The internet by definition is "The Internet is the world’s largest wide area
network (WAN)." A WAN is a Wide Area Network. This basically means it is a simple way of sending information across the world and communicate. Using the internet you can send messages to people from anywhere else that has internet. Lastly it has a lot of information that you can use for research or curiosity.
What is a protocol?
Protocols control or enable the connection, communication,
and data transfer between two computing endpoints. The first protocol was made in 1969 and it was on the ARPANET. The system was being used for email. Also, in the late 1900's there was 200+ computers connected to it. There was a new set of protocols called TCP/IP that became the
standard that networks used. They used this to exchange data.
What is DNS?
The DNS is the Domain Name Service. There would be no internet communication without DNS. The DNS resolves or translates IP addresses so we can communicate online. Applications send a request which is called a DNS lookup to the computers DNS server. The servers only have limited number of information about it. It is compared to a phone book.
Explain what an ISP is and what it does?
ISP is Internet Service Provider. It connects through routers that connect to LANs and WANs on the Internet. As the data travels through routers it hops. It does this so it can get where it needs to go. Traceroute is a tool you can use to show how data is routed through the internet.
What is a PING and Firewall?
A ping is another computer that is used to determine whether there is a connection to it. It send test packets over the internet you are connected to. Then it tests if the computer they sent it to receives it.Pinging a computer can show you if you are connected to the machine and if it is working. A Firewall is a system designed to prevent unauthorized access to or from a private network. A firewall can be software or hardware based.
Connect To The Internet Summary
The internet is made up of little networks that are all collected together. The smallest networks are the networks that are individual internet users. These are usually set up at homes. The small networks get connected to larger networks. Backbones and routers handle data at very high levels. Backbones are larger and have bundles of fiber-optic cables. Routers are responsible for moving data to other networks or parts of networks.
Internet Service Provider is ISP. It is what helps individuals and companies connect to the Internet. When you sign with an ISP you should be given and email address. They also allow customers to choose what type of service that best goes with what they need. Connections can be made with a copper wire in telephone lines TV. These wires that are fiber-optic lines,
To connect you computer to the internet there are many ways. You can plug you computer into a modem and just turn the modem on and it will work. You can also you wireless internet connect so basically a modem without a plug. DSL connect which are used on phone lines. DSL are always on and will work "24/7".
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