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WorksheetsNodeMCU and ESP01 Module Worksheet
Total questions: 40
Worksheet time: 20mins
Which microcontroller is used in NodeMCU?
ATmega328
ESP8266
STM32
PIC16F877A
What programming language is mainly used for NodeMCU?
C++
Python
Lua
Java
NodeMCU board is commonly programmed using which IDE?
Arduino IDE
Visual Studio
Eclipse
Code::Blocks
What is the operating voltage of NodeMCU?
3.3 V
5 V
9 V
12 V
What is the clock speed of ESP8266 chip?
16 MHz
40 MHz
80 MHz
120 MHz
How many GPIO pins are available on NodeMCU v3?
10
11
17
12
Which USB-to-Serial chip is used in most NodeMCU boards?
CH340
FT232
PL2303
MAX232
What is the main purpose of NodeMCU board?
Power regulation
IoT development
Display control
Sound control
Which voltage regulator chip is present on NodeMCU?
AMS1117
7805
LM317
LM7809
Which communication protocol is mainly used by NodeMCU for IoT?
I2C
SPI
Wi-Fi
Bluetooth
What is the main function of the ESP01 module?
To add Wi-Fi
To drive motors
To store data
To sense temperature
Which chip is used inside the ESP01 module?
ESP32
ESP8266
ATmega328
STM32
How many GPIO pins are available in ESP01?
2
4
8
10
What is the default baud rate of ESP01?
9600
115200
57600
4800
Which interface does ESP01 use?
SPI
UART
I2C
USB
What is the operating voltage range of ESP01?
1.8–2.5 V
3.0–3.6 V
5–9 V
9–12 V
Which Wi-Fi standard does ESP01 support?
802.11a
802.11b/g/n
802.11ac
802.11ax
What is the flash memory capacity of standard ESP01?
256 KB
512 KB
1 MB
4 MB
Which command type controls ESP01 Wi-Fi?
I2C
AT Commands
SPI
JSON
What is the main advantage of ESP01 with Arduino?
Low speed
Adds Wi-Fi
Extra storage
Extra display
Which company manufactures ESP32?
C) Espressif Systems
A) Texas Instruments
B) Microchip Technology
D) STMicroelectronics
ESP32 has how many cores?
A) 1
B) 2
C) 3
D) 4
Default clock speed of ESP32?
D) 240 MHz
A) 80 MHz
B) 120 MHz
C) 160 MHz
Wireless communication features?
A) Wi-Fi + Bluetooth
B) NFC only
C) Infrared only
D) Ethernet only
How many ADC channels in ESP32?
A) 18
B) 8
C) 12
D) 6
ADC resolution?
C) 12-bit
A) 6-bit
B) 8-bit
D) 16-bit
Program storage memory type?
A) Flash memory
B) RAM
C) Cache
D) Register
Maximum Wi-Fi frequency?
A) 2.4 GHz
B) 1.8 GHz
C) 900 MHz
D) 5 GHz
What makes ESP32 stronger than ESP8266?
Dual-core CPU
Lower clock speed
Less memory
Single-core CPU
Common ESP32 board?
NodeMCU-32S
Arduino Uno
Raspberry Pi Pico
STM32F103C8T6
Purpose of Wi-Fi in IoT?
Data storage
Wireless communication
Power supply
Library to connect NodeMCU?
ESP8266WiFi.h
WiFiManager.h
Ethernet.h
Function to connect Wi-Fi?
WiFi.connect()
WiFi.begin()
WiFi.attach()
WiFi.status() success return?
WL_CONNECTED
WL_DISCONNECTED
WL_IDLE
Get local IP?
WiFi.localIP()
WiFi.getIP()
WiFi.IPaddress()
Access point mode use?
Connect to router
Create own network
Connect to internet
Q37. Station (STA) mode?
Connect to router
Create own network
Connect to internet
Both AP + STA possible?
No
Yes
SSID meaning?
Signal strength
Network name
Device address
WiFi.disconnect()?
Turns off Wi-Fi
Connects to Wi-Fi
Scans for Wi-Fi
