IT Certification Exam Questions & Answers

QUESTION 123
Refer to the code below:
let o = {
get js() {
let city1 = String(“st. Louis”);
let city2 = String(” New York”);
return {
firstCity: city1.toLowerCase(),
secondCity: city2.toLowerCase(),
}
}
}
What value can a developer expect when referencing o.js.secondCity?

QUESTION 124
A developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of the first three numbers in the array, and the test passes.
A different developer made changes to the behavior of sum3 to instead sum only the first two numbers present in the array.

Which two results occur when running this test on the updated sum3 function?
Choose 2 answers

QUESTION 125
A developer copied a JavaScript object:

How does the developer access dan’s forstName,lastName? Choose 2 answers

QUESTION 126
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

QUESTION 127
A developer writes the code below to calculate the factorial of a given number function sum(number){ return number * sum(number-1);
}
sum(3);
what is the result of executing the code.

QUESTION 128
A developer wants to use a module called DataPrettyPrint. This module exports one default function called printDate ().
How can a developer import and use the printDate() function?
A)

B)

C)

D)

QUESTION 129
A developer tries to retrieve all cookies, then sets a certain key value pair in the cookie. These statements are used:

What is the behavior?

QUESTION 130
Given the following code:
Let x =null;
console.log(typeof x);
What is the output of the line 02?

QUESTION 131
Refer to the code below:
Const searchTest = ‘Yay! Salesforce is amazing!” ;
Let result1 = searchText.search(/sales/i);
Let result 21 = searchText.search(/sales/i);
console.log(result1);
console.log(result2);
After running this code, which result is displayed on the console?

QUESTION 132
Refer to the following object.

How can a developer access the fullName property for dog?

QUESTION 133
Given the following code:

What is the output of line 02?

QUESTION 134
Given the requirement to refactor the code above to JavaScript class format, which class definition is correct?

QUESTION 135
Refer to code below:
Let a =’a’;
Let b;
// b = a;
console.log(b);
What is displayed when the code executes?

QUESTION 136
A developer wants to iterate through an array of objects and count the objects and count the objects whose property value, name, starts with the letter N.
Const arrObj = [{“name” : “Zach”} , {“name” : “Kate”},{“name” : “Alise”},{“name” : “Bob”},{“name” :
“Natham”},{“name” : “nathaniel”}
Refer to the code snippet below:
01 arrObj.reduce(( acc, curr) => {
02 //missing line 02
02 //missing line 03
04 ). 0);
Which missing lines 02 and 03 return the correct count?

QUESTION 137
Given the code below:

What is logged to the console’

QUESTION 138
Refer to the code below:
console.log(”start);
Promise.resolve(‘Success’) .then(function(value){
console.log(‘Success’);
});
console.log(‘End’);
What is the output after the code executes successfully?

QUESTION 139
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 ?

QUESTION 140
Which function should a developer use to repeatedly execute code at a fixed interval ?

QUESTION 141
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?

QUESTION 142
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?