application DNS

DNS

client side

• can I cache an address? how do I know if newer update is available?

• do I use the same ip address for both web server and email server?

• what if amazon has many many web server? if I'm in japan, do I go to the same ip address?

server side

• how do I store all these address info?

• how do I keep updated?

wireshark exercise

• analyze DNS wireshark

• analyze nslookup wireshark