Deck 1: BICSI Registered Communications Distribution Designer - RCDD

Question 1

Which electrical characteristic is displayed with the correct preferred value?

A) Dielectric constant - high value
B) Dielectric strength - high value
C) Dissipation factor - low value
D) Insulation resistance - high value

Answer 1

A

Question 2

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

A) Conductive
B) Inductive
C) Reactive
D) Capacitive
E) Electromagnetic

Answer 2

C

Question 3

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?

A) 0 percent
B) 36 percent
C) 50 percent
D) 80 percent
E) 100 percent

Answer 3

B

Question 4

Wave division multiplexing (WDM) is most similar to:

A) Amplitude modulation
B) Frequency modulation
C) Time division multiplexing
D) Frequency division multiplexing
E) Carrier sense multiple access with collision detection (CSMA/CD)

Question 5

All of the following are nominal wavelengths for laser light sources EXCEPT:

A) 700 nm
B) 850 nm
C) 1300 nm
D) 1310 nm
E) 1550 nm

Question 6

Optical transmitters are typically one of the following types EXCEPT:

A) Light-emitting diode (LED)
B) Short wavelength laser compact disc (CD)
C) Vertical cavity surface emitting laser (VCEL)
D) Laser diode (LD)
E) Overfilled launch (OFL)

Question 7

Which characteristic is an advantage of copper based media over optical fiber cable?

A) Weight
B) Corrosion resistance
C) Ability to handle analog signals
D) Susceptibility to EMI
E) Very high data rates

Question 8

You must place CAT6 cable above a factory floor with automated welding machines and hammer forges. Of the following, what type of shielding would be most effective?

A) Multi-layer braid
B) Foil and braid
C) Solid metallic conduit
D) Flex metallic conduit
E) Sch. 40 PVC conduit

Question 9

Composite conductors, although not generally recommended, may be used in special circumstances because they provide all of the following advantages EXCEPT:

A) Have good digital transmission characteristics
B) Lightweight
C) Inexpensive
D) Easy to produce
E) Easily embedded into other materials

Question 10

Which is an advantage of stranded conductors over solid conductors?

A) Less costly
B) Simpler terminations
C) Better high frequency performance
D) More flexible

Question 11

You must place a cable between 2 equipment locations with separate grounds having a potential difference between them of 2.1 V rms. Which one of the following cables should NOT be used?

A) Multimode
B) Singlemode
C) UTP
D) STP

Question 12

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.

A) 0.2 c
B) 0.4 c
C) 0.6 c
D) 08 c
E) 0.9 c

Question 13

A video camera has a coaxial cable output. The video signal is to be distributed to devices that have balanced twisted pair inputs. The transition between these two different transmission media can be accomplished by using a:

A) Balun
B) Converter
C) Modulator
D) Cross connect
E) Transceiver

Question 14

Time division multiplexing (TDM) systems are designed to transport ________ between end point systems.

A) Only analog signals
B) Only digital signals
C) A mix of both analog and digital signals
D) Both analog and digital signals, but only one type at a time

Question 15

If the input signal power to a communication system is 1 W and the output power is 1 mW, the system attenuation is:

A) 3 dB
B) 20 dB
C) 30 dB
D) 40 dB
E) 1000 dB

Question 16

A SONET OC-1 channel can carry 672 voice signals and has a data rate of 51.84 Mbps. A SONET OC-48 channel can carry 32,256 voice channels. What MINIMUM data rate is required for the OC-48 channel?

A) 155 Mbps
B) 622 Mbps
C) 2.5 Gbps
D) 5 Gbps
E) 10 Gbps

Question 17

The conversion of an analog speech signal to a pulse code modulation (PCM) digital signal involves all of the following steps EXCEPT:

A) Low pass filtering
B) Periodic sampling
C) Quantizing
D) Companding
E) Amplitude modulation

Question 18

Two sinusoidal signals have the same amplitude (A) and the same frequency (f). They differ in phase by 180 degrees. If these two signals are added together, the result is a sinusoidal signal having an amplitude of:

A) Zero
B) 0.707A and a frequency of f
C) A and a frequency of 2f
D) 2A and a frequency of f
E) 2A and a frequency of 2f

Question 19

The signal at the input to a balanced twisted pair cable is 10 mW. The cable is 1000 feet long and has an attenuation of 1 dB per 100 feet. This cable is connected to the input of a receiver. The noise level at the input to the receiver is 1 microwatt. What is the signal-to-noise ratio (SNR) (dB) at the receiver input?

A) 10 dB
B) 30 dB
C) 40 dB
D) 60 dB
E) 100 dB

Question 20

The public telephone system is an example of a __________ system.

