| Acronym | Definition |
|---|---|
| OSI Model | Open Systems Interconnection Model |
| TCP | Transmission Control Protocol |
| UDP | Uniform Datagram Protocol |
| STP | Shielded Twisted Pair |
| UTP | Unshielded Twisted Pair |
| MAC (Address) | Media Access Control |
| EMI | Electromagnetic Interference |
| RJ (RJ-45) | Registered Jack |
| CSMA/CD | Carrier Sense Multiple Access/Collision Detect |
| CSMA/CA | Carrier Sense Multiple Access/Collision Avoidance |
| STP | Spanning Tree Protocol |
| VLAN | Virtual Local Area Network |
| ACL | Access Control List |
| NAT | Network Address Translation |
| NIC | Network Interface Card |
| ICMP | Internet Control Message Protocol |
| TTL | Time To Live |
| LAN | Local Area Network |
| WAN | Wide Area Network |
| MAN | Metropolitan Area Network |
| WLAN | Wireless Local Area Network |
| ARP | Address Resolution Protocol |
| CIDR | Classless Interdomain Routing |
| DHCP | Dynamic Host Configuration Protocol |
| APIPA | Automatic Private Internet Protocol Addressing |
| PAT | Port Address Translation (Aka NAT Overload) |
| RIP | Routing Information Protocol |
| VLSM | Variable-Length Subnet Masking |
| OSPF | Open Shortest Path First |
| EGP | Exterior Gateway Protocol |
| BGP | Border Gateway Protocol |
| EIGRP | Enhanced Interior Gateway Routing Protocol |
| OTDR | Optical Time Domain Reflector |
| IS-IS | Intermediate System - Intermediate System |
| VPN | Virtual Private Network |
| WAP | Wireless Application Protocol |
| VOIP | Voice over IP |
| DMZ | Demilitarized Zone |
| IPSEC | Internet Protocol Security |
| IPS | Intrusion Prevention System |