Multiple Choice Questions & Answers on IOT Protocol

Multiple Choice Questions & Answers on I2C Protocol

1. All operating modes work under ____________

a) 11 kbit/s

b) 100 kbit/s

c) 15 kbit/s

d) 150 kbit/s

Answer: 100 kbit/s

2. Typical voltages used are ___________

a) 5v

b) 3.3v

c) 5v or 3.3v

d) 2.5v

Answer: 5v or 3.3v

3. Two wire interface is also called as _________

a) UART

b) SPI

c) I2C

d) USART

Answer: I2C

4. Inter Integrated Circuit is a _____________

a) Single master, single slave

b) Multi master, single slave

c) Single master, multi slave

d) Multi master, multi slave

Answer: Multi master, multi slave

5. Master transmits means _________

a) Master node is sending data to a slave

b) Master node is receiving data from slave

c) Slave node is transmitting data to master

d) Slave node is sending data to master

Answer: Master node is sending data to a slave

6. SDA is having a ____________transition when the clock line SCL is high.

a) high to low

b) low to high

c) low to low

d) high to high

Answer: high to low

7. What is the speed for fast mode?

a) 100 kbit/s

b) 400 kbit/s

c) 150 kbit/s

d) 200 kbit/s

Answer: 400 kbit/s

8. What is the speed of I2C bus?

a) 100 kbits/s

b) 10 kbits/s

c) 75 kbits/s

d) 100 kbits/s and 10 kbits/s

Answer: 100 kbits/s and 10 kbits/s

9. What is the speed for fast mode?

a) 100 kbit/s

b) 3.4 Mbit/s

c) 150 kbit/s

d) 200 kbit/s

Answer: 3.4 Mbit/s

10. How many types of addressing structures are there in I2C?

a) 4 types

b) 3 types

c) 2 types

d) 5 types

Answer: 2 types

11. Which is the I2C messaging example?

a) 24c32 EPROM

b) 24c32 EEPROM

c) 24c33 EEPROM

d) 24c33 EPROM

Answer: 24c32 EEPROM

12. Which mode is highly compatible and simply tightens?

a) Fast mode

b) High speed mode

c) Ultra fast mode

d) Both fast and high speed mode

Answer: Fast mode

13. Who sends the start bit?

a) Master receive

b) Master transmit

c) Slave transmit

d) Slave receive

Answer: Master transmit

14. Are pull up registers required in I2C?

a) True

b) False

Answer: True

15. I2c will address large number of slave devices.

a) True

b) False

Answer: True

Multiple Choice Questions & Answers on MQTT Protocol

1. Full form of MQTT _____

a) Message Queuing Telemetry Transport

b) Message Queuing Telegram Transport

c) Message Queue Telegram Transport

d) Message Queue Telemetry Transport

Answer: Message Queuing Telemetry Transport

2. MQTT is mainly used for __________

a) M2M communication

b) Device communication

c) Internet communication

d) Wireless communication

Answer: M2M communication

3. Standard ports of MQTT are __________

a) I2C

b) SSL

c) USART

d) TCP/IP

Answer: TCP/IP

4. MQTT is _________ oriented.

a) Data

b) Message

c) Network

d) Device

Answer: Message

5. URI and content type support is which protocol feature?

a) SPI

b) UDP

c) HTTP

d) CoAP

Answer: CoAP

6. Which is an open standard?

a) CoAP

b) MQTT

c) XMPP

d) HTTP

Answer: MQTT

7. Who created MQTT?

a) Robert Cailliau

b) Tim Berners-Lee

c) Andy Stanford-Clark

d) Vint Cerf

Answer: Andy Stanford-Clark

8. Request field is present in which message format?

a) Request message

b) Response message

c) Both request and response

d) Neither request nor response

Answer: Request message

9. What are the key components of a M2M system?

a) Vortex DDS

b) Smart Homes

c) Sensors and Wi-Fi

d) Protocols

Answer: Sensors and Wi-Fi

10. Does MQTT support security.

a) True

b) False

Answer: True

 

