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BICSI RCDD V14 > CHAPTER 4 > Flashcards

CHAPTER 4 Flashcards

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1
Q

BACKBONE DISTRBUTION SYSTEM

A

THE PART OF THE PREMISES DISTRIBUTION SYSTEM THAT PROVIDES CONNECTION BETWEEN TELECOMMUNICATIONS SPACES.

TDMM: PAGE 4-1

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2
Q

CO

A

CENTRAL OFFICE

A COMMON CARRIER SWITCHING CENTER OFFICE (ALSO CALLED PUBLIC EXCHANGE) THAT IS CONVENIENTLY LOCATED IN AREAS TO SERVE SUBSCIBER HOMES AND BUSINESSES. IT PROVIDES TELEPHONY SERVICES (LINES) THAT ARE CONNECTED ON A LOCAL LOOP. THE CO CONTAINES SWITCHING EQUIPMENT THAT CAN SWITCH CALLS LOCALLY OR TO LONG-DISTANCE CARRIER TELEPHONE OFFICES.

TDMM: PAGE G-34

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3
Q

EF

A

ENTRANCE FACILITY

AN ENTRANCE TO A BUILDING FOR BOTH PUBLIC AND PRIVATE NETWORK SERVICE CABLES (INCLUDING WIRELESS), INCLUDING ENTRANCE POINT OF THE BUILDING AND CONTINUING TO THE ENTRANCE ROOM OR SPACE. (TIA)

TDMM: PAGE 4-1, TABLE 4.1

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4
Q

EFM

A

ETHERNET IN FIRST MILE

TERM USED TO DESCRIBE THE ACCESS NETWORK FROM THE ACCESS POINT TO THE SUBSCRIBERS PREMISES. ALSO REFFERED TO AS ETHERNET IN THE LAST MILE.

TDMM: PAGE 4-53

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5
Q

ER

A

EQUIPMENT ROOM

AN ENVIRONMENTALLY CONTROLLED CENTRALIZED SPACE FOR TELECOMMUNICATIONS EQUIPMENT THAT USUALLY HOUSES A MAIN OR IMMEDIATE CROSS-CONNECT. (TIA)

TDMM: PAGE 4-1, TABLE 4.1

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6
Q

HC (FD)

A

HORIZONTAL CROSS CONNECT (FLOOR DISTRIBUTOR)

A GROUP OF CONNECTORS THAT ALLOW EQUIPMENT AND BACKBONE CABLING TO BE CROSS-CONNECTED OR INTERCONNECTED WITH PATCH CORDS OR JUMPERS TO HORIZONTAL CABLING.

TDMM: PAGE 4-2, TABLE 4.1

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7
Q

IC (BD)

A

INTERMEDIATE CROSS-CONNECT (BUILDING DISTIBUTOR)

THE CONNECTION POINT BETWEEN A BACKBONE CABLE THAT EXTENDS FROM THE MC (CD) [FIST LEVEL BACKBONE] TO THE HC (FD) [SECOND LEVEL BACKBONE].

TDMM: PAGE 4-2, TABLE 4.1

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8
Q

MC (CD)

A

MAIN CROSS-CONNECT (CAMPUS DISTRIBTOR)

THE CROSS-CONNECT NORMALLY LOCATED IN THE (MAIN) EQUIPMENT ROOM FOR CROSS-CONNECTION AND INTERCONNECTION OF ENTRANCE CABLES, FIRST LEVEL BACKBONE CABLES, AND EQUIPMENT CABLES.

TDMM: PAGE 4-2, TABLE 4.1

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9
Q

RMC

A

RIGID METAL CONDUIT

A THREADED METAL RACEWAY OF CIRCULAR CROSS-SECTION WITH A COUPLING.

