Aztu student: Rzayev Khayal Teacher: Valiyeva Irada Group: 102a5 Faculty: Transportation and Logistics



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tarix02.05.2023
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R.Khayal English Presentation

AZTU

  • Student: Rzayev Khayal
  • Teacher: Valiyeva Irada
  • Group: 102a5
  • Faculty: Transportation and Logistics
  • Topic: Connection to the Internet

Wired Internet Connections

  • Dial-up connections
    • Standard phone lines and a modem
    • Computer dials a number for your ISP
    • All Internet programs use the connection
    • Applications might need configured

Wired Internet Connections

  • High-speed broadband connections
    • Any connection faster than dialup
    • Networks share the broadband connection
    • Home use increasing due to
      • Lower cost
      • Increased availability

Wired Internet Connections

  • ISDN
    • Offers speeds up to 1.5 Mbps
    • Uses standard phone lines
    • Requires special equipment
    • Simultaneous use of phone and data

Wired Internet Connections

  • DSL
    • Offers speeds up to 30 Mbps
    • Uses modified phone lines
      • Needs special DSL modem
    • Simultaneous use of phone and data
    • Asynchronous DSL
      • Different up and download speeds
    • Synchronous DSL
    • Variable DSL
      • Speed changes based on traffic

DSL Connections

Wired Internet Connections

  • Cable modems
    • Speeds up to 3 Mbps
    • Uses cable TV wires
    • Requires a cable modem
    • Simultaneous use of TV and data

Software Accessing The Internet

  • Application programming interface (API)

Software Accessing The Internet

  • Network drivers
    • Control access to the hardware
    • Ethernet and dial-up require a driver
    • API connects to the driver

API and Drivers

Wireless Internet Connection

  • Wireless WAN (WWAN)
    • Wireless network over a large area
    • Uses radio signals to transfer data
    • Speeds range from 1 to 100 Mbps
    • Antennas required
    • Subject to atmospheric disturbances

Wireless Internet Connection

  • Satellite services
    • Internet access in remote regions
    • Suitable for home and office use
    • Needs a VSAT at the client
      • Very Small Aperture Terminal
      • Connects to the satellite
    • Modem connects to the VSAT

Wireless Internet Connection

  • Wireless LANs (WLAN)
    • Network without wires
    • Connects to a broadband LAN connection
    • WAP are wired directly into the LAN
    • Nodes use wireless

Wireless LAN

Wireless Internet Connection

  • Wireless security
    • Crucial to protect wireless transmissions
    • Encryption protects transmissions
    • Wireless Encryption Protocol is quite weak
    • Wi-Fi Protected Access is stronger
    • MAC address of trusted computers
    • War driving

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