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To ensure that Windows 10 laptops can automatically connect to Wi-Fi networks when employees take them home, the appropriate configuration is:

Network and Internet settings: These settings allow users to manage Wi-Fi connections, configure automatic connections to known networks, and manage network profiles.

Go to Settings > Network & Internet > Wi-Fi.

Ensure the option to connect automatically to the home Wi-Fi network is enabled.

Windows Firewall settings: These are used to manage firewall rules and do not control Wi-Fi connectivity.

Devices and Printers: Used for managing connected devices and printers, not for network connections.

Personalization settings: These settings are for customizing the appearance of the Windows interface and do not affect network connections.

When a system administrator discovers a user's PC running slowly with 100% CPU utilization, it often indicates that the system is being used for unauthorized purposes, such as being part of a botnet attack. Here’s why:

Botnet attack: Botnets are networks of computers infected with malware and controlled by an attacker. These infected computers (bots) are often used to carry out tasks like sending spam or participating in Distributed Denial of Service (DDoS) attacks. The high CPU utilization and resource usage indicate that the computer might be performing tasks dictated by the botnet controller.

Firewall activities: While firewall activities can use some resources, they generally do not cause sustained high CPU utilization.

DDoS attack: DDoS attacks target external systems by overwhelming them with traffic. A system participating in a DDoS might have high network usage, but the primary symptom on the user’s PC would be high network activity, not necessarily CPU usage.

Keylogger attack: Keyloggers record keystrokes and generally do not cause high CPU utilization. They are more stealthy and have minimal resource footprints.

Random restarting of an Android phone and the presence of applications not from the standard marketplace strongly suggest the possibility of malware.

Option A: The OS update failedWhile an OS update failure can cause issues, it is less likely to result in random restarts compared to malware.

Option B: The user downloaded malwareMalware is a common cause of erratic behavior, including random restarts, especially when applications are installed from unofficial sources.

Option C: The device is in developer modeDeveloper mode alone does not typically cause random restarts. It may make the device more susceptible to issues if improper apps are installed.

Option D: The over-the-air carrier update failedSimilar to the OS update, this would more likely cause consistent issues rather than random restarts.

Malware is malicious software that can cause damage or harm to a computer system or network4. A technician has verified a computer is infected with malware by observing unusual behavior, such as slow performance, pop-ups, or unwanted ads. The technician isolates the system and updates the anti-malware software to prevent further infection or spread of the malware. The next step is to run repeated remediation scans until the malware is removed. A remediation scan is a scan that detects and removes malware from the system. Running one scan may not be enough to remove all traces of malware, as some malware may hide or regenerate itself.