TDMM: PAGE 4-42

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10
Q

TE

A

TELECOMMUNICATIONS ENCLOSURE

A CASE OR HOUSING THAT MAY CONTAIN TELECOMMUNICATIONS EQUIPMENT, CABLE TERMINATIONS, OR HORIZONTAL CROSS-CONNECT CABLING. (TIA)

TDMM: PAGE 4-1, TABLE 4.1

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11
Q

TR

A

TELECOMMUNICATIONS ROOM

AN ENCLOSED ARCHITECTURAL SPACE FOR HOUSING TELECOMMUNICATIONS EQUIPMENT, CABLE TERMINATIONS AND CROSS-CONNECT CABLING. (TIA)

TDMM: PAGE 4-1, 4.1

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12
Q

NAME THE 2 TYPICAL FUNCTIONS A BACKBONE SYSTEM PROVIDES IN CAMPUS.

A
  1. BUILDING CONNECTIONS BETWEEN FLOORS IN MULTI-STORY BUILDINGS
  2. CAMPUS CONNECTIONS IN MULTI-BUILDING ENVIRONMENTS

TDMM: PAGE 4-1

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13
Q

NAME 7 COMPONENTS OF A BACKBONE DISTRIBUTION SYSTEM.

A
  1. CABLE PATHWAYS
  2. ERs THAT MAY CONTAIN HCs (FDs), ICs (BDs), OR MCs (CDs)
  3. TRs THAT TYPICALLY CONTAIN HCs (FDs)
  4. TEs THAT TYPICALLY CONTAIN HCs (FDs)
  5. ENTRANCE FACILITY (EF)
  6. TRANSMISSION MEDIA
  7. MISCELLANEOUS SUPPORT FACILITIES

TDMM: PAGE 4-1

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14
Q

WHICH COMPONENT OF THE BACKBONE DISTRIBUTION SYSTEM PROVIDES ROUTING SPACE FOR CABLES?

A

CABLE PATHWAYS

TDMM: PAGE 4-1, TABLE 4.1

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15
Q

WHICH COMPONENT OF A BACKBONE DISTRIBUTION SYSTEM USUALLY HOUSES THE MAIN CROSS-CONNECT (MC)?

A

EQUIPMENT ROOM

TDMM: PAGE 4-1, TABLE 4.1

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16
Q

WHICH COMPONENT OF A BACKBONE DISTRIBUTION SYSTEM IS DESCRIBED AS AN ENCLOSED ARCHITECTURAL SPACE FOR HOUSING TELECOMMUNICATIONS EQUIPMENT, OR HORIZONTAL CROSS-CONNECT CABLING?

A

TELECOMMUNICATIONS ROOM (TR)

TDMM: PAGE 4-1, TABLE 4.1

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17
Q

WHICH COMPOINENT OF A BACKBONE DISTRIBUTION SYSTEM IS DESCRIBED AS A CASE OR HOUSING THAT MAY CONTAIN TELECOM EQUIPMENT, CABLE TERMINATIONS, OR HORIZONTAL CROSS-CONNECT CABLING?

A

TELECOMMNUICATIONS ENCLOSURE (TE)

TDMM: PAGE 4-1, TABLE 4.1

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18
Q

WHICH COMPONENT OF THE BACKBONE DISTRIBUTION SYSTEM SERVES AS AN ENTRANCE TO THE BUILDING FOR BOTH PUBLIC AND PRIVATE NETWORK SERVICE CABLES?

A

ENTRANCE FACILITY (EF)

TDMM: PAGE 4-1, TABLE 4.1

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19
Q

NAME THE 4 PRIMARY TYPES OF TRANSMISSION MEDIA THAT CAN BE USED FOR THE BACKBONE CABLING.

A
  1. OPTICAL FIBER
  2. BALANCED TWISTED-PAIR
  3. COAXIAL
  4. WIRELESS

TDMM: PAGE 4-2, TABLE 4.1

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20
Q

NAME 5 EXAMPLES OF CONNECTING HARDWARE THAT CAN BE USED AS COMPONENTS OF A BACKBONE SYSTEM.

A
  1. CONNECTING BLOCKS
  2. PATCH PANELS
  3. PATCH CORDS AND JUMPERS
  4. INTERCONNECTIONS
  5. CROSS-CONNECTIONS

TDMM: PAGE 4-2, TABLE 4.1

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21
Q

NAME 4 EXAMPLES OF MISCELLANEUOS SUPPORT MATERIALS THAT ARE NEEDED FOR THE PROPER TERMINATION AND FACILITIES INSTALLATION OF BACKBONE CABLES.

