Module 1 of Path: DevOps for Developers
Network Fundamentals
Module Overview
Learn network fundamentals essential for any DevOps specialist. You'll explore socket programming, command-line tools, OSI layer protocols, and more.
66 Lessons
46 Quizzes
18 Playgrounds
29 Code Snippets
275 Illustrations
Contents (Module 1)
Module 2Contents (Module 1)
Module 21. Before We Begin
2. Internet and the OSI Model
3. The Application Layer
What Is the Application Layer?
Network Application Architectures
P2P vs. Client-Server
How Processes Communicate
HTTP: The Basics
HTTP: Request Messages
Exercise: Looking at a Real HTTP Request
HTTP: Response Messages
Exercise: Looking at a Real HTTP Response
Cookies
Exercise: View and Manage Your Cookies
DNS: Introduction
Exercise: Finding Name Servers
DNS: Records and Messages
4. The Transport Layer
What Is the Transport Layer?
Multiplexing and Demultiplexing
Multiplexing & Demultiplexing in UDP
Introduction to Congestion Control
More on Principles of Congestion Control
Principles of Reliable Data Transfer
The User Datagram Protocol
UDP Checksum Calculation & Why UDP?
Exercise: Capturing UDP Packets
The Transmission Control Protocol
Key Features of the Transmission Control Protocol
TCP Segment Header
TCP Header Flags
TCP Headers: Window Size, Checksum & More
TCP Connection Establishment: Three-way Handshake
5. An Introduction to Socket Programming with Python
6. The Network Layer
What Is the Network Layer?
Organization of the Network layer
The Control Plane: Static & Dynamic Routing
The Internet Protocol: Introduction to IPV4
The Internet Protocol: IPV4 Address Allocation
The Internet Protocol: IPV4 Packets
The Internet Protocol: IPV4 Packet Fragmentation & Reassembly
Address Resolution Protocol (ARP)
Dynamic Host Configuration Protocol (DHCP)
IPv4 in Practice: The Life of a Packet
Why IPv6?
IPv6 Features
Middleboxes: Firewalls
Middleboxes: NATs
7. The Link Layer
8. Conclusion
66 Lessons
46 Quizzes
18 Playgrounds
29 Code Snippets
275 Illustrations