Multiple Choice Questions & Answers on HTTP Protocol

1. A request from client is basically made of ______

a) Method

b) Task

c) Event

d) Signal

Answer: Method

2. Does HTTP protocol have _________ handshakes.

a) 2 way

b) 1 way

c) 3 way

d) 5 way

Answer: 3 way

3. Response is made up of a ________ status code.

a) two-digit

b) three-digit

c) five-digit

d) six-digit

Answer: three-digit

4. WOT reduces ________ of HTTP.

a) Overrun

b) Overhead

c) Overload

d) Load

Answer: Overhead

5. How many messages will HTTP will send per hour?

a) 1,708

b) 160,278

c) 3,628

d) 263,314

Answer: 1,708

6. How many messages will HQTTP will send in 1024?

a) All

b) 256

c) 240

d) 514

Answer: 240

7. Which protocol provides server push?

a) SPI

b) MQTT

c) CoAP

d) HTTP

Answer: HTTP

8. How many types of message formats are there in HTTP protocol?

a) 4 types

b) 3 types

c) 2 types

d) 5 types

Answer: 2 types

9. What does HTTP do?

a) Enables network resources and reduces perception of latency

b) Reduces perception of latency and allows multiple concurrency exchange

c) Allows multiple concurrent exchange and enables network resources

d) Enables network resources and reduces perception of latency and Allows multiple concurrent exchange

Answer: Enables network resources and reduces perception of latency and Allows multiple concurrent exchange

