Internet skills in 30 min
- IP address is an address of the computer in the internet. MAC address is an "ID number" of the "network interface card (NIC)" of the computer.
- Your computer's MAC address does not change forever (unless you replace its NIC).
- Your computer's IP address can change if you change it's connection to the internet.
- It is like your name never changes but your residence address changes when you move from one city to another city.
- Find IP address and MAC address of the computer in front of you.
- Find IP address and MAC address of your smartphone.
- "Global IP address" can be accessed from all over the world DIRECTLY!
- "Private IP address" can be accessed from inside a small network.
- Is the IP address of the computer in front of you global or private?
- Is the IP address of your smartphone global or private?
- What are the advantages and disadvantages of global and private IP address?
"Client" is a computer in front of you now. "Server" is a computer working for you through a network. Mostly it is at somewhere else.
- You are watching this website on your client. But it's contents are provided by a server, which is our lab's computer named "pen" (or more officially, "pen.envr.tsukuba.ac.jp"). It is placed in a building near the university library.