A
  1. CABLE SUPPORT HARDWARE
  2. FIRESTOP
  3. BONDING HARDWARE
  4. PROTECTION AND SECURITY

TDMM: PAGE 4-2, TABLE 4.1

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22
Q

WHAT TERM REFERS TO A GROUP OF CONNECTORS THAT ALLOW EQUIPMENT AND BACKBONE CABLING TO BE CROSS-CONNECTED OR INTERCONNECTED WITH PATCH CORDS OR JUMPERS TO HORIZONTAL CABLING?

A

HORIZONTAL CROSS-CONNECT (HC)/FLOOR DISTRIBUTOR (FD)

TDMM: PAGE 4-2, TABLE 4.1

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23
Q

WHICH COMPONENT SERVES AS THE (OPTIONAL) CONNECTION POINT BETWEEN THE FIRST LEVEL AND THE SECOND LEVEL BACKBONE?

A

INTERMEDIATE CROSS-CONNECT (IC)/BUILDING DISTRIBUTOR (BD)

TDMM: PAGE 4-2, TABLE 4.1

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24
Q

WHICH COMPONENT IS NORMALLY LOCATED IN THE MAIN ER FOR THE CROSS-CONNECTION AND INTERCONNECTION OF ENTRANCE CABLES, FIRST LEVEL BACKBONE CABLES, AND EQUIPMENT CABLES?

A

MAIN CROSS-CONNECT (MC)/CAMPUS DISTRIBUTOR (CD)

