Parley 0.9.2 Scott Aldinger scott.aldinger@gmail.com GPLv2+ (GNU General Public License version 2 or later) 2009-02-27 Test Preparation American English en_US English en Most common topology for LANs (Local Area Networks) Star The 3dB rule states when attenuation is below 3dB crosstalk and return loss failures will occur due to the far end connector adding to the near end measurements. Equipment racks must be installed at a minimum distance of ____ from electrical equipment. 36" When installing Cat. 5 what is the "one-arm" rule Tension on the cable should not exceed the weight of one arm. What type of cable uses SC and ST connectors Fiber On blueprints what does AFF stand for Above finished floor The type of noise used to adjust acoustics Pink The typical AWG size for conductors in CatV cable. 24-22 IDC (Insulation Displacement Connectors) are used for Insulated Cables (I am told they expect the answer UTP (Unshielded Twisted Pair)) The proper course of action after discovering possible hazardous material is Leave the area, and notify your supervisor What type of termination device uses bridge clips 66 block What is a "fail secure" or failsafe? a device or feature which, in the event of failure, responds in a way that will cause no harm or at least a minimum of harm to other devices or danger to personnel. A series circuit has how many paths? One What type of cable is commonly used for CCTV (Closed Circuit Television) systems? RG-59 or RG-6 What is the XLR type connector pin out? What is the XLR type connector pin out? - Pin 1: Ground; Pin 2: Normal polarity (hot or positive); Pin 3: Inverted polarity (cold or negative) - In common communications cable the blue-white pair is considered as? Tip and ring Extension ladders must extend beyond the top support by ___ inches 36" How many conductors are needed in a balanced microphone connection? 2 Optical Fiber is cover under which article of the NEC 770 What type of optical fiber is used for long distances Singlemode Speaker systems that operate at 70 volts and distribute audio at higher voltages, use what to step down the voltage at each speaker? Transformer Exterior doors belong to which zone of a burglar alarm? Perimeter Diodes with high resistance in each direction is indicative of what? Defective Flammable liquids could accidentally be ignited by? Burning cigarettes, sparks from tools, and Cutting torches. EOL in security systems should be mounted where? On the last device across both wires. The main cause of eye related injuries on the job are from? Flying particles or objects Time-lapse VCRs require what during an alarm condition? Alarm contact closure. (Reworded, but kept same bad phrasing!) What are the primary tip colors? White, red, black, yellow, violet How do you measure resistance in a sound system? Impedance bridge What does the ".1" stand for in a Dolby 5.1 surround sound system? Limited bandwidth channel What class of transformer is used when powering CCTV equipment with a 24-volt source? Class 1 Typically equalizers are installed where in an audio system? Before the power amplifier The diaphragm of a high frequency driver is what shape? Domed What does the format size determine in a camera? Resolution, focal length, and size What should be considered when installing a pan/tilt camera Horizontal and vertical clearance, wind loading The segment of a circuit between the load side of an over-current device or power limited supply and any connected device is the definition of what? Class 1 circuit Safety on the job site can be increase by? Awareness In order for a sound masking system to be affective it must be what? Tuned Distributed sound systems are typically used as? Intercoms, room stereo systems, and background music Block diagrams represent equipment in a? Logical structure What is the minimum conduit size for connecting telecommunications closets on the same floor? 3" Chapter 8 of the NEC covers what topic? Communications systems Decreased resistance in a circuit will cause? An increase in current (I=E/R) Current flows in DC circuits travel in how many directions? One Batteries connected in parallel increase their what? Amp-hour capacities If voltage decreases, then current will? Decrease (I=E/R) A TDR fails it's test on NEXT, PSNEXT, PSELFEXT, and Return loss. What is the most likely cause? The proper twist was not maintained at the connection points. Job sites that are dirty are known as? A dangerous job site How many amps in a 100mA? 0.1 ANSI approved eye protection is given what code number? Z87.1 NEC grounding and bonding specifications can be found under what article? 250 What part of the optical cable does light travel through The Core DTMF stands for what? Dual tone multi frequency MTFB stands for what? Mean time between failures. The secondary or ring colors are? Blue, Orange, Green, Brown, Slate, Rose, Aqua When running cables through areas designated as "return air" what type of cable should be used? Plenum How many connectors are needed for a composite RCA with stereo speakers, and 2 BNC connectors? 5 An equipment rack must be at least __ inches from an electrical panel. 36" What is a CRT? Cathode Ray Tube. A type of display or monitor. What type of cable is typically installed on a 110 block? Category 3, four pair. How much slack is required at the station end for optical fiber? 3' While pulling coax cable, what is the maximum bend radius? 