M4-R5.1 Model Paper — Set 5 — MCQ Quiz | Free O-Level Study Notes & MCQs

1

What is the full form of HTTP? / HTTP का पूर्ण रूप क्या है?

A

HyperText Transfer Protocol

B

High Transfer Text Protocol

C

Hyper Transfer Text Protocol

D

HighText Transfer Protocol

2

Which protocol is used for secure communication over the internet? / इंटरनेट पर सुरक्षित संचार के लिए किस प्रोटोकॉल का उपयोग किया जाता है?

A

HTTP

B

HTTPS

C

FTP

D

SMTP

3

What is the purpose of the 'loop()' function in Arduino? / Arduino में 'loop()' फ़ंक्शन का क्या उद्देश्य है?

A

It runs once at the start

B

It runs continuously after setup()

C

It stops the program

D

It initializes variables

4

Which sensor is used to measure soil moisture? / मिट्टी की नमी मापने के लिए किस सेंसर का उपयोग किया जाता है?

A

DHT11

B

Soil Moisture Sensor

C

LDR

D

Ultrasonic Sensor

5

What is the output of analogWrite(255) on a PWM pin? / PWM पिन पर analogWrite(255) का आउटपुट क्या है?

A

0V

B

2.5V

C

5V (100% duty cycle)

D

10V

6

What is the purpose of the 'detachInterrupt()' function in Arduino? / Arduino में 'detachInterrupt()' फ़ंक्शन का क्या उद्देश्य है?

A

To attach an interrupt to a pin

B

To detach (remove) an interrupt from a pin

C

To disable all interrupts

D

To enable all interrupts

7

Which of the following is an example of an input device in IoT? / निम्नलिखित में से कौन सा IoT में इनपुट डिवाइस का उदाहरण है?

A

LED

B

Buzzer

C

Temperature Sensor

D

DC Motor

8

What does the 'pulseInLong()' function do in Arduino? / Arduino में 'pulseInLong()' फ़ंक्शन क्या करता है?

A

Measures long pulses with higher accuracy

B

Generates a long pulse

C

Reads analog value

D

Configures a pin as output

9

What is the purpose of a variable resistor (potentiometer)? / वेरिएबल रेजिस्टर (पोटेंशियोमीटर) का क्या उद्देश्य है?

A

To provide a fixed resistance

B

To provide a variable resistance that can be adjusted

C

To store energy

D

To amplify signals

10

Which communication protocol uses TX and RX pins for data transfer? / कौन सा संचार प्रोटोकॉल डेटा ट्रांसफर के लिए TX और RX पिन का उपयोग करता है?

A

I2C

B

SPI

C

UART

D

CAN

11

What is the purpose of the 'shiftIn()' function in Arduino? / Arduino में 'shiftIn()' फ़ंक्शन का क्या उद्देश्य है?

A

To shift data into a shift register

B

To shift data out of a shift register

C

To read data from a shift register

D

To generate PWM signals

12

Which gas does the MQ-7 sensor detect? / MQ-7 सेंसर किस गैस का पता लगाता है?

A

LPG

B

Carbon Monoxide (CO)

C

Methane

D

Hydrogen

13

What is the purpose of the 'EEPROM.read()' function in Arduino? / Arduino में 'EEPROM.read()' फ़ंक्शन का क्या उद्देश्य है?

A

To write data to EEPROM

B

To read data from EEPROM

C

To clear the EEPROM

D

To check the size of EEPROM

14

What is the default baud rate for Serial communication in most Arduino examples? / अधिकांश Arduino उदाहरणों में सीरियल संचार के लिए डिफ़ॉल्ट बॉड रेट क्या है?

A

4800

B

9600

C

115200

D

19200

15

Which of the following is a microprocessor? / निम्नलिखित में से कौन सा माइक्रोप्रोसेसर है?

A

ATmega328P

B

ESP8266

C

Intel Core i7

D

ATtiny85

16

What is the purpose of the 'analogReference()' function with INTERNAL parameter? / INTERNAL पैरामीटर के साथ 'analogReference()' फ़ंक्शन का क्या उद्देश्य है?

