https://padlet.com/hoganm1519/nuldnykuhdz en-us 2016-11-01 18:04:52 UTC 2025-11-16 16:44:01 UTC hello@padlet.com hoganm1519 https://padlet.com/hoganm1519/nuldnykuhdz/wish/134583279 ~The Internet: A tangible physical system made to move information
~The internet ships binary information, information made of bits
~8 bits=1 byte
~1000 bytes=1 kilo byte
~1000 kilo bytes=1 mega byte
~everything on the internet are represented as bits
~Today, we send bits by electricity, light, and radio waves
~bandwidth: the transmission capacity of a device 
~bandwidth is measured by bitrate(the number of bits per second a system can transmit)
~latency:the amount of time it takes for one bit to travel
~we can send bits as light streams]]> 2016-11-01 18:11:48 UTC https://padlet.com/hoganm1519/nuldnykuhdz/wish/134583279 hoganm1519 https://padlet.com/hoganm1519/nuldnykuhdz/wish/135187060 ~The internet links billions of devices together
~protocol: a well-known set of rules and standards used to communicate between machines
~all the different devices on the internet have unique addresses,  the addresses are just numbers
~every device has an IP
~traditional IP addresses have 32 bits
~The first numbers are the Country/Network, than the seconds numbers are the region/network, than the 3rd numbers are the sub network, than the 4th numbers are the device
~DNS: Domain Name System 
~Dns servers are connected in a distributed hierarchy, and are divided into zones, splitting up responsibility for major domains such as .org, .com, .net, etc.

]]> 2016-11-03 18:01:23 UTC https://padlet.com/hoganm1519/nuldnykuhdz/wish/135187060 hoganm1519 https://padlet.com/hoganm1519/nuldnykuhdz/wish/135195736 ~Information on the internet goes from one computer to another in what we call a packet of information
~When you send a picture that picture can be split up into hundreds of packages just to send one picture
~TCP: transmission control protocol(manages sending and receiving all the data)
~TCP will send back packages if they are not complete

]]> 2016-11-03 18:22:11 UTC https://padlet.com/hoganm1519/nuldnykuhdz/wish/135195736 hoganm1519 https://padlet.com/hoganm1519/nuldnykuhdz/wish/136536864 ~URL: uniform resource locator
~HTTP: hypertext transfer protocol
~When you look for a web browser you computer talks to a server and the server talks back to it in HTTP
~GET requests
~HTML: hyper text markup language
~You use html to tell a web browser how a page looks
~videos and pictures have a separate http address to get those
~post requests
~ cookies: what websites use to remember who you are
~THE INTERNET
   -is completely open
   -the connections are shared
   -information is sent in plain text
~SSL and TLS are like layers of security
~certificate authorities: trusted entities that verify identities of websites and issue certificates for them
~HTTP and DNS manage the sending and receiving of web files
~TCP/IP and ROUTING break down and transport packets
~WIRES, CABLES, & WIFI are binary sequences of 1's and 0's are sent physically ]]> 2016-11-09 19:15:26 UTC https://padlet.com/hoganm1519/nuldnykuhdz/wish/136536864 hoganm1519 https://padlet.com/hoganm1519/nuldnykuhdz/wish/136546079 ~The internet has a lot of private data
~We can keep these private by encryption, which is scrambling or changing a message to hide it
~decryption is unscrambling the message to make it readable
~Key: a secret message for unlocking a message
~today's secure communications are encrypted using 256 bit keys
~symmetric encryption: The same key used to encrypt and decrypt ]]> 2016-11-09 19:34:27 UTC https://padlet.com/hoganm1519/nuldnykuhdz/wish/136546079 hoganm1519 https://padlet.com/hoganm1519/nuldnykuhdz/wish/136550926 ~cyber army
~virus: a executable program that gets installed, usually unintentionally, and harms a user and their computer 
~once a virus is one your computer they can steal or delete any of your files, control programs, or remotely control your computer
~bot net: digital army
~cyber criminals can send you fake spam emails and get your passwords for your banking accounts]]> 2016-11-09 19:45:17 UTC https://padlet.com/hoganm1519/nuldnykuhdz/wish/136550926