Which operating system is specifically designed for sensor networks?

TinyOS is specifically designed for sensor networks, making it the correct choice. It is an open-source operating system that has been tailored for low-power wireless sensor networks and embedded systems. TinyOS is built with a focus on resource-constrained devices, making it highly efficient in terms of memory usage and processing power. This specialization allows it to handle the unique requirements of networking, such as managing limited bandwidth and energy efficiency, which are critical factors in sensor networks.

Unlike general-purpose operating systems such as Linux and Windows, which are designed for a wide range of applications and typically focus on performance for desktop and server environments, TinyOS offers a lightweight, modular design optimized for the specific challenges faced by sensor networks, such as maintaining long battery life and supporting low data rate communications. FreeRTOS, while also suitable for embedded systems, is not as specifically focused on the needs of sensor networks as TinyOS is. Therefore, TinyOS stands out as the best fit for applications within sensor networks.