Question 1

Refer to the code below:Const myFunction = arr => {Return arr.reduce((result, current) =>{Return result = current;}, 10};}What is the output of this function when called with an empty array ?

Options :

A : Returns 0

B : Throws an error

C : Returns 10

D : Returns NaN

Answer: C

Question 2

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

Options :

A : I nstalls with its own package manager to install and manage third-party libraries.

B : Ensures stability with one major release every few years.

C : Performs a static analysis on code before execution to look for runtime errors.

D : Executes server-side JavaScript code to avoid learning a new language.

E : User non blocking functionality for performant request handling .

Answer: A,C

Question 3

Refer to the code below:const event = new CustomEvent(//Missing Code);obj.dispatchEvent(event);A developer needs to dispatch a custom event called update to send information aboutrecordId.Which two options could a developer insert at the placeholder in line 02 to achieve this?Choose 2 answers

Options :

A : 'Update' , (recordId : '123abc'(

B : 'Update' , '123abc'

C : { type : 'update', recordId : '123abc' }

D : 'Update' , {Details : {recordId : '123abc'}}

Answer: A,D

Question 4

Why would a developer specify a package.jason as a developed forge instead of a dependency ?

Options :

A : It is required by the application in production.

B : It is only needed for local development and testing.

C : Other required packages depend on it for development.

D : It should be bundled when the package is published.

Answer: B

Question 5

Given the code below:const copy = JSON.stringify([ new String(' false '), new Bollean( false ), undefined ]);What is the value of copy?

Options :

A : -- [ \''false\'' , { } ]--

B : -- [ false, { } ]--

C : -- [ \''false\'' , false, undefined ]--

D : -- [ \''false\'' ,false, null ]--

Answer: D