1. CS 4700 / CS 5700 Network Fundamentals
Christo Wilson
8/22/2012
CS 4700 / CS 5700 Network Fundamentals
Lecture 4ish: Review from last week
Revised 1/25/15
Defense

2. Intro to the class Use Piazza for everything Don’t cheat
Really
Unless it’s something truly personal/private
Don’t cheat
I will catch you
If you have questions about what is cheating, ask
Be careful not to copy summary points
Regrading policy
2 strikes and you’re out
Partners allowed on all projects

3. History of the Internet
What were the new ideas that revolutionized/distinguished the Internet from other prior networks?
Packet switching (why is this a good thing?)
No global control
Layering to glue together different network types
What was the original Internet called? What was its design goal?
ARPANET, resilient to catastrophic failure (nuclear)
What do you think is the biggest threat to Internet success?

4. Christo Wilson
8/22/2012
Architecture
What are the 7 ISO layers? Which ones are used in practice?
What does each layer specify?
ISO: Application, Presentation, Session, Transport, Network, Data link, Physical
In practice: Application, Transport, Network, Link
Each layer: Service, API, Protocol
How do we combine layers in data transmission?
What are examples of violations of strict layering?
Combining: Encapsulation
Defense

5. Project 1 highlights Key skills
Work with TCP sockets (optionally SSL)
Follow application-layer protocol
Parse data
Use turnin script from (most) any CCS department server
It’s a valid CCS server if you can read /course/cs5700f16/bin
You can work in teams
Use any language you want (doesn’t have to be C)
Document your code, read instructions carefully!
Get started early. I go to bed early.