TDMM: PAGE 4-2, TABLE 4.1

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25
NAME THE 3 FUNDAMENTAL CABLING TOPOLOGIES.
1. STAR 2. RING 3. BUS TDMM: PAGE 4-3
26
NAME 5 TYPES OF HYBRID CABLING TOPOLOGIES.
1. HIERARCHICAL STAR 2. STAR-WIRED RING 3. CLUSTERED STAR 4. TREE AN BRANCH 5. MESH TDMM: PAGE 4-3
27
WHAT TOPOLOGY IS GENERALLY DEPLOYED FOR OSP CABLING?
STAR TDMM: PAGE 4-4
28
A STAR TOPOLOGY DIRECTLY LINKS ALL BUILDINGS REQUIRING CONNECTION TO THE ______?
MC (CD) TDMM: PAGE 4-4
29
WHAT IS THE IDEAL LOCATION FOR THE MC (CD)?
1. COLOCATED WITH OR CLOSE TO THE PRIMARY ER 2. AT THE CENTER OF THE BUILDINGS BEING SERVED. TDMM: PAGE 4-4
30
NAME 5 ADVANTAGES ASSOCIATED WITH USING A STAR TOPOLOGY FOR CAMPUS BACKBONE CABLING.
1. PROVIDE CENTRALIZED FACILITIES ADMINISTRATION 2. ALLOWS TESTING AND RECONFIGURATION OF THE SYSTEM'S TOPOLOGY AND APPLICATIONS FROM THE MC (CD) 3. ALLOWS EASY MAINTENANCE AND SECURITY AGAINST UNAUTHORIZED ACCESS. 4. PROVIDES INCREASED FLEXIBILITY 5. ALLOWS THE EASY ADDITION OF FUTURE CAMPUS BACKBONES. TDMM: PAGE 4-4
31
NAME 2 DISADVANTAGES ASSOCIATED WITH USING A STAR TOPOLOGY FOR CAMPUS BACKBONE CABLING.
1. INTRODUCES SINGLE POINTS OF FAILURE 2. INCREASES THE COST TDMM: PAGE 4-4
32
WHAT TERM IS USED TO DESCRIBE TREE-LIKE STRUCTURE WHERE A TRUNK AND BRANCH RELATIONSHIP EXISTS WITHIN A CABLING TOPOLOGY?
HIERARCHICAL TDMM: PAGE 4-6
33
TRUE OR FALSE THE LINK FROM THE MC (CD) TO THE IC (BD) MAY BE AN INTERBUILDING OR AN INTRABUILDING LINK.
TRUE. THE LINK FROM THE MC (CD) TO THE IC (BD) MAY BE AN INTERBUILDING OR AN INTRABUILING LINK. TDMM: PAGE 4-6
34
WHAT TYPE OF LINK IS TYPICALLY FOUND BETWEEN THE IC (BD) AND THE HC (FD)?
AN INTRABUILDING LINK TDMM: PAGE 4-6
35
WHAT CONFIGURATION SHOULD THE ICT DESIGNER CONSIDER WHEN THE DISTANCE FROM THE SWITCH TO THE LAST WORKSTATION EXCEEDS THE TRANSMISSION LIMIT?
HIERARCHICAL STAR TDMM: PAGE 4-7
36
WHAT TYPE OF CONFIGURATION SHOULD THE ICT DESIGNER CONSIDER USING WHEN AVAILABLE PATHWAYS DO NOT ALLOW FOR ALL CABLES TO BE ROUTED TO AN MC (CD)?
TWO-LEVEL HIERACHICAL STAR TDMM: PAGE 4-7
37
WHY ARE RING TOPOLOGIES BEIND USED FOR OSP OPERATIONS?
BECAUSE THEY CAN SUPPORT HIGH-BANDWIDTH TRANSPORT APPLICATIONS. TDMM: PAGE 4-8
38
NAME 3 BENEFITS ASSOCIATED WITH USING A RING TOPOLOGY.
1. FAULT-TOLERANT REDUNDANT ROUTING 2. GREATER RELIABILITY AND SIGNIFICANTLY LESS CABLING SERVICE DOWNTIME. 3. FLEXIBLE ARCHITECTURE TDMM: PAGE 4-8
39
WHAT 3 CONDITIONS MUST BE MET BEFORE A PHYSICAL RING TOPOLOGY CAN BE CONSIDERED FOR CONNECTING THE INTRABUILDING ICs (BDs) AND MCs (CDs)?
