Port numbers and multiplexing in Computer Networks - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the port number used by HTTP.

Computer Networks

HTTP typically uses port number [1].

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

A80

B25

C443

D21

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing HTTP port with FTP port 21.

Mixing up HTTP with HTTPS port 443.

HTTP uses port 80 by default to communicate over the web.

2fill in blank

medium

Complete the code to explain multiplexing in networking.

Computer Networks

Multiplexing allows multiple [1] to share a single communication channel.

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

Ausers

Bcomputers

Crouters

Ddata streams

Attempts:

3 left

💡 Hint

Common Mistakes

Assuming multiplexing shares devices instead of data.

Confusing multiplexing with routing.

Multiplexing lets several data streams use one channel to improve efficiency.

3fill in blank

hard

Fix the error in the statement about port numbers.

Computer Networks

The port number [1] is reserved for HTTPS traffic.

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

A80

B21

C443

D110

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing HTTPS port with HTTP port 80.

Mixing HTTPS with FTP or POP3 ports.

HTTPS uses port 443 to secure web traffic.

4fill in blank

hard

Fill both blanks to complete the explanation of port multiplexing.

Computer Networks

Port multiplexing allows a single [1] to handle multiple [2] simultaneously.

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

AIP address

Bconnections

Cusers

Dservers

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing servers with IP addresses.

Mixing up users with connections.

An IP address can manage many connections at once using different port numbers.

5fill in blank

hard

Fill all three blanks to complete the dictionary comprehension about port usage.

Computer Networks

ports = [1]: [2] for [3] in ['HTTP', 'HTTPS', 'FTP']}

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

A{service

Bport_numbers[service]

Cservice

Dport_numbers

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the opening brace for the dictionary.

Using incorrect variable names in the comprehension.

This creates a dictionary mapping service names to their port numbers using a comprehension.