Q33. developer is trying to convince management that their team will benefit from using Node.js for a backend server that they are going to create. The server will be a web server that handles API requests from a website that the team has already built using HTML, CSS, and JavaScript.
Which three benefits of Node.js can the developer use to persuade their manager?
Choose 3 answers:

Q34. A developer has code that calculates a restaurant bill, but generates incorrect answers
while testing the code:
function calculateBill ( items ) {
let total = 0;
total += findSubTotal(items);
total += addTax(total);
total += addTip(total);
return total;
}
Which option allows the developer to step into each function execution within calculateBill?

Q35. Refer to the code below:
01 const exec = (item, delay) =>{
02 new Promise(resolve => setTimeout( () => resolve(item), delay)),
03 async function runParallel() {
04 Const (result1, result2, result3) = await Promise.all{
05 [exec (‘x’, ‘100’) , exec(‘y’, 500), exec(‘z’, ‘100’)]
06 );
07 return `parallel is done: $(result1) $(result2)$(result3)`;
08 }
}
}
Which two statements correctly execute the runParallel () function?
Choose 2 answers

Q36. Given the code below:
const delay = sync delay => {
Return new Promise((resolve, reject) => {
setTimeout (resolve, delay);});};
const callDelay =async () =>{
const yup =await delay(1000);
console.log(1);
What is logged to the console?

Q37. Refer to the code below:
const addBy = ?
const addByEight =addBy(8);
const sum = addBYEight(50);
Which two functions can replace line 01 and return 58 to sum?
Choose 2 answers

Q38. Refer to the code below:
Let textvalue = ‘1984’;
Which code segment shows a correct way to convert this string to an integer?

Q39. Refer to the code below:
Let foodMenu1 = [‘pizza’, ‘burger’, ‘French fries’];
Let finalMenu = foodMenu1;
finalMenu.push(‘Garlic bread’);
What is the value of foodMenu1 after the code executes?

Q40. Considering type coercion, What does the following expression evaluate to?
True + ) + ‘100 ‘ + null

Q41. A developer is setting up a new Node.js server with a client library that is built using events and callbacks.
The library:
● Will establish a web socket connection and handle receipt of messages to the server
● Will be imported with require, and made available with a variable called we.
The developer also wants to add error logging if a connection fails.
Given this info, which code segment shows the correct way to set up a client with two events that listen at execution time?

Q42. A developer is working on an ecommerce website where the delivery date is dynamically calculated based on the current dat. The code line below is responsible for this calculation.
Const deliveryDate = new Date ( );
Due to changes in the business requirements, the delivery date must now be today’s date + 9 days.
Which code meets this new requirements?

Q43. The developer has a function that prints “Hello” to an input name. To test this, thedeveloper created a function that returns “World”. However the following snippet does not print ” Hello World”.

What can the developer do to change the code to print “Hello World” ?

Q44. Which two console logs out NaN?
Choose 2 answers

Q45. 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?

Q46. 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?

Q47. Refer to the code below:

Line 05 causes an error.
What are the values of greeting and salutation once code completes?

Q48. Refer to code below:
function Person() {
this.firstName = ‘John’;
}
Person.prototype ={
Job: x => ‘Developer’
};
const myFather = new Person();
const result =myFather.firstName + ‘ ‘ + myFather.job();
What is the value of the result after line 10 executes?

Q49. Refer to the following object:
const cat ={
firstName: ‘Fancy’,
lastName: ‘ Whiskers’,
Get fullName() {
return this.firstName + ‘ ‘ + this.lastName;
}
};
How can a developer access the fullName property for cat?

Q50. A developer needs to test this functions:

Which two assert statements are valid tests for this function?

Q51. Refer to the code below:

Which assertion accurately tests the above code?

Q52. Universal Containers (UC) just launched a new landing page, but users complain that the website is slow. A developer found some functions any that might cause this problem. To verify this, the developer decides to execute everything and log the time each of these three suspicious functions consumes.
Which function can the developer use to obtain the time spent by every one of the three functions?