BICSI Installer 1Exam with Complete Solutions

25-pair color code - ANSWER-White - Blue, orange, green, brown, slate Red - Blue, orange, green, brown, slate Black - Blue, orange, green, brown, slate Yellow - Blue, orange, green, brown, slate Violet - Blue, orange, green, brown, slate Fiber color code - ANSWER-Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua NVP - ANSWER-Nominal Velocity of Propagation Insertion loss - ANSWER-The difference in the amount of power received before and after something is inserted into the circuit. Resistance - ANSWER-Resistance is expressed in Ohms, and is the property of a conductor to resist the flow of electricity through it. V=IR Inductance - ANSWER-Is a property of an electromagnetic field built around a conductor that opposes any change in the current flow in a circuit Capacitance - ANSWER-is a property of conductors that allows storage of electric charges when potential differences exist between the conductors. Impedance (V) - ANSWER-Total opposition of current flow measured in Ohms American Wire Gauge (AWG) - ANSWER-A standard rating that indicates the diameter of a wire, such as the conducting core of a coaxial cable or the twisted pairs in a UTP cable. Megahertz (MHz) - ANSWER-one million hertz, especially as a measure of the frequency of transmissions Megabit (Mb) - ANSWER-Approximately one million bits. Often used as a measurement of data transfer throughput. Bandwidth - ANSWER-The amount of data that can be transmitted over a network in a given amount of time. Decibel (dB) - ANSWER-A unit used to compare the loudness of different sounds. Crosstalk - ANSWER-when data bleeds from one pair to another in a cable Alien Crosstalk (AXT) - ANSWER-Unwanted signal coupling from one permanent link to another USOC - ANSWER-Universal Service Order Code Coaxial cable types - ANSWER-Series-6 and Series-11 Coaxial connectors - ANSWER-Series-6 uses BNC and F connectors Series-11 uses F and N connectors Fiber connectors - ANSWER-SC, ST, and SST(LC or cladding - ANSWER-The glass or plastic shield around the core of a fiber-optic cable. Cladding reflects light back to the core in patterns that vary depending on the transmission mode. This reflection allows fiber to bend around corners without impairing the light-based signal. Multimode Fiber (MMF) - ANSWER-Larger core with multiple paths of light. Common for backbone and horizontal cabling in buildings. OM2 - Not recommended for new installs. OM3 - Higher bandwidth. OM4 - Highest bandwidth for MMF. 2000m/6500ft limitation. 850 nm and 1300 nm (nanometers) Singlemode Fiber - ANSWER-Smaller core with only one path of lights. Horizontal, riser, campus environments. 9 um core, 125 um cladding. OS1 - LAN, tight buffered construction, 1310/1550 nm OS2 - Outside Plant, 1310, 1490, 1550, 1625 nm 3000m/9842ft limtations. Ribbon Fiber - ANSWER-Multiple 250 um fibers bonded into a flat color coded ribbon. Can splice a bunch at a time. Fiber - Tight buffer diameter - ANSWER-900 um Fiber - Acrylate coating diameter - ANSWER-250 um OM1 - ANSWER-850 nm OFL - 200 MHz•km (3.5dB/km) 1300 nm - 400 MHz•km (1.5dB/km) OM2 - ANSWER-850 nm OFL - 500MHz•km (3.5dB/km) 1300nm - 500MHz•km (1.5dB/km) OM3 - ANSWER-850 nm OFL - 1500MHz•km (3.5dB/km) 850 nm RFL - 2000MHz•km (3.5dB/km) 1300 nm - 500MHz•km (1.5dB/km) OM4 - ANSWER-850 nm OFL - 3500MHz•km (3.5dB/km) 850 nm RFL - 4700MHz•km (3.5dB/km) 1300 nm - 500MHz•km (1.5dB/km) Modal Distortion - ANSWER-A light distortion problem unique to MMF fiber-optic cable. Happens when light signals are sent at the same time. chromatic dispersion - ANSWER-The broadening of a pulse due to different propagation velocities of the spectral components of the light pulse. Begins at the light source Modal Bandwidth is described in terms of... - ANSWER-(MHz)(km) Ferrule Key Latching Mechanism - ANSWER-flat or pre-radiused end assures consistent connector orientation within couplers locks in place Straight Tip (ST) - ANSWER-One of the most common fiber-optic connectors, similar in style to the BNC