10. HTTP allows which response?

a) Multiplexing

b) Serial

c) Coherent

d) Binary

Answer: Multiplexing

11. Statue line is present in which message format?

a) Request message

b) Response message

c) Both request and response

d) Neither request nor response

Answer: Response message

12. HTTP expands?

a) HyperText Transfer Protocol

b) HyperTerminal Transfer Protocol

c) HyperText Terminal Protocol

d) HyperTerminal Text Protocol

Answer: HyperText Transfer Protocol

13. Request field is present in which message format?

a) Request message

b) Response message

c) Both request and response

d) Neither request nor response

Answer: Request message

14. Does HTTP has pipelining.

a) True

b) False

Answer: True

15. Does HTTP protocol take more power.

a) True

b) False

Answer: True

Multiple Choice Questions & Answers on UART Protocol

1. UART is similar to _________

a) SPI protocol

b) I2C protocol

c) HTTP protocol

d) MQTT protocol

Answer: I2C protocol

2. Communication in UART is ___________

a) Only simple

b) Only duplex

c) Only full duplex

d) Simplex, half duplex, full duplex

Answer: Simplex, half duplex, full duplex

3. The term break derives from ___________ signaling.

a) Current loop

b) Voltage loop

c) Power loop

d) Current and Power loop

Answer: Current loop

4. A __________ occurs when the receiver input is at the space level.

a) Overrun error

b) Underrun error

c) Framing error

d) Break condition

Answer: Break condition

5. What is WD1402A?

a) SPI

b) USART

c) SPIUART

d) I2C

Answer: SPIUART

6. GPS module like SIM900/800 uses which protocol?

a) UART protocol

b) USART protocol

c) SPI protocol

d) I2C protocol

Answer: UART protocol

7. What is the speed of the 8250 UART?

a) 4800bits/sec

b) 1200bits/sec

c) 12000bit/sec

d) 9600bits/sec

Answer: 9600bits/sec

8. Which error occurs when the parity of the number of 1 bit disagrees with that specified by the parity bit?

a) Overrun error

b) Underrun error

c) Framing error

d) Parity error

Answer: Parity error

9. Which error occurs when UART transmitter has completed sending a character and the transmit buffer is empty?

a) Overrun error

b) Underrun error

c) Framing error

d) Break condition

Answer: Underrun error

10. What does UART contain?

a) Parallel register

b) Shift register

c) Clock

d) Parallel shift register

Answer: Shift register

11. Finger print sensor uses which interface?

a) USART protocol

b) UART protocol

c) SPI protocol

d) I2C protocol

Answer: UART protocol

12. Which error occurs when the receiver can’t process the character?

a) Overrun error

b) Underrun error

c) Framing error

d) Break condition

Answer: Overrun error

13. Which error occurs when the designated start and stop bits are not found?

a) Overrun error

b) Underrun error

c) Framing error

d) Break condition

Answer: Framing error

14. RS232 is used for long range wired communication.

a) True

b) False

Answer: True

15. Start bit of UART is logic high.

a) True

b) False

Answer: False

Multiple Choice Questions & Answers on USART Protocol

1. The secondary implementation uses a fixed second clock divided which is divided by ______________

a) 4

b) 8

c) 32

d) 16

Answer: 16

2. The USART module supports ________ multiprocessor communication modes when the asynchronous mode is used.

a) one

b) two

c) three

d) five

Answer: two

3. HDLC stands for ___________

a) High level Data Link Control

b) High level Data Level Control

c) High level Data Link Coordinator

d) High level Data Link Commutator

Answer: High level Data Link Control

4. SDLC stands for ___________

a) Synchronous Data Link Control

b) Synchronous Data Level Control

c) Synchronous Data Level Coordinator

d) Synchronous Data Link Coordinator

Answer: Synchronous Data Link Control

5. BSC stands for ____________

a) Binary Service Communication

b) Bandwidth Synchronous Communication

c) Binary Synchronous Communication

d) Bandwidth Service Communication

Answer: Binary Synchronous Communication

6. STR stands for___________

a) Synchronous Transmit Rate

b) Synchronous Target Rate

c) Synchronous Target Receive

d) Synchronous Transmit Receive

Answer: Synchronous Transmit Receive

7. In synchronous operation characters must be provided on time if not ______ error occurs.

a) Overrun error

b) Underrun error

c) Framing error

d) Parity error

Answer: Underrun error

8. How many asynchronous multiprocessor protocols are present?

a) 4

b) 3

c) 2

d) 5

Answer: 2

9. What is the protocol used by USART?

a) RS232

b) RS232C

c) RS485

d) RS422

Answer: RS232C

10. What is the timing of X?

a) 1/32 to 1/64 times of BRCKL

b) 1/42 to 1/63 times of BRCKL

c) 1/32 to 1/63 times of BRCKL

d) 1/32 to 1/56 times of BRCKL

Answer: 1/32 to 1/63 times of BRCKL

11. Which of the following needs a clock?

a) Only Asynchronous

b) Only synchronous

c) Both synchronous and Asynchronous

d) Sometimes Synchronous

Answer: Only synchronous

12. Which bit in control register defines the address bit or idle line multiprocessor protocol mode?

a) MM

b) URXWIE

c) URXIE

d) RXWake

Answer: MM

13. During receiving operation what does URXD have?

a) Positive edge

b) Negative edge

c) Level edge

d) Either raising or falling edge

Answer: Positive edge

14. In idle line multiprocessor mode, a precise idle period can be generated to create efficient address character identifiers.