A

To use external reference voltage

B

To use internal 1.1V reference voltage

C

To use 5V reference voltage

D

To disable ADC

17

What does the '&&' operator do in Embedded C? / एम्बेडेड C में '&&' ऑपरेटर क्या करता है?

A

Logical OR

B

Logical AND

C

Bitwise AND

D

Bitwise OR

18

What is the purpose of the 'do-while' loop in C? / C में 'do-while' लूप का क्या उद्देश्य है?

A

It executes the code block at least once before checking the condition

B

It checks the condition first, then executes

C

It never executes the code block

D

It executes infinitely

19

Which type of memory stores the program code in a microcontroller? / माइक्रोकंट्रोलर में प्रोग्राम कोड किस प्रकार की मेमोरी में संग्रहीत होता है?

A

RAM

B

Flash Memory

C

EEPROM

D

Cache Memory

20

What is the purpose of an internal pull-up resistor in Arduino? / Arduino में आंतरिक पुल-अप रेजिस्टर का क्या उद्देश्य है?

A

It pulls the pin to GND internally

B

It pulls the pin to VCC (5V) internally

C

It disables the pin

D

It increases current

21

How do you enable the internal pull-up resistor on an Arduino pin? / Arduino पिन पर आंतरिक पुल-अप रेजिस्टर को कैसे सक्षम करते हैं?

A

pinMode(pin, INPUT_PULLUP)

B

pinMode(pin, OUTPUT)

C

digitalWrite(pin, LOW)

D

analogRead(pin)

22

Which of the following is a Bluetooth Low Energy (BLE) module? / निम्नलिखित में से कौन सा ब्लूटूथ लो एनर्जी (BLE) मॉड्यूल है?

A

HC-05

B

HC-06

C

HM-10

D

ESP8266

23

What is the purpose of the 'sei()' function in AVR programming? / AVR प्रोग्रामिंग में 'sei()' फ़ंक्शन का क्या उद्देश्य है?

A

To disable global interrupts

B

To enable global interrupts (Set Enable Interrupts)

C

To attach an interrupt

D

To detach an interrupt

24

What is the purpose of the 'cli()' function in AVR programming? / AVR प्रोग्रामिंग में 'cli()' फ़ंक्शन का क्या उद्देश्य है?

A

To enable global interrupts

B

To disable global interrupts (Clear Interrupts)

C

To attach an interrupt

D

To detach an interrupt

25

What is the standard voltage level for a HIGH digital signal on 3.3V logic devices? / 3.3V लॉजिक डिवाइस पर HIGH डिजिटल सिग्नल के लिए मानक वोल्टेज स्तर क्या है?

A

5V

B

3.3V

C

1.8V

D

12V

26

What is the standard voltage level for a LOW digital signal on most microcontrollers? / अधिकांश माइक्रोकंट्रोलर पर LOW डिजिटल सिग्नल के लिए मानक वोल्टेज स्तर क्या है?

A

5V

B

3.3V

C

0V (GND)

D

12V

27

Which sensor is used to detect alcohol concentration in breath? / सांस में अल्कोहल की मात्रा का पता लगाने के लिए किस सेंसर का उपयोग किया जाता है?

A

MQ-3

B

DHT11

C

LDR

D

Ultrasonic Sensor

28

What is the purpose of the 'new' operator in C++ for Arduino? / Arduino के लिए C++ में 'new' ऑपरेटर का क्या उद्देश्य है?

A

To delete dynamic memory

B

To allocate dynamic memory on the heap

C

To create a new function

D

To create a new class

29

What is the purpose of the 'delete' operator in C++ for Arduino? / Arduino के लिए C++ में 'delete' ऑपरेटर का क्या उद्देश्य है?

A

To allocate dynamic memory

B

To deallocate (free) dynamic memory

C

To delete a variable

D

To delete a function

30

What is the purpose of the 'Serial.parseFloat()' function in Arduino? / Arduino में 'Serial.parseFloat()' फ़ंक्शन का क्या उद्देश्य है?

