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feat(curriculum): Create TypeScript Quiz (#56460)
Co-authored-by: Ilenia <26656284+ilenia-magoni@users.noreply.github.com> Co-authored-by: Naomi the Technomancer <accounts+github@nhcarrigan.com> Co-authored-by: Lasse Jørgensen <28780271+lasjorg@users.noreply.github.com>
This commit is contained in:
Creflo Coelho
@@ -17,439 +17,454 @@ Answer all of the questions below correctly to pass the quiz.
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#### --text--
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Placeholder question
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What is Typescript?
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#### --distractors--
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Placeholder distractor 1
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A framework used for system programming.
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---
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Placeholder distractor 2
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A database management tool.
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---
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Placeholder distractor 3
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A programming language used for styling websites.
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#### --answer--
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Placeholder answer
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A superset of JavaScript that adds static typing.
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### --question--
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#### --text--
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Placeholder question
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Why should TypeScript be used in a project?
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#### --distractors--
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Placeholder distractor 1
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It eliminates the need for testing in applications.
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---
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Placeholder distractor 2
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It is faster than all other programming languages.
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---
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Placeholder distractor 3
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It makes styling websites easier.
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#### --answer--
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Placeholder answer
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It improves maintainability by adding type definitions to JavaScript.
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### --question--
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#### --text--
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Placeholder question
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What language is TypeScript compiled down to?
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#### --distractors--
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Placeholder distractor 1
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Java
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---
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Placeholder distractor 2
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Python
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---
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Placeholder distractor 3
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C++
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#### --answer--
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Placeholder answer
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JavaScript
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### --question--
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#### --text--
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Placeholder question
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What would be the output of the following code snippet?
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```ts
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function sum(a: number, b: number): number {
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return a + b;
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}
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console.log(sum(2, 3));
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```
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#### --distractors--
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Placeholder distractor 1
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`2 + 3`
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---
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Placeholder distractor 2
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`undefined`
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---
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Placeholder distractor 3
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`Error: Type 'number' is not assignable to type 'string'`
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#### --answer--
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Placeholder answer
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`5`
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### --question--
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#### --text--
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Placeholder question
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What is the primary purpose of an interface in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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To compile TypeScript code into JavaScript.
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---
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Placeholder distractor 2
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To create a new data type.
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---
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Placeholder distractor 3
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To create a new JavaScript Object.
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#### --answer--
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Placeholder answer
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To define the structure of an object.
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### --question--
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#### --text--
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Placeholder question
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Which of the following is NOT a basic primitive in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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string
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---
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Placeholder distractor 2
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boolean
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---
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Placeholder distractor 3
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number
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#### --answer--
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Placeholder answer
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array
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### --question--
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#### --text--
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Placeholder question
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Which of the following correctly defines a literal type in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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`let y: string;`
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---
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Placeholder distractor 2
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`let z: boolean;`
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---
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Placeholder distractor 3
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`let a: number[];`
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#### --answer--
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Placeholder answer
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`let x: 5;`
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### --question--
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#### --text--
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Placeholder question
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What is the primary purpose of the `type` keyword in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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To declare variables.
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---
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Placeholder distractor 2
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To create classes.
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---
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Placeholder distractor 3
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To implement interfaces.
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#### --answer--
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Placeholder answer
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To define custom types.
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### --question--
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#### --text--
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Placeholder question
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Which of the following correctly defines a union type?
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#### --distractors--
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Placeholder distractor 1
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`type Result = Pass && Fail;`
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---
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Placeholder distractor 2
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`type Result = Pass & Fail;`
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---
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Placeholder distractor 3
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`type Result = Pass + Fail;`
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#### --answer--
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Placeholder answer
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`type Result = Pass | Fail;`
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### --question--
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#### --text--
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Placeholder question
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Which of the following capabilities is unique to `interface` and CANNOT be achieved using `type` in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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Defining object shapes.
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---
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Placeholder distractor 2
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Creating union types.
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---
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Placeholder distractor 3
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Creating intersection types.
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#### --answer--
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Placeholder answer
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Declaring class implementations.
