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Module 2 (Networks (Reasons (Fast, efficient communication, Share hardware…

- - - - WiFi NIC and 3G/4G modem
    - - WiFi NIC and ethernetport
    - - 10/100/1000Mbps
      - 802.11g/n
        
        g=10; n=50
  - - - Cheaper
      - Free software
      - Allow file transfer
    - - Must have internet + same software
      - Costs to call telephone nr
      - Low quality
      - Video uses data cap up quickly
  - - - Location of objects
  - - - Thin glass/plastic rods
        
        Covered with multiple layers
        
        Cladding reflects light back to core
      - Light pulses
      - More expensive
      - Requires technical expertise
      - Used as backbone
        
        Connects LAN segments
    - - Pair of copper wires twisted
      - Common
      - Cheap
      - Electrical pulses
      - RJ45 connectors on each end
- - - - Smartphone
        
        Run apps
        
        Touch screen
        
        Sensors
      - Phablet
        
        Smartphone with screen bigger than 5"
      - Tablet
        
        Touch Screen
        
        Longer battery
        
        Built in cellular modem
    - - iOS-Apple
      - Android-Google/non-Apple
    - - Simple apps
      - Touch screen
      - Fast OS
    - - OS runs in background
        
        Monitors notification and phone calls in background
      - Different ways of communication
      - Social media
- - - - Public areas
        
        Connect to WiFi through an access point
      - Free 'cap'
      - 10-100m
    - - Larger range
      - Safer
    - - Wireless connection to existing network
      - Multiple connections to one access point
      - Send/receive radio signals
      - 10-100m
    - - 2-3km built up area
      - 3G is 1-4Mbps
      - 4G is 100Mbps
      - GPRS, EDGE
    - - Transceiver(send/receive radio signals)
        
        Devices with network cards can communicate with each other and access point
  - - - Converts digital signals to analog signals that can be sent over the existing networks
    - - Directs traffic on a network
    - - Directs data to the correct place over the internet
- - - - Web1.0
      - Web 2.0
      - Web3.0