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BICSI RCDD Registered Communications Distribution Designer Exam Practice Test

Demo: 53 questions
Total 358 questions

Registered Communications Distribution Designer Questions and Answers

Question 1

The MOST common medium used to provide service to the access point (AP) is ________ cable.

Options:

A.

Singlemode optical fiber

B.

Multimode optical fiber

C.

Unbalanced twisted pair

D.

Balanced twisted pair

Question 2

What is the MINIMUM number of outside building terminal pedestals required to serve a single story office, or office warehouse structure that has ten 18.3 m x 24 m (60 ft x 80 ft) units and the total building length is 183 m (600 ft)?

Options:

A.

One

B.

Two

C.

Four

D.

Six

E.

Ten

Question 3

To reduce the chance of an accidental dig-up, plastic warning tape should be placed a MINIMUM of _________ below grade, but high enough above cables to allow detection before cables are damaged.

Options:

A.

101 mm (4 in)

B.

203 mm (8 in)

C.

300 mm (12 in)

D.

381 mm (15 in)

E.

457 mm (18 in)

Question 4

Where backbone cabling exceeds cabling lengths for the same performance or design (for product used in horizontal cabling), there are three fundamental tests which should be considered when testing. They are:

Options:

A.

Insertion loss (attenuation), return loss, and wiremap/strand identification

B.

Insertion loss (attenuation), return loss, and continuity

C.

Insertion loss (attenuation), return loss, and length

D.

Insertion loss (attenuation), continuity, and wiremap/strand identification

E.

Continuity, wiremap/strand identification, and propagation delay/delay skew

Question 5

You have been asked to test and troubleshoot an installed base of cabling that is believed to be causing network problems. You are finding that there are high levels of return loss upon initial testing. What testing will best determine the reasons for these failures?

Options:

A.

Power meter

B.

Continuity testing

C.

Level II testing

D.

Time domain reflectometer (TDR)

Question 6

When balanced twisted-pair copper cabling, return loss is a measurement of the:

Options:

A.

Worst case difference in magnitude between the expected insertion loss and the actual measured insertion loss

B.

Reflection of signal power resulting from the insertion of a device in a transmission line (in dB)

C.

Signal coupling between any two pairs along the entire length of the cabling

D.

Loss in signal resulting from the insertion of a component, of link, or channel, between a transmitter and a receiver

E.

Time required for a signal to travel from one end of the transmission path to the other end

Question 7

Which is an advantage of stranded conductors over solid conductors?

Options:

A.

Less costly

B.

Simpler terminations

C.

Better high frequency performance

D.

More flexible

Question 8

Assume that the optical power transmitted by a 62.5/125 multimode fiber is distributed uniformly across its core. If this fiber is perfectly coupled (i.e., the two fibers are aligned and abutted) to a 50/125 fiber, what is the percent of power that is lost?

Options:

A.

0 percent

B.

36 percent

C.

50 percent

D.

80 percent

E.

100 percent

Question 9

A reasonable approximation for the signal speed in 100 ohm balanced twisted pair cable is __________, where c is the velocity of light in free space.

Options:

A.

0.2 c

B.

0.4 c

C.

0.6 c

D.

08 c

E.

0.9 c

Question 10

An active video converter is used in what type of CATV cable distribution system?

Options:

A.

Trunk and tap

B.

Video over balance twisted-pair

C.

Video over optical fiber

D.

Home run

Question 11

Active video converters are required for what type of CATV distribution system?

Options:

A.

Video over balanced twisted-pair

B.

Trunk and tap

C.

Home run

D.

Video over optical fiber

Question 12

You are designing a building with a combination of Class A commercial office spaces and residences. The design program requires having unlimited cable channels available at all outlet locations. What distribution system topology will NOT provide adequate channel distribution to each location?

Options:

A.

Video over balanced twisted-pair

B.

Trunk and tap

C.

Home run

D.

Video over optical fiber

Question 13

What is the expected life cycle, in years, of building automation system within a building structure with a life cycle of 40+ years?

