Chapter 2 Cable and Connector Types

Question 1

Current recognized cable include -

Answer 1

• Optical Fiber Cable 50/125, OM3, OM4
• Optical Single Mode OS1, OS2
• 100 OHM balanced twisted pair
• 50 or 75 OHM

Question 2

Optical Fiber Cable Advantages

Answer 2

• Extended Distance
• Extended Bandwidth
• No EMI
• Low Transmission Loss
• Lightweight materials
• Secure

Question 3

Optical Cable Disadvantage

Answer 3

• Different connector issues
• Connector manufacture not compatible
• Fan Out Kits are often required
• Break-out kits are required
• Rework connector due to splicing errors

Question 4

Balanced Twisted Pair Advantages

Answer 4

• Large Installed base
• Proven Technology

Question 5

Balanced Twisted Pair Disadvantage

Answer 5

• High Sensitivity to EMI
• Distance and configuration limitations
• Size and weight of the cable
• Building entrance over voltage over current protection required

Question 6

COAXIAL 75 OHM Cable Advantages

Answer 6

• Less Interference to EMI
• High Bandwidth

Question 7

COAXIAL 75 OHM Cable Disadvantage

Answer 7

• More Expensive
• Shield has increased the risk of ground loops
• Distance limitations
• Coax connectors may pull off

Question 8

50 OHM Coax cable Advantage

Answer 8

Lower Impedance
Higher power over longer distances

Question 9

Optical Fiber in OSP Setting is used for

Answer 9

• Voice
• Video
• Data
• Audio
• CATV
• Fire Detection systems
• Security
• DAS
• BAS

Question 10

Fiber Optic Connectors and Adaptors

Answer 10

LC - Keyed low loss and secure smaller
SC - Keyed moderate loss and secure larger
ST - Keyed moderate loss secure round twist

Question 11

How to calculate passive cable system attenuation (Total Loss)

Answer 11

• Optical Fiber Loss
• Connector Loss
• Splice Loss
• Other Component Loss

Question 12

Optical Fiber Types Buffering

Answer 12

Loose Tube - OSP underground, direct bury, aerial limited on ISP
Tight Buffered - OSP underground, direct bury, aerial many ISP applications

Question 13

Ribbon Fiber Advantages and Disadvantages

Answer 13

Advantage
- Mass Fusion Splicing
- High Fiber Density
- Excellent mechanical protection of fibers

Disadvantage
- High Cost
- Special fusion splicer
- Over 144 counts more shelf space and risk of damage in a rack

Question 14

Common Insulator Types for copper cable

Answer 14

PIC - Solid Plastic Insulation
DEPIC - Dual Expanded Plastic Insulation
PULP - Paper Insulation
Foam - Single layer of expanded plastic insulation
Foam Skin - Dual Plastic Insulation Foam inside and plastic outside
PVC - Solid PVC Insulation

Question 15

Methods for placing cable on pole lines -

Answer 15

• Lash new cable to a new strand
• Over lash new cable to existing strand or cable
• Use a self-supporting cable

Question 16

RUS Rural Utility Services

Answer 16

PE-39 PE89
Define specifications for Aerial OSP Twisted Pair
Aerial Drop Wire
Direct Bury
Twisted pair Testing ANSI TIA 758

Question 17

COAX Cable Types

Answer 17

Bare Aluminum
Jacketed
Self Support
Armored

Question 18

OSP Twisted pair Testing

Answer 18

ANSI/TIA 758

Question 19

Nothing impacts the design and construction of a telecommunications network more than codes, standards, and regulations

Answer 19

True

Question 20

Code Vs Standards

Answer 20

A code is for safety, a Standard is for performance.

Question 21

Shall Vs Should

Answer 21

Shall is a must, required (Code), Should is a may, desirable, would (Standard)

Question 22

A Contract can change a recommendation in a requirement.

Answer 22

True

Question 23

Codes, Standard, best practice

Answer 23

A CODE is a set of rules for safety
A STANDARD is a requirement or recommendation to ensure performance
A BEST PRACTICE is a widely accepted method in the industry

Question 24

Hierarchy of Compliance

Answer 24

AHJ
Codes and Regulations
Standards
Best Practice
Manufacture’s instructions