RCDD Practice Test Exam With 100% Correct Answers 2024, Exams of Advanced Education

Download RCDD Practice Test Exam With 100% Correct Answers 2024 and more Exams Advanced Education in PDF only on Docsity! RCDD Practice Test Exam With 100% Correct Answers 2024 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 - Correct Answer-C 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 - Correct Answer-B pg. 1 professoraxel A SONET OC-1 channel can carry 672 voice signals and has a data rate of 51.84 Mbps. ASONET 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 - Correct Answer-C 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 - Correct Answer-A A video camera has a coaxial cable output. The video signal is to be distributed to devices that have balanced twisted pair pg. 2 professoraxel 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 - Correct Answer-A 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 - Correct Answer-A Which is an advantage of stranded conductors over solid conductors? A. Less costly pg. 5 professoraxel B. Simpler terminations C. Better high frequency performance D. More flexible - Correct Answer-D 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 - Correct Answer-E 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 pg. 6 professoraxel E. 100 percent - Correct Answer-B Which of the following correctly lists the lowest frequency band to the highest frequency band? A. MF, HF, VHF, UHF B. UHF, VHF, HF, MF C. HF, MF, UHF, VHF D. VHF, UHF, MF, HF E. HF, MF, UHF, VHF - Correct Answer-A 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 - Correct Answer-B 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. pg. 7 professoraxel 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 - Correct Answer-B 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) - Correct Answer-B 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? pg. 10 professoraxel 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. - Correct Answer-B 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 - Correct Answer-C 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 pg. 11 professoraxel D. Improper dielectric material - Correct Answer-A 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 - Correct Answer-D 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) - Correct Answer-A Which of the following is an undesirable electromagnetic effect on a device(s)? pg. 12 professoraxel A. Tight-buffer B. Loose-tube C. Breakout style D. Duplex zip cord E. Ribbon - Correct Answer-B 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 - Correct Answer-C What is the International Organization for Standardization/International ElectrotechnicalCommission ISO/IEC class rating for American National StandardsInstitute/Telecommunication Industry Association (ANSI/TIA) Category 5e cable? A. Class B B. Class C pg. 15 professoraxel C. Class D D. Class E E. Class F - Correct Answer-C There are three buildings approximately 400 meters apart and the customer wants to use10 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 - Correct Answer-A 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. - Correct Answer-B pg. 16 professoraxel 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 - Correct Answer-B 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 (RG11) 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 pg. 17 professoraxel D. Air blown - Correct Answer-B The ability of a conductors insulation to transmit an electric field is called: A. Conductivity B. Transmitability C. Permittivity D. Capacitance E. Reactance - Correct Answer-C 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 - Correct Answer-D What is the frequency rating of an International Organization forStandardization/International Electrotechnical Commission (ISO/IEC) Category 7/Class F cable? A. 100 MHz B. 250 MHz pg. 20 professoraxel C. 500 MHz D. 600 MHz E. 1000 MHz - Correct Answer-D 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 - Correct Answer-C 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 - Correct Answer-A pg. 21 professoraxel 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 - Correct Answer-A Which of the following is NOT a type of connector for optical fiber? A. LC B. ST C. SFF D. S/FTP E. SC - Correct Answer-D When specifying telecommunications outlet boxes, all of the following should be consideredEXCEPT: A. Outlet box shall be a minimum of 100 mm (4 in) x 100 mm (4 in) x 76 mm (3 in) pg. 22 professoraxel 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. - Correct Answer-D 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) - Correct Answer-D 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) - Correct Answer-C pg. 25 professoraxel 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 - Correct Answer-D 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 - Correct Answer-B The standard floor space coverage area for each building automation system (BAS), is aBAS outlet or device for every_______ of floor space. A. 9.3 m 2 (100 ft 2) pg. 26 professoraxel 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) - Correct Answer-B The standard floor space coverage area for each building automation system (BAS) is aBAS 