Options:

A.

1 to 2

B.

2 to 4

C.

5 to 7

D.

8 to 12

E.

12 to 15

Question 14

Within a heating ventilation and air conditioning automatic control system, what do the letters DDC stand for?

Options:

A.

Dual division charger

B.

Direct digital control

C.

Diverse duct center

D.

Direct drive cable

E.

Differential diffuser control

Question 15

What type of facility requires a building automation system (BAS) device to be located every 5 sq m (50 sq ft)?

Options:

A.

Hotel guest room

B.

Education classroom

C.

Hospital

D.

Mechanical room

E.

Factory

Question 16

What is the International Organization for Standardization/International Electrotechnical Commission ISO/IEC class rating for American National Standards Institute/Telecommunication Industry Association (ANSI/TIA) Category 5e cable?

Options:

A.

Class B

B.

Class C

C.

Class D

D.

Class E

E.

Class F

Question 17

There are three buildings approximately 400 meters apart and the customer wants to use 10 Gig Ethernet. What fiber should be specified for this application?

Options:

A.

8 - 9 micron singlemode

B.

50 micron multimode

C.

50 micron laser optimized multimode

D.

62.5 micron multimode

Question 18

What type of fiber optic cable is manufactured to protect individual glass strands and is primarily designed for use inside buildings?

Options:

A.

Ribbon

B.

Tight buffered

C.

Loose tube

D.

Air blown

Question 19

To accommodate telephone, data, CATV, security and multimedia, a MINIMUM of ________ strands of optical fiber auxiliary disconnect outlet (ADO) cable should be provided.

Options:

A.

Two

B.

Four

C.

Five

D.

Six

E.

Eight

Question 20

You are designing distribution for a seven unit townhouse with in slab conduits. What is the MINIMUM number of 27 mm (1 in) rigid PVC Type 2 or metallic conduit that is required to satisfy distribution to each unit?

Options:

A.

Three

B.

Four

C.

Five

D.

Seven

E.

Fourteen

Question 21

You are designing a system requiring the transmission of data. Your system must perform higher than ________ kHz in order to do so.

Options:

A.

4

B.

8

C.

10

D.

16

E.

32

Question 22

A properly designed distributed paging system will provide a sound pressure level (SPL) for audio paging that is between ________ above ambient noise level.

Options:

A.

3 dB and 6 dB

B.

6 dB and 10 dB

C.

10 dB and 20 dB

D.

20 dB and 55 dB

Question 23

What is the recommended distance between ceiling mounted speakers in a hallway with heavy traffic?

Options:

A.

2.4 m (8 ft)

B.

3.7 m (12 ft)

C.

4.9 m (16 ft)

D.

6 m (20 ft)

Question 24

What are the three typical voltages used in centrally amplified paging systems?

Options:

A.

24, 48, and 90

B.

25, 70, and 100

C.

25, 90, and 120

D.

48, 90, and 120

Question 25

You are required by architectural design to place UTP cables in the same space as unshielded power lines. How should you proceed with the placement of your cables?

Options:

A.

Require the architect/electrical engineer to place shielding in the space before your UTP is placed.

B.

You should provide a minimum separation of 610 mm (24 in).

C.

You should provide a minimum separation of 229 mm (9 in).

D.

You should provide a minimum of two 101 mm (4 in) RMC.

Question 26

Which of the following is NOT a form of signal coupling between two (2) circuits?

Options:

A.

Conductive

B.

Inductive

C.

Reactive

D.

Capacitive

E.

Electromagnetic

Question 27

During a site survey you notice that several CRT displays in the vicinity of the engineering copy center have sporadic visual distortion. What is the MOST likely cause?

Options:

A.

Electromagnetic interference (EMI)

B.

Radio frequency interference (RFI)

C.

(EMC)

D.

Fast transients

E.

Electromagnetic discharge (ESD)

Question 28

Class ________ administration provides for the telecommunications infrastructure administration needs of a single building, or of a tenant served by a single or multiple. It also includes administration for backbone cabling, systems, and.

