Major Learning
This week involved more in-depth understanding of how the internet works. It’s amazing how much goes on behind the scenes when someone pulls up a single web page. Apparently your computer uses a router and modem to send packets of information to a server which hosts the information via a domain name directory. The domain name is a easier way for us to communicate and remember because it’s actually translated into numbers called an IP (Internet Protocol) address.
My “Aha!” Discovery:
I will borrow from Jeff Tyson to explain how an IP works:
A typical IP address looks like this:
216.27.61.137
To make it easier for us humans to remember, IP addresses are normally expressed in decimal format as a dotted decimal number like the one above. But computers communicate in binary form. Look at the same IP address in binary:
11011000.00011011.00111101.10001001
The four numbers in an IP address are called octets, because they each have eight positions when viewed in binary form. If you add all the positions together, you get 32, which is why IP addresses are considered 32-bit numbers. Since each of the eight positions can have two different states (1 or zero), the total number of possible combinations per octet is 28 or 256. So each octet can contain any value between zero and 255. Combine the four octets and you get 232 or a possible 4,294,967,296 unique values!
From Jeff Tyson, How internet infrastructure works, http://computer.howstuffworks.com/internet/basics/internet-infrastructure5.htm
Major Challenge:
I have little reason for challenges this early in the course. I suspect my biggest challenge in designing a web page will be compartmentalizing the information and translating the look and feel I have to a workable structure. I hope my left and right brains play well. J