1. THE EXISTING PATHWAYS MUST SUPPORT IT 2. THE PRIMARY PURPOSE OF THE NETWORK IS OPTICAL FIBER DISTRIBUTED DATA INTERFACE, SONET, TOKEN RING, OR REVERSE PATH ETHERNET. 3. THERE IS A REDUNDANT CABLE PATH. TDMM: PAGE 4-9
40
WHEN WOULD A PHYSICAL STAR/LOGICAL RING BE USED?
1. WHEN OSP DESIGNER DETERMINES THAT A PHYSICAL RING ROUTE IS NOT POSSIBLE 2. WHEN AN EXISTING CABLE WILL BE USED IN A SEGMENT OF THE TOTAL PROJECT. TDMM: PAGE 4-11
41
NAME 3 FACTORS THE ICT DESIGNER WILL USE TO DETERMINE IF A CLUSTERED STAR TOPOLOGY IS AN APPROPRIATE SOLUTION.
1. ELECTRONICS 2. DESIGNERS SURVIVABILITY PLANS 3. TRANSMISSION BUDGET SELECTED AT THE MC (CD) AND EACH NODE SITE TDMM: PAGE 4-12
42
NAME 3 ADVANTAGES ASSOCIATED WITH USING A CLUSTERED STAR TOPOLOGY.
1. ALLOWS FOR FAULT-TOLERANT REDUNDANT ROUTING AT ROUTE LOCATIONS 2. MAY REDUCE DESIGN COSTS FOR THE ELECTRONICS AND CABLES AT THE NODE SITES 3. TAKES ADVANTAGE OF THE CONCENTRATION OF ELECTRONIC EQUIPEMNT IN A COMMON LOCATION FOR NETWORK MANAGEMENT OPERATIONS AND EFFICIENCY. TDMM: PAGE 4-12
43
WHAT TYPE OF TOPOLOGY IS A LINEAR CONFIGURATION?
BUS TOPOLOGY TDMM: PAGE 4-13
44
WHAT WILL HAPPEN IF A BREAK OCCURS ALONG THE ROUTE OF A BUS CONFIGURATION?
ALL NETWORK COMMUNICATIONS WILL BE LOST. TDMM: PAGE 4-13
45
WHAT IS THE COMMON APPLICATION OF THE TREE AND BRANCH TOPOLOGY?
CABLE TV OPERATIONS THAT USE COAXIAL CABLING. TDMM; PAGE 4-14
46
NAME THE 2 TYPES OF MECH NETWORK TOPOLOGIES.
1. FULLY CONNECTED 2. PATIALLY CONNECTED TDMM: PAGE 4-15
47
WHY ARE FULLY CONNECTED MESH TOPOLOGIES NOT ADOPTED FOR MOST NETWORKS?
1. TOO EXPENSIVE 2. TOO COMPLEX TDMM: PAGE 4-15
48
WHERE ARE FULLY CONNECTED MESH TOPOLOGIES COMMONLY USED?
IN PROVIDER AND ENTERPRISE NETWORKS TO CONNECT THEIR ROUTERS TDMM: PAGE 4-15
49
WHAT FORMULA IS USED TO CALCULATE THE NUMBER OF NODES REQUIRED FOR A FULLY CONNECTED MESH TOPOLOGY?
N= X* (X-1)/2 N=NUMBER OF LINKS X= NUMBER OF NODES TDMM: PAGE 4-16
50
WHAT IS THE MINIMUM NUMBER OF SUBSCRIBERS SUPPORTED BY THE OLT?
16 PER PORT TDMM: PAGE 4-18
51
WHERE IS THE ONU ASSUMED TO BE LOCATED?
THE ONU IS ASSUMED TO BE OUTSIDE THE HOME. TDMM: PAGE 4-19
52
NAME 3 LOCATIONS WHERE ETHERNET OVER PTP BALANCED TWISTED-PAIR CABLE MIGHT BE A GOOD FIT.
1. ESTABLISHED NEIGHBORHOODS 2. BUSINESS PARKS 3. MULTI-DWELLING UNIT (MDUs) TDMM: PAGE 4-22
53
WHY ARE LOAD COILS USED?
TO IMPROVE THE (VOICE) TRANSMISSION PERFORMANCE. TDMM: PAGE 4-23
54
WHAT IS A DRAWBACK ASSOCIATED WITH USING LOAD COILS?
THEY INCREASE THE INSERTION LOSS OF THE TRANSMISSION PATH OUTSIDE THE NORMAL PASSBAND RANGE. TDMM: PAGE 4-23
55
