Infosys Certified NodeJS Expert
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Join Premium10 Infosys Certified NodeJS Expert practice questions with answers
Real Lex exam-pattern multiple-choice questions for the Infosys Certified NodeJS Expert certification. Each question includes the correct answer. The full question bank is available to Premium members.
- Question 1
What is the purpose of the event emitter in Node.js?
- ✓
To allow objects to be notified of changes in the system.
Correct - B
To allow objects to communicate with each other without blocking each other.
- C
To allow objects to emit events that can be listened to by other objects.
- D
To allow objects to be synchronized with each other.
- ✓
- Question 2
What is the event loop in Node.js ?
- ✓
A single thread that handles all the I/O events in the system.
Correct - B
A collection of functions that are executed in order.
- C
A queue of functions that are executed one at a time.
- D
A pool of threads that are used to execute I/O events.
- ✓
- Question 3
An Express developer wants to use “session” middleware to manage the session. What are the following configuration options developer can use along with session middleware? (Select any 3 options)
- ✓
resave
Correct - B
secret
- C
cookie
- D
reset
- ✓
- Question 4
What is the purpose of the npm package manager ?
- ✓
To install and manage Node.js modules.
Correct - B
To provide documentation for Node.js modules.
- C
For testing the Node.js modules.
- D
All of the given options.
- ✓
- Question 5
Which of the following is not a built-in module in Node.js ?
- ✓
fs
Correct - B
path
- C
http
- D
express
- ✓
- Question 6
What are the main benefits of choosing Node.js to implement server-side applications? (Select any 2 options)
- ✓
Node.js is single thread with event-driven mechanism to server a greater number of requests.
Correct - B
Node.js is multi-threaded to support a greater number of requests.
- C
Node.js is suitable to CPU intensive applications.
- D
Node.js is open-source, JavaScript runtime to develop scalable server-side applications.
- ✓
- Question 7
An Express developer wants to setup a custom namespace called ‘/gossip’ on the server side to which the client can connect. Which of the following is the CORRECT option for this requirement?
- ✓
const gos = io.of('/gossip');
Correct - B
const gos = new io('/gossip');
- C
const gos = io.connect('/gossip');
- D
const gos = io.link('/gossip');
- ✓
- Question 8
An Express developer wants to save the uninitialized session inside the store. Which configuration option of the “session” middleware is responsible for this requirement?
- ✓
cookie
Correct - B
saveUninitialized
- C
storeUninitialized
- D
protectUninitialized
- ✓
- Question 9
Which of the following are the best practices that should be followed to ensure user authentication? (Select any 2 options)
- ✓
Web application should allow access through Brute Force technique.
Correct - B
Disable the use of iFrame.
- C
Should have forever lasting sessions.
- D
Enforce HTTPS and use only the latest TLS protocol.
- ✓
- Question 10
Consider a healthcare application where patients can view their medical reports and manage appointments. Doctors can access patient records and admins can access billing information. Which of the following authorization is best suited in this scenario?
- ✓
Role based authorization.
Correct - B
Attribute based authorization.
- C
JSON Web Tokens.
- D
Possession based authentication.
- ✓
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