A

To parse a float number from serial data

B

To parse an integer from serial data

C

To send a float over serial

D

To clear serial buffer

31

What is the purpose of the 'Serial.parseInt()' function in Arduino? / Arduino में 'Serial.parseInt()' फ़ंक्शन का क्या उद्देश्य है?

A

To parse a float number from serial data

B

To parse an integer from serial data

C

To send an integer over serial

D

To clear serial buffer

32

What is the purpose of the 'Serial.readString()' function in Arduino? / Arduino में 'Serial.readString()' फ़ंक्शन का क्या उद्देश्य है?

A

To read a single byte

B

To read a string from serial data

C

To send a string over serial

D

To clear the serial buffer

33

What is the purpose of the 'Serial.flush()' function in Arduino? / Arduino में 'Serial.flush()' फ़ंक्शन का क्या उद्देश्य है?

A

To clear the serial buffer

B

To send data immediately

C

To wait for outgoing data to complete and clear buffer

D

To close the serial connection

34

Which Arduino pin is connected to the built-in LED on Arduino Uno? / Arduino Uno पर बिल्ट-इन LED किस पिन से जुड़ी होती है?

A

Pin 13

B

Pin 12

C

Pin 11

D

Pin 10

35

What is the maximum current that can be drawn from the 3.3V pin on Arduino Uno? / Arduino Uno पर 3.3V पिन से अधिकतम कितनी करंट ली जा सकती है?

A

50 mA

B

150 mA

C

400 mA

D

500 mA

36

What is the purpose of the 'delayNanoseconds()' function? Is it available in Arduino? / 'delayNanoseconds()' फ़ंक्शन का क्या उद्देश्य है? क्या यह Arduino में उपलब्ध है?

A

It is available and delays for nanoseconds

B

It is not available in standard Arduino

C

It delays for microseconds

D

It delays for milliseconds

37

What is a decade counter IC commonly used with Arduino? / Arduino के साथ आमतौर पर उपयोग किया जाने वाला डिकेड काउंटर IC कौन सा है?

A

CD4017

B

74HC595

C

LM35

D

L293D

38

What is the purpose of a 7-segment display driver IC like MAX7219? / MAX7219 जैसे 7-सेगमेंट डिस्प्ले ड्राइवर IC का क्या उद्देश्य है?

A

To control multiple 7-segment displays with few pins

B

To measure temperature

C

To control motors

D

To store data

39

What is the purpose of the 'bitToggle()' function in Arduino? Is it a standard function? / Arduino में 'bitToggle()' फ़ंक्शन का क्या उद्देश्य है? क्या यह एक मानक फ़ंक्शन है?

A

It is a standard function to toggle a bit

B

It is not a standard Arduino function

C

It sets a bit to 1

D

It clears a bit to 0

40

How do you manually toggle an LED connected to a pin in Arduino? / Arduino में एक पिन से जुड़े LED को मैन्युअल रूप से कैसे टॉगल करते हैं?

A

digitalWrite(pin, !digitalRead(pin))

B

digitalWrite(pin, HIGH)

C

digitalWrite(pin, LOW)

D

pinMode(pin, OUTPUT)

41

What is the purpose of a joystick module in IoT? / IoT में जॉयस्टिक मॉड्यूल का क्या उद्देश्य है?

A

To get directional input (X and Y axis)

B

To measure temperature

C

To measure distance

D

To detect gas

42

What is a thumb joystick typically used for? / थंब जॉयस्टिक का उपयोग आमतौर पर किस लिए किया जाता है?

A

For gaming and robot control

B

For temperature measurement

C

For humidity sensing

D

For gas detection

43

What is the purpose of a rotary encoder? / रोटरी एनकोडर का क्या उद्देश्य है?

A

To measure rotation angle and direction

B

To measure temperature

C

To measure humidity

D

To detect gas

44

What is the difference between a rotary encoder and a potentiometer? / रोटरी एनकोडर और पोटेंशियोमीटर के बीच क्या अंतर है?

