2022 Current CRT-600 dumps Preparation through Our Practice Test [Q50-Q73]

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2022 Current CRT-600 dumps Preparation through Our Practice Test

100% Reliable Microsoft CRT-600 Exam Dumps Test Pdf Exam Material

Salesforce CRT-600 Exam Syllabus Topics:

Topic	Details
Topic 1	JavaScript Basics Working with Strings, Numbers, and Dates
Topic 2	Objects, Functions, and Classes Using JavaScript Modules Declaring Classes
Topic 3	Browser and Events Document Object Model Browser Dev Tools
Topic 4	Server Side JavaScript Debugging in Node.js, Node.js Libraries
Topic 5	Creating Objects, Object Prototypes, Defining Functions
Topic 6	Asynchronous Programming Callback Functions Promises and Async Await
Topic 7	Type Conversion (explicit and implicit) Working with JSON Data Types and Variables

NO.50 developer removes the HTML class attribute from the checkout button, so now it is simply:
<button>Checkout</button>.
There is a test to verify the existence of the checkout button, however it looks for a button with class= “blue”. The test fails because no such button is found.
Which type of test category describes this test?

True positive

True negative

False positive

False negative

NO.51 Refer to the code below:
Function Person(firstName, lastName, eyecolor) {
this.firstName =firstName;
this.lastName = lastName;
this.eyeColor = eyeColor;
}
Person.job = ‘Developer’;
const myFather = new Person(‘John’, ‘Doe’);
console.log(myFather.job);
What is the output after the code executes?

ReferenceError: eyeColor is not defined

ReferenceError: assignment to undeclared variable “Person”

Developer

Undefined

NO.52 Refer to the code below:
Const pi = 3.1415326,
What is the data type of pi?

Double

Number

Decimal

Float

NO.53 Refer to the following code:
Let sampleText = ‘The quick brown fox jumps’;
A developer needs to determine if a certain substring is part of a string.
Which three expressions return true for the given substring ?
Choose 3 answers

sampleText.includes(‘fox’);

sampleText.includes(‘ quick ‘, 4);

sampleText.includes(‘ Fox ‘, 3)

sampleText.includes(‘ fox ‘);

sampleText.includes(‘ quick ‘) !== -1;

NO.54 Given the requirement to refactor the code above to JavaScript class format, which class definition is correct?

console.log(10/ Number(‘5’));

console.log(parseInt(‘two’));

console.log(10/ ”five);

console.log(10/0);

NO.55 Which function should a developer use to repeatedly execute code at a fixed interval ?

setIntervel

setTimeout

setPeriod

setInteria

NO.56 Cloud Kicks has a class to represent items for sale in an online store, as shown below:
Class Item{
constructor (name, price){
this.name = name;
this.price = price;
}
formattedPrice(){
return ‘s’ + String(this.price);}}
A new business requirement comes in that requests a ClothingItem class that should have all of the properties and methods of the Item class but will also have properties that are specific to clothes.
Which line of code properly declares the clothingItem class such that it inherits from Item?

Class ClothingItem implements Item{

Class ClothingItem {

Class ClothingItem super Item {

Class ClothingItem extends Item {

NO.57 A developer implements a function that adds a few values.
Function sum(num) {
If (num == undefined) {
Num =0;
}
Return function( num2, num3){
If (num3 === undefined) {
Num3 =0 ;
}
Return num + num2 + num3;
}
}
Which three options can the developer invoke for this function to get a return value of 10 ?
Choose 3 answers

Sum () (20)

Sum (5, 5) ()

sum() (5, 5)

sum(5)(5)

sum(10) ()

NO.58 A developer has a formatName function that takes two arguments, firstName and lastName and returns a string. They want to schedule the function to run once after five seconds.
What is the correct syntax to schedule this function?

setTimeout (formatName(), 5000, “John”, “BDoe”);

setTimeout (formatName(‘John’, ”Doe’), 5000);

setTimout(() => { formatName(“John’, ‘Doe’) }, 5000);

setTimeout (‘formatName’, 5000, ‘John”, “Doe’);

NO.59 Given two expressions var1 and var2. What are two valid ways to return the logical AND of the two expressions and ensure it is data type Boolean ?
Choose 2 answers:

Boolean(var1 && var2)

var1 && var2

var1.toBoolean() && var2toBoolean()

Boolean(var1) && Boolean(var2)

NO.60 Given the following code:
document.body.addEventListener(‘ click ‘, (event) => {
if (/* CODE REPLACEMENT HERE */) {
console.log(‘button clicked!’);
)
});
Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a button on page is clicked?

