1.Question 1What best describes the network operations that Node.js makes?1 pointNon-blocked operations return immediately without added processing time on the serverNon-blocked operations return in a synchronized manner with added processing time on the serverApplications block every network operation to complete at the same time on the serverBlocked operations return immediately without added processing time on the server2.Question 2Before the Node.js framework receives the HTTP response message from the remote web server, it immediately returns a result for the http.request function call. What does this result state?1 pointThe callback function was called successfully.A request is in progress.The return message will be sent successfully.The response message will be sent successfully.3.Question 3What parameter is optional in an HTTP request?1 pointEvent variable parameterResource variable parameterCallback function parameterLocation function parameter4.Question 4What object do Node.js modules in the SDK pass as the first parameter in a callback function?1 pointIdentityLocationDestinationError5.Question 5What do you pass back in the callback handler to indicate a successful return?1 pointError404 status codeNull objectEmpty string6.Question 6Which function calls the resultCallback callback function to return results to the main application?1 pointstep()aggregate_context()http.request()result()7.Question 7Why can inversion of control be an issue when using callbacks?1 pointInversion of control creates the need for nested callbacksCallbacks sometimes hand over control to third-party code which can make errors hard to identifyInversion of control is used when something needs to be done sequentially which makes code readability difficultInversion of control uses promises which are difficult to implement8.Question 8JSON is the standard format for API data exchange. What relationship does JSON have with Node.js?1 pointMetadata fileStandard representation of native JavaScript objectsJSON_SETCommon data model folder9.Question 9When an error occurs, which state is the promise at?1 pointResolvedRejectedAbortedPending10.Question 10The axios package handles HTTP requests in Node.js and returns a promise object. The promise object has a method that is called after the promise completes. What method does the promise object use?1 pointiforelsethen

In Node.js APIs of Node.JS are which of the following?(1 Point)Both of the aboveNone of the aboveAsynchronousSynchronous

How can you handle asynchronous operations in Node.js? a. Using promises b. All of the above c. Using callbacks d. Using async/await

What does the following do, res.send()?(1 Point)This method specifies what to execute when a get request at the specified route is madeThis method accepts an object as input and returns it to the requesting clientNone of the above This function binds and waits for connections on the provided host and port

What is the purpose of "promises" in Node.js development, and how do they differ from callbacks?(1 Point)Promises are used for debugging code, and they are interchangeable with callbacks.Promises are a way to handle asynchronous operations in a more readable and structured manner compared to callbacks.Promises are a type of callback.Promises are used for caching data

1.Question 1Which of the following is a back-end technology?1 pointWeb APIHTMLBrowserCSS2.Question 2What quality makes it possible for you to run JavaScript applications without compiling?1 pointJavaScript is an interpreted language.The language syntax resembles Java.You can use a text editor to develop JavaScript applications.All modern browsers support JavaScript.3.Question 3Which of the following applications intercepts the call when JavaScript sends a web service request to the Node.js server?1 pointEnterprise JavaREST Web ServiceCSSJSON4.Question 4Which of the following is a difference between ES and CommonJS modules?1 pointCommonJS is a JavaScript language whereas ES is a module specificationCommonJS module files use a .mjs extension whereas ES modules use .jsCommonJS modules are written in JavaScript whereas ES modules are not ES modules use the import() statement whereas CommonJS modules use require(). 5.Question 5How do you handle operation results with Node.js?1 pointSpecify a relative path to the Node.js script from the module directoryWrite callback functions to handle results when the operations completeUse blocking on asynchronous I/O operationsCreate an instance of a web server application6.Question 6What do you use the http.createServer function for?1 pointTo create an instance of a web serverTo develop an anonymous function to handle requests and responsesTo import a Node.js moduleTo specify a main script for your module7.Question 7Which core Node.js module can be used for input and output (I/O)?1 pointutilfsURLhttp8.Question 8Which is an aspect of Node Package Manager (NPM)?1 pointIt manages the versioning of source codeIt creates a package.json file in the project’s root directoryIt functions as a command line interface for installing packagesIt writes metadata to a package.json file9.Question 9What do you use the require function for?1 pointTo specify a main script for your moduleTo import a Node.js moduleTo develop an anonymous function to handle requests and responsesTo create an instance of a web server10.Question 10What happens when a module does not have a package.json file?1 pointThe require statement assumes that scripts have a file extension of js.The relative path to the Node.js script changes to an absolute path from the module directory.There is no module manifest.Node.js assumes that the main class is named index.js.