Best Preparations of CRT-600 Exam 2021 Salesforce Certified Unlimited 160 Questions
Focus on CRT-600 All-in-One Exam Guide For Quick Preparation.
NEW QUESTION 12
Teams at Universal Containers (UC) work on multiple JavaScript projects at the same time.
UC is thinking about reusability and how each team can benefit from the work of others.
Going open-source or public is not an option at this time.
Which option is available to UC with npm?
- A. Private packages are not supported, but they can use another package manager like yarn.
- B. Private registries are not supported by npm, but packages can be installed via URL.
- C. Private registries are not supported by npm, but packages can be installed via git.
- D. Private packages can be scored, and scopes can be associated to a private registries.
Answer: D
NEW QUESTION 13
A developer is required to write a function that calculates the sum of elements in an array but is getting undefined every time the code is executed. The developer needs to find what is missing in the code below.
Const sumFunction = arr => {
Return arr.reduce((result, current) => {
//
Result += current;
//
), 10);
);
Which option makes the code work as expected?
- A. Replace line 02 with return arr.map(( result, current) => (
- B. Replace line 04 with result = result +current;
- C. Replace line 05 with return result;
- D. Replace line 03 with if(arr.length == 0 ) ( return 0; )
Answer: C
NEW QUESTION 14
developer wants to use a module named universalContainersLib and them call functions from it.
How should a developer import every function from the module and then call the fuctions foo and bar ?
- A. import all from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar(); - B. import * from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar(); - C. import * ad lib from '/path/universalContainersLib.js';
lib.foo();
lib.bar(); - D. import (foo, bar) from '/path/universalContainersLib.js';
foo();
bar();
Answer: C
NEW QUESTION 15
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?
- A. ' New York '
- B. An error
- C. ' new york '
- D. Undefined
Answer: C
NEW QUESTION 16
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
- A. sampleText.includes(' quick ', 4);
- B. sampleText.includes(' Fox ', 3)
- C. sampleText.includes(' quick ') !== -1;
- D. sampleText.includes(' fox ');
- E. sampleText.includes('fox');
Answer: A,C,D
NEW QUESTION 17
Which three options show valid methods for creating a fat arrow function?
Choose 3 answers
- A. ( ) => ( console.log(' executed ') ;)
- B. [ ] => ( console.log(' executed ') ;)
- C. X,y,z => ( console.log(' executed ') ;)
- D. (x,y,z) => ( console.log(' executed ') ;)
- E. x => ( console.log(' executed ') ; )
Answer: D,E
NEW QUESTION 18
A developer is leading the creation of a new browser application that will serve a single page application. The team wants 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. Koa
- B. Vue
- C. Express
- D. Angular
Answer: C,D
NEW QUESTION 19
A developer creates an object where its properties should be immutable and prevent properties from being added or modified.
Which method should be used to execute this business requirement ?
- A. Object.freeze()
- B. Object.const()
- C. Object.eval()
- D. Object.lock()
Answer: A
NEW QUESTION 20
The developer wants to test the array shown:
const arr = Array(5).fill(0)
Which two tests are the most accurate for this array ?
Choose 2 answers:
- A. console.assert (arr.length >0);
- B. arr.forEach(elem => console.assert(elem === 0)) ;
- C. console.assert( arr.length === 5 );
- D. console.assert(arr[0] === 0 && arr[ arr.length] === 0);
Answer: B,C
NEW QUESTION 21
Which statement accurately describes an aspect of promises?
- A. In a.then() function, returning results is not necessary since callbacks will catch the result of a previous promise.
- B. .then() manipulates and returns the original promise.
- C. .then() cannot be added after a catch.
- D. Arguments for the callback function passed to .then() are optional.
Answer: D
NEW QUESTION 22
Refer to the HTML below:
<div id="main">
<ul>
<li>Leo</li>
<li>Tony</li>
<li>Tiger</li>
</ul>
</div>
Which JavaScript statement results in changing " Tony" to "Mr. T."?
- A. document.querySelectorAll('$main $TONY').innerHTML = ' Mr. T. ';
- B. document.querySelector('$main li:nth-child(2)'),innerHTML = ' Mr. T. ';
- C. document.querySelector('$main li:second-child').innerHTML = ' Mr. T. ';
- D. document.querySelector('$main li.Tony').innerHTML = ' Mr. T. ';
Answer: B
NEW QUESTION 23
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?
- A. Start
End
Success - B. End
Start
Success - C. Success
Start
End - D. Start
Success
End
Answer: A
NEW QUESTION 24
Refer to the code snippet below:
Let array = [1, 2, 3, 4, 4, 5, 4, 4];
For (let i =0; i < array.length; i++){
if (array[i] === 4) {
array.splice(i, 1);
}
}
What is the value of the array after the code executes?
- A. [1, 2, 3, 4, 5, 4, 4]
- B. [1, 2, 3, 5]
- C. [1, 2, 3, 4, 4, 5, 4]
- D. [1, 2, 3, 4, 5, 4]
Answer: D
NEW QUESTION 25
A developer creates a generic function to log custom messages in the console. To do this, the function below is implemented.
01 function logStatus(status){
02 console./*Answer goes here*/{'Item status is: %s', status};
03 }
Which three console logging methods allow the use of string substitution in line 02?
- A. Log
- B. Message
- C. Error
- D. Info
- E. Assert
Answer: D,E
NEW QUESTION 26
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
- A. const addBy = (num1) => num1 + num2 ;
- B. const addBy = function(num1){
return num1 + num2;
} - C. const addBY = (num1) => (num2) => num1 + num2;
- D. const addBy = function(num1){
return function(num2){
return num1 + num2;
}
Answer: C,D
NEW QUESTION 27
Refer to the code:
Given the code above, which three properties are set pet1?
Choose 3 answers:
- A. Name
- B. Size
- C. Type
- D. canTalk
- E. Owner
Answer: B,C,D
NEW QUESTION 28
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