Basic Networking

Basic Networking Concepts

- OSI and TCP/IP Models

- Layers

- Protocols - Ethernet, TCP/IP stack, application protocols

- Data Encapsulation - Protocol data units, headers and footers.

Layer 1: Physical

Cabling

- UTP Cable - 100m range, TIA/EIA568a and b pinouts, EMI, plenum vs. regular PVC

- Fiber Optic

- Installation and Troubleshooting - crimping, patch panels, cable testing tools

Layer 1 Devices

- Repeaters

- Hubs

Layer 2: Data Link

Ethernet Protocol - MAC addresses, LLC and MAC sublayers, ethernet frame structure

Layer 2 Devices

- Bridge

- Switch

Layer 3: IP

IPv4 - IP address structure, classless vs. classful

IPv6

IPv4 Subnetting

Routing basics

Related services/protocols: DHCP, DNS, ARP, ICMP