Chapter 3 Cabling Topologies Flashcards

1
Q

Name the Three fundamental cabling Typologies

A
  • Star, Hierarchical Star
  • Ring
  • Bus
  • Mesh
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2
Q

Star Topology

A

Allows all buildings to be cabled directly from the Main Cross Connect.

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3
Q

Advantages of Star Topology

A
  • Provides centralized facilities administration
  • Testing and configuration from one location (MC)
  • Easy maintenance and security
  • Flexibility
  • Easy addition to the campus backbone
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4
Q

Disadvantages of Star Topology

A
  • Single point of failure
  • Increased Cost
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5
Q

Ring Topology

A

Allows all buildings to be connected in a ring

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6
Q

Advantages of Ring Topology

A
  • High Bandwidth
  • Fault Tolerant
  • Greater Reliability
  • Flexible designs
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7
Q

BUS Topology

A

Buildings connected one to another in series (Linear), can be part of many configurations

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8
Q

Advantages of BUS Topology

A
  • Great for limited resources, must be pathway secure
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9
Q

Disadvantages of BUS topology

A
  • Easily breaks all communication between buildings if cut
  • No Redundancy
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10
Q

MESH topology

A

Multiple links between multiple nodes

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11
Q

Advantages of MESH topology

A

All nodes communicate instantly to all nodes

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12
Q

Disadvantage of MESH Topology

A

Very Costly

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13
Q

HFC (Hybrid Fiber Coaxial Cabling System)

A

A telecommunications system that uses both fiber and coaxial cables for Voice, Data, and Video

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14
Q

PON (Passive Optical Network)

A

Using direct fiber optic cable directly to the end customer

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15
Q

Advantages to PON

A
  • Fewer Active network devices
  • Reduced equipment space
  • reduces cost of backbone cabling
  • Extended distances
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16
Q

Disadvantages of PON

A
  • Required ROW and real estate for cabinets
  • Higher equipment costs
  • Special testing requirements
  • Learning Curve for technicians
17
Q

Name the 4 primary ITU PON protocols

A
  • BPON (Broadband PON) ITU-T G.983
  • GPON (Gigabit PON) ITU-T G.984
  • EPON (Ethernet PON) IEEE802.3
  • 10GPON (10 Gigabit PON)
18
Q

3 Types of ITU Based PONs

A
  • Central Switch home run
  • Distributed Split
  • Local Convergence
19
Q

PON - Central Swith Home Run

A

Each ONT has a dedicated fiber path to the MC, can carry high information capacity. Expensive. supports PTP and PTMP

20
Q

PON - Distributed Split

A

Multiple tiers of splitters use less fiber. Considered point to multi-point, Can not be easily reconfigured. Not efficient at aggregating subscribers

21
Q

PON - Local Convergence

A

Moves splitters close to the end being served, uses less fiber, less expensive,