10 Wrap Up
It has been said that building the Internet solved the world’s most complex engineering problem to date. The design...
Tag: computer network tutorial
3.6 Questions-Chapter 3
You can take this quiz online at http://www.net-intro.com/quiz/ When using a WiFi network to talk to the Internet,...
3.5 Glossary-Chapter 3
base station: Another word for the first router that handles your packets as they are forwarded to the...
3.4 Summary-Chapter 3
So now we have looked at the “lowest” layer in our four-layer architecture. And we have only taken a simple look...
3.3 Coordination in Other Link Layers
Sometimes when a link layer has many transmitting stations and needs to operate at near 100% efficiency for long...
3.2 Courtesy and Coordination
Because many computers are sharing the same radio frequencies, it’s important to coordinate how they send data. When...
3.1 Sharing the Air
When your laptop or phone is using WiFi to connect to the Internet, it is sending and receiving data with a small,...
3 Link Layer
The lowest layer of our Internet Architecture is the Link layer. We call it the “lowest layer” because it is...
1.8 Questions-chapter 1
You can take this quiz online at http://www.net-intro.com/quiz/ What did early telephone operators do? a)...
1.7 Glossary-Chapter 1
address: A number that is assigned to a computer so that messages can be routed to the computer.hop: A single physical...
1.6 Putting It All Together
So when we combine all this together we can understand the basic operation of today’s Internet. We have specialized...
1.5 Addressing and Packets
In the early store-and-forward networks it was important to know the source and destination computers for every...
1.4 Packets and Routers
The most important innovation that allowed messages to move more quickly across a multi-hop network was to break each...
1.3 Early Wide Area Store-and-Forward Networks
In the 1970s and 1980s, people working at universities around the world wanted to send each other data and messages...
1.2 Computers Communicate Differently
When humans talk on the phone, they make a call, talk for a while, and then hang up. Statistically, most of the time,...
