TypeScript Basics

1/25 What is the typing principle of typescript?
- Gradual
- Duck
- Dynamic
- All of the above
2/25 Which of the following filenames is the extension for typescript?
- .tt
- .nod
- .ts
- .txt
3/25 The advantages of Typescript are...
- It assists in code structuring.
- It applies class -based object oriented programming.
- It introduces coding guidelines.
- All of the above.
4/25 ..... are the way of organizing a code in TypeScript.
- Methods
- Modules
- Arrows
- Classes
5/25 The TypeScript components are....
- TypeScript Compiler
- TypeScript Language Service
- TypeScript Language
- All of the above
6/25 How can you declare a read-only property in a TypeScript class?
- Using the 'readonly' keyword
- Using the 'const' keyword
- Using the 'static' keyword
- Using the 'final' keyword
7/25 What is the TypeScript syntax for defining an enumeration?
```
enum Direction { Up, Down, Left, Right }
```
- Correct as is
- enum Direction = { Up, Down, Left, Right }
- enum Direction [ Up, Down, Left, Right ]
- enum { Up, Down, Left, Right } as Direction
8/25 In TypeScript, which access modifier makes members accessible only within their declaring class?
- Private
- Public
- Protected
- Internal
9/25 In TypeScript, which method decorator can be used to bind 'this' to the class instance?
- .bind()
- .apply()
- .call()
- .link()
10/25 How does TypeScript support asynchronous programming?
- Using `async` and `await` keywords
- Callback functions
- Synchronous functions
- TypeScript does not support asynchronous programming
11/25 What is the TypeScript utility type used for creating a type with all properties of an existing type set to optional?
- Partial<T>
- Required<T>
- Readonly<T>
- Pick<T>
12/25 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
13/25 In TypeScript, which keyword is used to declare a constant variable?
- let
- var
- const
- static
14/25 In TypeScript, which operator is used for type assertion?
- :
- as
- =
- ->
15/25 Which of the following is not a valid TypeScript data type?
- number
- boolean
- string
- character
16/25 In TypeScript, what is a Tuple?
- A type of function
- An array with fixed number of elements
- A JSON object
- A method for type casting
17/25 Which TypeScript utility type constructs a type by picking the set of properties from another type?
- Partial
- Omit
- Pick
- Record
- Exclude
18/25 Which operator is used for type assertions in TypeScript?
- as
- is
- typeof
- instanceof
19/25 What is the purpose of the 'never' type in TypeScript?
- To represent any type of value
- To represent values that never occur
- To declare a variable without a type
- To define optional parameters
20/25 Which is not a valid TypeScript data type?
- undefined
- number
- bigint
- byte
21/25 In TypeScript, which access modifier makes a member visible only within its containing class?
- Public
- Private
- Protected
- Static
22/25 What is the TypeScript utility type used for constructing a type with a set of properties from another type?
- Partial
- Readonly
- Record
- Pick
23/25 In TypeScript, which operator is used for type assertions?
- as
- typeof
- instanceof
- <>
24/25 How do you declare a readonly array in TypeScript?
- const[]
- readonly[]
- immutable[]
- fixed[]
25/25 In TypeScript, what is the purpose of the 'keyof' keyword?
- To create an enum
- To specify a generic constraint
- To define a method
- To declare a variable
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TypeScript Basics

1/25 What is the typing principle of typescript?

2/25 Which of the following filenames is the extension for typescript?

3/25 The advantages of Typescript are...

4/25 ..... are the way of organizing a code in TypeScript.

5/25 The TypeScript components are....

6/25 How can you declare a read-only property in a TypeScript class?

7/25 What is the TypeScript syntax for defining an enumeration?

8/25 In TypeScript, which access modifier makes members accessible only within their declaring class?

9/25 In TypeScript, which method decorator can be used to bind 'this' to the class instance?

10/25 How does TypeScript support asynchronous programming?

11/25 What is the TypeScript utility type used for creating a type with all properties of an existing type set to optional?

12/25 How does TypeScript enhance debugging in comparison to plain JavaScript?

13/25 In TypeScript, which keyword is used to declare a constant variable?

14/25 In TypeScript, which operator is used for type assertion?

15/25 Which of the following is not a valid TypeScript data type?

16/25 In TypeScript, what is a Tuple?

17/25 Which TypeScript utility type constructs a type by picking the set of properties from another type?

18/25 Which operator is used for type assertions in TypeScript?

19/25 What is the purpose of the 'never' type in TypeScript?

20/25 Which is not a valid TypeScript data type?

21/25 In TypeScript, which access modifier makes a member visible only within its containing class?

22/25 What is the TypeScript utility type used for constructing a type with a set of properties from another type?

23/25 In TypeScript, which operator is used for type assertions?

24/25 How do you declare a readonly array in TypeScript?

25/25 In TypeScript, what is the purpose of the 'keyof' keyword?