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RCDD Test (Topic 8 - Topic 14) Questions With 100% Correct Answers | Verified|Updated 2024, Exams of Advanced Education

RCDD Test (Topic 8 - Topic 14) Questions With 100% Correct Answers | Verified | Updated 2024 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. Bag Which of the following is a nonmechanical firestop system? A. Cable transit system B. Firestop blocks C. Fire rated pathway device

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Download RCDD Test (Topic 8 - Topic 14) Questions With 100% Correct Answers | Verified|Updated 2024 and more Exams Advanced Education in PDF only on Docsity! RCDD Test (Topic 8 - Topic 14) Questions With 100% Correct Answers | Verified | Updated 2024 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. Bag 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. Firestop blocks pg. 1 professoraxel What type of material does NOT support combustion even under accelerated conditions? A. Fire break B. Fire proof C. Fire resistant D. Fire retardant - Correct Answer-B. Fire proof Most types of firestop putty have ________ properties. A. Water based B. Cementitious C. Intumescent D. Silicone based - Correct Answer-C. Intumescent A ________ eliminates the need to remove or install materials. A. Cast-in-place device B. Cable transit system C. Fire-rated pathway device pg. 2 professoraxel A. F rating B. L rating C. T rating D. W rating - Correct Answer-D. W rating You are designing a firestop system for a hospital with several floors that have isolation rooms. Air leakage control is important to ensure rooms are sealed and restrict the spread of disease. Which firestop test rating should you use to ensure air leakage compliance? A. F rating B. L rating C. T rating D. W rating - Correct Answer-B. L rating The F rating for a framed wall/stud wall is ________ hour(s). A. One B. Two C. Three pg. 5 professoraxel D. Four - Correct Answer-B. Two A(n) ________ system is considered a mechanical firestop. A. Cementitious - B. Cable transit - C. Firestop block - D. Intumescent sheet - - Correct Answer-B. Cable transit - As a guide, the MAXIMUM recommended DC current value on any bonded conductor should be less than: A. 250 milliamps B. 500 milliamps C. 750 milliamps D. 1 amp E. 1.25 amps - Correct Answer-B. 500 milliamps Surge currents due to lightning and other sources MUST be ________ before they penetrate the infrastructure. pg. 6 professoraxel A. Shorted B. Maximized C. Terminated D. Equalized - Correct Answer-D. Equalized 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. Ground impedance tester 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. pg. 7 professoraxel C. 1 D. 2 E. 5 - Correct Answer-A. 0.1 Based on documentation contained within the Insulated Cable Engineers Association(ICEA) standard P32-382, Short Circuit Characteristics of Insulated Cable, a copper conductor is capable of safely carrying one ampere for ________ second(s) for every 42.25 circular mils. A. One B. Five C. Twelve D. Twenty E. Thirty - Correct Answer-B. Five Electrical power cables are usually routed above aerial cable in order to: A. Provide aesthetics, as the power cables are bigger than the aerial cables pg. 10 professoraxel B. Be a strength member in case a tree or something heavy falls on the lines C. Negate the need for protectors D. Intercept and divert direct power strikes - Correct Answer- D. Intercept and divert direct power strikes An isolated ground receptacle may be identified by: A. Beige coloring with an orange triangle on the face B. The letters IG C. Continuous orange coloring D. Its proximity to the PDU E. Either A or C - Correct Answer-E. Either A or C 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 pg. 11 professoraxel D. NEC 47 E. ANSI J/STD-607-A - Correct Answer-C. NFPA 780 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. 1 Certain systems must exist relative to bonding and grounding at every site. Which of the following is NOT one such system? 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 - pg. 12 professoraxel C. Harmonics D. Random frequency variations - Correct Answer-C. Harmonics The formula for calculating BTUs from electrical power is: A. W x 0.707 B. W x 1.732 C. W x 3.1416 D. W x 3.413 - Correct Answer-D. W x 3.413 All of the following are used to control static discharge EXCEPT: A. Ion generator B. Discharge plates and bracelets C. Maintenance of humidity of between 30 and 55 percent D. Installation of isolated grounds - Correct Answer-D. Installation of isolated grounds pg. 15 professoraxel The average power consumption in a telecommunications room (TR) is 2260 watts per hour. What is the heat dissipation in BTUs? A. 7096 BTU B. 7713 BTU C. 8104 BTU D. 8511 BTU - Correct Answer-B. 7713 BTU Using Ohms law, a circuit of 120 volts and a resistance of 15 ohms will have a current of________ amps. A. 5 B. 8 C. 10 D. 12 E. 15 - Correct Answer-B. 8 DC loads are generally expressed in: A. Amperes pg. 16 professoraxel B. Volts C. Voltage amperes (VA) D. Watts - Correct Answer-A. Amperes You are designing a large equipment room (ER) that will house many servers, switches, backup storage drives, and other communications equipment including peripheral devices. To prevent problems from harmonic currents that can be created by switching power supplies, you should arrange for: 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. Oversized neutral and grounding conductors 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? pg. 17 professoraxel 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. The facility entrance or exit For the telecommunications industry, the nominal operating voltage is ________ volts DC. A. + 24 B. - 24 C. + 48 D. - 48 - Correct Answer-D. - 48 Phase difference is the relationship in time between two waveforms of the same: A. Power - B. Voltage - C. Frequency - D. Current - - Correct Answer-C. Frequency - pg. 20 professoraxel In an industry where a high level of humidity is measured, which type of label should be used? A. Moisture-induced decay and degradation resistant B. Ultraviolet (UV) light protected C. Heat and cold resistant D. Smudge resistant E. Chemical resistant - Correct Answer-A. Moisture-induced decay and degradation resistant Color codes for cross-connections fields have been used for many years. Which color is used to identify horizontal cable? A. Blue B. Green C. Purple D. Orange E. Brown - Correct Answer-A. Blue pg. 21 