RS232

Embedded System

This set of Embedded Systems Multiple Choice Questions & Answers (MCQs) focuses on “RS232”.

1. Which of the following can be used for long distance communication?
a) I2C
b) Parallel port
c) SPI
d) RS232

2. Which of the following can affect the long distance communication?
a) clock
b) resistor
c) inductor
d) capacitor

3. Which are the serial ports of the IBM PC?
a) COM1
b) COM4 and COM1
c) COM1 and COM2
d) COM3

4. Which of the following can provide hardware handshaking?
a) RS232
b) Parallel port
c) Counter
d) Timer

5. Which of the following have an asynchronous data transmission?
a) SPI
b) RS232
c) Parallel port
d) I2C

6. How many areas does the serial interface have?
a) 1
b) 3
c) 2
d) 4

7. The RS232 is also known as
a) UART
b) SPI
c) Physical interface
d) Electrical interface

8. How much voltage does the MC1489 can take?
a) 12V
b) 5V
c) 3.3V
d) 2.2V

9. Which of the following is not a serial protocol?
a) SPI
b) I2C
c) Serial port
d) RS232

10. Which of the following is an ideal interface for LCD controllers?
a) SPI
b) parallel port
c) Serial port
d) M-Bus

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