Network Security and
Protection

Socket programming basics

 

Learning Outcome

5

Identify real-world applications of socket programming

4

Send and receive data between devices using sockets.

3

Create and connect sockets using Python’s socket module.

2

Differentiate between TCP and UDP sockets.

1

Understand the basics of socket programming

You insert the ATM card into the machine.

The ATM machine connects to the bank server through a network socket.

The user enters the PIN number and withdrawal amount.

The ATM sends this information to the bank server.

The server sends a response back to the ATM.

If approved, the ATM dispenses cash to the user.

After the transaction is completed, the connection is closed.

The bank server verifies:

  1. Correct PIN
  2. Sufficient account balance
  3. Valid transaction

Summary

5

Socket programming is widely used in networking, web apps.

4

Client-server architecture is the basis of socket programming.

3

Data is exchanged using send(), recv(), sendto().

2

Python uses the built-in socket module for socket programming.

1

A socket is an endpoint for communication between systems.

Quiz

Which method is used to receive data in TCP sockets?

 

A. Send()

 

B. Recv()

 

C. Connect()

 

D. Bind()

 

Quiz

Which method is used to receive data in TCP sockets?

 

A. Send()

 

B. Recv()

 

C. Connect()

 

D. Bind()