OTA updates are crucial for delivering bug fixes and feature enhancements remotely, ensuring that IoT devices can adapt, improve, and stay secure over time. These updates are typically delivered over the internet, allowing devices to be updated without physical access.

The low latency feature of 5G is critical for remote surgery. Low latency ensures minimal delay in data transmission, which is crucial in surgical procedures where real-time responses are essential. High bandwidth, wide coverage, and energy efficiency are also valuable but have different priorities in this scenario.

For bi-directional communication in IoT, the protocol often recommended due to its low overhead and real-time capabilities is WebSockets. WebSockets provide full-duplex communication channels over a single TCP connection. They are well-suited for scenarios where low latency and real-time data exchange are crucial, making them a popular choice in IoT applications.

With the influx of IoT devices, "Biometric Authentication" has become a prevalent technique to safeguard users' identities. Biometric methods, like fingerprint or facial recognition, offer strong user authentication.

Digital certificates in IoT devices primarily aid in device authentication. These certificates ensure that the device is genuine and authorized to access or exchange data within the network. While data storage and encryption are important, they are not the primary role of digital certificates in IoT.

Secure boot in IoT devices primarily aims to protect the device from unauthorized firmware, ensuring that only trusted code is executed during bootup. This helps safeguard against malicious software and unauthorized access.

GDPR primarily affects IoT devices by imposing strict data protection and privacy requirements. IoT devices often collect and process personal data, making GDPR compliance crucial.

The integration of conductive fabrics in clothing has enabled the development of smart garments in the wearable IoT sector. Conductive fabrics allow for the integration of sensors, microcontrollers, and power sources directly into clothing, enabling features like temperature monitoring, fitness tracking, and communication in the form of smart textiles.

FreeRTOS is a real-time operating system (RTOS) that is commonly used in IoT devices. RTOS is essential for managing tasks with strict timing requirements in IoT applications. Windows 10, Ubuntu, and MacOS are general-purpose operating systems not designed for real-time tasks.

MQTT (Message Queuing Telemetry Transport) is a widely used framework for connecting and managing IoT devices. It provides a lightweight, efficient communication protocol for IoT. CoAP, IoTivity, and AllJoyn are also IoT protocols and frameworks.