Packet Switching

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Author:
zeravan_27
ID:
260480
Filename:
Packet Switching
Updated:
2014-02-05 20:47:46
Tags:
Packet Switching x25
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  1. Connect multiple local area networks together
    Wide Area Networks
  2. is how data packet is moved over switched wide area networks
    packet switching
  3. Packet switching services include
    X.25 and Frame relay
  4. Was one of the first implementations of packet switching
    X.25 communications protocol
  5. created to break down large messages into smaller pieces
    packet switching
  6. breaks the file into more manageable pieces called packets
    router
  7. Data is gathered by the router as the __________
    message
  8. disassembles the entire lot into jumbled packets
    router
  9. Router is known as
    PAD- Packet assembler disassembler
  10. sends the packets to demarcation point in the office or the company
    CSU/DSU -modemn
  11. picks a wire and transmits to the switching office
    Central Office
  12. area of the telephones company's infrastracture that is between the demarc point
    cloud
  13. X25 characteristics
    • digital
    • synchronous
    • involves 56k or 64k max line
    • known as variable lenght packet switching
    • usually have 128 bytes of actual data, but some configs go up to 512 bytes
  14. is the packets header and trailer information combined
    overhead
  15. includes items such as packet flag,HDLC
    HEADER
  16. includes items such as the cyclic redundancy check (CRC)
    trailer
  17. is the advancement of X25
    frame relay
  18. 56 bits
    x25
  19. 44 bits
    frame relay
  20. is a cabling and interfaced system designed to carry data at high speeds
    T-carrier
  21. is a digital technology developed to combat the limitations of PSTN
    Integrated Services Digital Network
  22. 2 major categories of ISDN
    • BRI-Basic rate ISDN
    • PRI-Primary rete ISDN
  23. a cell based switching technology as opposed to a packet switching technology
    Asynchronuos transfer mode (ATM)
  24. is the standard for data throughput on SONET
    OCx
  25. transfer multiple bit streams over optical fibers
    SONET
  26. is a standard for transmitting data on optical fiber scales
    FDDI- Fiber Distributed data interface
  27. is a family of technologies that provides data transmissions over local telephone networks
    DSL- Digital Subscriber linw
  28. is the standard for the varoius digital subscriber lines
    xDSl
  29. can run on your home telephone line so that you can talk on the phone
    ADSL
  30. installed a a separate line and is more expensive
    SDSL
  31. is used for cable internet and cable Tv
    broadband cable
  32. stands for plain old telephone system
    POTS/PSTN

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