Event.clicked

e.nodeTarget ==this

event.target.nodeName == ‘BUTTON’

button.addEventListener(‘click’)

NO.61 Which two code snippets show working examples of a recursive function?
Choose 2 answers

Let countingDown = function(startNumber) {
If ( startNumber >0) {
console.log(startNumber) ;
return countingDown(startNUmber);
} else {
return startNumber;
}};

Function factorial ( numVar ) {
If (numVar < 0) return;
If ( numVar === 0 ) return 1;
return numVar -1;

Const sumToTen = numVar => {
If (numVar < 0)
Return;
return sumToTen(numVar + 1)};

Const factorial =numVar => {
If (numVar < 0) return;
If ( numVar === 0 ) return 1;
return numVar * factorial ( numVar – 1 );
};

NO.62 Which two console logs outputs NaN ?
Choose 2 answers

console.log(10/ Number(‘5’));

console.log(parseInt(‘two’));

console.log(10/ ”five);

console.log(10/0);

NO.63 Refer to code below:
Function muFunction(reassign){
Let x = 1;
var y = 1;
if( reassign ) {
Let x= 2;
Var y = 2;
console.log(x);
console.log(y);}
console.log(x);
console.log(y);}
What is displayed when myFunction(true) is called?

2 2 1 1

2 2 undefined undefined

2 2 1 2

2 2 2 2

NO.64 What is the result of the code block?

The console logs only ‘flag’.

The console logs ‘flag’ and another flag.

An error is thrown.

The console logs ‘flag’ and then an error is thrown.

NO.65 A developer wants to create an object from a function in the browser using the code below:
Function Monster() { this.name = ‘hello’ };
Const z = Monster();
What happens due to lack of the new keyword on line 02?

The z variable is assigned the correct object.

The z variable is assigned the correct object but this.name remains undefined.

Window.name is assigned to ‘hello’ and the variable z remains undefined.

Window.m is assigned the correct object.

NO.66 A developer is asked to fix some bugs reported by users. To do that, the developer adds a breakpoint for debugging.
Function Car (maxSpeed, color){
This.maxspeed =masSpeed;
This.color = color;
Let carSpeed = document.getElementById(‘ CarSpeed’);
Debugger;
Let fourWheels =new Car (carSpeed.value, ‘red’);
When the code execution stops at the breakpoint on line 06, which two types of information are available in the browser console ?
Choose 2 answers:

The values of the carSpeed and fourWheels variables

A variable displaying the number of instances created for the Car Object.

The style, event listeners and other attributes applied to the carSpeed DOM element

The information stored in the window.localStorage property

NO.67 A developer creates a simple webpage with an input field. When a user enters text in the input field and clicks the button, the actual value of the field must be displayed in the console.
Here is the HTML file content:
<input type =” text” value=”Hello” name =”input”>
<button type =”button” >Display </button>
The developer wrote the javascript code below:
Const button = document.querySelector(‘button’);
button.addEvenListener(‘click’, () => (
Const input = document.querySelector(‘input’);
console.log(input.getAttribute(‘value’));
When the user clicks the button, the output is always “Hello”.
What needs to be done make this code work as expected?

Replace line 04 with console.log(input .value);

Replace line 03 with const input = document.getElementByName(‘input’);

Replace line 02 with button.addEventListener(“onclick”, function() {

Replace line 02 with button.addCallback(“click”, function() {

NO.68 developer creates a new web server that uses Node.js. It imports a server library that uses events and callbacks for handling server functionality.
The server library is imported with require and is made available to the code by a variable named server. The developer wants to log any issues that the server has while booting up.
Given the code and the information the developer has, which code logs an error at boost with an event?

Server.catch ((server) => {
console.log(‘ERROR’, error);
});

Server.error ((server) => {
console.log(‘ERROR’, error);
});

Server.on (‘error’, (error) => {
console.log(‘ERROR’, error);
});

Try{
server.start();
} catch(error) {
console.log(‘ERROR’, error);
}

NO.69 Universal Containers recently launched its new landing page to host a crowd-funding campaign. The page uses an external library to display some third-party ads. Once the page is fully loaded, it creates more than 50 new HTML items placed randomly inside the DOM, like the one in the code below:

All the elements includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.

Use the DOM inspector to prevent the load event to be fired.

Use the browser to execute a script that removes all the element containing the class ad-library-item.

Use the DOM inspector to remove all the elements containing the class ad-library-item.

Use the browser console to execute a script that prevents the load event to be fired.

NO.70 Refer to the code below:

What is the value of result when the code executes?

10-10

5-5

10-5

5-10

NO.71 A developer wants to leverage a module to print a price in pretty format, and has imported a method as shown below:
Import printPrice from ‘/path/PricePrettyPrint.js’;
Based on the code, what must be true about the printPrice function of the PricePrettyPrint module for this import to work ?

printPrice must be be a named export

printPrice must be an all export

printPrice must be the default export

printPrice must be a multi exportc

NO.72 A developer wants to use a module named universalContainersLib and then call functions from it.
How should a developer import every function from the module and then call the functions foo and bar?

import * from ‘/path/universalContainersLib.js’;
universalContainersLib. foo ()7
universalContainersLib.bar ();

import {foo,bar} from ‘/path/universalCcontainersLib.js’;
foo():
bar()?

import all from ‘/path/universalContainersLib.js’;
universalContainersLib.foo();
universalContainersLib.bar ();

import * as lib from ‘/path/universalContainersLib.js’;
lib.foo();
lib. bar ();

NO.73 Refer to the code below:
function foo () {
const a =2;
function bat() {
console.log(a);
}
return bar;
}
Why does the function bar have access to variable a ?

Inner function’s scope

Hoisting

Outer function’s scope

Prototype chain