A) Simplex
B) Half-duplex
C) Full-duplex
D) Purely analog
E) Purely digital

Question 21

A common mode (CM) signal can be converted to a differential mode (DM) signal as a result of a(n):

A) Unbalanced circuit
B) Grounded circuit
C) Poorly timed signal
D) Improper dielectric material

Question 22

You must extend a video systems backbone coax cable that was recently installed. Which of the following coaxial cable types would provide the best performance for both analog and digital video?

A) Series 6
B) Series 11
C) RG 16
D) RG 59
E) RG 62

Question 23

Which of the following is NOT a design consideration for broadband video distribution?

A) Amplifier link budgets
B) Adhering to the 90 meter (295 feet) rule for horizontal distribution
C) Amplifier cascade limitations
D) Environmental factors
E) Drop length

Question 24

Which of the following is NOT a source of electromagnetic interference (EMI)?

A) Copiers
B) Transformers
C) Incandescent lights
D) Fluorescent lights
E) Electrical power supply cable

Question 25

You are placing Category 6 unshielded twisted-pair (UTP) in cable tray down a hallway past the elevator mechanical room. What action should you take to avoid effects of electromagnetic interference (EMI)?

A) Provide a minimum separation of 1194 mm (47 in)
B) Provide a minimum separation of 2060 mm (81 in)
C) Require the architect to install metallic foil shielding on the mechanical room walls
D) Provide RMC/IMC (rigid metallic conduit/intermediate metal conduit) through all areas within 4.6 m (15 ft) of the mechanical room

Question 26

The electromagnetic spectrum of visible light lies in the ___________ frequency range of the spectrum.

A) 1 GHz
B) 100 GHz
C) 10 THz
D) 1 PHz
E) 100 PHz

Question 27

What is the recommended MINIMUM separation of unshielded twisted-pair (UTP) cables from fluorescent light fixtures?

A) 77 mm (3 in)
B) 30 mm (5.12 in)
C) 203 mm (8 in)
D) 324 mm (12.75 in)
E) 483 mm (19 in)

Question 28

The ability of a device to withstand electromagnetic disturbances from another device is:

A) Electromagnetic interference (EMI)
B) Radio Frequency Interference (RFI)
C) (EMC)
D) Fast transients
E) Electrostatic Discharge (ESD)

Question 29

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?

A) Class B
B) Class C
C) Class D
D) Class E
E) Class F

Question 30

What is the frequency rating of an International Organization for Standardization/International Electrotechnical Commission (ISO/IEC) Category 7/Class F cable?

A) 100 MHz
B) 250 MHz
C) 500 MHz
D) 600 MHz
E) 1000 MHz

Question 31

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?

A) Electromagnetic interference (EMI)
B) Radio frequency interference (RFI)
C) (EMC)
D) Fast transients
E) Electromagnetic discharge (ESD)

Question 32

What is the connector of choice for Series 59, Series 6, and Series 11 applications?

A) F-Style
B) Bayonet Neill-Conncelman (BNC-Style)
C) N-Style
D) SMA
E) Ultra high frequency (UHF)

Question 33

Which of the following is an undesirable electromagnetic effect on a device(s)?

A) (EMC)
B) Electromagnetic interference (EMI)
C) Radio frequency interference (RFI)
D) Fast transients
E) Electrostatic discharge (ESD)

Question 34

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?

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 35

The potential for ______ occurs when devices or systems share a common electromagnetic environment and their operational frequencies overlap.

A) Electromagnetic interference (EMI)
B) (EMC)
C) Radio frequency interference (RFI)
D) Fast transients
E) Electrostatic discharge (ESD)

Question 36

What is the insertion loss guideline for a multimode mechanical splice?

A) 0.05 dB
B) 0.1 dB
C) 0.3 dB
D) 0.5 dB
E) 1.0 dB

Question 37

What type of optical fiber is used primarily for outside plant (OSP) applications?

A) Tight-buffer
B) Loose-tube
C) Breakout style
D) Duplex zip cord
E) Ribbon

Question 38

What is the testing frequency of a Category 6/Class E cable?

A) 100 MHz
B) 200 MHz
C) 250 MHz
D) 500 MHz
E) 600 MHz

Question 39

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?

A) 8 - 9 micron singlemode
B) 50 micron multimode
C) 50 micron laser optimized multimode
D) 62.5 micron multimode

Question 40

You have discovered a common mode current on the metallic cable sheaths of your building riser cables. What is the MOST likely cause for you to investigate?

A) Lack of cable protection
B) Two separate and distinct ground references
C) Improper secondary protection
D) Improper physical protection of cable
E) Improper placement and/or termination of cables

Question 41

The RJ-45 is now known as the 8P8C style connector, per the Telecommunications Industry Association (TIA) standard. What does the P and C stand for?

