Based on Matt Langguth's discussion about Networks and the Internet, Please answer the following questions:

1. Explain ARPANET- what it was and what the acronym stands for

ARPANET was a redundant backbone system designed by the military and was the network that eventually helped to create the Internet. It was initially used by the military for communications, but eventually ended up being used for communications between universities and research groups. ARPANET stands for Advanced Research Projects Agency Network.

2. In 1982 TCP/IP as we know it was introduced. What is it?

Transmission Control Protocol/Internet Protocol. It is a protocol for communications between computers that is also the standard for data transmission on the Internet.

3. In 1984 DNS was introduced. Please explain DNS

Domain Name System. The domain name is an easy to use identifier for humans that is translated into the numerical IP address.

4. What is CERT? What does it do?

Computer Emergency Response Team. An organization that monitors the Internet for new viruses and other security threats to computer users.

5. Explain the difference between Microsoft and Apache web server

Apache is totally freeware, while some versions of Microsoft web server must be purchased. Servers that run Apache (such as Penn State) will prevent Front Page from publishing correctly to your web pages. Apache is the most widely used.