Worksheet-I
Subject: ICTClass:VIIIDate: 28/11/2024
Chapter 1: Introduction to IoT
Multiple Choice Questions (MCQs):
1. What does IoT stand for?
A) Internet of Technology
B) Internet of Things
C) Intelligent Operating Technology
D) Internet of Tablets
Answer: B) Internet of Things
2. Which layer in an IoT system collects data from the environment?
A) Processing Layer
B) Sensor Layer
C) Application Layer
D) Actuator Layer
Answer: B) Sensor Layer
3. Which company is known for investing heavily in IoT research?
A) Coca-Cola
B) Google
C) Starbucks
D) Nike
Answer: B) Google
4. Which device can be an example of an IoT actuator?
A) Thermometer
B) Light bulb
C) Smartphone
D) Digital Camera
Answer: B) Light bulb
5. What is the main purpose of IoT in smart homes?
A) To automate home appliances
B) To reduce internet usage
C) To control lighting manually
D) To increase the size of the house
Answer: A) To automate home appliances
6. Which of the following is NOT a benefit of IoT?
A) Enhancing productivity
B) Increasing manual labor
C) Reducing operational costs
D) Improving safety
Answer: B) Increasing manual labor
7. What type of sensors are used in IoT healthcare for monitoring patients?
A) Sound sensors
B) Smart wearables
C) Pressure gauges
D) Photocopiers
Answer: B) Smart wearables
8. The communication in IoT is primarily based on which network?
A) Ethernet
B) Internet
C) Bluetooth
D) Radio Waves
Answer: B) Internet
9. The ESP32 board is primarily used in IoT projects due to its:
A) High cost
B) Lack of connectivity
C) Built-in Wi-Fi and Bluetooth
D) Old technology
Answer: C) Built-in Wi-Fi and Bluetooth
10. What does the application layer in IoT do?
A) Processes data
B) Collects sensor data
C) Provides a user interface
D) Controls hardware directly
Answer: C) Provides a user interface
Short Answer Questions:
1. What is the full form of IoT?
Answer: Internet of Things
2. Name the four layers of an IoT system.
Answer: Sensor Layer, Processing Layer, Application Layer, Actuator Layer
3. How does IoT benefit the healthcare sector?
Answer: It enables remote monitoring of patients and provides real-time health data through smart
wearables.
4. What are actuators used for in IoT?
Answer: Actuators provide physical responses like turning on a motor or light based on sensor
inputs.
5. List two applications of IoT in daily life.
Answer: Smart homes and Smart vehicles
6. What type of data can a DHT11 sensor collect?
Answer: Temperature and humidity data
7. Which layer of IoT is responsible for processing and sending data to the cloud?
Answer: Processing Layer
8. Give an example of a smart wearable device.
Answer: Smartwatch
9. Why is IoT important for businesses?
Answer: It helps in real-time monitoring, increasing efficiency, and reducing operational costs.
10. How do smart homes save electricity?
Answer: By using IoT to automate lighting and appliances based on occupancy and time.
Chapter 2: ESP32 Board Introduction
Multiple Choice Questions (MCQs):
1. Which company developed the ESP32 board?
A) Intel
B) Espressif Systems
C) Microsoft
D) IBM
Answer: B) Espressif Systems
2. What is the operating voltage of the ESP32?
A) 5V
B) 3.3V
C) 9V
D) 12V
Answer: B) 3.3V
3. Which feature is supported by ESP32 but not by Arduino UNO?
A) Digital I/O Pins
B) Touch Sensors
C) Serial Communication
D) LED Blinking
Answer: B) Touch Sensors
4. How many GPIO pins does the ESP32 have?
A) 14
B) 20
C) 36
D) 40
Answer: C) 36
5. The ESP32 is ideal for IoT projects because of its:
A) High cost
B) Lack of connectivity
C) Low power consumption and built-in Wi-Fi
D) Large physical size
Answer: C) Low power consumption and built-in Wi-Fi
6. Which microcontroller is used in the ESP32?
A) ATmega328P
B) ARM Cortex-M3
C) Tensilica Xtensa LX6
D) Intel Atom
Answer: C) Tensilica Xtensa LX6
7. What is the current consumption of ESP32 in deep sleep mode?
A) 5µA
B) 20mA
C) 80mA
D) 200mA
Answer: A) 5µA
8. ESP32 boards can connect to the internet using:
A) Only Ethernet
B) Wi-Fi and Bluetooth
C) Only Wi-Fi
D) GSM Module
Answer: B) Wi-Fi and Bluetooth
9. Which of the following pins are not recommended for use as inputs or outputs on ESP32?
A) Green Pins
B) Red Pins
C) Yellow Pins
D) Blue Pins
Answer: B) Red Pins
10. What type of sensors are supported by ESP32 for touch input?
A) Capacitive Touch Sensors
B) Pressure Sensors
C) Temperature Sensors
D) Optical Sensors
Answer: A) Capacitive Touch Sensors
Short Answer Questions:
1. What microcontroller does the ESP32 use?
Answer: Tensilica Xtensa LX6
2. How many digital I/O pins are available on the ESP32 board?
Answer: 36 pins
3. Which two communication technologies are integrated into the ESP32?
Answer: Wi-Fi and Bluetooth
4. Name one key advantage of using ESP32 over Arduino UNO.
Answer: It has built-in Wi-Fi and Bluetooth connectivity.
5. What is the power consumption of the ESP32 in deep sleep mode?
Answer: 5µA
6. Why is the ESP32 board preferred for IoT applications?
Answer: It supports low power consumption, Wi-Fi, and Bluetooth, making it suitable for connected
devices.
7. What are the two cores in ESP32 used for?
Answer: They can run independent tasks simultaneously, increasing processing efficiency.
8. How many capacitive touch sensors does ESP32 support?
Answer: Up to 10 touch sensors
9. Which pins on the ESP32 board should be avoided for input/output usage?
Answer: Red pins
10. Can ESP32 be used for home automation? If yes, how?
Answer: Yes, it can control appliances remotely using Wi-Fi.