HOW MANY LEVELS OF CROSS-CONNECTIONS ARE PERMITTED IN A BACKBONE DISTRIBUTION SYSTEM?
NO MORE THAN 2 TDMM: PAGE 4-27
56
WHEN ARE DIRECT CONNECTIONS BETWEEN TRs PERMITTED?
WHEN THE BACKBONE DISTRIBUTION SYSTEM IS EXPECTED TO MEET THE REQUIREMENTS FOR A BUS OR RING TOPOLOGY CONFIGURATION TDMM: PAGE 4-31
57
WHAT ARE THE 2 PRIMARY DESIGN OPTIONS FOR BUILDING BACKBONE?
1. STAR 2. HIERARCHICAL STAR TDMM: PAGE 4-32
58
WHAT IS OFTEN THE MOST COST EFFECTIVE TRANSMISSION MEDIUM FOR DATA SYSTEMS?
OPTICAL FIBER TDMM: PAGE 4-36
59
WHAT IS OFTEN THE MOST COST-EFFECTIVE TRANSMISSION MEDIUM FOR VOICE SYSTEMS?
BALANCED TWISTED-PAIR TDMM: PAGE 4-36
60
TRUE OR FALSE THE MC (CD) SHALL BE CO-LOCATED IN THE ER WITH A PBX, SECURITY MONITORING EQUIPMENT, AND OTHER ACTIVE EQUIPMENT BEING SERVED.
FALSE. ALTHOUGH IT IS IDEAL TO CO-LOCATE THE MC (CD) IN THE ER WITH A PBX, SECURITY MONITORING EQUIPMENT, AND OTHER ACTIVE EQUIPMENT BEING SERVED, IT IS NOT REQUIRED AND MAY NOT BE POSSIBLE. TDMM: PAGE 4-37
61
TRUE OR FALSE A BUILDING CABLING SYSTEM SHALL HAVE ONLY ONE MC (CD)
TRUE. A BUILDING CABLING SYSTEM SHALL HAVE ONLY ONE MC (CD) TDMM: PAGE 4-37
62
NAME 4 FACTORS TO CONSIDER WHEN SELECTING THE TRANSMISSION MEDIA TO BE USED IN A BACKBONE DISTRIBUTION SYSTEM.
1. FLEXIBILITY OF THE MEDIUM WITH THE RESPECT TO SUPPORTED DEVICES. 2. REQUIRED USEFUL LIFE OF THE BACKBONE CABLING. 3. SITE SIZE AND USER POPULATION 4. USER NEEDS ANALYSIS AND FORECAST TDMM: PAGE 4-38
63
WHAT TYPE OF MULTIMODE FIBER IS RECOMMENDED FOR BACKBONE CABLING SYSTEMS?
OM4 OR HIGHER TDMM: PAGE 4-38
64
NAME THE 2 MOST COMMON CONFIGURATIONS FOR CATEGORY 5e CABLE.
24 AWG OR UP TO 22 AWG ROUND, SOLID CONDUCTORS WITH A NOMINAL CHARACTERISTIC IMPEDANCE OF 100 OHMS. TDMM: PAGE 4-38
65
NAME 3 CATEGORIES OF BALANCED TWISTED-PAIR CABLE THAT ARE SPECIFIED FOR MULTIPAIR BACKBONE CABLING.
1. CATEGORY 3/CLASS C 2. CATEGORY 5e/CLASS D 3. CATEGORY 6/CLASS E TDMM: PAGE 4-39
66
NAME THE 2 MOST COMMON CONFIGURATIONS FOR CATEGORY 5e CABLE
1. 4 PAIR 2. 25 PAIR TDMM: PAGE 4-39
67
WHAT IS THE CABLE LENGTH LIMITATION FOR BACKBONE CABLE IN A VOICE SYSTEM?
800m (2625') TDMM: PAGE 4-39
68
WHAT IS THE LENGTH LIMITATION FOR CABLES BETWEEN NETWORK EQUIPMENT CONNECTIONS?
100m (328') TDMM: PAGE 4-39
69
TRUE OR FALSE OPTICAL FIBER CABLE OFFER IMMUNITY TO EMI AND RFI.
TRUE. OPTICAL FIBER OFFERS IMMUNITY TO EMI AND RFI. TDMM: PAGE 4-39
70
WHOM SHOULD THE ICT DESIGNER CONTACT FOR GUIDANCE IF THE OPTICAL FIBER BACKBONE WILL BE USED FOR A UNIQUE SPECIFICATION?
THE ORIGINAL EQUIPMENT MANUFACTURER (OEM) TDMM: PAGE 4-40
71
WHAT IS THE MOST COMMON TYPE OF INTERNAL/INSIDE BACKBONE PATHWAY?
