JavaScript-Developer-I Premium Exam Questions

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Question 24

Refer to the following code:

What is the value of output on line 11?

Options:

[1, 2]

[‘’foo’’, ‘’bar’’]

[‘’foo’’:1, ‘’bar’’:2’’]

An error will occur due to the incorrect usage of the for…of statement on line 07.

Question 25

Refer to the code below:

Function changeValue(obj) {

Obj.value = obj.value/2;

}

Const objA = (value: 10);

Const objB = objA;

changeValue(objB);

Const result = objA.value;

What is the value of result after the code executes?

Options:

Nan

Undefined

Question 26

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 having

latency 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:

NODE_DEBUG=true node server.js

DEBUG=http, https node server.js

NODE_DEBUG=http,https node server.js

DEBUG=true node server.js

Question 27

A developer needs to debug a Node.js web server because a runtime error keeps occurring at one of the endpoints.

The developer wants to test the endpoint on a local machine and make the request against a local server to look at the behavior. In the source code, the server, js file will start the server. the developer wants to debug the Node.js server only using the terminal.

Which command can the developer use to open the CLI debugger in their current terminal window?