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) - Correct Answer-B 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 pg. 27 professoraxel 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 - Correct Answer-D 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 - Correct Answer-C 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 pg. 30 professoraxel D. Cannot be used in place of a pull box E. Must be equal in size to the main conduit - Correct Answer- C 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 - Correct Answer-A 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 - Correct Answer-C pg. 31 professoraxel 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) - Correct Answer-C 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 - Correct Answer-D pg. 32 professoraxel Multimode optical fiber is generally used for campus or building applications due to the ability to use cost effective: A. Connectors B. Cable C. Installation methods D. Transceivers E. Designs - Correct Answer-D 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 - Correct Answer-B pg. 35 professoraxel When designing a campus distribution system involving small buildings with only one horizontal cross-connect (HC) [Floor distributor (FD)] per building, you can eliminate the need for a(n): A. Intermediate cross-connect (IC) Building distributor (BD) B. Main cross-connect (MC) Campus distributor (CD) C. Horizontal cross-connect (HC) Floor distributor (FD) D. Entrance facility (EF) E. Latching connector (LC) - Correct Answer-A One advantage of using preconnectorized jumpers and cables is: A. They are less costly than field connectorized connectors B. The cables are more rugged and can handle higher pull tensions C. They come with factory certified quality of terminations D. They require additional engineering time thereby providing a higher degree of reliability E. The technician does not need to be concerned with the water blocking components of the cable - Correct Answer-C pg. 36 professoraxel The maximum vertical rise is the distance over which the cable is vertically self-supporting.This distance is a function of the weight of the cable and the: A. Sheath fire rating B. Number of strands of fiber in the cable C. Type of hangers used in the riser D. Type of fire stop used in the riser E. Cable maximum tensile rating - Correct Answer-E You are given a choice of methods of routing backbone cabling vertically through a building. The one option that you do NOT want to use is: A. Open shafts B. Metallic raceways C. Slots D. Sleeves E. Elevator shafts - Correct Answer-E When designing a fiber backbone using cable with an armored sheath, a major consideration that you must address is: A. Type of metal used in the sheath pg. 37 professoraxel 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 - Correct Answer-D One of the advantages of using optical fiber in the backbone installation is: A. More cost effective B. Immunity to EMI C. Safer to install D. Requires less skill to install E. Has better manufacturer support - Correct Answer-B 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 pg. 40 professoraxel urgency is to meet a service demand. Your first choice of fiber cable installation is to use: 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 - Correct Answer-E When reviewing a backbone distribution system within a building provided to you for standards compliance, you see that there are several cables with bridge taps built in.Which one of the following options is correct? A. Ensure all cables meet maximum lengths to ensure standards compliance B. Ensure all cables exceed minimum cable lengths to avoid NEXT(near-end crosstalk) C. Provide recommendations to remove all bridge taps D. Provide recommendations to remove one bridge tap per cable pg. 41 professoraxel E. Do nothing as the design will pass all design parameters - Correct Answer-C In reviewing your client's network needs for today and 5 years into the future, you note their current specs call for a 1Gb/s network within a campus environment, with little or no possibility of any increased bandwidth demands until they move to their planned future site. The building is not large, and the cable lengths will not exceed 550 m (1804 ft). Your recommendation for the fiber to be installed in the backbone is: A. OM1 fiber B. OM2 fiber C. OM3 fiber D. OM1, OM2, or OM3 will work E. OS1 equipped with attenuators - Correct Answer-B You have been asked to design a backbone cable connecting two large campus buildings.Your pathways will include using conduits, maintenance holes, and one section of 100 m(328 ft) of direct buried optical fiber cable. Your choice of fiber optic cable type recommendation is a: A. Distribution cable pg. 42 professoraxel E. Steel cable ties - Correct Answer-A You are reviewing a building backbone design with a vertically aligned telecommunications room (TR). In the spec you note in a footnote with details that the slots at one end of the telecommunications room (TR) must be flush with the floor and the sleeves provide at the end of the telecommunications room (TR) must also be flush. In your meeting with the electrical engineering firm that has provided the spec, you make the comment that according to best practices, the