CCNA v2.0, section 1.0, lesson 1, in slides: the OSI and TCP/IP models, encapsulation and decapsulation, MAC addresses, IP addresses and ports, flat layer 2 addresses and the broadcast, ARP, what a host, a switch and a router each do with a frame, TCP and UDP, the three-way handshake, and the traffic and tools of Lab 1: ping, a DNS lookup, an HTTP request, Wireshark, tcpdump and Packet Tracer's simulation mode.
The slides
The lesson is twenty-six slides in five sections, after an introduction. Every slide uses the same network: two PCs and a switch, a router, and a web server and a DNS server behind a second switch.
- Introduction: the network, and the three messages the lesson follows (a ping, a DNS lookup, a web request).
- 1. Layers and encapsulation: the OSI model, the TCP/IP model beside it, encapsulation, and decapsulation with the field that names the next layer up.
- 2. The three addresses: MAC address, IP address and port side by side, the MAC address's two halves and three spellings, layer 2's flat addresses and the broadcast, the IP address and its network part, ARP inside one broadcast domain and why it stops at the router, and the port number.
- 3. Hosts, switches and routers: the host and its default gateway (a route, the default route), two hosts on one switch that need no gateway, the switch's MAC address table, the router's new frame at every hop, and one packet across two links.
- 4. TCP and UDP: the two protocols compared, the three-way handshake, and port numbers.
- 5. The lab's traffic and tools: ping, a DNS lookup, an HTTP request, Wireshark and tcpdump, and Packet Tracer's simulation mode.
The buttons on the left and right edges move between slides. So do the arrow keys and a swipe.
Sources