professoraxel Color codes for cross-connection fields have been used for many years. Which color is used to identify network connections? A. Green B. Orange C. Purple D. Yellow E. Brown - Correct Answer-A. Green If a telecommunications grounding busbar is installed in the telecommunications room (TR) with the identifier of 310, located on the third floor, then the telecommunications grounding busbar should be labeled as: A. TGB-310 B. TGB C. TGB in TR 310 D. TGB in room 310 E. No need to identify as there is only one per TR - Correct Answer-A. TGB-310 pg. 22 professoraxel C. Class 3 D. Class 4 - Correct Answer-A. Class 1 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 D. Purple E. White - Correct Answer-A. Brown 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. Tamper resistance pg. 25 professoraxel 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. E. Only pathways containing fire/life/safety systems and electrical system should be labeled to prevent interference with other applications. - Correct Answer-A. Labeling should be affixed at the ends of each pathway. What is the worst case acceptance value for attenuation when testing 2000 m (6562 ft) of50/125 multimode fiber at a wavelength of 1300 nm when the fiber has 2 connector pairs and 3 splices? A. 3.4 dB B. 4.65 dB pg. 26 professoraxel C. 5.4 dB D. 6.4 dB E. 9.4 dB - Correct Answer-C. 5.4 dB You are preparing to test newly installed open office cabling. Within the open office cabling, there are multiple consolidation points (CP) that were installed while waiting for furniture. How do you proceed with permanent link testing? A. Test to each CP, then test from CP to workstation. B. Wait for open office cabling to be completed, then test to each workstation outlet, including the CP. C. Test that the CP is within 90 meters, then test again to the workstation outlet. D. Perform permanent link tests to each CP, then continuity tests from CP to each workstation outlet. E. Test to each workstation outlet, treating each outlet as a channel. - Correct Answer-B. Wait for open office cabling to be completed, then test to each workstation outlet, including the CP. Premises optical fiber links should be tested: pg. 27 professoraxel B. Continuity testing - C. Level II testing - D. Time domain reflectometer (TDR) - Correct Answer-D. Time domain reflectometer (TDR) 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 D. Focusing on the desired results E. Listing maximum acceptable performance - Correct Answer- E. Listing maximum acceptable performance A scope of work should contain all of the following EXCEPT: A. Request for purchase B. Project schedule C. Project objective D. Assumptions pg. 30 professoraxel E. Customer needs - Correct Answer-A. Request for purchase 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. Displacement and relocation Which is NOT true about conformance quality? A. It focuses on physical quality. B. It involves evaluating customer satisfaction. C. It requires work force training. D. It includes inspections of work. E. It follows the principle of plan, do, check, and act. - Correct Answer-B. It involves evaluating customer satisfaction. pg. 31 professoraxel At the end of the third week of a project, the actual cost of work performed is $7000 USd and the budgeted cost of work performed is $8000 USd. Which of the following is true? A. The project is under budget. B. The project is budget incorrect. C. The project has been back-end loaded. D. The project is over budget. - Correct Answer-A. The project is under budget. What type of estimate is based on the cost of performing similar work in the past, adjusted for current job conditions? A. Analogous B. Parametric C. Engineering D. Ledger E. PERT - Correct Answer-A. Analogous 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? pg. 32 professoraxel 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. Mediation panel assigns a fair price based on work completed Select the appropriate task to complete section 2.2 of the work breakdown structure (WBS) below: 2 Technician 2.1 Install cabling 2.2 __________ 2.3 Activate wireless A. Install access point B. Clean work area C. Install pathway for cabling D. Confirm wireless coverage - Correct Answer-A. Install access point When developing a safety plan, consider all of the following EXCEPT: pg. 35 professoraxel 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. Safety may be excluded from scope where an information technology system (ITS) designer is responsible for the design only Select the appropriate task to complete the section 2.2 of the work breakdown structure below: 2. Technician 2.1 Install rack 2.2 _________ 2.3 Place fiber 2.4 Terminate fiber pg. 36 professoraxel 2.5 Test fiber A. Prepare as-built drawings B. Install connector housing C. Clean/polish connectors D. Specify fiber - Correct Answer-B. Install connector housing All of the following are true about the post construction phase EXCEPT: A. The owner is responsible to update the record copy drawings to reflect "as-built" documents. B. The contractors are resolving issues identified on the punch lists. C. The architect is involved in final acceptance and contract closeout activities. D. The construction manager is coordinating removal of construction equipment and job trailers. - Correct Answer-A. The owner is responsible to update the record copy drawings to reflect "as-built" documents. What is the PERT estimate (in hours) for project design where: pg. 37 professoraxel D. Video over optical fiber - Correct Answer-A. Video over balanced twisted-pair 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 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. Through 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 pg. 40 professoraxel C. Combiner D. Multiport tap - Correct Answer-C. Combiner What is the appropriate impedance of coaxial cable for use with broadband distribution? A. 50 B. 75 C. 100 D. 150 - Correct Answer-B. 75 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 pg. 41 professoraxel B. Directional coupler C. Multiport tap D. Combiner - Correct Answer-B. Directional coupler 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. Video over balanced twisted-pair A building has a series of CATV outlets each with cables installed back to a telecommunications room (TR), and each telecommunications room (TR) is connected to the headend. What is this type of topology called? A. Star B. Mesh C. Bus pg. 42 professoraxel