EMT Practice Test

1. Question Content...

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Question1: Time division multiplexing (TDM) systems are designed to transport ________ between end point systems.

Question2: A third bend is acceptable in a pull section shorter than 33 ft. in length?

Question3: 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?

Question4: If you have a 30 cm (12 in) wide data tray, what does ANSI/TIA 569-B recommend be the maximum pathway fill cross sectional area assuming a MAXIMUM pathway depth of 15 cm (6 in)?

Question5: Phase difference is the relationship in time between two waveforms of the same:

Question6: 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?

Question7: The propagation and path loss of radio signals in the target environment can be sampled using:

Question8: What type of facility requires a building automation system (BAS) device to be located every 5 sq m (50 sq ft)?

Question9: Underground facilities are cables placed in subsurface conduits, using maintenance holes and or pull boxes.

Question10: Exhibit: A pay telephone using coins needs to be installed in a public area. In the specifications, it is required that the telephone shall meet the ADA (American with Disabilities Act) requirement for front reach using a wheelchair. What will be the maximum reachable height or the value of "X"?

Question11: An outside plant (OSP) cable must be placed under a pipeline with two side by side pipe runs. The distance between the outside pipes is 6 m (20 ft). What is the length of the conduit required to facilitate the pipeline crossing?

Question12: The purpose of QoS on an IP network is for:

Question13: A security program consists of three independent components. They are electronic, architectural, and:

Question14: Which of the following is NOT an advantage of access floor systems?

Question15: ITU-T G.655 recommends which type of singlemode optical fiber?

Question16: Within a data center, if you have a system which includes one extra unit, in addition to the minimum required to satisfy the base need, and where the failure of this unit will NOT disrupt operations, what level of redundancy would this represent?

Question17: What is the appropriate impedance of coaxial cable for use with broadband distribution?

Question18: 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?

Question19: For TRs that contain active equipment, what is the minimum temperature and humidity range requirements?

Question20: Multimode optical fiber is generally used for campus or building applications due to the ability to use cost effective:

Question21: What is the MINIMUM vertical separation between the top rail of a railroad track and telecommunications facilities placed beneath the track?

Question22: The ability of a device to withstand electromagnetic disturbances from another device is:

Question23: Which characteristic is an advantage of copper based media over optical fiber cable?

Question24: 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?

Question25: Which of the following is the international standard for premises cabling?

Question26: 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:

Question27: Which of the following is true about screened twisted pair cable assemblies?

Question28: Which of the following correctly lists the lowest frequency band to the highest frequency band?

Question29: You have just assumed management responsibility over an older network consisting of passive hubs and some layer 2 switches. The network is experiencing massive slow downs on an irregular basis. Which of the following is the MOST effective immediate solution to the problem?

Question30: FOTP is an acronym for which of the following?

Question31: Which of the following is an alarm management output system?

Question32: Which device supplies the radio signal into a DAS (distributive antenna system)?

Question33: Centralized fiber cabling allows the use of pull-through cables, an interconnect, or splices in the TR.

Question34: An isolated ground receptacle may be identified by:

Question35: Exhibit: In this future marina layout, assuming that there are fewer than 10 slips being cabled, what would be the pre-cabling guideline to follow for terminal A?

Question36: Which of the following is the Canadian standard for the Design Guidelines for Administration for telecommunications in Commercial Buildings.

Question37: Multiple TRs on the same floor should have a least one trade size 3 conduit ran between them.

Question38: 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?

Question39: 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:

Question40: 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?

Question41: The inadvertent transposition of two conductors of separate pairs is called what?

Question42: What is the minimum bend radius of an indoor backbone fiber optic cable when under a no load condition?

Question43: Exhibit:

In this future marina layout, what would be the pre-cabling guideline to follow for the terminal A?

Question44: Which of the following is NOT provided by the ac grounding electrode system?

Question45: You are designing multi band UHF police radio and VHF fire radio systems for a municipal office. Because of the closeness of the transmit and receive frequencies, you must ensure there is adequate filtering and gain control of the systems. Which device will best meet the ability to separate and control the transmit and receive signals?

Question46: 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?

Question47: 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.