VERTICALLY ALIGNED TRs WITH CONNECTING SLEEVES OR SLOTS. TDMM: PAGE 4-41
72
WHY IS IT CONSIDERED DESIRABLE TO STACK TRs WITH OTHER MECHANICAL SPACES?
STACKING MAKES THE DISTRIBUTION OF TELECOMMUNICATIONS CABLES MORE EFFICIENT BECAUSE OF SHORTER CONDUITS, BONDING, AND CABLE RUNS. TDMM: PAGE 4-41
73
NAME 3 TYPES OF STEELE CONDUIT THAT ARE COMMONLY USED IN BACKBONE DISTRIBUTION SYSTEMS.
1. RMC 2. IMC 3. EMT TDMM: PAGE 4-42
74
WHAT IS THE BENEFIT OF SPECIFYING THE USE OF RMC WITH PVC COATING (BOTH INSIDE AND OUTSIDE) FOR UNDERGROUND PATHWAYS?
THE PVC COATING PREVENTS LONG-TERM RUST. TDMM: PAGE 4-42
75
NAME 2 WAYS THAT IMC DIFFERS FROM RMC
1. HAS A THINNER WALL THICKNESS THAN RMC 2. WEIGHS ABOUT 1/3 LESS THAN RMC TDMM: PAGE 4-43
76
WHAT IS THE LIGHTEST WEIGHT METALLIC CONDUIT MANUFACTURED FOR USE IN BACKBONE DISTRIBUTION SYSTEMS?
EMT TDMM: PAGE 4-43
77
WHAT IS THE REQUIRED HEIGHT FOR A CURB FOR A SLOT?
A MINIMUM OF 1" TDMM: PAGE 4-43
78
HOW FAR ARE SLEEVES PERMITTED TO EXTEND ABOVE FLOOR LEVEL?
MINIMUM OF 1" MAXIMUM OF 3" TDMM: PAGE 4-43
79
WHY SHOULD YOU LEAVE AT LEAST 1" BETWEEN SLEEVES AND THE WALL OR OTHER SLEEVES?
TO ALLOW ROOM FOR BUSHINGS TDMM: PAGE 4-43
80
NAME 2 POTENTIAL NEGATIVE CONSEQUENCES OF PLACING SLEEVS TOO FAR FROM THE WALL.
1. MAY BECOME A TRIPPING HAZARD 2. MAY CREATE TOO GREAT A CABLE SPAN FROM THE SLEEVE TO THE BACKBOARD. TDMM: PAGE 4-43
81
PER THE TDMM, WHAT IS THE BASELINE REQUIREMENT FOR SLEEVES PER FLOOR?
FOUR 4" SLEEVES AND ONE SPARE 4" SLEEVE FOR EACH 40,000 sqft OF USABLE FLOOR SPACE. TDMM: PAGE 4-44
82
WHAT IS THE MAXIMUM NUMBER OF ROWS OF SLEEVES THAT SHOULD BE USED?
THE NUMBER SHOULD BE RESTRICTED TO 2 WHENEVER PRACTICABLE. TDMM: PAGE 4-45
83
TRUE OR FALSE SLOTS SHOULD BE DESIGNED TO HAVE THE WIDEST DEPTH PERMITTED.
FALSE. PREFERENCE SHOULD BE GIVEN TO NARROWER DEPTHS WHENEVER POSSIBLE. TDMM: PAGE 4-46
84
WHO IS RESPONSIBLE FOR APPROVING THE LOCATION AND CONFIGURATION OF SLOTS?
STRUCTURAL ENGINEER TDMM: PAGE 4-46
85
WHO IS TYPICALLY RESPONSIBLE FOR DIRECTING CABLE SHAFT REQUIREMENTS?
BUILDING MANAGERS TDMM: PAGE 4-46
86
TRUE OR FALSE BACKBONE CABLE PATHWAYS ARE PERMITTED IN ELEVATOR SHAFTS.
FALSE. BACKBONE CABLING CANNOT BE LOCATED IN ELEVATOR SHAFTS. TDMM: PAGE 4-46
87
WHOM SHOULD THE ICT DESIGNER CONSULT FOR INFORMATION ABOUT THE MAXIMUM VERTICAL RISE DISTANCE OF A CABLE?
CABLE MANUFACTURER TDMM: PAGE 4-47
88
WHOM SHOULD THE ICT DESIGNER CONSULT WHEN QUESTIONS ARISE ABOUT FLOOR PENETRATIONS?
THE BUILDINGS LICENSED STRUCTURAL ENGINEER. TDMM: PAGE 4-47
89
