Thẻ ghi nhớ: IOT102_4 | Quizlet

Câu 1: Which Arduino model is most commonly used by beginners due to its simplicity and affordability?

A. Due

B. Uno

C. Esplora

D. LilyPad

B. Uno

Câu 2: On the Arduino Uno, how many analog input pins are available, and how many of the digital input/output pins can be used as PWM outputs?

A. Analog Inputs: 6, PWM Outputs: 6

B. Analog Inputs: 14, PWM Outputs: 14

C. Analog Inputs: 6, PWM Outputs: 14

D. Analog Inputs: 14, PWM Outputs: 6

A. Analog Inputs: 6, PWM Outputs: 6

Câu 3: What is the recommended input voltage for an Arduino Uno?

A. 5-10 V

B. 7-12 V

C. 9-15 V

D. 11-16 V

B. 7-12 V

Câu 4: What is the function of a Digital to Analog Converter?

A. to generate an analog voltage from digital signals

B. to allow analog current to be controlled by a digital number

C. to produce a waveform with an analog frequency

D. to accept both digital and analog inputs

A. to generate an analog voltage from digital signals

Câu 5: Which board is commonly used for IoT projects?

A. Raspberry Pi

B. Arduino UNO

C. BeagleBone Black

D. All of the above

D. All of the above

Câu 6: What is the size of the SRAM of the Arduino Uno R3?

A. 1 KB

B. 2 KB

C. 4 KB

D. 8 KB

B. 2 KB

Câu 7: Which sensor is LM35?

A. Pressure sensor

B. Humidity sensor

C. Touch sensor

D. Temperature sensor

D. Temperature sensor

Câu 8: What is DHT11?

A. Proximity sensor

B. Touch sensor

C. Pressure sensor

D. Temperature and humidity sensor

E. None of the others

D. Temperature and humidity sensor

Câu 9: Which of the following is NOT an actuator in IoT?

A. A push button

B. An LED

C. A servo motor

D. A buzzer

A. A push button

Câu 10: Is it possible to have multiple software serial ports (UART) with speeds up to 115200 bps?

A. Yes, only one software serial port is possible.

B. Yes, but the maximum speed is limited to 9600 bps.

C. No, software serial ports are limited to a single port.

D. Yes, multiple software serial ports are possible with speeds up to 115200 bps.

D. Yes, multiple software serial ports are possible with speeds up to 115200 bps.

Câu 11: Which type of network is the connection between a Bluetooth headset and a smartphone?

A. PAN

B. MAN

C. LAN

D. WAN

A. PAN

Câu 12: What is the primary function of the Ultrasonic Sensor in IoT applications?

A. Measuring air pressure

B. Detecting humidity levels

C. Enabling image processing

D. Proximity Detection

D. Proximity Detection

Câu 13: What is the correct syntax to output a string like "I like IoT" in C program?

A. System.out.println("I like IoT");

B. Console.WriteLine("I like IoT");

C. System.output("I like IoT");

D. printf("I like IoT");

D. printf("I like IoT");

Câu 14: Which Arduino command is used to generate a pulse width modulated signal?

A. analogWrite()

B. tone()

C. digitalRead()

D. digitalWrite()

A. analogWrite()

Câu 15: To program sending and receiving data between Arduino and BLUETOOTH HC06, how to connect the pins?

A. TX connects to pin 0 and RX pin connects to pin 1 on Arduino

B. TX connects to pin 1 and RX pin connects to pin 0 on Arduino

C. TX connects to pin 1 and TX pin connects to pin 0 on Arduino

D. RX connects to pin 1 and RX pin connects to pin 0 on Arduino

A. TX connects to pin 0 and RX pin connects to pin 1 on Arduino

Câu 16: What will be the output of the following Arduino code?#define X 10void setup() { X=0; ... }

A. 0

B. 10

C. Null

D. Error

D. Error (Vì #define tạo ra hằng số, không thể gán giá trị mới cho nó trong chương trình)

Câu 17: Which of the following is used for comments in Arduino sketch?

