Comprehensive Computer Systems and Networks

⚡Module1_OSIReferenceModel.ts
STEP 1 / 9
Protocol Simulator
network-stack-monitor.sys
🌐

OSI Reference Model

Trace the journey of data from the application down to the physical wire.

L7
Application
L6
Presentation
L5
Session
L4
Transport
L3
Network
L2
Data Link
L1
Physical

INFO:Welcome to Module 1: The OSI Reference Model. It standardizes network communication into 7 distinct layers.

Comprehensive Computer Systems and Networks

Duration: TBD
Lessons: 6
(0.0)

A complete guide to understanding, designing, and managing modern computer networks and systems architectures. Covers fundamentals to high-availability enterprise environments.

Curriculum

Networking Fundamentals

  • The OSI Reference Model
  • The TCP/IP Suite
  • Network Topologies (Star, Mesh, Ring, Bus)
  • Switching and VLANs (Virtual Local Area Networks)
  • MAC Addressing and ARP

Internet Protocol (IP) and Routing

  • IPv4 vs IPv6 Addressing
  • Subnetting and CIDR (Classless Inter-Domain Routing)
  • Static vs Dynamic Routing
  • Routing Protocols (OSPF, BGP, EIGRP)
  • NAT (Network Address Translation) and PAT

Core Network Services

  • DNS (Domain Name System): Hierarchy, Records, and Resolution
  • DHCP (Dynamic Host Configuration Protocol)
  • NTP (Network Time Protocol)
  • FTP, SFTP, and TFTP
  • HTTP and HTTPS: Web Traffic Basics

Network Security and VPNs

  • Firewalls: Stateful vs Stateless, WAF
  • IDS (Intrusion Detection Systems) and IPS (Intrusion Prevention Systems)
  • VPN (Virtual Private Network) Fundamentals
  • IPsec and OpenVPN Site-to-Site / Client-to-Site
  • SSL/TLS Certificates and Encryption

High Availability: Load Balancing and Clustering

  • Load Balancing Concepts (L4 vs L7)
  • Reverse Proxies (Nginx, HAProxy)
  • High Availability (HA) Architectures
  • System Clustering (Active-Active vs Active-Passive)
  • Failover Mechanisms and Heartbeat Networks

Modern Infrastructure and Cloud Networking

  • SDN (Software-Defined Networking)
  • VPC (Virtual Private Cloud) Design
  • Container Networking (Docker, Kubernetes CNI)
  • Network Monitoring and Telemetry (SNMP, Prometheus, Grafana)
  • Zero Trust Network Architecture (ZTNA)