Network access

Network access

1. Types of connections

   • Switched Telephone Network (RTC)
   • ISDN digital network.
   • ADSL digital network
   • Wired connection
   • satellite connection
   • Wireless networks

2. Network interface cards

   • connect a device to the network
     • cable
   • wireless local area network
     • wireless

3. Physical layer

   • destination node
     • retrieve these individual media signals
   • signals are sent by the media one at a time
   • encode frames and create electrical signals

4. Physical layer media

   • Copper wire
     • electrical pulse patterns
   • Fiber optic cable
     • light patterns
   • Wireless connection
     • transmisiones de microondas

5. Physical layer standards

   • ISO
   • TIA/EIA
   • ITU
   • ANSI
   • IEEE

6. Functions

   • Physical components
     • dispositives
       • hardware
   • Coding
     • Represent the digital information
   • Signaling
     • wireless
     • optical
     • electric

7. Bandwidth

   • kbps
   • Mbps
   • Gbps

8. performance

   • The amount of traffic
   • Traffic type
   • number of network devices

9. Types of physical media

   • copper wiring
     • EMI
     • RFI
     • Crosstalk
   • Communication Bandwidth

10. Copper media

    • UTP
    • STP
    • Coaxial

11. Unshielded twisted pair cable

    • UTP
      • switches
      • routers.

12. Shielded twisted pair cable

    • STP
      • much more expensive

13. Cable coaxial

    • Wireless installations
    • Internet cable facilities

14. Propiedades del cableado UTP

    • Anulación
    • Change the number of turns per pair of threads

15. UTP cabling standards

    • TIA/EIA
    • IEEE
    • Features
      • Cable types
      • Cable lengths
      • Connectors
      • Cable Termination
      • Methods for conducting cable tests

16. UTP connectors

    • standard
      • TIA/EIA-568

17. Types of UTP cables

    • Direct Ethernet Cable
    • Ethernet crossover cable
    • Console cable

18. UTP cable check

    • Wiring map
    • Cable length
    • Signal loss due to attenuation
    • Crosstalk

19. Single mode fiber optic (SMF)

    • immune
      • EMI
      • RFI
    • it's used in
      • Business networks
      • Fibre-to-the-Home (FTTH)
      • Long range networks
      • Submarine cable networks
    • Types of fiber optic media
      • Lasers
      • Diodos emisores de luz (LED)
      • optical fiber can be classified into
        • Single mode fiber optic (SMF)
        • Multimode fiber optic (MMF)
    • Fiber optic connectors
      • ST
      • SC
      • LC
    • Fiber optic cable test
      • Misalignment
      • End spacing
      • Final finish

20. Wireless media properties

    • Coverage area
    • Interference
    • Security
    • Half shared
    • Types of wireless media
      • WLAN
        • Wireless access point
        • Wireless NIC adapters
      • Bluetooth
      • WI MAX

21. The data link layer

    • Allows the upper layers to access the media
    • Accept Layer 3 packages and pack them in frames
    • Prepare network data for the physical network.
    • It controls the way in which data is placed and received in the media.
    • Exchange frames between nodes in a physical network medium, such as UTP or fiber optic.
    • Receive and direct packets to a higher layer protocol.
    • Performs error detection.
    • Data Link Sublayers
      • Logic Link Control (LLC)
      • Media access control (MAC)
      • Provision of media access
        • They accept a plot from a medium.
        • Decapsulate the plot.
        • They encapsulate the package again in a new frame.
        • Forward the new suitable frame to the middle of that segment of the physical network

22. Media access control

    • Topology
    • Media Sharing

23. Physical and logical topologies

    • Physical topology
      • Common WAN physical topologies
        • Point by point
        • Hub-and-spoke
        • Mesh
    • Logical topology

24. Containment Access

    • CSMA/CD

25. The plot

    • Header
    • Data
    • Trailer
    • Plot fields
      • Frame start and stop indicators
      • Addressing
      • Kind
      • Control
      • LAN and WAN frames
        • Ethernet
        • 802.11 wireless
        • Point to Point Protocol (PPP)
        • HDLC
        • Frame Relay