Chapter 12 - Outside Plant Flashcards
The term “soft digging” describes the use of _____ for the purpose of locating underground utilities.
a. Surface geophysical techniques
b. Surveying
c. Energy-field detection
d. Vacuum-excavation
d. Vacuum-excavation
p 12-26
Locating by the use of nondestructive vacuum-excavation (also known as soft digging) equipment, or other means, to expose buried utilities at critical points.
Entrance facility underground conduit entering a building at ceiling height should terminate _____ inches below the finished ceiling height.
a. 4
b. 6
c. 8
d. 12
a. 4
p 12-22
Ceiling height to terminate ≈101.6 mm (4 in) below the finished ceiling.
The ICT distribution designer should design conduits entering from:
• Basement wall to terminate ≈101.6 mm (4 in) from the finished wall.
• Below grade point to extend ≈101.6 mm (4 in) above finished floor (AFF).
When sizing underground entrance conduits, the designer should specify a minimum of _____ 103 metric designator (4 trade size) conduits for each telecommunications service entrance point.
a. 4 plus 2 spare
b. 4 plus 1 spare
c. 3 plus 1 spare
d. 2 plus 2 spare
b. 4 plus 1 spare
p 12-6
The ICT distribution designer should specify a minimum of four 103 metric designator (4 trade size) conduits. One spare 103 metric designator (4 trade size) conduit should be considered for each telecommunications service entrance point.
BICSI recommends that unlisted outside plant cable either be terminated or transitioned to listed cable ___ from its point of entrance into a building.
a. Within 15 m (50 ft)
b. As close as practical
b. As close as practical
p 12-18
BICSI recommends that unlisted, OSP-type cable be terminated or transitioned to listed cable as close as practical upon entry to the building. Per the restrictions of some local AHJs, this termination or transition may not exceed ≈15 m (50 ft) from the point of entrance.
A vertical conduit mast attached to a 50 mm (2 in) grounded galvanized iron pipe is suitable for drop-wire attachments of up to ___ lines.
a. Eight
b. Six
c. Four
d. Two
c. Four
p 12-13
This arrangement is limited to drop-wire attachments of up to four lines.
All maintenance holes (MHs) should be equipped with a sump at least _____ in diameter.
a. 457 mm (18 in)
b. 381 mm (15 in)
c. 330 mm (13 in)
d. 279 mm (11 in)
c. 330 mm (13 in)
p 12-41
A sump at least ≈330 mm (13 in) in diameter or 13 x 13 square for ease of drainage
As an alternative to the traditional backhoe, _____ is the best excavation tool for placing a small conduit or direct-buried cable in the ground.
a. A chain-drive tiller
b. Directional drilling
c. A compact trencher
d. A vibratory plow
d. A vibratory plow
p 12-30
A vibratory plow is best for placing a small conduit or a direct-buried cable. Interchangeable blades for various types of cables are available. Some vibratory plows are equipped to place warning tape above the conduit or cable they are placing.
Direct-buried cabling is considered to be _____ for future service reinforcement or changes.
a. Inflexible
b. Flexible
a. Inflexible
p 12-3
The disadvantages of direct-buried cabling are that it:
• May be inflexible for future service reinforcement or changes.
• Does not provide physical protection to the cable sheath.
When placing an entrance sleeve through a building wall for outside plant cable entry, the sleeve must be:
a. Recessed slightly on the outside of the wall and recessed slightly on the inside of the wall
b. Flush with the wall on the inside and flush with the wall on the outside
c. Flush with the wall on the inside and recessed slightly on the outside of the wall
d. Flush with the wall on the outside and recessed slightly on the inside of the wall
d. Flush with the wall on the outside and recessed slightly on the inside of the wall
p 12-14 Figure 12.6
Radio waves can take different paths for a transmission medium to a radio receiver. Long-distance communications use _____ waves or direct waves for transmission.
a. Ground
b. Sky
b. Sky
p 16-10
Long-distance communications usually use sky waves or direct waves for transmission. Sky waves (see Figure 16.4) are defined as waves that are usable due to reflection and refraction in the ionosphere:
Sectionalizing conduits used for outside plant underground telecommunications service with traditional polyethylene tube or fabric mesh innerduct ___ the amount of cables that can be placed in the conduit.
a. Has no effect on
b. Decreases
c. Increases
c. Increases
p 12-6
Sectionalizing conduits with traditional polyethylene tube or fabric mesh innerduct greatly increases the amount of cables that can be placed in the conduit.
The term entrance _____ refers to inside cabling used to connect to the access provide circuits serving a building.
a. Network
b. Facility
c. Interface
d. Bridge
d. Bridge
p 12-24
Interior applications may consist of separate terminating hardware for both the NI (e.g., AP circuit) and the switch or inside cabling (sometimes called the entrance bridge). Other interior NIs can be a direct connection to equipment.
When the joint trench method is used, a minimum separation distance of _____ of concrete must exist between telecommunications facilities and power conduits.
a. 305 mm (12 in)
b. 152 mm (6 in)
c. 101.6 mm (4 in)
d. 77 mm (3 in)
d. 77 mm (3 in)
p 12-28 Table 12.3
All communications poles of the same class used for aerial plant must be able to withstand the same horizontal load applied _____ from the top of the pole.
a. 1219 mm (49 in)
b. 914 mm (36 in)
c. 610 mm (24 in)
d. 305 mm (12 in)
c. 610 mm (24 in)
p 12-47
All poles of the same class, regardless of length and timber species, must be able to withstand the same horizontal load applied ≈610 mm (24 in) from the top of the pole.
The color _____ has been adopted by the Common Ground Alliance for warning tape buried above telecommunications and CATV cables.
a. White
b. Yellow
c. Red
d. Orange
d. Orange
p 12-27
The Common Ground Alliance has adopted the color orange for telecommunications and CATV cables.
