WebSockets for real-time communication in Computer Networks - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to describe WebSockets.

Computer Networks

WebSockets provide a [1] connection between client and server for real-time data exchange.

Drag options to blanks, or click blank then click option'

Aone-way

Bdelayed

Ctwo-way

Doffline

Attempts:

3 left

💡 Hint

Common Mistakes

Thinking WebSockets only send data from client to server.

Confusing WebSockets with HTTP which is one-way.

WebSockets create a two-way (full-duplex) connection allowing both client and server to send data anytime.

2fill in blank

medium

Complete the sentence about the WebSocket protocol handshake.

Computer Networks

The WebSocket connection starts with an HTTP [1] request to upgrade the protocol.

Drag options to blanks, or click blank then click option'

APOST

BDELETE

CPUT

DGET

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing POST which is used to send data.

Confusing HTTP methods with WebSocket messages.

The WebSocket handshake begins with an HTTP GET request that asks the server to switch to the WebSocket protocol.

3fill in blank

hard

Fix the error in the WebSocket URL format.

Computer Networks

A valid WebSocket URL starts with [1] or wss:// for secure connections.

Drag options to blanks, or click blank then click option'

Aws://

Bftp://

Chttp://

Dsmtp://

Attempts:

3 left

💡 Hint

Common Mistakes

Using http:// which is for regular web pages.

Confusing WebSocket URLs with FTP or email protocols.

WebSocket URLs start with ws:// for normal and wss:// for secure connections, not HTTP or other protocols.

4fill in blank

hard

Fill both blanks to complete the WebSocket message flow description.

Computer Networks

After the connection is open, the client can [1] messages and the server can [2] messages anytime.

Drag options to blanks, or click blank then click option'

Asend

Breceive

Copen

Dclose

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'receive' which is what happens after sending.

Confusing 'open' or 'close' with message actions.

Both client and server can send messages independently once the WebSocket connection is open.

5fill in blank

hard

Fill all three blanks to complete the WebSocket lifecycle steps.

Computer Networks

First, the client sends a [1] request. Then, the server responds with a [2] status. Finally, both sides [3] data over the connection.

Drag options to blanks, or click blank then click option'

Ahandshake

B101 Switching Protocols

Cexchange

D404 Not Found

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 404 which means error, not success.

Mixing up handshake with data exchange steps.

The WebSocket lifecycle starts with a handshake request, followed by a 101 Switching Protocols response, then both sides exchange data.