A. /comment/

B. ./comment/

C. \comment

D. both // comment and /* comment /

D. both // comment and / comment */

Câu 18: How many times does the loop() function run on every startup of the Arduino System?

A. 1

B. Depends upon the setup() function

C. Infinitely till the power is supplied to the Arduino

D. 3

C. Infinitely till the power is supplied to the Arduino

Câu 19: What is the term for the extension of the existing Internet structure to billions of connected devices?

A. Digitization

B. M2M

C. IoT

D. B2B

C. IoT

Câu 20: Which software is used to upload the Arduino Sketches to the board?

A. Avigco

B. g

C. python for windows

D. Avrdude

D. Avrdude

Câu 21: Which function below is used to configure pins as input or output?

A. DigitalWrite()

B. pinMode()

C. DigitalRead()

D. Println()

B. pinMode()

Câu 22: How can IoT systems address the issue of data privacy in the cloud?

A. By restricting device access to the cloud

B. By ensuring all data is publicly accessible

C. By preventing misuse of private data

D. By increasing the data storage capacity in the cloud

C. By preventing misuse of private data

Câu 23: Which of the following is a challenge that arises when manipulating big data for analysis?

A. The difficulty in storing data

B. Ensuring data accuracy and consistency

C. The lack of data collection sources

D. The absence of tools for manipulating the data

B. Ensuring data accuracy and consistency

Câu 24: Which of the following is an example of a method used for authenticating IoT devices?

A. RFID (Radio Frequency Identification)

B. Device power consumption monitoring

C. Device software version tracking

D. Physical device location tracking

A. RFID (Radio Frequency Identification)

Câu 25: The following trend is NOT related to the growth in IoT technology:

A. Increase in computer monitor size over time

B. Decrease in computer size over time

C. Increase in computer performance over time

D. Decrease in computer cost over time

A. Increase in computer monitor size over time

Câu 26: What type of actuator is typically used to control the movement of a conveyor belt?

A. Electrical

B. Hydraulic

C. Mechanical

D. Pneumatic

A. Electrical (Sử dụng động cơ điện)

Câu 27: What feature of IPv6 makes it particularly suitable for IoT?

A. It provides many more IP addresses

B. It has better encryption

C. It uses less power

D. It is easier to remember

A. It provides many more IP addresses

Câu 28: When integrating IoT devices with cloud platforms, what is the main programming challenge related to data flow?

A. Minimizing the physical size of data packets

B. Ensuring real-time data synchronization across devices

C. Prioritizing graphical data over textual data

D. Creating aesthetically pleasing data visualizations

B. Ensuring real-time data synchronization across devices

Câu 29: What are the key components in ensuring the security of IoT networks and devices?

A. Data encryption, hardware configuration, and network optimization

B. Authentication, authorization, network enforced policy, and secure analytics

C. Biometrics, X.509 digital certificates, and endpoint MAC addresses

D. Data monitoring, cloud integration, and device management

B. Authentication, authorization, network enforced policy, and secure analytics

Câu 30: What is each controller in memory-mapped I/O used for?

A. Perform any error correction necessary

B. Communication with memory

C. Communication with the CPU

D. Perform read and write with I/O devices

D. Perform read and write with I/O devices

Câu 31: Which issue in the cloud focuses on protecting data from theft or corruption?

A. DATA PRIVATE

B. DATA ACCESS

C. DATA THEFT

D. SECURE NETWORK

C. DATA THEFT

Câu 32: In IoT, what is the purpose of a Gateway?

A. To act as an intermediary for data transmission between different network protocols

B. To store data collected from IoT devices

C. To increase the power supply to IoT devices

D. To directly connect sensors to the internet

A. To act as an intermediary for data transmission between different network protocols

Câu 33: Which statements are true regarding Ohm's Law?