MINIMUM that slots and sleeves must extend above the finished floor are: A. 25 mm (1 in) for slots and 51 mm (2 in) B. 25 mm (1 in) for slots and 25 mm (1 in) C. 51 mm (2 in) for slots and 25 mm (1 in) D. 51 mm (2 in) for slots and 51 mm (2 in) E. 64 mm (2 1/2 in) for slots and 64 mm (2 1/2 in) - Correct Answer-B The decision regarding the number of optical fibers to install (fiber strand count) in a backbone depends largely on all of the following EXCEPT: A. Level of multiplexing pg. 45 professoraxel B. Intended end-user applications C. Physical topology of the cabling system D. Distance between telecommunications room (TR) E. Cabling system configuration - Correct Answer-D This diagram illustrates a ______________campus backbone design. A. Hierarchical star B. Ring topology C. Bus topology D. Inverted star E. Collapsed ring - Correct Answer-A When designing a connection to an outlying building you decide to choose a physical ring.Your primary reason for considering a physical ring is: A. You have easy access to an existing pathway B. The design is quick and easy to install C. The campus suits this design pg. 46 professoraxel D. The design is cost effective E. The physical ring provides a redundant cable path for disaster recovery - Correct Answer-E The MINIMUM recommended lighting requirement in a telecommunications room (TR) at the point of cable terminations is: A. 150 lux B. 300 lux C. 500 lux D. 750 lux E. 1000 lux - Correct Answer-C In addition to voice and data services, an equipment room (ER) can be designed to include all of the following EXCEPT: A. CATV and CCTV facilities B. Life safety facilities C. Building electrical service monitoring and controls D. Audio and paging equipment E. General premise monitoring and security systems - Correct Answer-C pg. 47 professoraxel connecting to the telecommunications room directly below.Where should the sleeves be placed within the room? A. On the left side of the room at the base of the wall B. On the right side of the room at the base of the wall C. Centered along the base of the wall D. Near the entrance to the room E. Conduit should be extended from the sleeves to 2.4 m (8 ft) AFF - Correct Answer-A At a minimum, convenience receptacles in an ER or TR are to be located ________ AFF. A. 150 mm (6 in) B. 300 mm (12 in) C. 375 mm (15 in) D. 450 mm (18 in) - Correct Answer-A The recommended MINIMUM number of conduits connecting two located on the same floor is: A. One - Correct Answer-A pg. 50 professoraxel You have been selected to do the telecommunications design on a new, single story building. The architect requires the size and location of the telecommunications rooms so their building design can proceed. From the items listed below (all of which are required for the design), which one is the logical starting point in order to provide the architect with a size and location for the room? A. Determine where the entrance facility will be B. Determine the number of , their locations, and telecommunications services needed C. Determine the power, HVAC, electrical, and security requirements for the room D. Determine future growth and other requirements E. Determine the types of equipment to be installed in the room - Correct Answer-B "A single outlet utilizing a dedicated phase, neutral, and ground conductor" is the definition for which of the following? A. Feeder circuit B. Ground fault receptacle C. Dedicated branch circuit D. "Daisy-chained" series of receptacles - Correct Answer-C pg. 51 professoraxel In a telecommunications room (TR), the MINIMUM bottom edge height recommendation for mounting plywood on the wall is ________ above AFF. A. 51 mm (2 in) B. 152 mm (6 in) C. 200 mm (8 in) D. 305 mm (12 in) E. 410 mm (16 in) - Correct Answer-C 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. A. One - Correct Answer-B On a survey of one of your client's buildings, you discover that one of the TRs, housing a considerable quantity of switching equipment, is at 25 degrees C (77 degrees F) with a relative humidity of 59 percent. This is considered to be: A. Within the normal range of temperature and humidity B. High temperature and normal humidity pg. 52 professoraxel A building can have multiple equipment rooms (ERs) for all of the following reasonsEXCEPT: A. To provide redundancy B. For separate tenants C. To house different types of equipment D. To serve multiple Access point (APs) and/or Service provider (SPs) E. To accommodate office and work space - Correct Answer-E In a telecommunication room (TR), the ________ is the facility used to make cross connections from the backbone cable to the horizontal cable. A. Horizontal cross-connect (HC) B. Entrance facility (EF) C. Intermediate cross-connect (IC) D. Main cross-connect (MC) - Correct Answer-A What is the MINIMUM ceiling height of a telecommunications room? A. 2.1 m (7.0 ft) B. 2.3 m (7.5 ft) pg. 55 professoraxel C. 2.4 m (8.0 ft) D. 2.6 m (8.5 ft) E. 2.7 m (9.0 ft) - Correct Answer-C Firestop ________, in conjunction with steel wedging plates, go in a steel cable tray. A. Bag B. Block C. Intumescent sheet D. Silicone foams - Correct Answer-A Which of the following is a nonmechanical firestop system? A. Cable transit system B. Firestop blocks C. Fire