1.Question 1The Node.js framework doesn't provide many features for building web apps. What do developers rely on to extend Node.js features?1 pointExternal libraries and packagesTimely updatesJSONJavaScript2.Question 2One disadvantage of manual parsing is that string matching ignores the XML data structure. However, depending on XML data complexity, string matching might be more efficient than what?1 pointAn XML root elementAn XML tree of the dataAn XML attribute structureNo alternative: string matching is never more efficient.3.Question 3Which Node.js package can parse a string of XML elements into a JavaScript object?1 pointxml2jsAsync.jsXML-JSExpress.js4.Question 4Which web application framework is based on the Node.js runtime environment?1 pointXML-JSAsync.jsJSONExpress5.Question 5The Node.js framework treats HTTP requests at a lower network level. In contrast, Express implements an app class for what purpose?1 pointParse through a network pathLookup web servicesMap to a web resource pathAccess a URL6.Question 6What do you call to create a web server object to listen for incoming requests on a port?1 pointapp.listenapp.requesthttp.viewhttp.name7.Question 7Which of the following kind of task is middleware most useful for?1 pointParsing stringsPerforming large calculationsRoutingError handling8.Question 8Which type of authentication is widely used for password recovery by providing a magic link to the user?1 pointSession-basedSingle Sign OnToken-basedPasswordless9.Question 9Which statement regarding the jsonwebtoken.verify() method is true?1 pointIt is used to return a responseIt is used to generate a JSON web tokenIt is used to verify a JSON web tokenIt is used to return an HTTP status code10.Question 10Which library and module are suited for black-box testing REST APIs?1 pointMocha/SuperTestKoa/SuperTestExpress/TestAPIPostman/TestAPICoursera Honor Code  Learn moreI, VANKADARI SAI SREE SUSHMITHA, understand that submitting work that isn’t my own may result in permanent failure of this course or deactivation of my Coursera account.SubmitSave draftLikeDislikeReport an issue

Advantages of node js

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.

What is Node.js?A cross-platform runtime environmentA client-side scripting languageA database management systemA web browser

Question 1What can a JavaScript library like jQuery do for you? 1 pointDebug HTML errors Save development time Save data to a database Help in version control 2.Question 2True or false? Inversion of control helps you to create standardized apps. 1 pointFalse True 3.Question 3Which of the following is performed by a build tool? 1 pointInstalling packages Storing code Providing code for reuse Transforming source code into binaries 4.Question 4Fill in the blank. Package managers make the end-user’s life easy by _______________. 1 pointfixing errors in code automatically backing up data downloading and installing packages from repositories securing applications 5.Question 5True or false? Software stacks always consist of the following three layers: presentation, business logic, and data. 1 pointTrue False

features of express js