Wired Communication

What is the primary function of a UART

• Parallel to parallel communication

• Asynchronous serial communication

• Synchronous serial communication

• Data compression

Which of the following is a standard used for serial communication and defines voltage levels for communication?

• I2C

• SPI

• CAN

• RS232

In I2C communication, what is the purpose of the SDA and SCL lines?

• SDA is for clock, and SCL is for data

• SDA and SCL are only used for power transmission

• Both SDA and SCL are used for data

• SDA is for data, and SCL is for clock

How many devices can be connected in an I2C bus using a 7-bit address?

• 120

• 256

• 127

• 1048

Which of the following is NOT true about SPI (Serial Peripheral Interface)?

• It uses separate lines for data and clock

• It is a full-duplex communication protocol

• It supports multiple master devices easily

• It typically uses MOSI, MISO, SCLK, and SS

What is the main advantage of using Daisy Chain topology in SPI communication?

• Enables parallel data transmission

• Reduces the number of Slave Select (SS) lines

• Increases the communication speed

• Uses less power

What is the maximum number of devices that can be connected in an SPI daisy-chain configuration?

• 8

• 2

• 4

• Limited by hardware and signal integrity

What is the major disadvantage of RS232 communication?

• High data transfer speed

• Short-distance communication

• No support for asynchronous communication

• Requires complex hardware

In SPI communication, which signal is used by the master to select a specific slave device?

• MISO

• SCLK

• SS (Slave Select)

• MOSI

What is the purpose of the parity bit in UART communication?

• Increases data transmission speed

• Synchronizes data transfer

• Detects transmission errors

• Identifies the start of a frame