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Network+ > Copper Considerations > Flashcards

Copper Considerations Flashcards

1
Q

Twisted Pair Cable

A
  • Copper cable used extensively for telephone and data networks
  • One pair of insulated wires twisted together forms a balanced pair
  • Pair carries same signal, but with different polarity
  • This enables receiver to distinguish signal more effectively
  • Completed with insulating jacket
  • Most is UTP (Unshielded Twisted Pair)
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2
Q

Shield Twisted Pair (STP)

A
  • Less susceptible to interference and cross talk
  • Required for some Ethernet standards and in environments with high interference
  • Screened cable: had thin foil shield around all pairs. Designated as (ScTP) or Foiled/Unshielded twisted pair (F/UTP) or foiled Twisted Pair (FTP)
  • Fully shielded has braided outer screen and foil shielded twisted pairs. Referred to as Shielded/foiled twisted pair(S/FTP)
  • Must used screened or shielded connectors
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3
Q

Categories of Cable Standards

A
  • Categories of Twisted Pairs to simplify cable selection
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4
Q

Cat 3

A 
Cable Type: UTP
Network Application: 10BASE-T
Max Distance 100m
Frequency: 16 MHz
Connector: RJ-45
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5
Q

Cat 5

A 
Cable Type: UTP
Network Application: 100BASE-TX
Max Distance 100m
Frequency: 100 MHz
Connector: RJ-45
  • Not longer used or available
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6
Q

Cat 5e (Class D)

A 
Cable Type: UTP or F/UTP
Network Application: 1000BASE-T
Max Distance 100m
Frequency: 100 MHz
Connector: RJ-45
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7
Q

Cat 6 (Class E)

A 
Cable Type: UTP,  F/UTP or U/FTP
Network Application: 1000BASE-T or 10GBASE-T
Max Distance 100m or 55m 
Frequency: 250 MHz
Connector: RJ-45
  • Can support 10Gbps, but over short distances (55m)
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8
Q

Cat 6a (Class Ea)

A 
Cable Type: UTP, F/UTP, U/FTP, or S/FTP
Network Application: 10GBBASE-T
Max Distance 100m
Frequency: 500 MHz
Connector: RJ-45
  • Bulkier than 5e, but with more installation requirements
  • Utilized for Health Care facilities, or horizontal connections to WAPs
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9
Q

Cat 7 (Class F)

A 
Cable Type: S/FTP or F/FTP
Network Application: 10GBBASE-Tv
Max Distance 100m
Frequency: 600 MHz
Connector: GG45-TERA
  • Always Screened/Shielded
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10
Q

Cat 8/8.1 (Class I)

A 
Cable Type: U/FTP or F/FTP
Network Application: 40GBASE-T
Max Distance 30m
Frequency: 2000 MHz
Connector: RJ-45
  • Intended for Datacenter use for short patch cables runs
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11
Q

Cat 8.2 (Class II)

A 
Cable Type: F/FTP or S/FTP
Network Application: 40GBBASE-T
Max Distance 30m
Frequency: 2000 MHz
Connector: GG45-TERA
  • Intended for Datacenter use for short patch cables runs
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12
Q

RJ-45

A

Registered Jack

  • Used with 4-pair (8 wire) cables
  • Also referred to as 8P8C
  • Used for Ethernet Twisted pair cabling
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13
Q

RJ- 11

A
  • Smaller and used with 2 or 3 pair UTP
  • Room for 6 wires but 4 are most commonly used
  • Innermost pair typically carries dial tone and voice circuit
  • Used for telephone systems
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14
Q

Copper Termination Standards

A
  • Each conductor in 4 pin data cable is color coded
  • Each pair is assigned a color (Blue, Orange, Green or Brown)
  • First pair has color striped with white, second is solid color
  • Two main standards: T568A and T568B
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15
Q

T568A

A 
Pin 1: Green/White
Pin 2: Green 
Pin 3: Orange White
Pin 4: Blue
Pin 5: Blue/White
Pin 6: Orange
Pin 7: Brown/White
Pin 8: Brown
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16
Q

T568B

A 
Pin 1: Orange/White
Pin 2: Orange 
Pin 3: Green/White
Pin 4: Blue
Pin 5: Blue/White
Pin 6: Green
Pin 7: Brown/White
Pin 8: Brown
17
Q

Plenum Cabling

A
  • Plenum Space is space in a building designed to carry HVAC systems.
  • Fire retardant cabling using Treated PVC or Fluorinated Ethylene Polymer (FEP
  • Less flexible, but no effect on bandwidth
  • Cabling that moves between floors must be firestopped
18
Q

Coaxial

A
  • Made from two conductors that share same axis
  • Core conductor is made of copper wire (Solid or stranded)
  • Enclosed by dielectric(plastic) insulation and a wire mesh
  • Typically used as drop cable for Cable Access TV (CATV) and broadband cable modems
  • Usually terminates in F-type connectors which screw in place
19
Q

Twinaxial

A
  • Similar to Coax,but contains two inner conductors
  • Used for datacenter 10GbE (unofficially referred to as 10GBASE-CR and 10GBASE-CR4
  • Interconnected 5 meters for passive and 10 meters for active cable types
  • Terminates using SFP+ Direct Attach Copper or QSFP+ DAC tranceivers

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