Free MEAN Stack Development Questions and Answers

Question 1

FREE MEAN Stack Development Questions and Answers

Accepted Answer

locally installed module

Answer

A Node.js project's locally installed modules are listed using the $ npm ls command. The installed modules and their dependencies are shown in detail.

Question 2

What unique special key does MongoDB assign to each document in a collection?

Accepted Answer

_id

Answer

The _id field in MongoDB is a unique key that is added automatically to each document in a collection. It acts as the document's main key and gives it a special identification inside the collection.

Question 3

Choose the JavaScript object that is server-side.

Accepted Answer

File

Answer

The File object is server-side, used in environments like Node.js to interact with the local file system. FileUpload is a client-side (browser DOM) object, while Date and Function are core JavaScript objects that exist in any environment rather than being server-specific.

Question 4

What is returned by the subsequent expression? round(-20.51) =

Accepted Answer

-21

Answer

The expression Math.round(-20.51) returns the value -21.
The Math.round() function in JavaScript is used to round a number to the nearest whole number. When applied to -20.51, it rounds the number to the nearest integer value. Since -20.51 is closer to -21 than to -20, the result is -21.

Question 5

Which of the following Angular functions calls the iterator function?

Accepted Answer

angular.forEach

Answer

In AngularJS (not to be confused with Angular), the angular.forEach function is used to iterate over elements in an array or object. It invokes the specified iterator function for each item in the collection.

MEAN - Stack Development Practice Test

MEAN - Stack Development Practice Test

Free MEAN Stack Development Questions and Answers