20x the diameter of the cable. Balanced screen twisted pair cable is abbreviated to what? ScTP True or False, STP is the most common cable in use? False, UTP is the most common. "SPL" stands for? Sound pressure level Cable Binders hold how many pairs? 25 ANSI Z89.1 is in regards to? Hard hats The general formula for electric power is? P=IxE True or False, Stickers are OK to put on your hard hat? False What is the measure of opposition to AC current called? Impedance What is the normal service life of a hard hat 5 years The NEC is what part of the NFPA? 70 Non power limited circuits have a maximum allowed voltage of? 600V Bridge clips are used on what type of termination blocks? 66 what is a BIOS? Basic Input Output System, see http://en.wikipedia.org/wiki/BIOS for more information. MTBF stands for what? Mean Time Between Failures In ladder safety what is the "belt buckle" rule? One should not extend their belt buckle past the side rails of the ladder. Article 250 in the NEC refers to what? Grounding and Bonding Door contacts in alarm systems are normally? Closed An "impedance bridge" is used to do what in sound systems? Measure resistance NFPA stands for what organization? National Fire Protection Association Four pair UTP has a maximum pull tension of? 11N (25 lb. ft.) Maximum distance for horizontal cabling in meters? 90m What is the percentage of empty ports that should be left on a patch panel for growth? 10% The lowest maximum allowable pulling tension for fiber optic cable? 50lbs Security VCRs need what to activate during an alarm condition? Alarm contact closure Are equalizers normally placed before or after the amplifier? Before The class of transformers used to power appliances is? A Class II or double insulated electrical appliance is one which has been designed in such a way that it does not require a safety connection to electrical earth (US: ground). The basic requirement is that no single failure can result in dangerous voltage becoming exposed so that it might cause an electric shock and that this is achieved without relying on an earthed metal casing. This is usually achieved at least in part by having two layers of insulating material surrounding live parts or by using reinforced insulation. -- wikipedia Flying objects and particles are the cause of what type of injury? Eye True or False, sub-woofers tend to operate below 300hz True True or False, placing a diode across the relay coil is the best way to protect against voltage spikes in a DC circuit. True. The main reason given for the creation of networks Sharing of resources True or False, ANSI and NEMA are two organizations that establish national standards? True What is the USOC wiring schematic used for? Voice What are the secondary or ring colors? Blue, Orange, Green, Brown, Slate What is a preamplifier used for? To prepare an electronic signal for further amplification or processing. UTP cables are susceptible to what kind of noise? Electrical Broadband communications standards are defined by who? IEEE What is Dual Tone Multi Frequency signaling used for? telephone signalling over the line in the voice-frequency band to the call switching center. The version of DTMF used for telephone tone dialling is known by the trademarked term Touch-Tone (canceled March 13, 1984), and is standardized by ITU-T Recommendation Q.23. --Wikipedia.org The telephone signaling over the line in the voice-frequency band to the call switching center is known as what? Dual Tone Multi Frequency (DTMF). it is used for telephone tone dialling. It is known by the trademarked term Touch-Tone (canceled March 13, 1984), and is standardized by ITU-T Recommendation Q.23. --Wikipedia.org True or False, OFCP, OFCR, and OFN can be installed in cable trays. True The basic output of a computer mouse maps to what keys on the keyboard? The enter key, and arrow keys. What test must you pass before using a respirator? Pulmonary function test How often should you clean fiber optic connectors? After every exposure to the environment. Local alarm systems are typically designed to detect? Intruders True or False, Local power, Ghost power, and Phantom power all refer to the same application of powering a microphone? True. The diaphragm of a high frequency driver is what shape? Domed Bypassing the operator or PBX by dialing an extension is known as what? Direct Inward Dialling (DID), also called Direct Dial-In (DDI) in Europe, is a feature offered by telephone companies for use with their customers' PBX systems, whereby the telephone company (telco) allocates a range of numbers all connected to their customer's PBX. As calls are presented to the PBX, the number that the caller dialled is also given, so the PBX can route the call to the desired person or bureau within the organization. --Wikipedia.org What is the recommended minimum distance of separation between UTP and and lighting? 12" MUTOA stands for what? Multi User Telecommunications Outlet Assembly. What is the AWG size of the center conductor for RG6 coax cable? 