The video tutorial explains how to create an interface for a product object in TypeScript. It covers defining the interface with four fields: ID, name, description, and price, and choosing appropriate data types for each. The tutorial also discusses naming conventions for interfaces and demonstrates how to set up and define properties within the interface.

What are the four fields that a product interface should have?

• ID, name, description, and price

• Name, description, price, and stock

• ID, name, category, and stock

• ID, category, description, and price

Which data type is suggested for the 'ID' field in a product interface?

• Number

• Boolean

• Array

• String

What is the purpose of creating a folder named 'Interfaces' in Visual Studio Code?

• To store all TypeScript files

• To organize interface files separately

• To save all JavaScript files

• To keep all HTML files

What is a common naming convention for interface files in TypeScript?

• Using lowercase letters only

• Prefixing with 'I' like 'IProduct'

• Using numbers in the name

• Ending with '.js' extension

How are properties declared within a TypeScript interface?

• By assigning values directly

• By using the 'function' keyword

• By using the 'var' keyword

• By specifying the data type only