100% Free DEX602 Practice Exam Questions and Answers

Stay Ahead with Latest DEX602 Javascript Developer Practice Test Questions 2026

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Total 217 Questions | Updated On: Oct 26, 2026
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Question 1

Refer to the following code:11What will the console show when the button is clicked?


Answer: D
Question 2

Refer to the code below:Const resolveAfterMilliseconds = (ms) => Promise.resolve (setTimeout (( => console.log(ms), ms ));Const aPromise = await resolveAfterMilliseconds(500);Const bPromise = await resolveAfterMilliseconds(500);Await aPromise, wait bPromise;What is the result of running line 05?


Answer: B
Question 3

Why would a developer specify a package.jason as a developed forge instead of a dependency ?


Answer: B
Question 4

Given the code below:01 function GameConsole (name) {02 this.name = name;03 }0405 GameConsole.prototype.load = function(gamename) {06 console.log( ` $(this.name) is loading a game : $(gamename) ...`);07 )08 function Console 16 Bit (name) {09 GameConsole.call(this, name) ;10 }11 Console16bit.prototype = Object.create ( GameConsole.prototype) ;12 //insert code here13 console.log( ` $(this.name) is loading a cartridge game : $(gamename) ...`);14 }15 const console16bit = new Console16bit(' SNEGeneziz ');16 console16bit.load(' Super Nonic 3x Force ');What should a developer insert at line 15 to output the following message using themethod ?> SNEGeneziz is loading a cartridge game: Super Monic 3x Force . . .


Answer: B
Question 5

Which javascript methods can be used to serialize an object into a string and deserializea JSON string into an object, respectively?


Answer: A
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Total 217 Questions | Updated On: Oct 26, 2026
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