A) Plug and connector
B) Position and connector
C) Position and contact
D) Plug and contact

Question 42

When installing outlet boxes in ten private offices in an area which may prove to be difficult to install future additional telecommunications outlets, the MINIMUM quantity of outlet boxes that should be installed is:

A) 10
B) 20
C) 30
D) Based on the type of cabling specified

Question 43

An open office design is made up of three furniture clusters and contains a total of nine. How many multiuser telecommunications outlet assemblies (MUTOA) should be in the design?

A) 1
B) 3
C) 4
D) 6
E) 9

Question 44

Which of the following is NOT an example of a perimeter pathway?

A) Furniture pathways
B) Surface raceways
C) Multi channel raceways
D) Under carpet cabling
E) Raceways integrated within walls

Question 45

The MINIMUM separation distance between grounded metal telecommunications pathway and unshielded power lines is:

A) 75 mm (3 in)
B) 150 mm (6 in)
C) 300 mm (12 in)
D) 610 mm (24 in)
E) 1220 mm (48 in)

Question 46

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

A) Ribbon
B) Tight buffered
C) Loose tube
D) Air blown

Question 47

Which of the following is NOT true about consolidation points?

A) They are not to be used for direct connections to active equipment.
B) They allow horizontal cables to be extended into work area pathways.
C) They are to be terminated on separate connectors for each individual user.
D) The maximum length of cable from the consolidation point (CP) to the outlet varies by media type.

Question 48

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

A) LC
B) ST
C) SFF
D) S/FTP
E) SC

Question 49

The ability of a conductors insulation to transmit an electric field is called:

A) Conductivity
B) Transmitability
C) Permittivity
D) Capacitance
E) Reactance

Question 50

This type of cable is an unbalanced system:

A) Unshielded twisted-pair (UTP)
B) Shielded twisted-pair (STP)
C) Screened twisted-pair (ScTP)
D) Coaxial

Question 51

A telecommunications outlet/connector may be provided using all listed below EXCEPT:

A) Wireless AP connectivity
B) Balanced twisted-pair outlets
C) Optical fiber connectors
D) 4p4c (4 position, 4 contact) connector

Question 52

If looking to specify an optical fiber backbone within a building going 275 m (902 ft) between the equipment room (ER) and the telecommunications room (TR), what type of fiber should be specified to support a 10 GB ethernet application?

A) OM1
B) 50 micron multimode
C) 50 micron laser optimized multimode
D) 62.5 micron multimode

Question 53

Which of the following is true about screened twisted pair cable assemblies?

A) The drain wire and screen foil must be bonded at one end only.
B) The drain wire and screen foil must be bonded at every connection.
C) There is no need to bond the screen foil or drain because it is not important.
D) The drain wire and screen foil must be separately bonded at opposite ends.

Question 54

On a project with three small conference rooms, a break room, and twelve private offices, what is the MINIMUM number of telecommunications outlet boxes required?

A) 16
B) 24
C) 28
D) 40
E) 46

Question 55

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:

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 56

Important considerations when designing telecommunications distribution within modular furniture include all of the following EXCEPT:

A) How the furniture pathways will be connected to horizontal building pathways
B) Separation of telecommunications cabling and electrical power
C) Diameter of cable to be installed
D) Maximum initial fill ratio of 40 percent when derated because of corners

Question 57

You are extending 1000 MHz video service from your existing headend to a new equipment room (ER). Your existing incoming video signal is plus (+) 15 dBmV. You have three two-way splitters with a total of minus (-) 15 dB. You are adding 122 m (400 ft) of series 11 (RG 11) cable with a minus (-) 18 dB with eight single end F-connectors with a total of minus (-) 1.2 dB. From the selections below, what is the MINIMUM gain amplifier required in the headend room?

A) Plus (+) 15 dB
B) Plus (+) 20 dB
C) Plus (+) 25 dB
D) Plus (+) 30 dB
E) Plus (+) 35 dB

Question 58

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:

A) 25
B) 40
C) 50
D) 60

Question 59

When specifying telecommunications outlet boxes, all of the following should be considered EXCEPT:

A) Outlet box shall be a minimum of 100 mm (4 in) x 100 mm (4 in) x 76 mm (3 in)
B) Outlet boxes should be installed near an electric outlet at the same height
C) Different outlet boxes have different support requirements
D) Floor mounted telecom outlet boxes should be coordinated with furniture to minimize the potential trip hazard
E) Outlet boxes must be of adequate size so that minimum cable bend radius requirements are not exceeded

Question 60

A furniture cluster with 26 requires a MINIMUM of how many multiuser telecommunications outlet assembly (MUTOA)?

A) 1
B) 2
C) 3
D) 4
E) 5

Question 61

From a 1000 ft (305 m) roll of optical fiber, how many MAXIMUM length centralized optical fiber cabling runs can be made?

A) 1
B) 2
C) 3
D) 4
E) 5

Question 62

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?

