A medical clinic recently configured a guest wireless network on the existing router.

•A. Isolate smart devices to their own network segment: Network segmentation using VLANs or separate SSIDs ensures that smart devices (like speakers) are not on the same network as guests, preventing unauthorized control.

•E. Change the default credentials: Many IoT devices (e.g., smart speakers) come with default usernames and passwords. If these are not changed, unauthorized users can easily take control.

•Why not the other options?

•B. Configure IPS: IPS (Intrusion Prevention System) detects threats but cannot block specific guest actions on an IoT device.

•C. Install a new AP: A new access point does not solve the unauthorized control issue.

•D. Set up a syslog server: Helps with logging, but does not prevent unauthorized access.

•F. Configure GRE: Generic Routing Encapsulation (GRE) is used for VPN tunneling, which is irrelevant in this case.