How can you optimize the rendering performance of template engines like EJS and Pug?

caching
Use synchronous rendering
Minimize template complexity
Avoid template engines

To optimize the rendering performance of template engines like EJS and Pug, enabling caching is a common approach. This allows the templates to be compiled once and reused, reducing rendering time. Additionally, minimizing template complexity and avoiding synchronous rendering can also improve performance. However, completely avoiding template engines may not be practical in many web applications.

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What is the primary role of the app object in an Express application

The app object handles routing and middleware functions.
The app object initializes the Node.js server.
The app object manages the database connections
The app object controls the client-side code.

The primary role of the app object in an Express application is to handle routing and middleware functions. It defines the routes for handling different HTTP requests (GET, POST, etc.) and can use middleware to add functionality to these routes, such as authentication or error handling. The other options do not accurately describe the role of the app object in Express.

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Which of the following is a primary feature of a testing framework like Mocha or Jest?

Test Automation
Database Management
Graphic Design
Web Development

A primary feature of testing frameworks like Mocha or Jest is Test Automation. These frameworks allow developers to write and run automated tests to verify that their code works correctly. This includes unit tests, integration tests, and more.

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Which of the following is true regarding the 'this' keyword inside an arrow function?

The 'this' keyword in an arrow function refers to the global object.
The 'this' keyword in an arrow function refers to the object that contains the arrow function.
Arrow functions do not have a 'this' keyword.
The 'this' keyword in an arrow function refers to the 'this' value of the containing lexical context.

In arrow functions, the value of 'this' is inherited from the surrounding lexical context, which means it refers to the 'this' value of the containing function or block. Unlike regular functions, arrow functions do not have their own 'this' binding.

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How do you install a specific version of a package using npm?

npm install @
npm get @
npm add @
npm update @

To install a specific version of a package using npm, you should use the npm install @ command. This allows you to specify the exact version you want to install. The other options do not provide the same functionality or may not work as expected.

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Which method of the response object is used to end the response process in an HTTP server?

response.end()
response.finish()
response.complete()
response.stop()

The response.end() method is used to end the response process in an HTTP server. It finalizes the response and sends it to the client. The other options are not valid methods for ending the response.

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How do you include partial views in EJS templates?

<%- include('partial') %>
<% include('partial') %>
<% partial('partial') %>
<%- partial('partial') %>

In EJS, you can include partial views using the <%- include('partial') %> syntax. This allows you to reuse and insert content from other EJS files into your main template, helping you create modular and maintainable views. The other options are not the correct syntax for including partials in EJS.

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The ______ command can be used to update the package.json file to match the actual versions installed in the node_modules directory.

npm install
npm update
npm sync
npm check

The npm update command can be used to update the package.json file to match the actual versions installed in the node_modules directory. This command will update the version numbers of packages in package.json based on the versions currently installed.

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To optimize CRUD operations in a high-write-load scenario, employing ______ strategies like write-behind caching can be effective.

Caching
Synchronization
Scaling
Indexing

To optimize CRUD operations, caching strategies like write-behind caching can be effective, where data is cached and written back to the database asynchronously. Caching reduces the need to access the database for every write operation, improving performance.

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How can you send JSON data as a response using the http module in Node.js?

response.sendJSON(jsonDat
response.write(JSON.stringify(jsonData))
response.json(jsonData)
response.send(jsonData)

To send JSON data as a response using the http module in Node.js, you should use response.write(JSON.stringify(jsonData)). This method writes the JSON data as a string to the response. The other options are not valid methods for sending JSON data in the http module.

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