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 63

Which of the following is true when describing slip sleeves or gutters?

A) More costly than pull boxes
B) Can be used as a splice location
C) Provides more space for pulling
D) Cannot be used in place of a pull box
E) Must be equal in size to the main conduit

Question 64

Which of the following is NOT considered acceptable in an information technology system (ITS) conduit design and installation?

A) Contains no continuous sections longer than 30 m (100 ft)
B) Bonded to ground on one or both ends in accordance with national or local code requirements
C) Will withstand the environment to which they were exposed
D) Uses flexible conduit to access wall outlets
E) Avoid routing conduit over or adjacent to heat sources

Question 65

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

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 66

When designing a backbone distribution system, you are asked to include a combination of media types. Your choice of media types include:

A) Copper and fiber only
B) Fiber and wireless only
C) Fiber and coaxial cable only
D) Wireless and coaxial cable only
E) Any combination of copper, fiber, and wireless

Question 67

When designing a backbone distribution system, you will need to include a telecommunications enclosure (TE). A TE can be defined as a:

A) Splice point for copper cabling only
B) Point where the backbone cabling interfaces to the horizontal cabling and may be utilized in place of a traditional Telecommunications Room (TR)
C) Location for housing building cross-connect cabling only
D) Location to house the splice transitioning from outdoor to indoor cabling only
E) Facility to store slack copper and fiber cables

Question 68

You are designing a horizontal pathway system where you will provide 100 mm (4 in) conduit and pull boxes. The building architectural elements will only allow for a single layer of conduits (not stacked). The main horizontal pathway system consists of five 100 mm (4 in) conduits. Large single sheath copper cables are not expected to be placed. Which of the following is the MINIMUM width pull box that is to be provided?

A) 600 mm (24 in)
B) 900 mm (36 in)
C) 1220 mm (48 in)
D) 1520 mm (60 in)
E) 1830 mm (72 in)

Question 69

The MINIMUM finished height of access flooring in a general office area is:

A) 50 mm (2 in)
B) 150 mm (6 in)
C) 200 mm (8 in)
D) 250 mm (10 in)
E) 300 mm (12 in)

Question 70

Which of the following is NOT an advantage of access floor systems?

A) They have a low initial cost
B) They are designed for high capacity
C) They are aesthetically acceptable for office decor
D) Cabling is easily accessible across the entire floor
E) Changes can be made quickly with little occupant disruption

Question 71

Cables are installed in a ceiling in a straight line. The ceiling run is 60 m (200 ft) in length. What is the MINIMUM number of J-hooks required to support the cables?

A) 20
B) 30
C) 40
D) 50
E) 60

Question 72

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

A) 9.3 sq m (100 sq ft)
B) 23 sq m (250 sq ft)
C) 31 sq m (330 sq ft)
D) 56 sq m (600 sq ft)
E) 84 sq m (904 sq ft)

Question 73

Perimeter raceway systems should be used primarily for:

A) Underfloor pathway
B) Apartments or hotels where molding is accessible in the work area
C) Warehouses with minimal telecommunications services
D) Small floor areas where the majority of telecommunication services will be along the walls
E) Equipment rooms where cable tray is cost prohibitive

Question 74

Using the "pathway design" for horizontal cable distribution, how many cable runs are placed to serve 15 individual?

A) 15
B) 30
C) 45
D) 60

Question 75

An existing ceiling raceway system has 115,000 sq mm (177 sq in) of cross-sectional area available for distribution of cable runs. How many can be served by the existing system?

A) 115
B) 160
C) 177
D) 189
E) 195

Question 76

When placing an optical fiber cable in the horizontal optical fiber cabling subsystem, what is the MAXIMUM number of splices that can be used?

A) 1
B) 2
C) 3
D) 4
E) 5

Question 77

Which type of cable tray is best described as a ventilated bottom with side rails?

A) Ventilated channel
B) Ladder
C) Spline
D) Ventilated trough
E) Basket tray

Question 78

In the ceiling zone method of distribution, the usable floor area should be divided into zones each measuring:

A) 9.3 sq m (100 sq ft) to 23 sq m (250 sq ft)
B) 23 sq m (250 sq ft) to 56 sq m (600 sq ft)
C) 23 sq m (250 sq ft) to 84 sq m (904 sq ft)
D) 56 sq m (600 sq ft) to 84 sq m (904 sq ft)
E) 56 sq m (600 sq ft) to 100 sq m (1,100 sq ft)

Question 79

Which of the following statements best describes what a backbone distribution system typically provides?

A) Cabling from the HC to the WA
B) Pathway from the HC to the WA
C) Conduit in a building riser
D) Building connections between floors in a multistory building
E) Copper cabling installed in a large building

Question 80

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?

A) 2
B) 3
C) 4
D) 5