NEW QUESTION 1
Refer to the code below:

Why does the function bar have access to variable a ?

• A. Inner function’s scope
• B. Hoisting
• C. Outer function’s scope
• D. Prototype chain

Answer: C

NEW QUESTION 2
Which statement parses successfully?

• A. JSO
• B. parse (""foo"');
• C. JSON.parse (""foo'");
• D. JSON.parse ("foo");
• E. JSON.parse ("foo");

Answer: A

NEW QUESTION 3
Refer to the code below: Function changeValue(obj) { Obj.value =obj.value/2;
}
Const objA = (value: 10);
Const objB = objA; changeValue(objB); Const result = objA.value;
What is the value of result after the code executes?

• A. 10
• B. Nan
• C. 5
• D. Undefined

Answer: C

NEW QUESTION 4
Refer to the following array: Let arr = [ 1,2, 3, 4, 5];
Which three options result in x evaluating as [3, 4, 5] ? Choose 3 answers.

• A. Let x= arr.filter (( a) => (a<2));
• B. Let x=arr.splice(2,3);
• C. Let x= arr.slice(2);
• D. Let x= arr.filter((a) => ( return a>2 ));
• E. Let x = arr.slice(2,3);

Answer: BCD

NEW QUESTION 5
A developer wants to setup a secure web server with Node.js. The developer creates a directory locally called app-server, and the first file is app-server/index.js
Without using any third-party libraries, what should the developer add to index.js to create the secure web server?

• A. const https =require(‘https’);
• B. const server =require(‘secure-server’);
• C. const tls = require(‘tls’);
• D. const http =require(‘http’);

Answer: A

NEW QUESTION 6
Refer to the following code: 01 function Tiger(){
02 this.Type = ‘Cat’; 03 this.size = ‘large’; 04 }
05
06 let tony = new Tiger(); 07 tony.roar = () =>{
8 console.log(‘They\’re great1’);
9 };
10
11 function Lion(){ 12 this.type = ‘Cat’; 13this.size = ‘large’; 14 }
15
16 let leo = new Lion(); 17 //Insert code here
18 leo.roar();
Which two statements could be inserted at line 17 to enable the function call on line 18? Choose 2 answers.

• A. Leo.roar = () => { console.log(‘They\’re pretty good:’); };
• B. Object.assign(leo,Tiger);
• C. Object.assign(leo,tony);
• D. Leo.prototype.roar = () => { console.log(‘They\’re pretty good:’); };

Answer: AC

NEW QUESTION 7
Which option is true about the strict mode in imported modules?

• A. Add the statement use non-strict, before any other statements in the module to enable not-strict mode.
• B. You can only reference notStrict() functions from the imported module.
• C. Imported modules are in strict mode whether you declare them as such or not.
• D. Add the statement use strict =false; before any other statements in the module to enable not- strict mode.

Answer: B

NEW QUESTION 8
A developer creates a class that represents a blog post based on the requirement that a Post should have a body author and view count.
The Code shown Below: ClassPost {
// Insert code here This.body =body This.author = author;
this.viewCount = viewCount;
}
}
Which statement should be inserted in the placeholder on line 02 to allow for a variable to be set to a new instanceof a Post with the three attributes correctly populated?

• A. super (body, author, viewCount) {
• B. Function Post (body, author, viewCount) {
• C. constructor (body, author, viewCount) {
• D. constructor() {

Answer: C

NEW QUESTION 9
A developer is leading the creation of a new browser application that will serve a single page application. The teamwants to use a new web framework Minimalsit.js. The Lead developer wants to advocate for a more seasoned web framework that already has a community around it.
Which two frameworks should the lead developer advocate for? Choose 2 answers

• A. Vue
• B. Angular
• C. Koa
• D. Express

Answer: BD

NEW QUESTION 10
A team that works on a big project uses npm to deal with projects dependencies. A developer added a dependency does not get downloaded when they executenpm install.
Which two reasons could be possible explanations for this?
Choose 2 answers

• A. The developer missed the option --add when adding the dependency.
• B. The developer added the dependency as a dev dependency, and NODE_ENVIs set to production.
• C. The developer missed the option --save when adding the dependency.
• D. The developer added the dependency as a dev dependency, and NODE_ENV is set to production.

Answer: BCD

NEW QUESTION 11
Considering type coercion, what does the following expression evaluate to? True + ‘13’ + NaN

• A. ‘ 113Nan ’
• B. 14
• C. ‘ true13 ’
• D. ‘ true13NaN ’

Answer: D

NEW QUESTION 12
Given the following code: Let x =(‘15’ + 10)*2;
What is the value of a?

• A. 3020
• B. 1520
• C. 50
• D. 35

Answer: A

NEW QUESTION 13
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:

The developer wrote the javascript code below:

When the user clicks the button, the output is always “Hello”. What needs to be done to make this code work as expected?

• A. Replace line 04 with console.log(input .value);
• B. Replace line 03 with const input = document.getElementByName(‘input’);
• C. Replace line 02 with button.addCallback(“click”, function() {
• D. Replace line 02 withbutton.addEventListener(“onclick”, function() {

Answer: A

NEW QUESTION 14
Refer to following code: class Vehicle { constructor(plate) { This.plate =plate;
}
}
Class Truck extends Vehicle { constructor(plate, weight) {
//Missing code This.weight = weight;
}
displayWeight() {
console.log(‘Thetruck ${this.plate} has a weight of ${this.weight} lb.’);}} Let myTruck = new Truck(‘123AB’, 5000);
myTruck.displayWeight();
Which statement should be added to line 09 for the code to display ‘The truck 123AB has a weight of 5000lb.’?

• A. Super.plate =plate;
• B. super(plate);
• C. This.plate =plate;
• D. Vehicle.plate = plate;

Answer: B

NEW QUESTION 15
A developer wrote a fizzbuzz function that when passed in a number, returns the following:
‘Fizz’ if the number is divisible by 3. ‘Buzz’ if the number is divisible by 5.
‘Fizzbuzz’ if the number is divisible by both 3 and 5. Emptystring if the number is divisible by neither 3 or 5.
Which two test cases will properly test scenarios for the fizzbuzz function? Choose 2 answers

• A. let res = fizzbuzz(5); console.assert ( res === ‘ ’ );
• B. let res = fizzbuzz(15);console.assert ( res ===‘ fizzbuzz ’ )
• C. let res = fizzbuzz(Infinity); console.assert ( res === ‘ ’ )
• D. let res = fizzbuzz(3); console.assert ( res === ‘ buzz ’ )

Answer: BCD

NEW QUESTION 16
In the browser, the window object is often used to assign variables that require the broadest scope in an application Node.js application does not have access to the window object by default.
Which two methods are used to address this ? Choose 2 answers

• A. Use the document object instead of the window object.
• B. Assign variables to the global object.
• C. Create a new window object in the root file.
• D. Assign variablesto module.exports and require them as needed.

Answer: B

NEW QUESTION 17
Which javascript methods can be used to serialize an object into a string and deserialize a JSON string into an object, respectively?

• A. JSON.stringify and JSON.parse
• B. JSON.serialize and JSON.deserialize
• C. JSON.encode and JSON.decode
• D. JSON.parse and JSON.deserialize

Answer: A

NEW QUESTION 18
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