TCP/Ip

TCP/Ip

1. IP Addresses and DNS

   • IPv4
     • Have run out
     • 4.2 billion devices on the internet
       • Aren't enough IP addresses
   • DNS
     • Domain Name System
       • A system to store domain names and lookup their IP address
     • Is pretty much a large address book
   • IPv6
     • Newer version than IPv4
       • Uses a 128 bit address
     • 2^128

2. Layers

   • Application
   • Transport
   • Network
   • Data Link
   • Physical

3. Protocol

   • A set of agreed rules governing the exchange of transmission of data between devices