(Choose 2 answers)

A. When resistance increases and current is held constant, voltage also increases.

B. When resistance decreases and current is held constant, voltage also increases.

C. When resistance is held constant and current increases, voltage also increases.

D. When resistance increases and current is held constant, voltage also decreases.

A, C

Câu 34: If the following are the parameters of ADC, Vref=5V, and a 10-bit A/D output code is 0x1AB, what is the ADC input voltage?

A. 1.685V

B. 2.085V

C. 1.885V

D. 2.285V

B. 2.085V (0x1AB = 427; 427 * 5 / 1023 ≈ 2.08V)

Câu 35: What resistance value does a resistor with brown, black, and red bands indicate?

A. 43 kOhm

B. 10 kOhm

C. 1000 Ohm

D. 10 Ohm

C. 1000 Ohm (1 kOhm)

Câu 36: Which pins support the serial communication between the Arduino Uno communicate and the computer?

A. UART pins

B. ADC pins

C. I2C pins

D. PWM pins

A. UART pins

Câu 37: What is the significance of programming sensors/actuators in IoT projects?

A. To display information

B. To interact with the physical world

C. To improve battery life

D. To enhance audio quality

B. To interact with the physical world

Câu 38: In the smart grid architecture of IoT, what is the primary function of the Cloud?

A. Enhancing security

B. Collecting data

C. Managing data

D. Storing data

C. Managing data

Câu 39: Which device commonly uses binary states to store information?

A. Resistor

B. Transistor

C. Capacitor

D. Inductor

B. Transistor

Câu 40: What is the primary function of a resistor in a circuit?

A. To amplify electrical signals

B. To store electrical energy

C. To oppose the flow of electrical current

D. To convert electrical energy into mechanical energy

C. To oppose the flow of electrical current

Câu 41: What is electricity?

A. A type of energy used only for lighting

B. A form of energy that can produce work

C. A form of energy only used in machines

D. None of the others

B. A form of energy that can produce work

Câu 42: What is the function of a schematic diagram in electronics?

A. To provide a realistic representation of the physical arrangement of components

B. To show the components and interconnections in a circuit using symbolic representations

C. To detail the manufacturing process of electronic devices

D. To list all the components needed in a circuit

B. To show the components and interconnections in a circuit using symbolic representations

Câu 43: What is the fundamental process that leads to electricity when considering the structure of atoms?

A. The movement of protons within the nucleus

B. The exchange of neutrons between atoms

C. The interaction between electrons and protons

D. The jumping of negatively charged electrons between atoms

D. The jumping of negatively charged electrons between atoms

Câu 44: If a resistor has bands of yellow, violet, and orange, what would be its resistance value?

A. 43 kilo Ohms

B. 470 Ohms

C. 47 kilo Ohms

D. 4.7 kilo Ohms

C. 47 kilo Ohms (Yellow=4, Violet=7, Orange=1000; 47 * 1000 = 47000 Ohm)

Câu 45: A part of an Arduino sketch is as follows: digitalWrite(13, HIGH); delay(1000); digitalWrite(13, LOW); delay(1000); How long is the built-in LED on?

A. 1000 seconds

B. 100 seconds

C. 1 second

D. 100 milliseconds

C. 1 second

Câu 46: Given the nominal voltage of an AAA battery is 1.5 V, what is the nominal voltage of 5 AAA batteries connected in parallel?

A. 6V

B. 7.5V

C. 9V

D. 1.5V

D. 1.5V (Mắc song song điện áp không đổi)

Câu 47: Which of the following is an example of a fog computing concept in IoT?

A. Storing data on remote servers

B. Routing data through multiple gateways

C. Performing data analytics on edge devices

D. Using blockchain technology for secure transactions

C. Performing data analytics on edge devices

Câu 48: Which layer of IoT architecture involves sensors and devices that collect data?

A. Perception layer

B. Network layer

C. Application layer

D. Data layer

A. Perception layer

Câu 49: How many bits are in an IPv4 address?

A. 4

B. 16

C. 32

D. 64

C. 32

Câu 50: When was the actual term "Internet of Things" coined?

A. 1998

B. 1999

C. 2001

D. 2002

B. 1999