Local Users and Groups is a Microsoft Management Console (MMC) snap-in that allows you to manage user accounts or groups on your computer1. If you cannot find it in the MMC console, you can add it manually by following these steps2:
Press Windows key + R to open the Run dialog box, or open the Command Prompt.
Type mmc and hit Enter. This will open a blank MMC console.
Click File and then Add/Remove Snap-in.
In the Add or Remove Snap-ins window, select Local Users and Groups from the Available snap-ins list, and click Add.
In the Select Computer window, choose Local computer or Another computer, depending on which computer you want to manage, and click Finish.
Click OK to close the Add or Remove Snap-ins window. You should now see Local Users and Groups in the MMC console.

Smart card and password is an example of two-factor authentication (2FA), not multi-factor authentication (MFA). MFA requires two or more authentication factors. Smart card and password is an example of two-factor authentication (2FA)2

Proper ventilation is a factor that can extend the life of a device by preventing overheating and thermal damage to the device's components. Proper ventilation means ensuring that there is enough airflow around and inside the device to dissipate heat and maintain a suitable temperature for optimal performance. Proper ventilation can be achieved by using fans, heat sinks, vents, or liquid cooling systems, as well as avoiding placing the device near heat sources or in enclosed spaces. Battery backup, electrostatic discharge mat, and green disposal are not factors that can extend the life of a device.

Comprehensive and Detailed In-Depth Explanation:
In Windows, when a user changes the network type from private to public, network discovery and file sharing are disabled for security reasons. Public networks are treated as untrusted, and devices on the network are hidden from the user.
* B. The Windows Firewall from on to off - Incorrect. Disabling the firewall does not block network visibility.
* C. The UAC level to its highest level - Incorrect. User Account Control (UAC) settings control administrative privileges, not network visibility.
* D. The file-sharing permissions - Incorrect. File-sharing permissions only affect access to shared folders, not network visibility.
Reference:
CompTIA A+ 220-1102, Objective 1.8 - Windows Networking and Configuration

See the Explanation below:
Explanation:
Click on 802.11 and Select ac

Click on SSID and select CORP
Click on Frequency and select 5GHz
At Wireless Security Mode, Click on Security Mode
Select the WPA2
Ann needs to connect to the BYOD SSID, using 2.4GHZ. The selected security method chose should be WPA PSK, and the password should be set to TotallySecret.