Card Set Information

2010-08-28 17:27:29
networking network design Huggins

all about cabling
Show Answers:

  1. ______ represents how much info can be sent at 1 time over a specific cable type, or the measure of info capacity of transmission over a cable.
  2. Bandwidth is the difference between the ______ & ______ frequencies of the transmission, measured in hertz.
    Higest & lowest
  3. Bandwidth is a factor used to ________ cable.
  4. BNC~ British Naval Connector
    Is the connector used w/ coaxial cables. (tv cabel connector)
  5. Expansion
    Is the ability to increase the size of a network after the inital install. It is a factor used to evaluate cable. Alway leave room to grow like 20%
  6. Fiber Optic Cable how does it transmit
    Uses light to transmin into across a network.
  7. Fiber Optic Cable is made:
    The core of tje cable is made of glass, which is protected by a layer of gel or plastic. The plastic cover surrounds the entire cable.
  8. Hertz (Hz)
    The unit of frequency measurement, which is = to 1 cycle per sec. Pcs & related devices r often measured in kilohertz (kHz= 1,000 Hz), megahertz (mHz= 1,000 kHz), & gigahertz (GHz= 1,000 MHz)
  9. kHz=
    1,000 Hz
  10. MHz=
    1,000 kHz
  11. GHz=
    1,000 MHz
  12. EMI (Electro-Magnetic Interference) is
    • The interference of electri al signals across a cable by oitside electrical or magnetic
    • Devices. It is a factor that is used to evaluate cable. Copy mach is the biggest factor.
  13. What is the biggies EMI thing
    Copy machines
  14. RJ-11
    A registered jack 11 is used fir telephone connectios used on modern telephone lines
  15. RJ-45
    Registered jack 45 is an 8-wire connector used to connect pc to CAT 5 UTP cables in a network.
  16. Signal Attenuation
    Is a factor used to evaluate cable that relates to how long a signal can travel across a cable before the signal becomes too weak to be recognized in a network.
  17. Thin Coaxial Cable is AKA
    ThinNet. 10Base2
  18. ThinNet consists of:
    A copper wire surrounded by the 1st layer of plastic, then a layer of metal mesh & a final layer of protective plastic. It is used for peer-to-peer networking.
  19. What is ThinNet used for?
    Peer-to-peer networking
  20. Thick Coaxial Cable-AKA
    ThickNet 10Base5
  21. Transmission Media is the?
    Physical pathway used to connect 2 or more pcs together as a network & includes air & space in addition to cable
  22. UTP (Unshielded Twisted-Pair Cable is:
    A network cable that consists of up to 4 pairs of wires. Each pair is twisted around each other at diff rates & the entire cable is encased in a protective plastic covering.
  23. Decision Factors in choosing cable for a network: (5)
    • 1. bandwidth
    • 2. attenuation
    • 3. EMI
    • 4. expansion capability of the cable
    • 5. cost
  24. Thin Coaxial Cable AKA?
    ThinNet 10Base2
  25. ThinNet is made of:
    • 1. a core of copper wire surrounded by a layer of plastic
    • 2. a layer of metal mesh
    • 3. an outer protective plastic insulated sheath
  26. ThinNet is used for?
    cable T.V,
  27. desion factors for ThinNet cable
    • 1. max bandwidth 10 mbps
    • 2. EMI significate problems
    • 3. max distance is 185 meters (200 - 15 due to loss b/c of the connectors)
    • 4. expansion is difficult b/c each pc must be comnnected directly on to the cable in a chain fashion AKA bus topology. The cable is thicker and less flexable, best for peer-to-peer networking in a sm workgroup LAN.
  28. 10Base2 ThinNet is best for what type on network?
    peer-to-peer networking in a small workgroup LAN
  29. UTP (Unshilded Twisted-pair Cable) 8 categories designated by the TIA/EIA 568-A standard.
    • 1. CAT 1- telephone cable
    • 2. CAT 2- was use for Token Ring
    • 3. CAT 3- can be used for Ethernet networks, suffers EMI more than CAT 5; 2 twist per foot
    • 4. CAT 4- can be used for Ethernet networks, suffers EMI more than CAT 5; more twist per foot but less than CAT 5
    • 5. CAT 5- used in LAN. most typical connector RJ-45; has a very high twist per foot
    • 6. CAT 5e-
    • 7. CAT 6-
    • 8. CAT 7-
  30. decision factors UTP: CAT 5
    • 1. max bandwith: 100 mbps
    • 2. EMI: is reduced b/c of the amount of twist
    • 3. signal attenuation: max distance is 100 meters
    • 4. expansion issues: the cable is thin & flexible easy to expand, but equipment is needed to boost the signal, which increases the cost of expansion.
    • 5. cost least expensive
  31. CAT 5 UPT cable has _____ pairs of wires?
    • 4
    • 1. 1 orange pair
    • 2. 1 brown pair
    • 3. 1 blue pair
    • 4. 1 green
    • 1 is solid & the other os white w/ a stripe
  32. data network usually use what wiring standard?
    TIA/EIA 568B
  33. T568A Cabling color standard
    • white/green
    • green
    • white/orange
    • blue
    • white/blue
    • orange
    • white/brown
    • brown
  34. T568B cabling standard
    • white/orange
    • orange
    • white/green
    • blue
    • white/blue
    • green
    • white/brown
    • brown
  35. Fiber-Optic Cable uses?
    light pulses rather than electrical signals to transmit info across the network.
  36. Fiber-Optic may be used over miles b/c there is no ___ and the _____ is very high.
    • EMI
    • Bandwidth
  37. Fiber-Optic is usually used for the _____ of a network.
  38. Since glass & plastic cores can be cracked or broken, install requires care. Special ____ equipment is required to locate a break in the fiber optic cable.
  39. decision factors fiber optic cable
    • 1. Max Bandwidth 10 Gbps through 1.6 Terabits per second
    • 2. EMI none
    • 3. Signal Attenuation: this is laid over several miles
    • 4. Expansion usually used as the backbone or the main cable of LANs, WANs & MANs
    • 5. most expensive
  40. some experts estimate that ___ % of network failures are primarily cause by what?
    • 70%
    • cable-related problems
  41. Backbone Wiring-
    encompasses all wring between telecommunications closets, equip rooms, & enterence facilities, including all cables, mechanical cable terminations, & intermediate & main cross-connects
  42. Backbone wiring runs between telecommunications closets, equip rooms & entrence facilities on the same floor, from floor to floor, & even between buildings. the main cable that everything collapses to
  43. Horizontal wiring- encompasses all cable from the work-area wallplate or network connectiojn to the telcomm closet. the outlets, cable, & crossconnections in the closet are all part of the horizontal wiring, which gets its name b/c the cable typically runs horizontally above ceilings or along the floor.
  44. The work area- includes all cable components between a
    horizontal-wiring wallplate or LAN outlet & the end-user telecoms
    devices, I.E telephone, data terminals, pcs, modems, ect. Work-area
    components can include connectors, cables, adapters, terminators
  45. An equipment room-
    houses building telecommunications systems such as PBXs, servers, and
    the mechanical terminations of the telecomm wiring system. Considered
    different than a wiring closet because of the complexity of the
    components it contains, an equipment room nonetheless may take the
    place of a building's wiring closet or it may be a separate entity.
  46. Unlike the other five components of premise wiring systems, cabling administration

    isn't a place. It's a thing—a process that includes all aspects of
    premise wiring related to documenting and managing the system, testing
    the system, as well as the architectural plans for the system.