Week 37 Chapter 20 - Pages 20-1 to 20-25 Flashcards

1
Q

Optical fiber ADO cable should accommodate a minimum of ___ strands per living unit.

a. 1
b. 2
c. 4
d. 6

A

c. 4

p 20-6

Optical fiber ADO cable should:
• Use multimode, singlemode, or both types of cable.
• Accommodate a minimum of four strands per living unit to provide for:
––Telephone lines.
––Data.
––CATV.
––Security.
––Multimedia service
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2
Q

To provide for future growth, equip the DD to add ___ to ___ percent more cable runs than the original installed number of runs.

a. 10 to 15
b. 15 to 25
c. 20 to 50
d. 30 to 55

A

c. 20 to 50

p 20-7

Many DDs are sized to fit within the stud spacing in a wall ≈368 mm (14.5 in) and may be as tall as ≈1370 mm (54 in)

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3
Q

A residential unit with 20 outlets/connectors, grade 2 requires enclosure heights of ___

a. 18” to 36”
b. 28” to 42”
c. Multiple 28” to 36”
d. Multiple 28” to 42”

A

d. Multiple 28” to 42”

p 20-7 Table 20.2

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4
Q

A residential unit with 10 outlets/connectors, grade 2 requires enclosure heights of ___

a. 18” to 36”
b. 28” to 42”
c. Multiple 28” to 36”
d. Multiple 28” to 42”

A

b. 28” to 42”

p 20-7 Table 20.2

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5
Q

Access to the building electrical ground shall be provided within ___ ft of the conductive cable terminations in the EF in accordance with applicable codes.

a. 2
b. 3
c. 4
d. 5

A

d. 5

p 20-10

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6
Q

___ testing of the cabling shall be performed to ensure proper end-to-end connectivity.

a. Qualification
b. Verification

A

b. Verification

p 20-24

Coaxial cable shall be verified to ensure continuity.
Twisted-pair cabling test shall include:
• Wire map.
• Length.
• Continuity to the remote end.
• Shorts between any two or more conductors.
• Crossed pairs.
• Reversed pairs.
• Split pairs.
• Any other miswiring
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7
Q

___ of voice and data cabling is preferred over ___ testing during the trimout stage of cabling.

a. Qualification, verification
b. Verification, qualification

A

a. Qualification, verification

p 20-24

Cable qualification tests the cabling to determine that certain network technologies (e.g., 1000BASE-T, 100BASE-T, Firewire™) will perform on the cabling system. Cable qualification shall be performed using network equipment installed on the cabling or by use of a qualification test instrument.

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8
Q

Certification may be used in lieu of verification testing or cable qualification testing of data cabling during the trim-out stage of cabling.

a. True
b. False

A

a. True

p 20-24

Certification may be used in lieu of verification testing or cable qualification testing of data cabling during the trim-out stage of cabling.

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9
Q

Certification testing, when implemented, should be done in the ___ configuration.

a. Horizontal link
b. Channel link
c. Permanent link
d. Top down

A

c. Permanent link

p 20-24

Certification tests the cabling to all performance criteria of a category of cable. Certification testing, when implemented, should be done in the permanent link configuration.

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10
Q

The permanent link refers to the permanent part of the cabling installed from the ___ to the outlet and the connectors.

a. ADO
b. DD
c. CTR
d. NID

A

b. DD

p 20-24

The permanent link refers to the permanent part of the cabling installed (e.g., cable up to ≈90 m [295 ft] from the DD to the outlet and the connectors) without patch cords installed on each end of the cable.

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11
Q

When providing a label within the DD denoting each cable run, identify each cable run by room and length.

a. True
b. False

A

b. False

p 20-25

At a minimum, provide a label within the DD denoting each cable run. Identify each cable run by room and wall locations.

For example, B1-N could denote a telecommunications outlet/connector on the north wall of bedroom one.

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12
Q

When designing a residential telecommunications cabling system for a multi-dwelling unit, a common telecommunications room (CTR) should be located on:

a. Every second floor, or every third floor
b. Each floor, or every third floor
c. Each floor, or every second floor

A

b. Each floor, or every third floor

p 20-11

The CTR is the space where backbone and ADO cables terminate. A CTR should be located on each floor, or every third floor, thus serving the floor it is on and the floors above and below.

Note, similar to Chapter 8 - backbone bonding conductor (BBC) - the BBC be installed on the top floor of a building and on every third floor between the ground floor and top floor of the building.

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13
Q

With residential cabling, optical fiber backbone cabling may be implemented in a _____ topology.

a. Ring or bus
b. Bus or star
c. Star or ring

A

c. Star or ring

p 20-5

Optical fiber cabling may be implemented in a star or ring topology

A star topology should be implemented for balanced twisted-pair cabling. Coaxial backbone cable may be implemented using a star, bus, or star and bus topoloy

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14
Q

In residential cabling, an optical fiber auxiliary disconnect outlet (ADO) cable should accommodate a minimum of _____ strands per living unit.

a. Four
b. Three
c. Two

A

a. Four

p20-6

Accommodate a minimum of four strands per living unit to provide for:
––Telephone lines.
––Data.
––CATV.
––Security.
––Multimedia service
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