A

Encoder can rotate infinitely, potentiometer has a limited rotation range

B

Potentiometer can rotate infinitely, encoder has limited range

C

Both are the same

D

Encoder measures voltage only

45

What is the purpose of a touch sensor module (TTP223)? / टच सेंसर मॉड्यूल (TTP223) का क्या उद्देश्य है?

A

To detect capacitive touch

B

To measure temperature

C

To measure pressure

D

To detect gas

46

What is the purpose of a sound sensor (microphone module) in IoT? / IoT में साउंड सेंसर (माइक्रोफोन मॉड्यूल) का क्या उद्देश्य है?

A

To detect sound intensity or presence of sound

B

To play audio

C

To record music

D

To generate sound

47

What is a digital temperature sensor DS18B20? / डिजिटल तापमान सेंसर DS18B20 क्या है?

A

A one-wire digital temperature sensor with unique 64-bit address

B

An analog temperature sensor

C

A humidity sensor

D

A pressure sensor

48

What is the advantage of DS18B20 over LM35 temperature sensor? / LM35 तापमान सेंसर की तुलना में DS18B20 का क्या लाभ है?

A

Digital output and multiple sensors on one wire

B

Lower cost only

C

Smaller size only

D

Analog output only

49

What is the purpose of a water flow sensor? / वॉटर फ्लो सेंसर का क्या उद्देश्य है?

A

To measure the flow rate of water

B

To measure water temperature

C

To measure water level

D

To detect water leakage

50

What is a turbidity sensor used for? / टर्बिडिटी सेंसर का उपयोग किस लिए किया जाता है?

A

To measure water clarity (cloudiness)

B

To measure water temperature

C

To measure water flow

D

To measure water pressure

51

What is a pH sensor used for? / pH सेंसर का उपयोग किस लिए किया जाता है?

A

To measure acidity or alkalinity of a solution

B

To measure temperature

C

To measure humidity

D

To measure pressure

52

What is the purpose of an EC (Electrical Conductivity) sensor? / EC (इलेक्ट्रिकल कंडक्टिविटी) सेंसर का क्या उद्देश्य है?

A

To measure the conductivity of a liquid (nutrient levels)

B

To measure temperature

C

To measure pH

D

To measure flow rate

53

What is the purpose of a rain sensor? / रेन सेंसर का क्या उद्देश्य है?

A

To detect the presence of rain or water

B

To measure rainfall amount precisely

C

To measure wind speed

D

To measure humidity

54

What is the purpose of a wind speed sensor (anemometer)? / विंड स्पीड सेंसर (एनेमोमीटर) का क्या उद्देश्य है?

A

To measure wind speed

B

To measure wind direction only

C

To measure temperature

D

To measure humidity

55

What is the purpose of a wind direction sensor (wind vane)? / विंड डायरेक्शन सेंसर (विंड वेन) का क्या उद्देश्य है?

A

To measure wind direction

B

To measure wind speed only

C

To measure temperature

D

To measure pressure

56

What is a BME280 sensor used for? / BME280 सेंसर का उपयोग किस लिए किया जाता है?

A

To measure temperature, humidity, and barometric pressure

B

To measure only temperature

C

To measure only humidity

D

To measure only pressure

57

What is the purpose of a MAX30100 sensor? / MAX30100 सेंसर का क्या उद्देश्य है?

A

To measure heart rate and blood oxygen (SpO2)

B

To measure temperature

C

To measure pressure

D

To measure gas

58

What is the purpose of an OLED display in IoT? / IoT में OLED डिस्प्ले का क्या उद्देश्य है?

A

To display information graphically with low power consumption

B

To measure light

C

To store data

D

To control motors

59

What is the typical communication interface for most OLED displays with Arduino? / Arduino के साथ अधिकांश OLED डिस्प्ले के लिए विशिष्ट संचार इंटरफ़ेस क्या है?

A

I2C

B

SPI

C

UART

D

Parallel

60

What is the purpose of the 'Adafruit_SSD1306' library in Arduino? / Arduino में 'Adafruit_SSD1306' लाइब्रेरी का क्या उद्देश्य है?

