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Network+ > Fiber Optic Considerations > Flashcards

Fiber Optic Considerations Flashcards

1
Q

SMF

A

Single Mode Fiber

  • Small core 8-10 Microns and long wavelength generated by laser
  • Supports data rates up to 100 Gbps and many KM length
  • Two Grades OS1 for indoor and OS2 for Outdoor
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2
Q

MMF

A

Multimode Fiber

  • Larger core than SMF
  • Less expensive than SMF
  • Does not support as high speeds or distances
  • More suitable for LANs
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3
Q

OM1/OM2

A

Optical Multimode

  • Grades of MMF
  • Rates for applications up to 1 Gbps and use LED transmitters
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4
Q

OM3/OM4

A

Optical Multimode

  • Grade of MMF
  • Users Cavity Surface-Emitting Lasers(VCSEL)
  • Higher Modulation than LED optics
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5
Q

ST

A

Straight Tip

  • Fiber optic connector
  • Early style with push and twist locking mechanism
  • Mostly used for multimode networks, not used much anymore
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6
Q

SC

A

Subscriber Connector

  • Push/Pull design allowing for simple insertion and removal
  • Users for Single or multimode
  • Used commonly for Gigabit Ethernet
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7
Q

LC

A

Local Connector

  • Small form factor connector with tabbed push-pull design
  • Similar to SC but smaller size allows for high port density
  • Widely used for Gigabit Ethernet and 10/40 GbE
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8
Q

MTRJ

A

Mechanical Transfer Registered Jack

- small form factor duplex connector with snap-in design for multimode networks

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9
Q

100BASE-FX

A

Optics: 1300nm
Cable: MMF (OM1), MMF (OM2)
Max Distance: 2 KM
Connector: ST, SC, MT-RJ

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10
Q

100BASE-SX

A

Optics: 850nm
Cable: MMF (OM1), MMF (OM2)
Max Distance: 550 m
Connector: ST, SC, LC

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11
Q

1000BASE-SX

A

Optics: 850nm
Cable: MMF (OM1), MMF (OM2), MMF (OM3)
Max Distance: 275 M
Connector: ST, SC, LC, MT-RJ

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12
Q

1000BASE-LX

A

Optics: 1300nm
Cable: MMF (OM1/2/3) SMF(OS1/2)
Max Distance: 550M
Connector: SC, LC

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13
Q

10GBASE-SR

A

Optics: 850nm
Cable: MMF (OM2/3/4)
Max Distance: 82m, 300m, 400m
Connector: SC, LC

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14
Q

10GBASE-LR

A

Optics: 1310nm
Cable: SMF (OS1/2)
Max Distance: 10 KM
Connector: SC, LC

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15
Q

Principal Applications of 10 GbE

A
  • Increased bandwidth for server interconnections and network backbones, especially for datacenters and SANS
  • Replacing existing switched public data networks based on proprietary technologies with simpler Ethernet switched
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16
Q

Fiber Optic Patch Cords

A
  • Can user same connector on each end, or different
  • Duplex must maintain polarity (Tx must be linked to Rx)
  • Must be odd number of elements to maintain crossover
17
Q

PC

A

Physical Contact

  • Type of Fiber optic finishing
  • Faces of connection and fiber tips are polished so that they curve slightly and fit together, reducing loss
18
Q

UPC

A

UltraPhysical Contact

  • Type of Fiber optic finishing
  • Cable and connector are polished to higher standard than with PC

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