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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

CTR

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

Living Area

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

NID

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

What does Grade 1 residential
telecommunications
cabling provide?

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

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

Category 6
TDMM.* Page 20-2

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

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

Category 6
TDMM.* Page 20-2

How well did you know this?

Not at all

Perfectly

What topology is used to
install residential cabling?

Star topology
TDMM.* Page 20-2

How well did you know this?

Not at all

Perfectly

What is the maximum length
for each outlet cable?

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

How well did you know this?

Not at all

Perfectly

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

At least one
TDMM.* Page 20-3

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

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

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

How well did you know this?

Not at all

Perfectly

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

How well did you know this?

Not at all

Perfectly

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