A

To control SSD1306-based OLED displays

B

To control LCD displays

C

To control LED strips

D

To control servo motors

61

What is the purpose of the 'LiquidCrystal_I2C' library in Arduino? / Arduino में 'LiquidCrystal_I2C' लाइब्रेरी का क्या उद्देश्य है?

A

To control I2C-based LCD displays with fewer pins

B

To control standard parallel LCD

C

To control OLED displays

D

To control LED matrices

62

What is the purpose of the 'LedControl.h' library in Arduino? / Arduino में 'LedControl.h' लाइब्रेरी का क्या उद्देश्य है?

A

To control MAX7219-based LED matrix or 7-segment displays

B

To control single LEDs

C

To control RGB LEDs

D

To control LED strips

63

What is the purpose of the 'DHT.h' library in Arduino? / Arduino में 'DHT.h' लाइब्रेरी का क्या उद्देश्य है?

A

To read data from DHT series temperature and humidity sensors

B

To control displays

C

To control motors

D

To communicate via Wi-Fi

64

What is the purpose of the 'OneWire.h' library in Arduino? / Arduino में 'OneWire.h' लाइब्रेरी का क्या उद्देश्य है?

A

To communicate with OneWire devices like DS18B20 temperature sensor

B

To communicate via I2C

C

To communicate via SPI

D

To communicate via UART

65

What is the purpose of the 'DallasTemperature.h' library in Arduino? / Arduino में 'DallasTemperature.h' लाइब्रेरी का क्या उद्देश्य है?

A

To work with DS18B20 temperature sensors

B

To work with DHT sensors

C

To work with LM35 sensors

D

To work with thermistors

66

What is the purpose of the 'RTClib.h' library in Arduino? / Arduino में 'RTClib.h' लाइब्रेरी का क्या उद्देश्य है?

A

To work with Real Time Clock (RTC) modules like DS3231

B

To measure temperature

C

To control displays

D

To control motors

67

What is the purpose of the 'SD.h' library in Arduino? / Arduino में 'SD.h' लाइब्रेरी का क्या उद्देश्य है?

A

To read and write data to SD cards

B

To control servo motors

C

To communicate via Bluetooth

D

To measure temperature

68

What is the purpose of the 'SPI.h' library in Arduino? / Arduino में 'SPI.h' लाइब्रेरी का क्या उद्देश्य है?

A

To communicate using SPI protocol

B

To communicate using I2C protocol

C

To communicate using UART protocol

D

To control PWM pins

69

What is the purpose of the 'Wire.h' library in Arduino? / Arduino में 'Wire.h' लाइब्रेरी का क्या उद्देश्य है?

A

To communicate using I2C/TWI protocol

B

To communicate using SPI protocol

C

To communicate using UART protocol

D

To control digital pins

70

What is the purpose of the 'EEPROM.h' library in Arduino? / Arduino में 'EEPROM.h' लाइब्रेरी का क्या उद्देश्य है?

A

To read and write data to internal EEPROM memory

B

To control external EEPROM chips

C

To manage flash memory

D

To manage RAM

71

What is the purpose of the 'Servo.h' library in Arduino? / Arduino में 'Servo.h' लाइब्रेरी का क्या उद्देश्य है?

A

To control servo motors

B

To control DC motors

C

To control stepper motors

D

To control LED brightness

72

What is the purpose of the 'Stepper.h' library in Arduino? / Arduino में 'Stepper.h' लाइब्रेरी का क्या उद्देश्य है?

A

To control stepper motors

B

To control servo motors

C

To control DC motors

D

To control relays

73

What is the purpose of the 'AccelStepper.h' library in Arduino? / Arduino में 'AccelStepper.h' लाइब्रेरी का क्या उद्देश्य है?

A

To control stepper motors with acceleration and deceleration

B

To control standard stepper motors without acceleration

C

To control servo motors

D

To control DC motors

74

What is the purpose of the 'LiquidCrystal.h' library in Arduino? / Arduino में 'LiquidCrystal.h' लाइब्रेरी का क्या उद्देश्य है?

