| A | B |
|---|
| LAN Technologies | Ethernet, token ring & FDDI. |
| Layered Network | Accelerates evolution, ensures interoperable technology and facilitates modular engineering. |
| CSMA/CD | One node's transmission traverses the entire network and all nodes check the transmission. |
| Router | The device that controls broadcasts. |
| Switch | A layer 2 device that creates collision domains. |
| MAC | The layer 2 address. |
| Presentation Layer | Data encryption and syntax. |
| Application Layer | Provide services to communication applications such as a Web Browser or Email. |
| Datalink Layer | Concerned with topologies such as star and bus. |
| 13.255.255.255 | Class A, layer 3 broadcast address. |
| 13.0.0.0 | Class A, unsubnetted, layer 3 network address. |
| FFFF.FFFF.FFFF | MAC broadcast address |
| FF | 255 in hex. |
| 11111111 | 255 in binary. |
| Network Layer | Concerned with path selection and routing of packets. |
| ARP | Request a MAC address for a known IP address. |
| Data-Segments-Packets-Frames-Bits | Order of encapsulation. |
| Session Layer | X-Window and SQL |
| Physical Layer | Concerned with electrical specifications and media. |
| TCP | Reliable layer 4 protocol. |
