Chapter 20 Flashcards by M J

ADO

Auxiliary Disconnect Outlet
1 . An extension of a
telecommunications circuit
demarcation point from a common
owner’s space into a tenant’s
individual space.
2. A device usually located within
the tenant or living unit used to
terminate the ADO cable or
backbone cable. (T IA)
TDMM: Page G-75

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Access Provider
1 . A company (e.g., telephone company)
that provides a circuit path between a
service provider (SP) and the client
user. An AP also can be the SP.
2. The operator of any facility that is
used to convey telecommunications
signals to and from a client premises.
(T IA) See service provider (SP).
TDMM.* G-4

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CTR

Common Telecommunications Room
The space where backbone and ADO
cables terminate.
TDMM.* Page 20-11

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Distribution Device
A facility used for the termination
and connection of outlet cables, DD
cords, equipment cords, and in
some cases, ADO cables.
TDMM.* 20-6

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Demarcation Point
The point of interface between the
access provider (AP) and the owner
of homes, MDUs, and campuses.
TDMM.* Page 20-4

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Living Area

Any area in which voice/data/video
applications may be used.
TDMM.* Page 20-3, Table 20.1, Notes

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MDU

Multi-DweIIing Unit
A category of dwellings with
multiple living spaces in one
structure or complex. It includes
apartments, townhouses,
condominiums, and assisted living
facilities. These facilities may be
under a single roof or consist of
multiple buildings in a
residential campus.
TDMM.* G-124

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NID

Network Interface Device
The point of connection
between networks.
TDMM.* G-129

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Permanent Link

The permanent part of the cabling
installed (e.g., cable up to
m [295 ft] from the DD to the
outlet and the connectors) without
patch cords installed on
each end of the cable.
TDMM.* Page 20-24

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Who is responsible for
telecommunications cabling
within residential units?

End users (e.g., owners of homes, multi-
dwelling units [MDUs], and campuses)
TDMM.* Page 20-1

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Name 3 factors to consider
when designing a cabling
system for a residential
project.

Anticipated long-term services
Maximum flexibility
Convenience of the tenant
TDMM.* Page 20-1

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What does Grade 1 residential
telecommunications
cabling provide?

A generic cabling system that meets
the minimum requirements for
telecommunications services
TDMM.* Page 20-2

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What types of media are
provided in a Grade 1
residential cabling system?

One 4-pair balanced twisted-pair
cable and associated connectors
that or exceed requirements
for category 5e
One 75-ohm Series-6 coaxial
cable and associated connectors
TDMM.* Page 20-2

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What category of cable does
the TDMM recommend for
installation in a Grade 1
residential cabling system?

Category 6
TDMM.* Page 20-2

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What does Grade 2
residential telecommunication
cabling provide?

A generic cabling system that
meets the requirements for
current and developing basic,
advanced, and multimedia
telecommunications services
TDMM.* Page 20-2

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At a minimum, what types
of media are provided in a
Grade 2 residential
cabling system?

Two 4-pair balanced twisted-pair
cables and associated connectors
that meet or exceed the
requirements for category 5e
cable
Two 75-ohm Series-6 coaxial
cables and associated connectors
TDMM.* Page 20-2

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What category of cable does
the TDMM recommend be
installed for a Grade 2
residential cabling system?

Category 6
TDMM.* Page 20-2

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What topology is used to
install residential cabling?

Star topology
TDMM.* Page 20-2

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What is the maximum length
for each outlet cable?

90m (295 ft)
TDMM.* Page 20-2

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How many
telecommunications outlets
should be installed in each
living area of a residential
facility?

At least one
TDMM.* Page 20-3

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How can a designer reduce the
need for long equipment cords
in living areas?

Install multiple telecommunications
outlet/connectors in each living area
TDMM.* Page 20-3

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Define demarcation point (DP)
as it relates to
residential cabling.

The point of interface between the
access provider (AP) and the owner
of homes, MDUs, and campuses
TDMM.* Page 20-4

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Where is the DP typically
located in a
single-family residence?

On the outside of an exterior
building wall
TDMM.* Page 20-4

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Name the 4 types
recommended backbone cable
for residential cabling
systems.

100-ohm balanced twisted-pair
Multimode optical fiber
Singlemode optical fiber
Trunk, feeder, and distribution
coaxial cable
TDMM.* Page 20-5

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Name 3 topologies that may be used to deploy coaxial backbone cable in a residential cabling system.

1. Star topology 2. Bus topology 3. Star and bus topology TDMM.* Page 20-5

Name 2 topologies that may be used to deploy optical fiber cable in a residential cabling system.

1. Star topology 2. Ring topology TDMM: Page 20-5

Where does the ADO cable reside?

In the distribution device (DD) TDMM.* Page 20-5

How many 4-pair cables must a balanced-twisted pair ADO cable accommodate?

At least 2 per living unit TDMM.* Page 20-5

What determines the proper number of pairs required for an ADO cable?

The tenant's needs TDMM.* Page 20-5

What type of coaxial cable should be used for a coaxial ADO cable?

Series-6 TDMM.* Page 20-5

How many coaxial cables must an ADO cable accommodate?

At least 2 per living unit TDMM.* Page 20-5

Name 2 functions of an ADO.

1. Provides a means for the tenant to disconnect from an AP 2. Provides terminations for connection to the premises cabling TDMM.* Page 20-6

How many balanced twisted- pairs should be included in the design of an ADO?

