Computer Networking Fundamentals – Level Two Course Outline

1. Advanced Network Models & Protocols

• Deep dive into OSI and TCP/IP layers
• Understanding encapsulation and decapsulation in depth
• Advanced TCP/UDP concepts: ports, sessions, and connection states
• Common networking protocols in detail (HTTP/S, FTP, DNS, DHCP, SMTP, SNMP, ICMP, ARP)

2. IP Addressing & Subnetting Advanced

• Advanced IPv4 subnetting and VLSM (Variable Length Subnet Masking)
• IPv6 addressing, subnets, and types (link-local, global, multicast)
• NAT (Static, Dynamic, PAT) and its applications
• DHCP configuration and troubleshooting

3. Routing & Switching Fundamentals

• Difference between routers and switches in-depth
• Layer 2 vs Layer 3 switching
• Static vs dynamic routing overview
• Basic routing protocols: RIP, OSPF, EIGRP (conceptual)
• VLANs (Virtual LANs) and inter-VLAN routing

4. Wireless Networking Advanced

• Wi-Fi standards (802.11a/b/g/n/ac/ax) and their differences
• Wireless security: WPA2, WPA3, enterprise authentication
• Wireless troubleshooting and site surveys
• Introduction to Wi-Fi channels, interference, and range optimization

5. Network Services & DNS Advanced

• Domain Name System: hierarchy, zones, and record types
• DHCP scope configuration and IP leasing
• Understanding NAT and PAT for network communication
• Introduction to proxy servers and caching

6. Network Troubleshooting & Tools

• Using advanced commands and utilities: traceroute, netstat, tcpdump, ping, nslookup, dig
• Network monitoring basics: SNMP, Wireshark packet analysis
• Identifying bottlenecks, latency, and packet loss
• Troubleshooting LAN, WAN, and wireless connectivity issues

7. Network Security Fundamentals

• Firewalls, VPNs, and access control concepts
• Basic intrusion detection and prevention (IDS/IPS)
• Secure network design principles
• Introduction to encryption, SSL/TLS, and secure communication

8. Network Virtualization & Cloud Basics

• Virtual LANs (VLANs) and virtual networks
• Introduction to virtual switches and routers
• Cloud networking concepts (VPCs, subnets, VPN connections)
• Remote access and cloud-based network services

9. Performance & Quality of Service (QoS)

• Network bandwidth, latency, and throughput analysis
• Introduction to QoS and traffic prioritization
• Tools for performance monitoring
• Basic optimization techniques for small networks

10. Practical Labs & Exercises

• Configuring VLANs and inter-VLAN routing
• Setting up and troubleshooting DHCP and NAT
• Wireless network configuration and security
• Packet capture and analysis with Wireshark
• Network troubleshooting scenarios with multiple devices

💡 Pro Tip: Level Two emphasizes routing, switching, wireless, network services, security, and troubleshooting. Hands-on labs using Packet Tracer, GNS3, or real devices are essential to understand concepts deeply.