Options:

A.

1

B.

2

C.

3

D.

4

Question 29

Color codes for cross-connection fields have been used for many years. Which color is used to identify network connections?

Options:

A.

Green

B.

Orange

C.

Purple

D.

Yellow

E.

Brown

Question 30

Assume the following:

- An equipment room (ER) consists of 16 racks arranged in 4 equal rows

- The first 4 racks are numbered R1-1 though R1-4

- The second 4 racks are numbered R2-1 through R2-4

- A new equipment shelf with 12 slots is to be installed in the bottom of the third rack in the second row

- Each slot has 2 ports

What would be the identifier of the two ports on the eighth slot of the new equipment shelf?

Options:

A.

R2-3-1-8-1 and R2-3-1-8-2

B.

R3-2-1-8-1 and R3-2-1-8-2

C.

R2-3-1-12-1 and R2-3-1-12-2

D.

R3-2-1-12-1 and R3-2-1-12-2

E.

R2-3-12-8-1 and R2-3-12-8-2

Question 31

Assuming the total fill capacity of a pathway is 100 cables (all of the same cable type and size), the MAXIMUM number of cables to be installed during the initial installation, without exceeding the fill ratio is:

Options:

A.

25

B.

40

C.

50

D.

60

Question 32

Which of the following is NOT a type of connector for optical fiber?

Options:

A.

LC

B.

ST

C.

SFF

D.

S/FTP

E.

SC

Question 33

In a run requiring 15 m (50 ft) of cable between the floor distributor and the consolidation point, the MAXIMUM length of cable allowed between the CP and the telecommunications outlet is:

Options:

A.

27.4 m (90 ft)

B.

36.5 m (120 ft)

C.

45.8 m (150 ft)

D.

75 m (242 ft)

E.

90 m (295 ft)

Question 34

When installing a heavy backbone cabling vertically, recommended methods of securing the cable include all of the following EXCEPT:

Options:

A.

Tie wraps

B.

Brackets

C.

Steel or plastic straps

D.

Collar or mesh basket grips

E.

Steel cable ties

Question 35

One of the advantages of using optical fiber in the backbone installation is:

Options:

A.

More cost effective

B.

Immunity to EMI

C.

Safer to install

D.

Requires less skill to install

E.

Has better manufacturer support

Question 36

A campus backbone design linking two buildings requires that you install a high-fiber-count cable very quickly, using the conduit system provided. Cost is not so much an issue as urgency is to meet a service demand. Your first choice of fiber cable installation is to use:

Options:

A.

Multiple sheathed cables with field connectorization

B.

Multiple sheathed cables using pigtail connectorization

C.

Single high fiber count sheathed cable with field connectorization

D.

Single sheathed high-fiber-count cable with pigtail connectorization

E.

Single sheathed cable equipped with preconnectorized assemblies

Question 37

Which layer of the OSI model covers physical cable connections?

Options:

A.

Layer 1

B.

Layer 3

C.

Layer 5

D.

Layer 7

Question 38

The loop distance range in an "ethernet in the first mile" (EFM) design is:

Options:

A.

2 km (1.2 mi)

B.

4.8 km (3 mi)

C.

6.1 km (3.8 mi)

D.

9.7 km (6 mi)

E.

12 km (7.5 mi)

Question 39

A ______ intercepts a file and stores it temporarily in queue until a peripheral device (e.g. printer) is available.

Options:

A.

Server

B.

Spooler

C.

Jump drive

D.

Printer

Question 40

The recommended ratio of patch panels to horizontal cable management panels is ________ RU of patch panel to ________ rack unit (RU) of horizontal cable management panel.

Options:

A.

One; one

B.

One; two

C.

Two; one

D.

Two; three

Question 41

Which of the following types of conduit uses set screw couplings and connectors?

Options:

A.

RMC

B.

EMT

C.

IMC

D.

