TypeScript Basics

1/25 Which of the following companies has developed and designed TypeScript?
- Amazon
- TypeScript
- Microsoft
- Oracle
2/25 Which of the computer programming languages below has influenced the creation of typescript?
- JavaScript
- Java
- C#
- All of the above
3/25 Which of the options below power the interactive TypeScript experience in Visual Studio, Vs Code, Sublime, the TypeScript playground and other editor.
- TypeScript main
- TypeScript language
- TypeScript compiler
- TypeScript method
4/25 A typescript may be installed or managed through…
- Tag
- Nmp
- Space
- Void
5/25 What object oriented terms does Typescript support?
- Interfaces
- Classes
- Modules
- All of the above
6/25 Which of the following is a Typescript feature?
- Typescript can be compiled to all major versions of Javascript(ES3,ES5,ES6,ES7).
- Once can use Typescript for cross -browser development. It is an open source project.
- Typescript is considered a superset of JavaScript, providing typed nature to the code.
- All of the above.
7/25 What does Typescript use for anonymous functions?
- "dot" syntax
- "arrow" syntax
- none of the above
8/25 What will be output of the following expression?
```
let a:string=47; 

     console.log( " Value of a= " +a);
```
- Value of a=47
- Value of a=0
- Value of a=
- None of the above
9/25 Can alert() be used in TypeScript?
- Yes
- No
10/25 What TypeScript feature is used to add static type checking to JavaScript arrays?
- Generic Types
- Union Types
- Tuple Types
- Any Type
11/25 Which TypeScript feature allows for better type inference by analyzing the flow of values in the code?
- Control Flow Analysis
- Type Guards
- Decorators
- Mapped Types
12/25 How can TypeScript enhance code maintainability compared to JavaScript?
- By enabling stronger typing
- By executing faster
- By reducing the number of lines of code
- By incorporating more libraries
13/25 How does TypeScript enhance debugging in comparison to plain JavaScript?
- By providing more detailed error messages during compile time
- By eliminating the need for debugging
- By automatically correcting syntax errors
- By increasing runtime performance
14/25 How do you access a private class member in TypeScript?
- Using the 'private' keyword
- Through public methods of the class
- By directly accessing it outside the class
- Private members cannot be accessed
15/25 What TypeScript utility type makes all properties of an object optional?
- Partial
- Readonly
- Record
- Required
16/25 Which TypeScript feature is used to ensure function parameters match the expected type?
- Type assertions
- Type inference
- Type annotations
- Type guards
17/25 In TypeScript, which operator is used for type assertion?
- :
- as
- =
- ->
18/25 How can you declare a variable in TypeScript whose value can never be changed?
- By using the 'final' keyword
- By using the 'immutable' keyword
- By using the 'const' keyword
- By using the 'readonly' keyword
19/25 What TypeScript feature allows for specifying an array of multiple data types?
- Union Types
- Generics
- Enum
- Any
- Tuple
20/25 Which TypeScript utility type constructs a type by picking the set of properties from another type?
- Partial
- Omit
- Pick
- Record
- Exclude
21/25 In TypeScript, which of the following is a correct way to define an enum?
- enum Direction { Up, Down, Left, Right }
- enum Direction = { Up, Down, Left, Right }
- Direction = ['Up', 'Down', 'Left', 'Right']
- enum Direction ( Up, Down, Left, Right )
22/25 What TypeScript feature allows for custom type checks at compile time?
- Type Guards
- Interfaces
- Decorators
- Mixins
23/25 Which is not a valid TypeScript data type?
- undefined
- number
- bigint
- byte
24/25 In TypeScript, which operator is used for type assertions?
- as
- typeof
- instanceof
- <>
25/25 Which TypeScript feature is used to describe the shape of an object?
- Type alias
- Interface
- Class
- Function
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TypeScript Basics

1/25 Which of the following companies has developed and designed TypeScript?

2/25 Which of the computer programming languages below has influenced the creation of typescript?

3/25 Which of the options below power the interactive TypeScript experience in Visual Studio, Vs Code, Sublime, the TypeScript playground and other editor.

4/25 A typescript may be installed or managed through…

5/25 What object oriented terms does Typescript support?

6/25 Which of the following is a Typescript feature?

7/25 What does Typescript use for anonymous functions?

8/25 What will be output of the following expression?

9/25 Can alert() be used in TypeScript?

10/25 What TypeScript feature is used to add static type checking to JavaScript arrays?

11/25 Which TypeScript feature allows for better type inference by analyzing the flow of values in the code?

12/25 How can TypeScript enhance code maintainability compared to JavaScript?

13/25 How does TypeScript enhance debugging in comparison to plain JavaScript?

14/25 How do you access a private class member in TypeScript?

15/25 What TypeScript utility type makes all properties of an object optional?

16/25 Which TypeScript feature is used to ensure function parameters match the expected type?

17/25 In TypeScript, which operator is used for type assertion?

18/25 How can you declare a variable in TypeScript whose value can never be changed?

19/25 What TypeScript feature allows for specifying an array of multiple data types?

20/25 Which TypeScript utility type constructs a type by picking the set of properties from another type?

21/25 In TypeScript, which of the following is a correct way to define an enum?

22/25 What TypeScript feature allows for custom type checks at compile time?

23/25 Which is not a valid TypeScript data type?

24/25 In TypeScript, which operator is used for type assertions?

25/25 Which TypeScript feature is used to describe the shape of an object?