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Network Security and
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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:
- Correct PIN
- Sufficient account balance
- 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()
Socket programming basics
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