18 AWG What is a Wiegand interface? The Wiegand interface is a de facto wiring standard which arose from the popularity of Wiegand effect card readers in the 1980s. It is commonly used to connect a card swipe mechanism to the rest of an electronic entry system. The sensor in such a system is often a Wiegand wire based on the Wiegand effect discovered by John R. Wiegand. A Wiegand-compatible reader is normally connected to a Wiegand-compatible security panel. --Wikipedia.org What is the first step when certifying a data or channel link? Calibrate the testers When penetrating a fire rated wall, what is required to re-meet the the fire rating? Requirements are specific to that wall. What is "Pink noise" used for? Acoustically adjusting a room. Bridge clips are used on what kind of block? 66 block A typical RJ-11 has termination points for how many lines? Two The orange-white pair is typically used for? Tip and ring. In AC circuits what is the measurement of resistance? Impedance What is the general formula for electrical power? P=IxE True or False, Category 5 cables typically have a lower attenuation then Category 3 True What is the voltage over a phone when not ringing? 48VDC The cathode end of a diode is typically marked with a? Band Loose tube fiber optic cable normally requires a? Break out kit, or fan out kit. True or False, pan/tilt platforms can be mounted on the ceiling, below the ceiling, and on brackets True Multiplexing accomplishes what? Combines multiple analog message signals or digital data streams into one signal over a shared medium. Is a camera, lens, cable, and monitor all parts of a CCTV system? Yes True or False, Face structure, facial hair and glasses can all effect the fit of a respirator? True What is the max voltage for coax cable? 60V Define Near End Crosstalk Interference between two pairs of a cable measured at the same end of the cable as the transmitter --wikipedia.org What is a transceiver? A transceiver is a device that has both a transmitter and a receiver which are combined and share common circuitry or a single housing. If no circuitry is common between transmit and receive functions, the device is a transmitter-receiver. The term originated in the early 1920s. Technically, transceivers must combine a significant amount of the transmitter and receiver handling circuitry. --Wikipedia.org True or False, OFCR, OFN, and OFCP can all be installed in cable trays? True Metal cable trays, and wire ways should all be bonded to? Ground On the Job eye related injuries are mostly caused by? Particles or other flying objects. How many directions does data travel in when using full-duplex? 2 LED's emit both visible and? infra-red light. A 24 volt transformer would most likely be of which class? Class 2 Resistance is measured in what type of unit? Ohm True or False, Detection, management, and Action devices are all use to automate electrical systems? True Anti-passbacks are normally found in what type of system? Access systems. True or false, You should always be facing a ladder when ascending or descending True Single section ladders have a recommended maximum length of what? 30' Whats the best way to protect against voltage spike in DC circuits? Place a diode across the relay coil. What type of equipment combines multiple signals, allows for signal control, and has input selection? Mixers Loudspeakers the operate below 300hz are called what? Subwoofers What is the nominal, and ringing voltage for telephones in the North America? 48V/90V What is a block diagram? Functional Flow Block Diagrams (FFBD) usually define the detailed, step-by-step operational and support sequences for systems, but they are also used effectively to define processes in developing and producing systems. --Wikipedia.org How should tools and materials be transferred between you and your coworkers while on a scaffolding? They should be passed carefully to each other. Convert 142mA to amps 0.142 amps What is a circular mil? A circular mil is a unit for referring to the area of the cross section of a wire or cable with a circular cross section, as the area in circular mils can be calculated without reference to pi. --Wikipedia.org Article 250 of the NEC refers to what? Grounding and Bonding Electrical shock-related injuries are most commonly? Burns What is NVP? Nominal Velocity of Propagation. The speed at which a signal moves through a cable, expressed as a percentage or fraction of the speed of light in a vacuum. Cable certification tests measure what two types of delay? Propagation delay (NVP) and delay skew True or False, Batteries connect in series have a voltage equal to the difference of their individual voltages. False. Define electrical current Electric current is the flow of electric charge. The electric charge may be either electrons or ions. The SI unit of electric current intensity is the ampere. -- Wikipedia.org True or False, Both AC and DC voltage can be measured by a solenoid type voltage tester? True What article of the NEC covers signaling circuits True or False, Unless specifically referenced chapter 8 of the NEC is exempt from the other chapters. True The Telephone was invented in what year? I believe their looking for 1876 for the infamous call made by Mr. Bell. But in 1844 Innocenzo Manzetti first came up with the idea. The max length for a patch cord. 16' What does the NEC 110.26 cover? Working clearances for electrical power. True or False, Two types of EMT couplers are Compression and setscrew. True C-2, C-4, and C-5s are used on what kind of block? 110 block What is the best way to control excessive bleeding? Apply direct pressure. Test 1 true Test 2 true Test 3 true Noun noun Male noun/male Female noun/female Neutral noun/neutral Verb verb Adjective adjective Adverb adverb