Question48: Data representation including code translations, compressions, and encryptions is performed by what layer of the OSI model?

Question49: You are placing an entrance cable between two buildings connected by a conduit 205.3 m (588 ft) in length. What would be the MAXIMUM length of unlisted OSP cable that could be used before you terminate the cable or transition it to a listed cable?

Question50: You are designing a nurse call system for an assisted care facility. What type of nurse call system would best suit the needs for the facility?

Question51: Which of the following is NOT considered acceptable in an information technology system (ITS) conduit design and installation?

Question52: Which is an advantage of stranded conductors over solid conductors?

Question53: Which is NOT true about conformance quality?

Question54: What would be the pair color of pins 3 and 6 of a T568B 8 pin modular jack?

Question55: When designing an underfloor duct system, which of the following would be the cross-sectional area of the duct serving each 100 square feet of floor space with 3 cables to each of the work areas.

Question56: In a home run conduit system, a single horizontal cable can serve up to three outlet boxes.

Question57: To encroach on navigable waterways contact which of the following?

Question58: Important considerations when designing telecommunications distribution within modular furniture include all of the following EXCEPT:

Question59: What is the permitted substitutes for a fiber optic cable rated OFNP?

Question60: Which of the following statements best describes what a backbone distribution system typically provides?

Question61: The loop distance range in an "ethernet in the first mile" (EFM) design is:

Question62: This type of cable is an unbalanced system:

Question63: The ability of a device, equipment, or system to perform without degradation in the presence of an electromagnetic disturbance is called what?

Question64: An underfloor preset insert must be used in a post-tensioned pour.

Question65: What is the expected life cycle, in years, of building automation system within a building structure with a life cycle of 40+ years?

Question66: 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?

Question67: The RECOMMENDED balanced twisted-pair cable for building backbone cabling consists of ________ round solid copper conductors with a nominal characteristic of 100 ohm.

Question68: Arial suspension strands and cable should usually be placed on the road side of the pole line.

Question69: In a computer or control room where the plenum is used for heating, ventilating, and air-conditioning, the finished floor height should be a minimum of how many inches?

Question70: A(n) ________ system is considered a mechanical firestop.

Question71: When labeling pathways, which one of the following guidelines should be met?

Question72: Aerial fiber optic cable spans of less than 328 feet can be routinely engineered when a dedicated support strand is used.

Question73: When installing a heavy backbone cabling vertically, recommended methods of securing the cable include all of the following EXCEPT:

Question74: A telephone facility and an electrical facility are required in a tunnel. To reduce the effects of EMI and eliminate the need for additional shielding of the cables, where would each facility be placed?

Question75: From a 1000 ft (305 m) roll of optical fiber, how many MAXIMUM length centralized optical fiber cabling runs can be made?

Question76: Which of the following should be used as a guideline for estimating space requirements of optical fiber and coaxial cable cross-connections in a TR?

Question77: You have determined that your underground cable design requires three maintenance holes (MHs). One is 4.3 m (14 ft), one is 6 m (20 ft), and one is 6.7 m (22 ft) in length. How many MH covers are required to serve these MHs?

Question78: Which one of the following is part of the security metric to consider in selecting the appropriate labels for an administrative system?

Question79: In order to maximize its ability to send and receive, an antenna should be ________ to the desired frequency.

Question80: You are designing a system requiring the transmission of data. Your system must perform higher than ________ kHz in order to do so.

Question81: The MINIMUM finished height of access flooring in a general office area is:

Question82: 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:

Question83: Generating multiple message frames containing identical data being transferred to different individual devices is called:

Question84: 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:

Question85: An offset in a conduit run should be considered the equivalent of a 90 degree bend.

Question86: Multiples of the basic frequency of an electrical waveform are called:

Question87: When balanced twisted-pair copper cabling, return loss is a measurement of the:

Question88: Which active DAS component is responsible for coupling input signals from donor systems?

Question89: What element is typically NOT part of a paging system?

Question90: You are designing an audible alarm notification system for an office environment with an ambient noise level of 55 dBA. What dBA level should the horn be set at?

Question91: Firestop ________, in conjunction with steel wedging plates, go in a steel cable tray.