NAME 3 POTENTIAL NEGATIVE CONSEQUENCES OF CABLE THAT HAS BEEN INSTALLED WITHOUT THE PROPER SUPPORT.
1. SLIPPAGE BETWEEN THE CABLE CORE AND THE SHEATH 2. STRETCHING OF COPPER CONDUCTORS AND BREAKAGE OF THE OPTICAL FIBER STRANDS 3. BROKEN CABLE, WHICH CAN THEN FALL THROUGH THE PATHWAY AND DAMAGE OTHER CABLES AND EQUIPMENT OR POSSIBLY RESULT IN INJURY TDMM: PAGE 4-47
90
HOW MANY CABLE TIES SHOULD BE USED PER FLOOR TO SECURE BACKBONE CABLE TO A VERTICAL STEEL SUPPORT STRAND?
A MINIMUM OF 3 TDMM: PAGE 4-48
91
WHAT IS THE OPTICAL FIBER STRAND COUNT?
THE NUMBER OF STANDS INSTALLED IN THE CABLE PLANT. TDMM: PAGE 4-49
92
WHAT IS THE MOST COMMON APPLICATION FOR OPTICAL FIBER BACKBONE CABLING?
MULTIPLEXED TRANSMISSION TDMM: PAGE 4-50
93
NAME 4 REASONS TO INCLUDE SPARE OPTICAL FIBERS WHEN INSTALLING OPTICAL FIBER BACKBONE CABLING.
1. MAINTENANCE 2. REDUNDANCY 3. SEGREGATED APPLICATIONS 4. FUTURE APPLICATIONS. TDMM: PAGE 4-50
94
NAME THE 2 MOUNTING METHODS FOR INDOOR BACKBONE CABLING HARDWARE
1. RACK MOUNTED 2. WALL MOUNTED TDMM: PAGE 4-51
95
NAME 4 LOCATIONS WHERE RACK-MOUNTED HARDWARE IS COMMONLY USED.
1. DATA CENTERS 2. EQUIPMENT ROOMS 3. COMPUTER ROOMS 4. TELECOMMUNICATIONS ROOMS TDMM: PAGE 4-51
96
WHEN IS WALL MOUNTED HARDWARE USED FOR A BACKBONE DISTRIBUTION SYSTEM?
WHEN RACK SPACE IS NOT AVAILABLE OR EQUIPMENT MUST BE WALL MOUNTED. TDMM: PAGE 4-51
97
NAME 3 DESIGN FACTORS TO CONSIDER FOR INDOOR HARDWARE.
1. SPLICING HARDWARE 2. TERMINATING HARDWARE 3. PATCH PANELS TDMM: PAGE 4-51
98
WHER IS INDOOR HARDWARE MOST COMMONLY USED IN A BACKBONE DISTRIBUTION SYSTEM?
IN CABLE TERMINATIONS TDMM: PAGE 4-51
99
NAME 3 FACTORS USED TO DETERMINE SPLICING HARDWARE.
1. MOUNTING REQUIREMENTS 2. OPTICAL FIBER COUNT 3. SPLICING METHOD TDMM: PAGE 4-51
100
NAME 4 FACTORS THAT MUST BE KNOWN IN ORDER TO SPECIFY TERMINATING HARDWARE.
1. LOCATION 2. CABLE TYPE 3. TERMINATION METHOD 4. COPPER PAIR COUNT OR FIBER STRAND COUNT TDMM: PAGE 4-51
101
NAME 2 FACTORS USED TO DETERMINE HOW MUCH SPACE IS NEEDED FOR A PATCH PANEL.
1. NUMBER OF LINKS TERMINATED 2. SPACE NEEDED FOR GROWTH TDMM: PAGE 4-52
102
WHAT IS THE BENEFIT OF INTERCONNECTING THE CABLE PLANT TO THE APPLICATIONS EQUIPMENT VIA PATCH CORDS?
THIS METHOD MINIMIZES ACCIDENTAL DAMAGE TO THE BACKBONE CABLE. TDMM: PAGE 4-52
103
WHAT IS THE PURPOSE OF EFM?
TO SPECIFY THE FUNCTIONALITY REQUIRED FOR THE SUBSCRIBER ACCESS NETWORK. TDMM: PAGE 4-53
104
WHY IS THE FIRST MILE SIGNIFICANT?
IT IS THE CRITICAL CONNECTION BETWEEN BUSINESS AND RESIDENTIAL USERS AND THE PUBLIC NETWORK. TDMM: PAGE 4-53
105

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