wired and wireless network v2

wired and wireless network v2

1. arpanetwork

   • first internet created in the 1970's

2. wired network

   • faster than wireless network
   • ethernet cable
   • coaxial cable - the least expessive transmission media that consist of two wires that wrap around each other
   • fibre optic -

3. key word and terms

   • router- device that sends data forward betwween computer networks. they connect two or more devices together. they connect and send data by connecting the two IP addresses together
     • DNS - Domain Nmae Service has a list of all domain names a thier ip address.
       • static IP adressess e.g printer, router, and severs
   • WAP - A device that allows other devices to connect to a network using standers such as WI-FI and bluetooth
   • Switch - allows accessability between networks. it connects two or more device together
   • NIC - built into a device to allow you to access the network. it allows packets to travel through. the MAC address never changes but the IP address does for sercurity reasons
   • transmission control protocol - check if all processes were delivered
   • twisted pair cable - the least expensive transmission media. used as a ethenet

4. hosting lets people see your website, it will be placed on a web server

   • the cloud is a network of servers
     • some servers will run a application
     • some servers will store data
   • VPN - Virtual Private Network
     • intranet
     • extranet
     • VPN provides security, freedom and privicy. it allows people in blocked areas to access the internet.