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### --question--
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#### --text--
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Placeholder question
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What is the primary purpose of using generics in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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To implement inheritance between classes.
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---
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Placeholder distractor 2
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To define structure of an object.
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---
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Placeholder distractor 3
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To create a new data type.
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#### --answer--
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Placeholder answer
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To write reusable code that can work with multiple types.
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### --question--
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#### --text--
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Placeholder question
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Which of the following is a **proper example** of a generic function in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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`function add(a: number, b: number): number { return a + b; }`
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---
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Placeholder distractor 2
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`function multiply(a: number, b: number): { return a * b; }`
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---
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Placeholder distractor 3
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`function getValue<T>(value: any): any { return value; }`
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#### --answer--
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Placeholder answer
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`function identity<T>(value: T): T { return value; }`
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### --question--
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#### --text--
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Placeholder question
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What is type narrowing in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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Reducing the size of compiled JavaScript.
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---
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Placeholder distractor 2
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Limiting the number of types in a union.
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---
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Placeholder distractor 3
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Removing unused types from a TypeScript project.
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#### --answer--
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Placeholder answer
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To write code that narrows down a union type to a more specific type.
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### --question--
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#### --text--
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Placeholder question
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Which file is typically used to configure TypeScript compiler options?
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#### --distractors--
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Placeholder distractor 1
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`package.json`
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---
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Placeholder distractor 2
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`package.config.json`
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---
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Placeholder distractor 3
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`typescript.config.js`
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#### --answer--
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Placeholder answer
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`tsconfig.json`
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### --question--
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#### --text--
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Placeholder question
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What does the `target` option in the `tsconfig.json` file specify?
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#### --distractors--
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Placeholder distractor 1
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The version of TypeScript to use during compilation.
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---
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Placeholder distractor 2
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The target runtime environment (e.g., Node.js or browser) for the TypeScript code.
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---
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Placeholder distractor 3
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The specific module system to use for imports and exports.
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#### --answer--
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Placeholder answer
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The ECMAScript version to which the TypeScript compiler will transpile the code.
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### --question--
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#### --text--
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Placeholder question
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What does the `noImplicitReturns` option in the `tsconfig.json` file enforce?
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#### --distractors--
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Placeholder distractor 1
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It forces all functions to return a `number`.
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---
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Placeholder distractor 2
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It requires that all functions return either `true` or `false`.
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---
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Placeholder distractor 3
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It prevents using the `any` type in TypeScript code.
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#### --answer--
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Placeholder answer
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It ensures all code paths in a function return a value.
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### --question--
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#### --text--
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Placeholder question
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Which TypeScript option prevents implicit `any` types?
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#### --distractors--
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Placeholder distractor 1
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`noImplicitReturns`
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---
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Placeholder distractor 2
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`alwaysStrict`
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---
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Placeholder distractor 3
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`strictNullChecks`
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#### --answer--
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Placeholder answer
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`noImplicitAny`
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### --question--
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#### --text--
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Placeholder question
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What is the purpose of the `never` type in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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To represent null or undefined.
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---
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Placeholder distractor 2
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To represent any possible value.
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---
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Placeholder distractor 3
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To represent a type that can be anything except null.
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#### --answer--
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Placeholder answer
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To represent the type of values that never occur.
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### --question--
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#### --text--
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Placeholder question
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What will be the output of the following TypeScript code?
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```ts
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enum Color {
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Red,
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Blue,
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}
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console.log(Color.Red, Color.Blue);
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```
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#### --distractors--
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Placeholder distractor 1
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`Red Blue`
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---
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Placeholder distractor 2
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`1, 2`
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---
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Placeholder distractor 3
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`Red 2`
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#### --answer--
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Placeholder answer
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`0 1`
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### --question--
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#### --text--
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Placeholder question
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How can you specify that a function parameter is optional in TypeScript?
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#### --distractors--
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Placeholder distractor 1
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By using the `optional` keyword.
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---
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Placeholder distractor 2
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By setting a default value.
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---
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Placeholder distractor 3
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By using the `any` type.
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#### --answer--
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Placeholder answer
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By adding a `?` after the parameter name
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Block a user