1 | DNS - Domain Name Service - critical component of the Internet; maps names to IP addresses; mail exchanger |
2 | Clients use resolver to access DNS servers |
3 | BIND - Berkeley Internet Name Domain - most common DNS |
4 | DNS servers query each other to resolve names (QueryID) |
5 | To lower traffic requirements, DNS servers will cache answers |
6 | Client |
7 | Local |
8 | DNS |
9 | Company |
10 | DNS |
11 | COM |
12 | DNS |
13 | Root |
14 | DNS |
15 | www.company.com |