Computer Networks and Programming

Study Notes

Network programming is a field of computer programming focused on writing software that communicates over a network.
It enables computers to exchange data and information, allowing them to work together and share resources.

Local Area Networks (LANs) link computers located in close proximity to one another.
Metropolitan Area Networks (MANs) can interconnect devices in an entire city.
Wide Area Networks (WANs) can cover entire countries or the whole world.
The internet is the largest WAN network.

Socket programming involves creating, binding, connecting, sending, and receiving data through network sockets.
Client-server architecture involves designing both the client and server sides of an application.
Protocols require an understanding of various networking protocols like HTTP, FTP, SMTP, etc.
Concurrency and parallelism involve handling multiple connections simultaneously using techniques like threading or asynchronous programming.
Security measures need to be implemented to protect data transmitted over the network, including encryption, authentication, and other techniques.

Python is a versatile language often used for network programming due to its simplicity, readability, and extensive libraries.
Python's standard library includes modules for working with various network protocols, making it well-suited for developing networked applications.

Socket module provides a low-level interface for network communication.
Requests library simplifies making HTTP requests, making it easy to interact with web services and APIs.
Scapy is a powerful packet manipulation tool and library for Python, allowing you to forge, dissect, send, and capture network packets.