What is the error in this given line of code?

if(val=true){digitalWrite(4,HIGH)}

Which among the following language is used to create a web server along C/C++?

What is the correct syntax to include a library in the Arduino IDE?

When we create a web server using ESP8266, we include two libraries. Select the correct option stating the two libraries.

In what way, we can update/upload a new program to ESP8266 using Wi-Fi instead of requiring to connect the ESP8266 to a computer via USB ?

While writing a code for using ESP8266 with wifi, we need to specify the SSID. What is it?

To which pin is the on board LED of the ESP8266 connected?

What is the allowable external regulated supply which can be provided to the ESP8266 through Vin?

State True or False : The Network Transfer protocol (NTP) can be used to synchronize all networked devices to Coordinated Universal Time (UTC) within a few milliseconds.

Which button in the ESP8266 is used to load the code again?

Which of the following sensors/modules use UART interface as their communication protocol?

Raman is searching that pin of Nodemcu ESP8266 which can be used to give signal to a servo motor. He chooses D8 as the required pin because :

State True or False : ESP8266 has an on board 3.3V 600mA regulator.

Before uploading the code, we check the Board and the port. Which board option has to selected while using ESP8266?

Which option fits the best for the blank below:
NodeMCU is an open source .......... based firmware for the ESP8266 WiFi SOC from Espressif Systems.

Which of the following sensors can be used with ESP8266?

The following code makes the pin D4 HIGH for how many seconds?
{
digitalWrite(4,HIGH);
delay(10000);
}

Name the chip used in the NodeMCU ESP8266 board which serves as the main controlling unit.