COMPUTER NETWORKS

Computer Networks – Complete Learning Guide

Computer Networks form the backbone of modern IT infrastructure, enabling devices, applications, and services to communicate securely and efficiently across local and global environments.

This topic is fundamental for careers in Networking, Cybersecurity, Cloud Computing, DevOps, and IT Support, providing both conceptual understanding and practical relevance.

📘 What You’ll Learn

🔹 Networking Fundamentals

Types of networks: LAN, WAN, MAN, PAN

Network topologies & architectures

OSI & TCP/IP models

🔹 Data Communication

Transmission media (copper, fiber, wireless)

Bandwidth, latency, throughput & jitter

Error detection and correction basics

🔹 Networking Devices

Hubs, switches, routers, firewalls

Load balancers & proxies

Network Interface Cards (NICs)

🔹 IP Networking

IPv4 & IPv6 addressing

Subnetting & CIDR

ARP, ICMP & routing concepts

🔹 Protocols & Services

TCP vs UDP

HTTP/HTTPS, FTP, SMTP, DNS, DHCP

SNMP & NTP basics

🔹 Switching & Routing

VLANs & trunking

Inter-VLAN routing

Static vs dynamic routing (RIP, OSPF, BGP – high level)

🔹 Network Security Basics

Firewalls, ACLs & NAT

VPN fundamentals

Network segmentation & monitoring

🔹 Troubleshooting & Monitoring

Common network issues & root cause analysis

Network tools (ping, traceroute, netstat, tcpdump, Wireshark)

🎯 Who It’s For

Beginners in IT & networking

CCNA & networking certification candidates

Cybersecurity & SOC trainees

Cloud & DevOps engineers

IT support & system administrators

💡 Key takeaway:

Strong networking knowledge is essential for secure systems, scalable architectures, and reliable digital services.

🔖 Hashtags

#ComputerNetworks

#Networking

#CCNA

#Cisco

#ITInfrastructure

#NetworkSecurity

#CloudComputing

#DevOps

#CyberSecurity

#TCPIP

#OSIModel

#TechSkills

#ITCareers