Schedule 80 PVC

Question 42

What is the MINIMUM ceiling height of a telecommunications room?

Options:

A.

2.1 m (7.0 ft)

B.

2.3 m (7.5 ft)

C.

2.4 m (8.0 ft)

D.

2.6 m (8.5 ft)

E.

2.7 m (9.0 ft)

Question 43

A conduit run is installed from the ER to a TR. It has two (2) 90 degree bend and a length of 20 m (65 ft). What will be the MINIMUM test rating of the pull cord left in the conduit?

Options:

A.

20 kg (44 lb)

B.

40 kg (88 lb)

C.

60 kg (132 lb)

D.

90 kg (200 lb)

E.

100 kg (220 lb)

Question 44

The standard floor space coverage area for each building automation system (BAS), is a BAS outlet or device for every_______ of floor space.

Options:

A.

9.3 m 2 (100 ft 2)

B.

23 m 2 (250 ft 2)

C.

31 m 2 (330 ft 2)

D.

56 m 2 (600 ft 2)

E.

84 m 2 (904 ft 2)

Question 45

You are designing a horizontal distribution system that will have a zone box located 71.6 m (235 ft) away from the telecommunications room (TR). A 50 mm (2 in) conduit is designed from the TR to a pull box located 36.6 m (120 ft) away from the TR. A 1 1/2 inch conduit is designed from the pull box to the zone box located 35.1 m (115 ft) beyond the pull box. Assuming no conduit bends, and excluding the TR and zone box, what is the total number of pull boxes/pull points required in this horizontal conduit system between the telecommunications room (TR) and zone box?

Options:

A.

2

B.

3

C.

4

D.

5

Question 46

Often associated with raised flooring, a(n) ________ may consist of copper straps taped to the concrete floor, or it may be the floor itself with the stringers that support the tiles acting as the bonding conductor across the gradient of the floor.

Options:

A.

Grounding electrode conductor (GEC)

B.

Electrical ground bar (EGB)

C.

Signal reference grid (SRG)

D.

Telecommunications bonding backbone (TBB)

E.

Drain wire

Question 47

As a guide, the MAXIMUM recommended DC current value on any bonded conductor should be less than:

Options:

A.

250 milliamps

B.

500 milliamps

C.

750 milliamps

D.

1 amp

E.

1.25 amps

Question 48

The impedance of the equipment grounding conductor can only be accurately measured with an instrument known as a(n):

Options:

A.

Volt ohm meter

B.

Power distribution unit

C.

Exothermic weld connection

D.

Ground impedance tester

E.

Amp calculator

Question 49

You have been asked to spec the physical security requirements related to the protection of assets for a new data center. The most common potential for damage categories you have considered include temperature, gases, organisms and projectiles. The one category that you have missed is:

Options:

A.

Aircraft flight paths

B.

Proximity to high speed rail links

C.

Liquids

D.

Parking lot exits

E.

Exposure to extreme winds

Question 50

Within a data center, if you have dual path connectivity between the primary entrance room and secondary entrance room, in addition to dual connectivity between these two rooms and the main distribution and secondary distribution areas, what tier level would this infrastructure design represent?

Options:

A.

Tier I

B.

Tier II

C.

Tier III

D.

Tier IV

E.

Tier V

Question 51

If you are working on a physical security plan for a data center and focusing on building and access control, what layer of the plan would this relate to?

Options:

A.

Layer 1

B.

Layer 2

C.

Layer 3

D.

Layer 4

E.

Layer 5

Question 52

For an analog camera, what is the normal frame rate in frames per second?

Options:

A.

18 fps

B.

22 fps

C.

27 fps

D.

30 fps

E.

33 fps

Question 53

You are designing a strobe visual notification system for a fire alarm system. You have a hallway that is 4.6 m (15 ft) wide and 100 m (328 ft) long. How many strobes should be placed in the hallway?

Options:

A.

One

B.

Two

C.

Three

D.

Four

E.

Five

Demo: 53 questions
Total 358 questions