Question92: You are working with the Sheriff's Department to develop a public safety wireless network that will be secured from interference and have the capability of delivering up 10 Mbps subscriber speed. What microwave frequency should be used to best meet these needs?

Question93: Horizontal slack in the form of bundled loops have been known to degrade cabling performance.

Question94: Exhibit:

This diagram illustrates a ______________campus backbone design.

Question95: Premises optical fiber links should be tested:

Question96: What is the typical slab thickness requirement for a two level underfloor duct system where feeder and distribution ducts intersect?

Question97: What warning tape color has the Common Ground Alliance (CGA) adopted for telecommunications and CATV cables?

Question98: 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?

Question99: You have been asked to spec the physical security requirements related to the protection of assets for a new data center. The most common potential for damage categories you have considered include temperature, gases, organisms and projectiles. The one category that you have missed is:

Question100: When selecting poles for aerial telecommunications facilities, which of the following is the class number for the strongest rated pole?

Question101: A tapped trunk topology uses ________ cabling to support a DAS.

Question102: You are designing a cabling containment system installed overhead in a new data center. The main or prime purpose of the system will be to manage fiber optic cabling between cabinets. You have a choice of designs of the containment system. In view of the prime purpose of containment system, your first choice of design will be one that:

Question103: What is at the "root" of a DAS (distributive antenna system)?

Question104: All of the following are true about the post construction phase EXCEPT:

Question105: The American Public Works Association has adopted the color blue for warning tape used to minimize any chance of accidental dig-up of telecommunications and CATV cables.

Question106: What type of redundancy provides two additional units, modules, paths, or systems in addition to the MINIMUM required to satisfy the base requirement.

Question107: Between the late 60's and until 1984, what was the service that was to help architects and engineers better design and implement pathways and spaces in commercial buildings for telephone communications?

Question108: All of the following are nominal wavelengths for laser light sources EXCEPT:

Question109: 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.

Question110: Vertical conduit masts (with approved service heads) are limited to drop-wire attachments of up to ________ lines.

Question111: A product is listed after it successfully completes a series of which of the following test?

Question112: 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?

Question113: A campus backbone design linking two buildings requires that you install a high-fiber-count cable very quickly, using the conduit system provided. Cost is not so much an issue as urgency is to meet a service demand. Your first choice of fiber cable installation is to use:

Question114: Designing an intrabuilding backbone involves the same options and decision of a interbuilding backbone.

Question115: Surge currents due to lightning and other sources MUST be ________ before they penetrate the infrastructure.

Question116: What is the standard floor space allocation used in an office environment for one individual work area?

Question117: A backbone star topology shall have no more than______ level(s) of cross-connections.

Question118: You are designing a 4.9 GHz microwave system that is using rectangular waveguide from the transceiver to the inside wall of the shelter and an antenna using elliptical waveguide from the antenna to the outside wall of the shelter. The antenna has been designed to be placed 200 ft up on a 250 ft tower. What device will you specify that will best interconnect the two different waveguides?

Question119: The standard floor space coverage area for each building automation system (BAS) is a BAS outlet or device for every ________ of floor space.

Question120: For an analog camera, what is the normal frame rate in frames per second?

Question121: In an industry where a high level of humidity is measured, which type of label should be used?

Question122: What type of estimate is based on the cost of performing similar work in the past, adjusted for current job conditions?

Question123: What is the MAXIMUM horizontal cable length permitted for centralized optical fiber cabling from the MDA within a data center?

Question124: What is the maximum pulling force guideline for a 2 or 4 strand fiber cable?

Question125: Using Ohms law, a circuit of 120 volts and a resistance of 15 ohms will have a current of ________ amps.

Question126: The MINIMUM recommended lighting requirement in a telecommunications room (TR) at the point of cable terminations is:

Question127: What type of material does NOT support combustion even under accelerated conditions?

Question128: Manholes between 12 and 20 feet long use two covers.

Question129: When trying to control radio signals from leaking outside of a building, a ______________ antenna should be used.

Question130: 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
2.5 Test fiber

Question131: 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:

Question132: Perimeter raceway systems should be used primarily for:

Question133: The concept of the "security quandary" is based on providing a balancing act between what two elements?