A

To control standard parallel LCD displays (16x2, 20x4)

B

To control I2C LCD displays

C

To control OLED displays

D

To control 7-segment displays

75

What is the purpose of the 'Keypad.h' library in Arduino? / Arduino में 'Keypad.h' लाइब्रेरी का क्या उद्देश्य है?

A

To interface with matrix keypads

B

To interface with single buttons

C

To control touch screens

D

To read analog joysticks

76

What is the purpose of the 'IRremote.h' library in Arduino? / Arduino में 'IRremote.h' लाइब्रेरी का क्या उद्देश्य है?

A

To send and receive infrared signals

B

To measure temperature

C

To control LED brightness

D

To communicate via Bluetooth

77

What is the purpose of the 'FastLED.h' library in Arduino? / Arduino में 'FastLED.h' लाइब्रेरी का क्या उद्देश्य है?

A

To control addressable RGB LED strips (NeoPixels/WS2812)

B

To control standard LEDs

C

To control LCD displays

D

To control servo motors

78

What is the purpose of the 'Adafruit_NeoPixel.h' library in Arduino? / Arduino में 'Adafruit_NeoPixel.h' लाइब्रेरी का क्या उद्देश्य है?

A

To control NeoPixel (WS2812) addressable RGB LEDs

B

To control standard LEDs

C

To control OLED displays

D

To control servos

79

What is the purpose of the 'SoftwareSerial.h' library in Arduino? / Arduino में 'SoftwareSerial.h' लाइब्रेरी का क्या उद्देश्य है?

A

To create additional serial ports on any digital pins

B

To improve hardware serial speed

C

To disable serial communication

D

To convert serial to parallel

80

What is the purpose of the 'AltSoftSerial.h' library in Arduino? / Arduino में 'AltSoftSerial.h' लाइब्रेरी का क्या उद्देश्य है?

A

A more reliable alternative software serial using timers

B

A less reliable software serial

C

To replace hardware serial

D

To disable serial

81

What is the purpose of the 'TinyGPS++.h' library in Arduino? / Arduino में 'TinyGPS++.h' लाइब्रेरी का क्या उद्देश्य है?

A

To parse NMEA data from GPS modules

B

To control GPS modules

C

To send data to GPS modules

D

To store GPS data

82

What is the purpose of the 'PubSubClient.h' library in Arduino? / Arduino में 'PubSubClient.h' लाइब्रेरी का क्या उद्देश्य है?

A

To implement MQTT client for IoT communication

B

To implement HTTP client

C

To implement FTP client

D

To implement TCP client

83

What is the purpose of the 'WiFiClient.h' library in Arduino? / Arduino में 'WiFiClient.h' लाइब्रेरी का क्या उद्देश्य है?

A

To create TCP connections over Wi-Fi

B

To create UDP connections

C

To scan Wi-Fi networks

D

To configure Wi-Fi credentials

84

What is the purpose of the 'WebServer.h' library in Arduino? / Arduino में 'WebServer.h' लाइब्रेरी का क्या उद्देश्य है?

A

To create a web server on Arduino

B

To create a web client

C

To send emails

D

To upload files

85

What is the purpose of the 'ArduinoJson.h' library? / 'ArduinoJson.h' लाइब्रेरी का क्या उद्देश्य है?

A

To parse and generate JSON data

B

To parse XML data

C

To parse CSV data

D

To parse HTML data

86

What is the purpose of the 'ArduinoOTA.h' library? / 'ArduinoOTA.h' लाइब्रेरी का क्या उद्देश्य है?

A

To enable Over-The-Air firmware updates

B

To enable serial communication

C

To enable Wi-Fi scanning

D

To enable Bluetooth communication

87

What is the purpose of the 'ESP8266WiFi.h' library? / 'ESP8266WiFi.h' लाइब्रेरी का क्या उद्देश्य है?

A

To connect ESP8266 to Wi-Fi networks

B

To control GPIO pins

C

To measure temperature

D

To control servos

88

What is the purpose of the 'BluetoothSerial.h' library in ESP32? / ESP32 में 'BluetoothSerial.h' लाइब्रेरी का क्या उद्देश्य है?