A minimum of 8 TDMM.* Page 20-6

How many coaxial cables should be included in the design of an ADO?

A minimum of 2 TDMM: Page 20-6

How many optical fiber strands should be included in the design of an ADO?

4 TDMM.* Page 20-6

Is the garage of a single-family home a permissible location for the DD?

Only if the space is conditioned (temperature and humidity controlled) and accessible for maintenance TDMM.* Page 20-6

Define distribution device (DD) as it relates to a residential telecommunications system.

A facility that is used for the termination and connection of outlet cables, distribution device (DD) cords, equipment cords and in some cases, auxiliary disconnect outlet (ADO) cables TDMM.* Page 20-7

What are the distance requirements for providing access to the building electrical ground?

*Within 1.52 m (5 ft) of the DD *In accordance with applicable codes TDMM.* Page 20-6

Name 2 factors used to allocate wall space for a distribution device in a residential system.

1. Grade of service 2. Number of telecommunications outlet/connectors to be installed TDMM.* Page 20-7

How many cable runs should be included in the design of a distribution device?

20 to 50 percent more cable runs than the original installed number of runs TDMM.* Page 20-7

What is the distance requirement between the dedicated duplex electrical outlet and the DD?

The outlet must be installed within 1.52 m (5 ft) of the DD. TDMM.* Page 20-8

What type of electrical outlet must be included in the DD to accommodate fiber-to-the-home?

A dedicated 1 5-A, 120 Vac nominal, nonswitchable duplex electrical outlet TDMM.* Page 20-8

How many outlet cable runs extend from the DD to each telecommunications outlet?

1 or more TDMM: Page 20-8

What category of balanced twisted-pair cable is recommended for telecommunications outlet cable in a residential system?

Category 6A TDMM: Page 20-8

When are weather-resistant telecommunications outlets required?

When they will be installed on building exteriors TDMM.* Page 20-9

How many T568A connectors does a Grade 1 telecommunications outlet contain?

1 TDMM.* Page 20-9, Table 20.3

How many F connectors does a Grade 1 telecommunications outlet contain?

2 TDMM.* Page 20-9, Table 20.3

How many T568A connectors does a Grade 2 telecommunications outlet contain?

2 TDMM.* Page 20-9, Table 20.3

What components may be housed in the CER when it is colocated in the EF?

*Active equipment *Terminations for the DP, ADO cable, and backbone cable TDMM.* Page 20-11

Where do backbone and ADO cables terminate in a multi- dwelling building?

In the common telecommunications room (CTR) TDMM.* Page 20-11

Where should the CTR be located?

On each floor OR Every third floor (thus serving the floor it is on and the floors above and below) TDMM.* Page 20-11

What is the minimum space required for a Grade 2 CTR in an MDU with up to five tenant units?

=775 mm (30.5 in) wide x =610 mm (24 in) high TDMM.* Page 20-11, Table 20.4

What is the minimum space required for a Grade 1 CTR in an MDU with up to five units?

=368 mm (14.5 in) wide x =610 mm (24 in) high TDMM: Page 20-11, Table 20.4

What is the minimum additional space per tenant unit required in a Grade 1 CTR in an MDU with more than five units?

-32,258 mm2 (50 in2) TDMM.* Page 20-11, Table 20.4

What is the minimum additional space per tenant unit required in a Grade 2 CTR in an MDU with more than five units?

64,516mm2 (100 in2) TDMM.* Page 20-11, Table 20.4

Name 4 items that make up rough-in cabling.

1. Distribution device (DD) 2. Auxiliary disconnect outlet (ADO) cabling 3. Telecommunications outlet/connector cabling 4. Mounting hardware (e.g., wall boxes) TDMM.* Page 20-20

What important step must the cabling installer perform before installing the ADO cable?

Pinpoint the intended location of the network interface. TDMM.* Page 20-20

Who will be able to provide information about the intended location of the network interface?

*Access provider (AP) *Builder in the case of subdivisions and multi-dwelling buildings TDMM.* Page 20-20

Who should you contact if a visual inspection reveals improper connections in the grounding system?

Access Provider (AP) TDMM.* Page 20-20

How high should a TO be mounted in a residential telecommunications system?

At the same height as nearby electrical outlets TDMM.* Page 20-21

What is the installed height requirement for a wall- mounted telephone jack in a residential unit?

220-1320 mm (48-52 in) above the floor Note: This may be adjusted to accommodate the needs of various tenants. TDMM.* Page 20-21

What does acceptance testing include for residential cabling systems?

*Visual examination *Verification of all cabling *Qualification of copper cabling for data cabling *Certification of copper and fiber cabling for data cabling TDMM.* Page 20-24

When are the two steps of verification testing performed?

1 .Prior to the installation of insulation and drywall 2.During the trim-out stage of cabling after painting TDMM.* Page 20-24

Why is verification testing performed?

To ensure end-to-end connectivity TDMM.* Page 20-24

What is the purpose of verification testing for coaxial cable?

To ensure continuity TDMM.* Page 20-24

What is included in testing for twisted-pair cabling?

*Wire map * Length * Continuity to the remote end * Shorts between two or more conductors * Crossed pairs Reversed pairs *Split pairs *Any other miswiring TDMM.* Page 20-24

If implemented, when should certification be performed?

During the permanent link configuration TDMM.* Page 20-24

How should multi-dwelling residences be administered?

In the same manner as a commercial building TDMM.* Page 20-25

Chapter 20 Flashcards

(68 cards)