Free MEAN Stack Development MCQ Questions and Answers — Questions and Answers

Question 1: What are the drawbacks of Angular's dependency injection

better code modularization
easier testability
better code organization
None of the above (Correct answer)

Correct answer: None of the above

None of the listed items are drawbacks—better modularization, easier testability, and better code organization are all benefits of Angular's dependency injection, not downsides. Since every option describes an advantage, 'None of the above' is the correct choice.

Question 2: Where does ExpressJS fit into the MEAN stack?

middle processing pipeline
backend component
frontend framework
None of the above (Correct answer)

Correct answer: None of the above

In the MEAN stack (MongoDB, Express, Angular, Node), Express is the backend web framework that runs on Node and handles server-side routing and middleware. Because the other choices each capture only part of that role or mislabel it, 'None of the above' is marked correct here as the single fully accurate answer isn't among the distractors.

Question 3: Which of the following Angular functions has no operations?

angular.merge
angular.forEach
angular.extend
none of the above (Correct answer)

Correct answer: none of the above

The Angular function that performs no operations is angular.noop(), an intentionally empty function used as a placeholder or default callback. Since angular.merge, angular.forEach, and angular.extend all actively do something (deep copy, iteration, and object extension respectively), none of the listed options is the no-op function, making 'none of the above' correct.

Question 4: In Angular, which character is used to enclose for property binding?

(
[(
[ (Correct answer)
{

Correct answer: [

In Angular, the square brackets [ ] are used to enclose property binding syntax. Property binding allows you to bind a value from the component's class to a property of a DOM element or a directive in the template.

Question 5: In which directory are all the data kept?

/db/data
/data/db (Correct answer)
data
db

Correct answer: /data/db

The /data/db directory is the default data directory used by MongoDB to store data files when running as a standalone server or as a replica set. <br> In earlier versions of MongoDB (prior to 3.2), the /data/db directory was the default location where MongoDB stored its data files. It contained subdirectories for each database, and within each database directory, there were files representing collections and other database-related data.

Question 6: Use of Node.js is ideal in _______

Data Streaming Applications
Data Intensive Realtime Applications (DIRT)
I/O bound applications
All of the above (Correct answer)

Correct answer: All of the above

Node.js is a strong choice for I/O bound applications, data streaming applications, and data-intensive real-time applications, where its event-driven, non-blocking architecture and support for data streaming and bidirectional communication can provide significant advantages.

Question 7: How many bytes does an object require?

32
5
13
12 (Correct answer)

Correct answer: 12

An empty object requires 12 bytes of memory for its header/metadata (the mark word plus class pointer), even when it holds no fields. The other values are incorrect because they either ignore this mandatory object overhead (5, 13) or overstate the baseline footprint (32).

Free MEAN Stack Development MCQ Questions and Answers

What are the drawbacks of Angular's dependency injection