rated pathway device D. Factory fabricated sleeve system - Correct Answer-B What type of material does NOT support combustion even under accelerated conditions? A. Fire break B. Fire proof pg. 56 professoraxel C. Fire resistant D. Fire retardant - Correct Answer-B Most types of firestop putty have ________ properties. A. Water based B. Cementitious C. Intumescent D. Silicone based - Correct Answer-C A ________ eliminates the need to remove or install materials. A. Cast-in-place device B. Cable transit system C. Fire-rated pathway device D. Factory fabricated sleeve system - Correct Answer-C You are designing the cabling infrastructure for a lab office building that will frequently change tenants. The owner will be responsible for all of the infrastructure that feeds each floor to include the telecommunication rooms. Which firestop method will best suit the owners needs? pg. 57 professoraxel D. W rating - Correct Answer-B The F rating for a framed wall/stud wall is ________ hour(s). A. One B. Two C. Three D. Four - Correct Answer-B A(n) ________ system is considered a mechanical firestop. A. Cementitious B. Cable transit C. Firestop block D. Intumescent sheet - Correct Answer-B Surge currents due to lightning and other sources MUST be ________ before they penetrate the infrastructure. A. Shorted B. Maximized C. Terminated pg. 60 professoraxel D. Equalized - Correct Answer-D The impedance of the equipment grounding conductor can only be accurately measured with an instrument known as a(n): A. Volt ohm meter B. Power distribution unit C. Exothermic weld connection D. Ground impedance tester E. Amp calculator - Correct Answer-D 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. A. Grounding electrode conductor (GEC) B. Electrical ground bar (EGB) C. Signal reference grid (SRG) D. Telecommunications bonding backbone (TBB) E. Drain wire - Correct Answer-C pg. 61 professoraxel You are designing a telecommunications grounding system for a telecommunications room(TR). The TMGB is located 15 m (50 ft) from the telecommunications rack. What is theMINIMUM AWG of the ground conductor required? A. Two B. Three C. Four D. Six E. Eight - Correct Answer-D The MINIMUM dimensions of the telecommunications main grounding busbar is ________ and variable in length. A. 4 mm (0.16 in) x 80 mm (3.15 in) B. 6.3 mm (0.25 in) x 100 mm (4 in) C. 8 mm (0.31 in) x 110 mm (4.33 in) D. 10.5 mm (0.41 in) x 140 mm (5.51 in) E. 12.75 mm (0.50 in) x 175 mm (6.89 in) - Correct Answer-B Which of the following is NOT provided by the ac grounding electrode system? A. Zero volt reference for AC power pg. 62 professoraxel Which of the following covers lightning protection systems and defines as exposed anything above ground and outside the zone of protection? A. NTSB-12 B. IEEE 1100 C. NFPA 780 D. NEC 47 E. ANSI J/STD-607-A - Correct Answer-C As a guide, the recommended maximum AC current value on any bonding conductor should be less than ________ amperes. A. 0.50 B. 1 C. 5 D. 10 E. 20 - Correct Answer-B Certain systems must exist relative to bonding and grounding at every site. Which of the following is NOT one such system? pg. 65 professoraxel A. AC grounding electrode system (e.g., in some countries it may also be known as the earthing system) B. Telecommunications bonding infrastructure C. Lightning protection system D. Equipment grounding system (e.g., in some countries it may also be known as the equipment bonding system) - Correct Answer-C Which of the following electrical devices is used to convert AC to DC? A. Inverter B. Rectifier C. Transformer D. Line filter - Correct Answer-B You have been asked to provide a UPS that is always serving the load from its batteries and the electrical supply is used only to recharge the batteries. Which one of the following types of UPS will meet this requirement? A. Off line, standby B. Line interactive C. Online double conversion pg. 66 professoraxel D. Rotary E. Flywheel - Correct Answer-C A rapid increase in voltage with a duration of half a cycle best describes a(n): A. Swell B. Overvoltage C. Transient D. Frequency variation - Correct Answer-C An isolated ground is used to: A. Reduce transients B. Prevent interruptions C. Reduce EMI/RFI D. Reduce swells and sags - Correct Answer-C Multiples of the basic frequency of an electrical waveform are called: A. Transients B. Noise inductions C. Harmonics pg. 67 professoraxel A. Isolated grounding B. Oversized neutral and grounding conductors C. Surge protection on power supply D. A 3-phase feeder supply separate from the building supply E. Power filtering at the service panel - Correct Answer-B You have been asked what the estimated power cost will be per month (30 days) for the new equipment room you are designing. The power load you have calculated to be an average of 1850 watts per hour. What is the monthly cost assuming the cost of electricity is7.5 cents (U.S.) per kilowatt hour? A. $44.40 B. $55.50 C. $99.90 D. $122.80 E. $140.10 - Correct Answer-C If you have a circuit with 120 volts, 12 amps, and 10 ohms, it has a peak power of________ watts. A. 1018 B. 1200 pg. 70 professoraxel C. 1440 D. 2037 - Correct Answer-C You have been asked to provide a N+1 level of power redundancy in the new equipment room (ER) being