a) True

b) False

Answer: True

15. USART provides a synchronous mode that is not in UART?

a) True

b) False

Answer: True

Multiple Choice Questions & Answers on XMPP Protocol

1. XMPP supports __________

a) Structured data

b) Foundation

c) Federation

d) Jabber ID

Answer: Federation

2. XMPP implementation uses ________

a) CoAP

b) Gaming

c) Email

d) Polling

Answer: Polling

3. XMPP Full form is ________

a) Extensible Messaging and Presence Protocol

b) Extensible Module and presence protocol

c) Extensible Messaging and Presence Protocol

d) Extensible Messaging and Presence Protocol

Answer: Extensible Messaging and Presence Protocol

4. SIP stands for ___________

a) Session Initiation Protocol

b) Session Internet Protocol

c) Simple Initiation Protocol

d) Session Internet Protocol

Answer: Session Initiation Protocol

5. The architecture of the XMPP network is similar to __________

a) Chat box

b) Web browser

c) Gaming

d) Email

Answer: Email

6. IRC stands for __________

a) Internet Reduce Chat

b) Interconnection Relay Chat

c) Internet Relay Chat

d) Interconnect Reduce Chat

Answer: Internet Relay Chat

7. In XMPP In band binary data format is __________

a) High

b) Very high

c) Limited

d) Ultra high

Answer: Limited

8. XMPP creates _________ identity.

a) device

b) email

c) message

d) data

Answer: device

9. XMPP uses ________ architecture.

a) Decentralized client-server

b) Centralized client-server

c) Message

d) Public/subscriber

Answer: Decentralized client-server

10. Which XMPP core describes client server messaging?

a) RFC 6122

b) RFC 4854

c) RFC 6120

d) RFC 3923

Answer: RFC 6120

11. Which protocol has a quality of service?

a) XMPP

b) HTTP

c) CoAP

d) MQTT

Answer: XMPP

12. XMPP is used for streaming which type of elements?

a) XPL

b) XML

c) XHL

d) MPL

Answer: XML

13. The original transport protocol for XMPP.

a) FCP

b) TCP

c) MCP

d) HCP

Answer: TCP

14. Does XMPP have text based communication.

a) True

b) False

Answer: False

15. XMPP feature such as federation across domains used to implement the Internet of Things.

a) True

b) False

Answer: True

Multiple Choice Questions & Answers on CoAP Protocol

1. The core of the protocol is specified in _________

a) RFC 7254

b) RFC 7252

c) RFC 7452

d) RFC 7524

Answer: RFC 7252

2. LTP stands for _________

a) Lean Transducer Protocol

b) Lean Transport Protocol

c) Layer Transport Protocol

d) Layer Transducer Protocol

Answer: Lean Transport Protocol

3. HART stands for_________

a) Highway Addressable Remote Transducer

b) High Addressable Remote Transducer

c) High Application Remote Transducer

d) Highway Application Remote Transducer

Answer: Highway Addressable Remote Transducer

4. CoAP is specialized in ___________

a) Internet applications

b) Device applications

c) Wireless applications

d) Wired applications

Answer: Internet applications

5. CoAP is a specialized _________ protocol.

a) Web Transfer

b) Power

c) Application

d) Resource

Answer: Web Transfer

6. What is the RAM and ROM size in CoAP?

a) 100 KiB of RAM and 10 KiB of ROM

b) 10 KiB of RAM and 100 KiB of ROM

c) 10 KiB of RAM and 250 KiB of ROM

d) 250 KiB of RAM and 10 KiB of ROM

Answer: 10 KiB of RAM and 100 KiB of ROM

7. CoAP provides which of the following requirements?

a) Multicast support and simplicity

b) Low overhead and multicast support

c) Simplicity and low overhead

d) Multicast support, Low over head, and simplicity

Answer: Multicast support, Low over head, and simplicity

8. Which layer is CoAP?

a) Control layer

b) Transport layer

c) Service layer

d) Application layer

Answer: Service layer

9. URI and content type support is which protocol feature?

a) Http

b) UDP

c) CoAP

d) SPI

Answer: CoAP

10. Will CoAP connects to the internet.

a) True

b) False

Answer: True

11. Which is an open standard?

a) HTTP

b) MQTT

c) XMPP

d) CoAP

Answer: CoAP

12. Do CoAP has memory?

a) True

b) False

Answer: True

13. CoAP feels very much like HTTP.

a) True

b) False

Answer: True

14. CoAP is designed for use between devices on the same constrained network.

a) True

b) False

Answer: True

15. CoAP does not provide any security.

a) True

b) False

Answer: False

Multiple Choice Questions & Answers on SPI Protocol

1. MOSI means __________

a) Line for master to send data to the slave

b) Line for the slave to send data to the master

c) Line for the clock signal

d) Line for the master to select which slave to send data to

Answer: Line for master to send data to the slave

2. SMBUS stands for ___________

a) Serial Memory Bus

b) Serial Management Bus

c) System Management Bus

d) System Memory Bus

Answer: System Management Bus

3. MISO means _________

a) Line for master to send data to the slave

b) Line for the slave to send data to the master

c) Line for the clock signal

d) Line for the master to select which slave to send data to

Answer: Line for the slave to send data to the master

4. SPI device communicates in _________

a) Simplex

b) Half duplex

c) Full duplex

d) Both half and full duplex

Answer: Full duplex

5. __________ is a predecessor of SPI.

a) Queued SPI

b) Microwire

c) Microwire/plus

d) Quad SPI

Answer: Microwire

6. How many logic signals are there in SPI?

a) 5 signals

b) 6 signals

c) 4 signals

d) 7 signals

Answer: 5 signals

7. SPI uses how many lines?

a) 4 lines

b) 1 line

c) 3 lines

d) 2 lines

Answer: 2 lines

8. Secure digital card application uses which protocol?

a) UART

b) SPI

c) I2C

d) USART

Answer: SPI

9. Which has a half duplex communication?

a) Queued SPI

b) Microwire

c) Microwire/plus

d) Quad SPI

Answer: Microwire

10. Which of the following is an advantage of SPI?

a) No start and stop bits

b) Use 4 wires

c) Allows for single master

d) Error checking is not present

Answer: No start and stop bits

11. Which of the following is the type of SPI controller?

a) Queued SPI

b) Microwire

c) Microwire/plus

d) Quad SPI

Answer: Queued SPI

12. Which of the following is the disadvantage in SPI?

a) Full duplex communication

b) Push pull drivers

c) Unidirectional signals

d) More pins

Answer: More pins

13. Do SPI have/has a single master?

a) True

b) False

Answer: True

14. Do SPI have internal flash?

a) True

b) False

Answer: True

15. SPI is described as Asynchronous serial interface.

a) True

b) False

Answer: False