The package manager for Node.js, and public registry of JavaScript modules

What does the `git merge` command do?

Integrates all of the commits from one branch into another

Which three elements must a route have in Express?

HTTP method, path, handler function

What is `package.json` used for?

Storing a package's metadata, such as its name, version, and dependencies

What is middleware in Express?

Functions that are run between receiving a request and sending a response

Why is it important for Node.js to handle asynchronous operations?

For long-running tasks to be executed without blocking other operations

How do you import an npm package called `library` (that is installed in `node_modules/`) when using ES modules?

`import library from "library";`

What is a design pattern?

A common way of structuring the solution to a problem

A server-side web framework for Node

You create a PR on GitHub from `feature-branch` to `main`, but can't merge it due to a conflict. How should you fix it?

Pull on `main`, merge to `feature-branch`, then push `feature-branch`

Which situation causes a merge conflict?

2 commits change the same code, and git can't figure out the correct result

An asynchronous, event-driven environment for running JavaScript

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Quiz 8: Node.js, npm, Express & Gitflow

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Questions 22

Answers

1
When starting a new Node.js project, which command will create a `package.json` file?
`npm create package.json`
`git init`
`git add package.json`
`npm init`
2
How do you export something called `myExport` when using ES modules?
`exports.myExport = default;`
`export(myExport);`
`export { myExport };`
`module.exports = myExport;`
3
In what directory are the dependencies of a JavaScript package installed?
`src/`
`dependencies/`
`node_modules/`
`node_packages/`
4
Which git command fetches and merges new commits from a remote branch into a local branch?
`git fetch`
`git integrate`
`git push`
`git pull`
5
What is npm?
The package manager for Node.js, and public registry of JavaScript modules
A cloud service for hosting JavaScript packages, like GitHub
Node Performance Manager, a performance measurement tool for JavaScript
A format for plain text files, similar to JSON
6
What does the `git merge` command do?
Integrates all of the commits from one branch into another
Opens a pull request for a set of changes
Merges a specified commit from a source branch into a target branch
Enables a developer to interactively rewrite the commit history of a branch
7
Which three elements must a route have in Express?
HTTP method, URL, output
HTTP method, path, handler function
get, location, response
action, endpoint, request object
8
In an Express route handler, which property can be used to access query parameters from the request URL?
`req.params`
`res.queryString`
`req.query`
`useParams()`
9
What is `package.json` used for?
Storing a package's metadata, such as its name, version, and dependencies
It is an empty file indicating the containing directory is an npm package
Version control of a package's source code
Storing installation instructions, like a README
10
What is middleware in Express?
A library that allows express to serve static files
A pattern for handling authentication
A package that routes client requests to the server
Functions that are run between receiving a request and sending a response
11
Why is it important for Node.js to handle asynchronous operations?
Node.js runs JS code outside the browser, which is an async environment
A web server must be able to handle multiple clients efficiently
It is unknown when a user will click on a button
For long-running tasks to be executed without blocking other operations
12
Which snippet configures a middleware function in Express to parse the body of a POST request?
`app.use(express.static('/post'))`
`app.use(express.json())`
`app.use(req.body)`
`app.use(express.body())`
13
True or false: When a Pull Request is merged on GitHub, those changes automatically appear in the local repository.
True
False
14
What does CORS stand for?
Cross-Origin Request Security
Cross-Origin Resource Sharing
Crossover Redundancy System
Collaborative Open Research Standard
15
How do you import an npm package called `library` (that is installed in `node_modules/`) when using ES modules?
`import { library };`
`include "moduleNameOrPath";`
`require("library");`
`import library from "library";`
16
Which of these are all valid response methods in Express?
`json`, `xml`, `html`
`send`, `receive`, `reply`
`status`, `response`, `xml`
`send`, `json`, `status`
17
What is a design pattern?
A strategy for developing effective algorithms using pseudocode
A pattern used to style web components
A common way of structuring the solution to a problem
A set of best practices used when designing user interfaces
18
What is Express?
A library used for scraping websites
An alternative browser to Chrome
A JavaScript HTTP client library
A server-side web framework for Node
19
You create a PR on GitHub from `feature-branch` to `main`, but can't merge it due to a conflict. How should you fix it?
Pull on `main`, merge to `feature-branch`, then push `feature-branch`
Check out the `main` branch, merge `feature-branch`, then push `main`
Send a strongly-worded email to the lead dev asking them to merge the PR
Close the PR, create a new branch, fix the conflict, then create a new PR
20
Which situation causes a merge conflict?
A developer attempts to merge older commits into a branch
2 commits change the same code, and git can't figure out the correct result
A developer runs `git merge` to combine two different files
A PR is opened for a feature that doesn't have the latest changes from main
21
What is Node.js?
A development environment for running programs in any language
A program that is used exclusively for creating web servers in JavaScript
A program for creating interactive console-style games
An asynchronous, event-driven environment for running JavaScript
22
Which git command creates and checks out a new branch?
`git checkout-branch <branch-name>`
`git add <branch-name>`
`git checkout -b <branch-name>`
`git switch <branch-name>`

Quiz 8: Node.js, npm, Express & Gitflow Flashcards | StudBud