1.4 wired & wireless networks

1.4 wired & wireless networks

1. Router is the brain of networking

   • connects to the outside world through a modem
   • Examine IP address

2. Data transmitted over a network is broken down into packets

   • Each packet contains the address of the sender
     • The address of the recipient
     • The sequence number
       • The life span
   • If 2 or more computers place a packet onto a network at the same time, a data collision occurs

3. The internet is a worldwide collection of computer networks

   • They operate on protocols such s TCP/IP
   • WAP allows for wireless devices to connect to a network via bluetooth or WIFI

4. When accessing a webpage we use a URL

   • http tells the computer to use the hypertext transfer which puts packets together to be used

5. LAN (Local Area Network

   • WAN (Wide Area Network)
     • Larger geograpgical scale than LAN
   • Smaller geographical scale than WAN
   • Run by the owner of the local property

6. A switch connects things together

   • It is responsible for distributing data between devices.
   • Built into the router
   • Can use ports simultaneously