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Things and Connections Set-1

Leave a Comment / O Level Tests / By brcinstitute111@gmail.com

Instruction:-

Number of Questions : 25

Total Marks : 25

Each question carry 1 Marks.

No negative marking

Results

#1. Which protocol is designed for low-power devices in IoT applications?

HTTP

MQTT

FTP

POP3

#2. What is the primary function of a feedback loop in a real-time system?

To collect data

To process data

To adjust system behaviour based on output

To store data

#3. Which of the following is a characteristic of ZigBee?

High data rate

Long-range communication

Low power consumption

High cost

#4. Which layer of the OSI model is responsible for data encryption and decryption?

Transport

Network

Presentation

Session

#5. What is the primary function of the Data Link layer in the OSI model?

Routing

Error detection and correction

Data encryption

Data compression

#6. Which protocol is commonly used for secure communication over the internet?

HTTP

FTP

HTTPS

SMTP

#7. Which of the following is a characteristic of TCP/IP?

Connectionless

Reliable data transfer

No error detection

No flow control

#8. Which protocol is used for sending emails?

SMTP

FTP

HTTP

SNMP

#9. Which of the following is a wireless communication technology used in IoT?

ZigBee

Ethernet

USB

VGA

#10. Which protocol is designed for low-power, low-bandwidth communication in IoT devices?

HTTP

MQTT

FTP

POP3

#11. What does the acronym CoAP stand for?

Common Application Protocol

Constrained Application Protocol

Communication Application Protocol

Connected Application Protocol

#12. Which protocol is used for transferring files over the internet?

HTTP

FTP

SMTP

SNMP

#13. Which of the following is a characteristic of Bluetooth Low Energy (BLE)?

High power consumption

Short-range communication

High data transfer rate

Long-range communication

#14. What is a real-time system?

A system that processes data after a delay

A system that processes data within a specified time frame

A system that processes data without any time constraints

A system that does not process data

#15. Which of the following is an example of a real-time system?

Weather forecasting

Online shopping

Air traffic control

Email service

#16. What is the purpose of a feedback loop in a system?

To increase system complexity

To reduce system efficiency

To maintain system stability

To eliminate system errors

#17. Which of the following is an example of a feedback loop in a thermostat?

The thermostat turns on the heater when the room temperature drops below a set point

The thermostat displays the current room temperature

The thermostat records the highest room temperature

The thermostat sends an email notification

#18. What is the primary function of a thermostat in a heating system?

To monitor fuel levels

To regulate room temperature

To control water flow

To measure humidity

#19. Which of the following is a characteristic of an open-loop system?

Feedback is used to control the system

Output is compared with input

No feedback is used

System is always stable

#20. Which of the following is an example of an open-loop system?

Washing machine

Air conditioner

Fan with a thermostat

Cruise control in a car

#21. What is the purpose of a PID controller in a feedback system?

To increase system instability

To reduce system response time

To maintain desired output by adjusting system inputs

To eliminate system errors

#22. Which component is commonly used in feedback systems to measure output?

Actuator

Sensor

Controller

Display

#23. Which of the following is an example of a closed-loop system?

Fan with a thermostat

Washing machine

Microwave oven

Electric kettle without an automatic shut-off

#24. Which sensor detects the presence of an object?

Temperature sensor

Proximity sensor

Pressure sensor

Light sensor

#25. A smart bulb that turns on automatically when a person enters the room uses:

Closed-loop system

Open-loop system

Manual control

Feedback-less system

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Results

#1. Which protocol is designed for low-power devices in IoT applications?

#2. What is the primary function of a feedback loop in a real-time system?

#3. Which of the following is a characteristic of ZigBee?

#4. Which layer of the OSI model is responsible for data encryption and decryption?

#5. What is the primary function of the Data Link layer in the OSI model?

#6. Which protocol is commonly used for secure communication over the internet?

#7. Which of the following is a characteristic of TCP/IP?

#8. Which protocol is used for sending emails?

#9. Which of the following is a wireless communication technology used in IoT?

#10. Which protocol is designed for low-power, low-bandwidth communication in IoT devices?

#11. What does the acronym CoAP stand for?

#12. Which protocol is used for transferring files over the internet?

#13. Which of the following is a characteristic of Bluetooth Low Energy (BLE)?

#14. What is a real-time system?

#15. Which of the following is an example of a real-time system?

#16. What is the purpose of a feedback loop in a system?

#17. Which of the following is an example of a feedback loop in a thermostat?

#18. What is the primary function of a thermostat in a heating system?

#19. Which of the following is a characteristic of an open-loop system?

#20. Which of the following is an example of an open-loop system?

#21. What is the purpose of a PID controller in a feedback system?

#22. Which component is commonly used in feedback systems to measure output?

#23. Which of the following is an example of a closed-loop system?

#24. Which sensor detects the presence of an object?

#25. A smart bulb that turns on automatically when a person enters the room uses:

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