BO63 PDC- COMMUNICATION, NETWORKS AND HARDWARE

BO63 PDC- COMMUNICATION, NETWORKS AND HARDWARE

1. NETWORKS

   • WIRED- CONNECTED BY WIRES
   • WIRELESS-NO WIRES
   • NETWORK TOPOLGY
     • BUS NETWORK
     • RING NETWORK
     • STAR NETWORK

2. HARDWARE

   • NODES= ATLEAST TWO DEVICES TO CONNECT TO THE NETWORK
   • CABLES= CONNECT TO THE NODE
     • CONNECT NODES
     • CHEAP, BUT COSTLY IF DISTANCED
     • TRANSFERS A LOT QUICKER THAN WIFI
   • NIC= NETWORK INTERFACE CARD
     • CONVERT DATA IN SIGNALS ACROSS IP
   • SWITCH= MANAGES AND CONTROL WHERE DATA GOES
     • CONTROLS WHERE DATA GOES
   • WAP= WIRLESS ACCESS POINT
     • RADIO FREQUENCES SEND DATA
   • ROUTER
     • LAN= local access point.
     • NEEDS NETWORK TO CONNECT TO INTERNET

3. BARCODES

   • SCANNER AND BARCODES, GIVE OUT DATA FROM DATA BASE
   • UNIQUE NUMBER
   • CHECK DIDGET= LAST TWO NUMBERS OF CODE

4. COMMUNICATION

   • 3G- THIRD GENERATION
     • 5-6 MB PER SECOND
     • CONS
       • SLOW TO TRANFER DATA
       • LARGE FILES ARENT DOWNLOADED
     • PROS
       • CHEAP
       • ACCESIBLE
       • HARDWARE RUNS CHEAP
   • 4G- FOURTH GNERATION
     • 17 MB PER SECOND
     • PROS
       • TRANSFER DATA QUICKER
       • ALOWS MOBILE STREAMING
       • SECURE DUE TO ENCRYTION
     • CONS
       • EXPENSIVE
       • SPEED DEPENDS ON NETWORK PROVIDER
       • NOT NATIONWIDE

Images and files in the map