/UART Mcq unit 2 MCQS HUB ,Sample Test,Sample questions

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Question: 
 The data rate of I2C is ___________

1.1Mbps

2.2Mbps

3.3Mbps

4.4Mbps

Question: 
 What are the applications of a UART?

1.Bluetooth modules

2.GPS units

3.Microcontrollers

4.All of the above

Question: 
 What is the standard form of UCR?

1.UART Control Register

2.USART Common Register

3.USART Control Register

4. None of the above

Question: 
 Which one of the following registers is a most significant byte of a universal asynchronous receiver transmitter baud rate generator value?

1.DLL

2.DLM

3.both (a) and (b)

4.None of These

Question: 
An UART used for _______ access

1.Mainframe

2.Internet

3.both (a) and (b)

4.None of These

Question: 
How many lines does I2C use between multiple slaves and multiple masters?

1.One

2.Two

3.Three

4.Four

Question: 
In a UART, the maximum possible number of devices in a bus is ___________

1.Two

2. Unlimited

3.Four

4.Eight

Question: 
In I2C, the maximum possible number of devices in a bus is _________

1.6

2.4

3.10

4.127

Question: 
In SPI, the maximum possible number of devices in a bus is ___________

1.Unlimited

2.Two

3.Eight

4.Several

Question: 
The associated protocol for serial interface RS-422 is ___________
 UART
 I2C
 SPI

1.UART

2.SPI

3.12C

4.None of These

Question: 
The data rate of an SPI is __________

1.10Mbps

2.25Mbps

3.40Mbps

4.50Kbp

Question: 
The master unit is ______ in UART

1.Variable

2.Fixed

3.Variable or fixed

4.None of These

Question: 
The master unit is ______ in USB 2.0

1. Variable

2.Fixed

3.Variable or fixed

4.None of These

Question: 
The maximum cable length of RS-232 is ___________

1. 1.2km

2.1.5km

3.9km

4.10km

Question: 
The maximum cable length of USB is ______

1.1.2km

2.1.5km

3.9km

4. 30km

Question: 
The maximum distance of a UART is ___________

1.10 m

2.12 m

3.15 m

4.29 m

Question: 
The maximum distance of I2C is ____________

1.1m

2.2m

3.0.5m

4.12m

Question: 
The maximum distance of RS-485 is _________

1. 1.2km

2.15km

3.9km

4.10km

Question: 
The maximum distance of SPI is ___________

1.0.1m

2.12m

3.15m

4.29m

Question: 
The maximum speed of a UART is ___________

1.115Kbps

2.1Kbps

3.115.2Kbps

4.1.2Kbps

Question: 
The maximum speed of an SPI is ___________

1.115Kbps

2.4Mbps

3.115.2Kbps

4.1.2Kbps

Question: 
The maximum speed of I2C is ___________

1.15Kbps

2.4Mbps

3.115.2Kbps

4.1Mbps

Question: 
The maximum speed of RS-485 is ________

1.15Kbps

2.4Mbps

3.115.2Kbps

4.1Mbps

Question: 
The maximum throughput of an Ethernet is _____________

1. 20KB/sec

2.125MB/sec

3.28.8KB/sec

4.10KB/sec

Question: 
The maximum throughput of RS 232 is _____________

1.20KB/sec

2.2KB/sec

3. 28.8KB/sec

4.10KB/sec

Question: 
The product availability of RS-232 is _____________

1.>500

2.<1000

3. >10,000

4.None of these

Question: 
The speed of SCSI is ______

1. 160M bytes/sec

2.1M bytes/sec

3.2M bytes/sec

4.4M bytes/sec

Question: 
The speed of USB is ______

1.12M bit /sec

2.1M bit /sec

3.2M bytes/sec

4.4M bytes/sec

Question: 
The transmitter type of I2C is _______

1.Synchronous

2.Asynchronous

3.Both a and b

4.None of the above

Question: 
The transmitter type of SPI is __________

1.Synchronous

2.Asynchronous

3.Both a and b

4. None of the above

Question: 
The UART 16550A has ____________FIFO buffers

1.2-byte

2.4byte

3.8-byte

4.16-byte

Question: 
The UART transmitter consists of ___________

1. FIFO module

2.Shift register

3.Hold register

4.All of the above

Question: 
What is the standard form of DUDRE?

1.Dual UART Data Register Empty

2.Digital UART Data Register Empty

3.Data UART Data Register Empty

4.None of These

Question: 
What is the standard form of MCR?

1.Modem Control Register

2.Modem Control Receiver

3.Modem Common Register

4.None of These

Question: 
What is the standard form of MDR?

1.Modem Definition Register

2. Mode Definition Receiver

3.Module Data Register

4.None of These

Question: 
What is the standard form of MSR?

1.Modem Status Register

2.Mode Simple Receiver

3.Module Data Register

4.None of These

Question: 
What is the standard form of PCON?

1.Power Control

2.Power Control Receiver

3.Power Control Register

4.None of These

Question: 
What is the standard form of UARTFR?

1.UART Flag Register

2.USART Flag Register

3.UART Register

4.None of These

Question: 
What is the standard form of UBRR?
 
 
 
 None of the above

1.UART Baud Rate Register

2.USART Baud Rate Register

3.USART Baud Register

4.None of the above

Question: 
What is the standard form of UDRE?

1.UART Data Register Empty

2.UART Data Register

3.USART Data Register Empty

4.None of these

Question: 
What is the standard form of USR?

1.UART Serial Register

2.UART Status Register

3.USART Simple Register

4.None of the above

Question: 
Which one of the following is a write-only register?

1. FCR

2.IIR

3.both (a) and (b)

4.None of the above

Question: 
Which one of the following registers is a least significant byte of a universal asynchronous receiver transmitter baud rate generator value?

1.DLL

2.DLM

3.both (a) and (b)

4.None of these

Question: 
Which one of the following scalability is high?

1. I2C

2.UART

3.SPI

4.None of the above

Question: 
Which one of the following scalability is low?

1.UART

2.SPI

3.12C

4.None of the above

Question: 
Which register contains the data to be transmitted?

1.RBR

2.THR

3.FCR

4.None of the above

Question: 
Which register contains the data which is recently received?

1.RBR

2.THR

3.FCR

4.None of These

Question: 
Which register controls the universal asynchronous receiver transmitter frame formatting?

1.RBR

2.THR

3. FCR

4.LCR

Question: 
Which register is used to disable/enable the transmission?

1.TER

2.THR

3.FCR

4.LCR

Question: 
________ are the revision identification registers

1.REVID1

2.REVID2

3.Both A and B

4.None of the above

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