TypeScript Basics

1/25 Which of the following filenames is the extension for typescript?
- .tt
- .nod
- .ts
- .txt
2/25 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.
3/25 What variable scopes are available in TypeScript?
- Global Scope
- Local Scope
- Class Scope
- All of the above
4/25 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
5/25 A typescript may be installed or managed through…
- Tag
- Nmp
- Space
- Void
6/25 What are considered the types of access modifiers supported by TypeScript?
- Public
- Private
- Protected
- All of the above
7/25 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
8/25 In TypeScript, which access modifier makes members accessible only within their declaring class?
- Private
- Public
- Protected
- Internal
9/25 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
10/25 What is the result of compiling a TypeScript file with no type errors?
- JavaScript file with the same functionality
- TypeScript file with enhanced performance
- An executable binary file
- No output, as TypeScript is only for type checking
11/25 What TypeScript feature is used for defining a variable that can have one of a set of named constants?
- Enum
- Union type
- Interface
- Tuple
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 What TypeScript feature allows for defining a contract for a class to implement?
- Interfaces
- Types
- Classes
- Decorators
15/25 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
16/25 Which command is used to compile a TypeScript file?
- ts-compile
- typescript
- tsc
- ts-run
17/25 Which of the following is true about TypeScript's compatibility with JavaScript?
- TypeScript is incompatible with JavaScript
- TypeScript can use JavaScript libraries
- JavaScript code must be rewritten to use in TypeScript
- TypeScript does not support JavaScript syntax
18/25 What is the key advantage of using TypeScript over JavaScript?
- Faster runtime execution
- Type safety and easier debugging
- Support for older browsers
- Smaller file size
19/25 In TypeScript, which is used to define a variable that can hold any type but only one type once set?
- any
- var
- let
- generic
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 Which operator is used for type assertions in TypeScript?
- as
- is
- typeof
- instanceof
22/25 Which method is used to convert a TypeScript file to JavaScript?
- ts-compile
- tsc
- ts-convert
- typescript-compile
23/25 What TypeScript feature allows for custom type checks at compile time?
- Type Guards
- Interfaces
- Decorators
- Mixins
24/25 Which is not a valid TypeScript data type?
- undefined
- number
- bigint
- byte
25/25 What is the TypeScript utility type used for constructing a type with a set of properties from another type?
- Partial
- Readonly
- Record
- Pick
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TypeScript Basics

1/25 Which of the following filenames is the extension for typescript?

2/25 The advantages of Typescript are...

3/25 What variable scopes are available in TypeScript?

4/25 Which of the options below power the interactive TypeScript experience in Visual Studio, Vs Code, Sublime, the TypeScript playground and other editor.

5/25 A typescript may be installed or managed through…

6/25 What are considered the types of access modifiers supported by TypeScript?

7/25 What will be output of the following expression?

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

9/25 Which TypeScript feature allows for better type inference by analyzing the flow of values in the code?

10/25 What is the result of compiling a TypeScript file with no type errors?

11/25 What TypeScript feature is used for defining a variable that can have one of a set of named constants?

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 What TypeScript feature allows for defining a contract for a class to implement?

15/25 In TypeScript, what is a Tuple?

16/25 Which command is used to compile a TypeScript file?

17/25 Which of the following is true about TypeScript's compatibility with JavaScript?

18/25 What is the key advantage of using TypeScript over JavaScript?

19/25 In TypeScript, which is used to define a variable that can hold any type but only one type once set?

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

21/25 Which operator is used for type assertions in TypeScript?

22/25 Which method is used to convert a TypeScript file to JavaScript?

23/25 What TypeScript feature allows for custom type checks at compile time?

24/25 Which is not a valid TypeScript data type?

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