designed with a Tier-II power supply. What should you do? A. Provide a UPS that serves all of the equipment in the facility. B. Provide two separate UPS units with an automatic power failure transfer to serve entire facility. C. Provide two separate UPS units with each one serving half the equipment in the facility. D. Provide two separate UPS systems with one serving the entire facility and the second on automatic power failure transfer to serve critical circuits only. - Correct Answer-B Which of the following refers to the increase in the nominal voltage for a duration of 3600 cycles? A. Swell B. Overvoltage C. Transient D. Sag - Correct Answer-B pg. 71 professoraxel A large telecommunications facility, by most codes, must be designed with an EPO switch located at: A. The facility entrance or exit B. The main power panel C. Between the main power panel and the transformer D. Near each bank of equipment in the telecommunications space - Correct Answer-A For the telecommunications industry, the nominal operating voltage is ________ volts DC. A. + 24 B. - 24 C. + 48 D. - 48 - Correct Answer-D Phase difference is the relationship in time between two waveforms of the same: A. Power B. Voltage pg. 72 professoraxel Which class of the system applies when the premise only has a single equipment room(ER), and it is the only telecommunications space administered? A. Class 1 B. Class 2 C. Class 3 D. Class 4 - Correct Answer-A 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 portsWhat would be the identifier of the two ports on the eighth slot of the new equipment shelf? 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 - Correct Answer-A pg. 75 professoraxel 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. A. 1 B. 2 C. 3 D. 4 - Correct Answer-B Which class of the system was created to secure a single equipment room (ER)? A. Class 1 B. Class 2 C. Class 3 D. Class 4 - Correct Answer-A Color codes for cross-connections fields have been used for many years. Which color is used to identify campus backbone? A. Brown B. Blue C. Green pg. 76 professoraxel D. Purple E. White - Correct Answer-A Which one of the following is part of the security metric to consider in selecting the appropriate labels for an administrative system? A. Tamper resistance B. Smudge resistance C. Temperature rating D. Adhesive type E. Moisture content - Correct Answer-A When labeling pathways, which one of the following guidelines should be met? A. Labeling should be affixed at the ends of each pathway. B. Pathways should not be labeled at regular intervals to avoid labeling removal during cable installation. C. Avoid marking conduits from the main equipment room (ER). D. Pathways do not need to have unique identifiers as they are only supporting cables. pg. 77 professoraxel 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: 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 - Correct Answer-D When balanced twisted-pair copper cabling, return loss is a measurement of the: 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 pg. 80 professoraxel 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 - Correct Answer-B 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? A. Power meter B. Continuity testing C. Level II testing D. Time domain reflectometer (TDR) - Correct Answer-D Which of the following does NOT describe one of the four main types of specifications? A. Based on an established standard B. Focused on exact properties and installation methods C. Calling out brand names and models pg. 81 professoraxel D. Focusing on the desired results E. Listing maximum acceptable performance - Correct Answer- E A scope of work should contain all of the following EXCEPT: A. Request for purchase B. Project schedule C. Project objective D. Assumptions E. Customer needs - Correct Answer-A All of the following are considered market or regional conditions that can impact construction costs EXCEPT: A. Displacement and relocation B. Construction time frame C. Other large projects in the area D. Seasonal effects on construction costs - Correct Answer-A Which is NOT true about conformance quality? A. It focuses on physical quality. B. It involves evaluating customer satisfaction. pg. 82 professoraxel At the end of the second week of a project, the earned value (EV) of work is $8000 USd and the planned value (PV) of work is $7000 USd. What is true about the project? A. The project is ahead of schedule. B. The project is over budget. C. The project is behind schedule. D. The project is under budget. - Correct Answer-A Which area of project management covers the blending of various subteams into a project organization with a cohesive plan? A. Integration management B. Human resources management C. Risk management D. Communications management - Correct Answer-A A work breakdown structure is: A. Influenced by market conditions at the time of the project execution B. A set of accounting codes C. Reflective of project organizational structure pg. 85 professoraxel D. Easily standardized E. A replacement for a Gantt chart - Correct Answer-A What is the PERT estimate of time for cable placement on a given job?