https://padlet.com/riccis3572/2px5aryrc6hb en-us 2016-10-31 19:12:57 UTC 2016-11-10 19:57:39 UTC hello@padlet.com riccis3572 https://padlet.com/riccis3572/2px5aryrc6hb/wish/134887596 * the Internet ships binary info
*info is made of bits
*A bit is any pair of opposites
* 1 = on
* 0= off
* 8 bits =1 Byte
* 1000 bytes = 1 kilo byte
* 1000 kilo bytes= 1 mega bytes
* Send bites by electricity , light ,and radio waves
*  Band width= transmission capacity, measured by bitrate
* Bitrate = number of bits per second a system can transmit
* Lantency= time it takes for a bit to travel from sender to receiver. 
*  Ethernet wire is found in homes, see signal lost over a few hundred feet
* Fiber optic cable is a thread of glass that reflects light
* Light bounces in the wire, depending on the bounce multiply bit at  the same time, at the speed of light
* Fiber optic cables allow internet to go across oceans
*  wire less machines use radio waves to send bits
* The machines have to translate the ones and zeros in to radio waves of different frequencies
* Receiving machines reverse the process and turn it back to binary on computers
* Radio does not travel far
*
*

]]> 2016-11-02 18:11:09 UTC https://padlet.com/riccis3572/2px5aryrc6hb/wish/134887596 riccis3572 https://padlet.com/riccis3572/2px5aryrc6hb/wish/134896017 * In 1970 no standard method for networks to communicate
* Vint Cerf and Bob Kahn invented the Internetworking Protocol
* Internet is a network of networks
* The internet is a design pholophies
* Internet Protocol = IP address
*  organize in a hierarchy
*IPv4 is when IP address is broken up 
* IPv6 uses 128 bits
*Domain NAme System + DNS
* DNS looks up names associated with IP address
* DNS Servers are connected in a distributed hierarchy and are dived into zones
* DNS was created to be open to public
DNS Spoofing lets hackers to change names to go to a different IP address

]]> 2016-11-02 18:31:06 UTC https://padlet.com/riccis3572/2px5aryrc6hb/wish/134896017 riccis3572 https://padlet.com/riccis3572/2px5aryrc6hb/wish/136857636 * if the internet was made of Direct Dedicated Connections it would be impossible for things to keep working.
* Data travels in an indirect fashion
*Information does not follow a fixed path
* Info travels through a packet
*  router act like traffic monitors.
*  often the best rout for data to travel is not the most direct
* Fault Tolerant keep  sending packets 
*  TCP- Transmission Control Protocol
* TCP manages the sending and reviving of all data as packets
* TCP+ Router systems is scalable
* More router the more reliability the internet is.


]]> 2016-11-10 19:11:05 UTC https://padlet.com/riccis3572/2px5aryrc6hb/wish/136857636 riccis3572 https://padlet.com/riccis3572/2px5aryrc6hb/wish/136862967 * URL= Uniform Resource Locator
* Computer language is HTTP
* HTTP = Hypertext Transfer Protocol
* Web servers are made up of "GET" request
* HTML= Hyper Text Markup Language
* cookie data is an ID number
* Digital certificates authorities safe passage into websites]]> 2016-11-10 19:22:47 UTC https://padlet.com/riccis3572/2px5aryrc6hb/wish/136862967 riccis3572 https://padlet.com/riccis3572/2px5aryrc6hb/wish/136867240 *Encryption is scrambling or changing a message to hide it 
* Decryption is unscrambling the message to make it readable
*  Key allows  reader to unlock message
* Secure communications are encrypted using 256 bit keys
* using a larger key does not make encrypting hard just exponentially increases the number of guesses.
* Symmetric Encryption is when the same key is used to encrypt and decrypt
* Computers use asymmetric encryption a public key that can be exchanged with anybody and  and a private key
* anyone can encrypt with a public key
* A private key can only be used to decrypted by a computer with access
*

]]> 2016-11-10 19:32:40 UTC https://padlet.com/riccis3572/2px5aryrc6hb/wish/136867240 riccis3572 https://padlet.com/riccis3572/2px5aryrc6hb/wish/136872205 * people committing cyber crimes don't fit a single profile or motivation
* Larger countries have cyber army
* Virus is an executable program that is installed that harms the user and their computer
* virus can spread to other computers
* when a virus is on file it can steal , delete, control programs and remotely control computers
*botnet is a hackers army
*DDOS= distributed denial of service
* Phishing scam is when you get a trust worthy email asking you to login into your accounts
* clicking emails take to fake website

]]> 2016-11-10 19:45:30 UTC https://padlet.com/riccis3572/2px5aryrc6hb/wish/136872205