Question 1

Refer to the following array:Let arr1 = [ 1, 2, 3, 4, 5 ]; Capture Which two lines of code result in a second array, arr2 being created such that arr2 is nota reference to arr1?

Options :

A : Let arr2 = arr1.slice(0, 5);

B : Let arr2 = Array.from(arr1);

C : Let arr2 = arr1;

D : Let arr2 = arr1.sort();

Answer: A,B

Question 2

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

Options :

A : let x = arr. slice (2);

B : let x = arr. slice (0, 2);

C : let x arr.filter((a) => (return a <= 2 });

D : let x = arr.filter ((a) => 2 }) ;

E : let x =arr.splice(0, 2);

Answer: A,B,C

Question 3

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 4

A developer has a web server running with Node.js. The command to start the web server is node server.js. The web server started havinglatency issues. Instead of a one second turnaround for web requests, the developer now sees a five second turnaround.Which command can the web developer run to see what the module is doing during the latency period?

Options :

A : NODE_DEBUG=true node server.js

B : DEBUG=http, https node server.js

C : NODE_DEBUG=http,https node server.js

D : DEBUG=true node server.js

Answer: D

Question 5

A developer wants to set up a secure web server with Node.js. The developer creates adirectory locally called app-server, and the first file is app-server/index.jsWithout using any third-party libraries, what should the developer add to index.js to create thesecure web server?

Options :

A : const https =require('https');

B : const server =require('secure-server');

C : const tls = require('tls');

D : const http =require('http');

Answer: A