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MJ Class > Chapter 20 > Flashcards

Chapter 20 Flashcards

1
Q

ADO

A

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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2
Q

AP

A

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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3
Q

CTR

A

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

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4
Q

DD

A

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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5
Q

DP

A

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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6
Q

Living Area

A

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

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7
Q

MDU

A

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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8
Q

NID

A

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

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9
Q

Permanent Link

A

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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10
Q

Who is responsible for
telecommunications cabling
within residential units?

A

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

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11
Q

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

A
  1. Anticipated long-term services
  2. Maximum flexibility
  3. Convenience of the tenant
    TDMM.* Page 20-1
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12
Q

What does Grade 1 residential
telecommunications
cabling provide?

A

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

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13
Q

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

A
  • 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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14
Q

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

A

Category 6
TDMM.* Page 20-2

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15
Q

What does Grade 2
residential telecommunication
cabling provide?

A

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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16
Q

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

A
  • 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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17
Q

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

A

Category 6
TDMM.* Page 20-2

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18
Q

What topology is used to
install residential cabling?

A

Star topology
TDMM.* Page 20-2

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19
Q

What is the maximum length
for each outlet cable?

A

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

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20
Q

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

A

At least one
TDMM.* Page 20-3

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21
Q

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

A

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

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22
Q

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

A

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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23
Q

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

A

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

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24
Q

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

A
  1. 100-ohm balanced twisted-pair
  2. Multimode optical fiber
  3. Singlemode optical fiber
  4. Trunk, feeder, and distribution
    coaxial cable
    TDMM.* Page 20-5
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25
Q

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

A
  1. Star topology
  2. Bus topology
  3. Star and bus topology
    TDMM.* Page 20-5
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26
Q

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

A
  1. Star topology
  2. Ring topology
    TDMM: Page 20-5
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27
Q

Where does the
ADO cable reside?

A

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

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28
Q

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

A

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

29
Q

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

A

The tenant’s needs
TDMM.* Page 20-5

30
Q

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

A

Series-6
TDMM.* Page 20-5

31
Q

How many coaxial cables
must an ADO cable
accommodate?

A

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

32
Q

Name 2 functions of an ADO.

A
  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
33
Q

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

A

A minimum of 8
TDMM.* Page 20-6

34
Q

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

A

A minimum of 2
TDMM: Page 20-6

35
Q

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

A

4
TDMM.* Page 20-6

36
Q

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

A

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

37
Q

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

A

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

38
Q

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

A

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

39
Q

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

A
  1. Grade of service
  2. Number of telecommunications
    outlet/connectors to be installed
    TDMM.* Page 20-7
40
Q

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

A

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

41
Q

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

A

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

42
Q

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

A

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

43
Q

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

A

1 or more
TDMM: Page 20-8

44
Q

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

A

Category 6A
TDMM: Page 20-8

45
Q

When are weather-resistant
telecommunications outlets
required?

A

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

46
Q

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

A

1
TDMM.* Page 20-9, Table 20.3

47
Q

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

A

2
TDMM.* Page 20-9, Table 20.3

48
Q

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

A

2
TDMM.* Page 20-9, Table 20.3

49
Q

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

A

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

50
Q

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

A

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

51
Q

Where should the CTR
be located?

A

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

52
Q

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

A

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

53
Q

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

A

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

54
Q

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

A

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

55
Q

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

A

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

56
Q

Name 4 items that make up
rough-in cabling.

A
  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
57
Q

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

A

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

58
Q

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

A

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

59
Q

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

A

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

60
Q

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

A

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

61
Q

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

A

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

62
Q

What does acceptance testing
include for residential
cabling systems?

A

*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

63
Q

When are the two steps of
verification testing performed?

A

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

64
Q

Why is verification testing
performed?

A

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

65
Q

What is the purpose of
verification testing for
coaxial cable?

A

To ensure continuity
TDMM.* Page 20-24

66
Q

What is included in testing for
twisted-pair cabling?

A

*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

67
Q

If implemented, when should
certification be performed?

A

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

68
Q

How should multi-dwelling
residences be administered?

A

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

MJ Class (23 decks)

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