Hands-On RTOS with Microcontrollers

Chapter 9

1. A queue can hold any data type, thanks to the underlying void* input parameter.
2. A task waiting to send data to a queue is placed into the blocked state (suspended if portMAX_DELAY was specified).

3. There were three considerations mentioned: data ownership of the underlying value, ensuring the correct data type is passed into the queue, and making sure the data stays intact (by not placing it onto a volatile stack).
4. False. Task notifications only store a single uint32_t and allow a single task with a known task handle to be unblocked. Queues are capable of storing any datatype and can be used across multiple arbitrary tasks.
5. False. Task notifications only store a single uint32_t.  
6. Speed and RAM efficiency.