Module One

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Reimagining the Internet

1. Vint Cerf has described the InterNet as a homogenous network that connects heterogeneous computers. What did he mean by that?

The network connects computers and other devices with different operating systems.

2. What is Metcalfe's law? (Hint: Use Google.)

It states that the value of a telecommunication network is proportional to the square of the number of connected users.

3. Where geographically are the majority of Internet Users located?

Asia.

4. Concerning the percentage of a country population that uses the Internet, with what are mobiles helping?

They allow more users to connect to the internet.

5. In design terms, what differentiates the Internet from earlier networks such as the Telephone and Telegraph networks?

In earlier networks they had to lay down long lines to connect users while now we can use microwave, satellites and many other new technologies to connect.

6. Was there a particular logic in Vint Cerf's choice of a 32 it address space for IP addresses?

No.

7. How do digital signatures relate to closing an important vulnerability in the DNS system?

They can bind the domain name and IP address.

8. What is a sensor network? Give an example.

Its a network that collects and sends information from various devices. An example is standalone devices in homes like refrigerator and thermostats that can connect to the internet.

9. What does Vint serve describe as one of the hardest problems that he can imagine?

Troubleshooting configuration.

10. Why is cloud collaboration important?

Currently, there is not a standard model for clouds to communicate with each other. Thus clouds are interconnected.

11. How does Vint Cerf describe the job that his Internet Design did with mobile? Specifically, what was the problem?

He describes the design as a rotten job for dealing with mobility. He did not realize at the time that nodes would have to change depending on the location of the device.

12. How does Vint Cerf describe the job that his Internet Design did with broadcast? Specifically, what was the problem?

He described it as imperfection for dealing with broadcast media. The problem was that he turned the broadcast media into a point to point link..

Internet Resources

1. What is the Internet Society?

An international, non-profit organization founded in 1992 to provide leadership in Internet related standards, education, and policy.

2. Who is Vint Cerf?

One of the fathers of the internet. He co-designed TCP/IP protocols and the basic architecture of the internet.

3. Who is Bob Kahn?

Also known as one of the fathers of the internet. He invented TCP/IP, with Vint Cerf. He was also responsible for originating DARPA’s Internet program.

4. As articulated by Lynn St. Amour, what is ISOC’s hope for the future?

That everyone in the world will have equal access to a ubiquitous, reliable and open Internet and all countries of the world will be on par with each other.