Wednesday, November 27, 2019

The Internet


1.) A protocol is a set of rules/expectations that allow trouble-less communication as long as everyone follows protocol.
2.) An IP address is a number organized in bits that correlates to a device within a network. These internet protocol addresses allow the destination (usually a website) to be reached. 
3.) An IP address contains 32 bits with 8 bits in each portion of the address. The first few digits of the address identify the regional network the device is in (although nowadays it is now just networks and sub networks). Next comes the subnetwork followed by the address of the device.
4.) There are 32 bits in an IPv4 address meaning that there can be (5.) 4 billion addresses.
6.)IPv6 differs from IPv4 in the amount of bits it uses and the amount of unique addresses it provides. IPv6 has 128 bits and 340 undecillion unique addresses. This increase in possible destinations is needed because the internet became more popular than what was expected when it was designed, and due to the growth we now need more unique addresses to reach more sites. 
7+8.) An IP packet has both the IP address and the data for the machine the address identified.
9.) DNS is used to look up domain names and get the IP address to direct the computer to the right destination. DNS servers are also divided into zones such as .org, .net, .com, etc. to organize and improve the efficiency of domain searching.

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