Questions

Let's test our knowledge with the following questions of this chapter:

1. For a UART connection given as 9600, 8N1, which information is not provided?

   a) Baudrate

   b) Parity

   c) The start bit

   d) The stop bit

2. Which one is not true when we compare UART with other serial protocols such as I2C or SPI?

   a) UART is an asynchronous protocol, while others are not.

   b) UART doesn't need a common clock.

   c) UART is peer-to-peer, while others support multiple devices on the same bus.

   d) UART has two different lines for transmit and receive, while others use a single line for data.

3. Which is not true as an I2C and I2S comparison?

   a) I2S is specifically for sound, while I2C is a generic protocol.

   b) They need the same number of pin connections.

   c) I2S uses a channel select signal.

   d) They both have a master clock.

4. In which modes does ESP32 RAM keep existing data without any loss (that is, full RAM retention)?

   a) Modem sleep and light sleep

   b) Light sleep and deep sleep

   c) Deep...