A

To enable Bluetooth Serial communication on ESP32

B

To enable Wi-Fi on ESP32

C

To enable BLE only

D

To enable classic Bluetooth only

89

What is the purpose of the 'Preferences.h' library in ESP32? / ESP32 में 'Preferences.h' लाइब्रेरी का क्या उद्देश्य है?

A

To store key-value pairs in non-volatile memory

B

To store large files

C

To store logs

D

To store program code

90

What is the purpose of the 'FS.h' library in ESP32? / ESP32 में 'FS.h' लाइब्रेरी का क्या उद्देश्य है?

A

To work with file systems (SPIFFS, LittleFS)

B

To work with SD cards only

C

To work with EEPROM

D

To work with Flash memory only

91

What is the purpose of the 'SPIFFS.h' library in ESP8266/ESP32? / ESP8266/ESP32 में 'SPIFFS.h' लाइब्रेरी का क्या उद्देश्य है?

A

To use SPI Flash File System for storing files

B

To use SD card file system

C

To use FAT file system

D

To use NTFS file system

92

What is the purpose of the 'LittleFS.h' library in ESP8266/ESP32? / ESP8266/ESP32 में 'LittleFS.h' लाइब्रेरी का क्या उद्देश्य है?

A

A more efficient and reliable file system for flash memory

B

An older file system

C

A file system for SD cards only

D

A file system for EEPROM

93

What is the purpose of the 'AsyncWebServer.h' library in ESP32? / ESP32 में 'AsyncWebServer.h' लाइब्रेरी का क्या उद्देश्य है?

A

To create an asynchronous web server

B

To create a synchronous web server

C

To create a web client

D

To create a web socket

94

What is the purpose of the 'WebSockets.h' library in ESP32? / ESP32 में 'WebSockets.h' लाइब्रेरी का क्या उद्देश्य है?

A

To implement WebSocket protocol for real-time communication

B

To implement HTTP protocol

C

To implement FTP protocol

D

To implement SMTP protocol

95

What is the purpose of the 'ThingSpeak.h' library in Arduino? / Arduino में 'ThingSpeak.h' लाइब्रेरी का क्या उद्देश्य है?

A

To send data to ThingSpeak IoT platform

B

To receive data from ThingSpeak

C

To control devices via ThingSpeak

D

To analyze data on ThingSpeak

96

What is the purpose of the 'BlynkSimpleEsp8266.h' library? / 'BlynkSimpleEsp8266.h' लाइब्रेरी का क्या उद्देश्य है?

A

To connect ESP8266 to Blynk IoT platform

B

To connect Arduino Uno to Blynk

C

To connect ESP32 to Blynk

D

To connect Raspberry Pi to Blynk

97

What is the purpose of the 'Adafruit_MQTT.h' library? / 'Adafruit_MQTT.h' लाइब्रेरी का क्या उद्देश्य है?

A

To implement MQTT client for Adafruit IO platform

B

To implement generic MQTT client

C

To implement HTTP client

D

To implement CoAP client

98

What is the purpose of the 'FirebaseESP8266.h' library? / 'FirebaseESP8266.h' लाइब्रेरी का क्या उद्देश्य है?

A

To connect ESP8266 to Google Firebase

B

To connect ESP32 to Firebase

C

To connect Arduino Uno to Firebase

D

To connect Raspberry Pi to Firebase

99

What is the purpose of the 'digitalWrite()' function when used on an INPUT pin in Arduino? / Arduino में INPUT पिन पर 'digitalWrite()' फ़ंक्शन का उपयोग करने का क्या उद्देश्य है?

A

It writes a value to the pin like an OUTPUT pin

B

It enables or disables the internal pull-up resistor on that INPUT pin

C

It causes an error during compilation

D

It reads the value from the pin instead

100

What is the importance of punctuation and grammar in written communication? / लिखित संचार में विराम चिह्न और व्याकरण का क्या महत्व है?

A

They ensure clarity, accuracy, and professionalism in the message

B

They are only important in academic writing

C

They make the text longer and more complex

D

They are optional and do not affect understanding