Windows operating systems and is commonly used by administrators to manage Windows servers and workstations. It provides full access to the desktop, making it ideal for checking whether services such as IIS (Internet Information Services) are running properly.
The Travis Everett & Andrew Hutz - All-in-One Exam Guide explains that while SSH is commonly used for Linux and network devices, Windows servers typically rely on RDP for administrative access. VNC is a third-party remote desktop solution and is not enabled by default on Windows systems.
The Mike Meyers / Mark Soper Lab Manual reinforces that SPICE is primarily used in virtualized environments and is not a standard Windows remote access tool.
Because the technician needs to verify a Windows web server's operational status using a built-in method, RDP is the most appropriate and likely technology, making C the correct answer.

When a Windows service suddenly stops and then fails to start manually, one of the first places to confirm why it cannot start is the service logon context. A very common root cause is that the account configured on the service cannot authenticate anymore-often because the password changed or the account is locked.
Quentin Docter notes that if the service fails due to misconfiguration, "the most likely cause is the user account the service is configured to start with," and you should ensure "the user account is not locked out." This aligns with standard service troubleshooting: check Event Viewer (Service Control Manager events) for login failures, then validate the service's Log On tab configuration and the account state.
The All-in-One guide also reinforces validating services via the Services console and correcting service settings when services fail to start.
Therefore, the best cause given the options is that the service account is locked out (C).