- Optimistic time is 100 hours- Most likely time is 125 hours- Pessimistic time is 210 hours A. 100 hours B. 125 hours C. 135 hours D. 155 hours E. 175 hours - Correct Answer-C Which is NOT a type of contract? A. Contractor submits a fixed price for the SOW B. Contractor is reimbursed for actual costs plus a fee C. Unit price is used because the SOW cannot be determined prior to bid D. Mediation panel assigns a fair price based on work completed - Correct Answer-D pg. 86 professoraxel Select the appropriate task to complete section 2.2 of the work breakdown structure (WBS) below:2 Technician2.1 Install cabling2.2 __________2.3 Activate wireless A. Install access point B. Clean work area C. Install pathway for cabling D. Confirm wireless coverage - Correct Answer-A When developing a safety plan, consider all of the following EXCEPT: A. Safety may be excluded from scope where an information technology system (ITS) designer is responsible for the design only B. Areas that should be addressed by the safety plan include emergency numbers and work area protection C. The safety coordinator should hold a safety meeting prior to the start of the project D. The contractor should contact the customer safety coordinator to evaluate site specific emergency procedures - Correct Answer-A pg. 87 professoraxel The headend has several audio-video playback devices within it. What piece of equipment is required to assign their output signals to specific RF carriers on the CATV system? A. Modulator B. Combiner C. Splitter D. Multiport tap - Correct Answer-A 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? A. Video over balanced twisted-pair B. Trunk and tap C. Home run D. Video over optical fiber - Correct Answer-A A building has six floors plus a basement. Each floor is 10,000 square feet and has approximately 50 CATV outlets respectively. There is a single hardline trunk cable installed pg. 90 professoraxel from the basement headend passing through a directional coupler in each floor's telecommunications room (TR). Which leg of the coupler will have the LEAST signal loss? A. Tap B. Through C. Splitter D. Port - Correct Answer-B The headend has several modulators assigning frequencies for distribution to the CATV network. What distribution device should you use immediately at the headend to distribute the modulator's output signals to CATV system? A. Splitter B. Directional coupler C. Combiner D. Multiport tap - Correct Answer-C What is the appropriate impedance of coaxial cable for use with broadband distribution? A. 50 B. 75 C. 100 pg. 91 professoraxel D. 150 - Correct Answer-B A building has six floors plus a basement. Each floor is 929 sq m (10,000 sq ft) and has approximately 50 CATV outlets respectively. There is a single hardline trunk cable installed from the basement headend passing through the telecommunications room (TR) on each floor. In order to maintain the LEAST signal loss passing through each telecommunications room (TR) to the next telecommunications room (TR), what device should you specify for use within each telecommunications room (TR)? A. Splitter B. Directional coupler C. Multiport tap D. Combiner - Correct Answer-B Active video converters are required for what type of CATV distribution system? A. Video over balanced twisted-pair B. Trunk and tap C. Home run D. Video over optical fiber - Correct Answer-A pg. 92 professoraxel B. 3.7 m (12 ft) C. 4.9 m (16 ft) D. 6 m (20 ft) - Correct Answer-A A space has all hard surfaces including architecture and furnishings. The audio programming produced from the distributed sound system has become unintelligible.Which of the following will NOT mitigate the problem? A. Add tapestries to the walls. B. Provide additional speakers at lower output. C. Increase the volume to the existing speakers. D. Reduce the distance of the existing speakers to the listener. - Correct Answer-C What are the three typical voltages used in centrally amplified paging systems? A. 24, 48, and 90 B. 25, 70, and 100 C. 25, 90, and 120 D. 48, 90, and 120 - Correct Answer-B pg. 95 professoraxel Using the sound pressure level (SPL) method of approximating distance and power, calculate the power required to produce 89 dB at 4 m (13.1 ft) with a loud speaker that is rated at a SPL of 95 dB. What input power level (in watts) is required to appropriately power the speaker? A. 1 watt B. 2 watts C. 4 watts D. 8 watts - Correct Answer-C You are designing a paging system for a 588 sq m (6325 sq ft) open office space. Due to architectural features of the ceiling, wall mounted speakers must be used. Following the general rule about wall mounted speaker placement, how many speakers should be installed? A. Eight B. Ten C. Twelve D. Fourteen - Correct Answer-C What is the highest typical ambient noise level where audio paging becomes unintelligible? pg. 96 professoraxel A. 75 dB B. 85 dB C. 95 dB D. 105 dB - Correct Answer-C What element is typically NOT part of a paging system? A. Strobe B. Distribution C. Amplification D. Loudspeakers - Correct Answer-A You are designing a four story retail mall and multiple sound systems within it. Which system should you design to support general music programming within common retail areas? A. Distributed paging B. Life safety C. Sound masking D. Sound reinforcement and playback - Correct Answer-D pg. 97 professoraxel