How does npm handle version conflicts between dependencies and devDependencies?

It prioritizes devDependencies over dependencies
It prioritizes dependencies over devDependencies
It raises a version conflict error
It automatically resolves conflicts

npm prioritizes dependencies over devDependencies. If there's a version conflict between a package listed in dependencies and the same package listed in devDependencies, the version specified in dependencies takes precedence. This ensures that the application uses the expected versions during production deployment.

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How does normalizing database tables impact the Read and Update operations in CRUD?

Improves Read performance, may complicate Updates
Improves Update performance, may slow down Reads
Has no impact on either Read or Update operations
Improves both Read and Update operations

Normalizing database tables often improves Read performance by reducing data redundancy. However, it may complicate Update operations since data may be spread across multiple tables, requiring joins. Option 2 is not generally true as normalization tends to have a positive impact on Update operations. Option 4 is an oversimplification.

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What does the resolve function do in a JavaScript Promise?

It is called when an error occurs.
It is called when the Promise is rejected.
It is called when the Promise is fulfilled with a value.
It is called to cancel the Promise.

The resolve function in a JavaScript Promise is called when the Promise is fulfilled successfully with a value. It signifies that the asynchronous operation inside the Promise has completed successfully, and the value provided in the resolve function is the result.

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In what scenario would a package be listed in both dependencies and devDependencies?

When the package is a development tool
When it's a runtime dependency
When it's a peer dependency
When it's a transitive dependency

A package can be listed in both dependencies and devDependencies when it's a development tool that is needed during both development and runtime. An example might be a testing library or build tool.

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In Express.js, how can you handle errors occurring in asynchronous code within a route handler?

try-catch
next(error)
return error;
res.error(error)

In Express.js, you can handle errors occurring in asynchronous code within a route handler by calling next(error). This passes the error to the error-handling middleware or the default error handler, allowing you to centralize error handling. Using a try-catch block won't catch asynchronous errors, and the other options are not standard practices for error handling in Express.js.

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Which type of testing focuses on verifying the functionality of individual components in isolation?

Unit Testing
Integration Testing
System Testing
Performance Testing

Unit Testing focuses on verifying the functionality of individual components (or units) in isolation. It helps ensure that each component works correctly on its own.

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Which of the following is the correct syntax for destructuring an array in JavaScript?

let [x, y] = [1, 2];
let {x, y} = [1, 2];
let (x, y) = [1, 2];
let x = [1, 2];

Destructuring an array in JavaScript is done using square brackets []. The correct syntax is let [x, y] = [1, 2];. The other options are either for object destructuring or use incorrect syntax.

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How is the Buffer class in Node.js useful when dealing with binary data?

The Buffer class provides methods to efficiently work with binary data, making it suitable for tasks like reading and writing files, working with network protocols, and handling binary data in memory.
The Buffer class is used for debugging purposes and is not recommended for handling binary data.
The Buffer class is primarily used for string manipulations and should not be used for binary data.
The Buffer class is outdated and has been replaced by Typed Arrays in modern Node.js.

The Buffer class in Node.js is extremely useful when dealing with binary data. It provides methods for efficiently working with raw binary data, making it suitable for tasks such as reading and writing files, working with network protocols, and handling binary data in memory.

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You are tasked with optimizing the build process of a Node.js application. How can the scripts section in the package.json file aid in automating and enhancing the build process?

By adding extensive comments to describe the build steps
By including development dependencies in the scripts section
By defining custom scripts for various build tasks
By removing the scripts section entirely

The scripts section in package.json is used to define custom scripts for various build tasks, test scripts, and more. It aids in automating and enhancing the build process by providing a central place to manage these tasks. Options 1 and 2 are not related to the scripts section, and option 4 is not a recommended approach.

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The continue statement in a loop is used to skip the rest of the loop's body and continue with the next ________.

iteration
condition
loop
statement

The continue statement in a loop is used to skip the remaining part of the current iteration (loop body) and move on to the next iteration. It helps control the flow of a loop.

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