BICSI Registered Communications Distribution Designer – RCDD RCDD-001 Dumps Questions

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

2. Which is an advantage of stranded conductors over solid conductors?

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

4. Which electrical characteristic is displayed with the correct preferred value?

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

6. 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:

7. Which of the following correctly lists the lowest frequency band to the highest frequency band?

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

9. 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?

10. 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?

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

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

13. 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.

14. 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?

15. 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?

16. 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:

17. Optical transmitters are typically one of the following types EXCEPT:

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

19. 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?

20. Wave division multiplexing (WDM) is most similar to:

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

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

23. 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?

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

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

26. 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?

27. 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)?

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

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

30. 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?

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

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

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

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

35. 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?

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

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

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

39. 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?

40. 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?

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

42. 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?

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

44. 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?

45. This type of cable is an unbalanced system:

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

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

48. 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?

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

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

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

52. 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?

53. Which of the following is NOT true about consolidation points?

54. 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:

55. 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:

56. 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?

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

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

59. 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:

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

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

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

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

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

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

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

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

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

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

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

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

72. Perimeter raceway systems should be used primarily for:

73. 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?

74. 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?

75. 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?

76. 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?

77. 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?

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

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

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