connector in coax subscriber connector (SC) - ANSWER-A square snap coupling for fiber-optic cable, about 2.5 mm wide, used for cable-to-cable connections or to connect cables to network devices. It latches with a push-pull action similar to audio and video jacks. Small Form Factor (SFF) - ANSWER-LC and MU an example of array connectors... - ANSWER-MPO Can terminate 6-72 optical fibers into a single ferrule Ohm's Law - ANSWER-V=IR Typical balanced twisted pair cable - ANSWER-100 Ohms UTP 4 pairs blue, orange, green, brown (tip/ring) 8P8C -B pinout - ANSWER-White/orange Orange White/green Blue White/blue Green White/brown Brown Simplex - ANSWER-A type of transmission in which signals may travel in only one direction over a medium. Half Duplex - ANSWER-Communication between two devices whereby transmission takes place in only one direction at a time. Full Duplex - ANSWER-Communication that happens in two directions at the same time. 1 cycle 60 cycles 1000 cycles 1 million cycles 1 billion cycles 1 trillion cycles - ANSWER-1 Hz 60 Hz 1 KHz 1 MHz 1 GHz 1 THz Voltage, current, and amperes - ANSWER-P(Power)=V(voltage) x I(Current) What is bandwidth expressed in - ANSWER-analog frequencies (0Hz to 1MHz) AWG - ANSWER-Smaller number - bigger wire Higher number - smaller wire A balanced twisted pair has... - ANSWER-a nominal characteristic impedance of 100 Ohms A unbalanced coaxial cable has... - ANSWER-a nominal characteristic impedance of 75 Ohms Category 3 Category 5e Category 6 Category 6A Category 8 - ANSWER-16 MHz 100 MHz 250 MHz 500 MHz 2000 MHz 8P8C -A pinout - ANSWER-White/green Green White/Orange Blue White/blue Orange White/brown Brown USOC RJ-61 pinout - ANSWER-White/brown White/green White/orange Blue White/blue Orange Green Brown EF - ANSWER-Entrance Facilities - telecommunications services entrance to the building. Underground, tunnel, buried, Aerial, and wireless ER - ANSWER-Houses equipment that serves an entire building unlike a TR that serves a single floor TR - ANSWER-Telecommunications room - serves one floor TE - ANSWER-A TE is a subset of a TR that generally serves a limited space. NOT TO BE USED TO REPLACE A TR Normal rack height and width? - ANSWER-7 feet tall and 19/23 inches wide Conduit fill ratio - ANSWER-40 percent for new installation, not to exceed 60 percent J-hooks - ANSWER-Typically used to hold up to 50 cables. Placed every 4-5 feet to support cable Surface Mount Box types - ANSWER-Shallow, Standard, and Deep What are the six elements of professionalism listed in the ITSIMM - ANSWER- An installer should _ in public, and _ in private - ANSWER-Praise. Correct. Cabling installation companies are dependent on _ for new and repeat business - ANSWER-Customers What are the percentages of communication perception? - ANSWER-Body language - 55% Tone of voice - 38% Word choice - 7% What are three ways to minimize EMI? - ANSWER-Using shielded cable (STP) Using fiber instead of copper Putting the cable in conduit (shielded pathway) 1 sine wave = _ - ANSWER-1 Hz The number of cycles a signal is repeated in a given time period is defined as the _ - ANSWER-Frequency 10,000 MHz = _ GHz - ANSWER-10 An analog signal varies in what two aspects? - ANSWER-amplitude and frequency What device converts a computers digital signals into 1s and 0s into two separate analog frequencies for transmission on a standard telephone line? - ANSWER-Modem What type of coaxial cable is used for video in backbone distribution? - ANSWER-Series 11 What type of BNC connector is not recommended for any install? - ANSWER-Screw on What type of coaxial connector cannot be used with cables that have stranded center conductors? - ANSWER-F connectors What type of construction allows the cable jacket to expand and contract with changes in temperature without affecting the fibers? - ANSWER-Loose tube What are the two ways of coupling fibers? - ANSWER-plug to plug plug to jack Hierarchy of codes, standards, and regulations - ANSWER-AHJ Codes and regulations Standards Industry best practices Manufacturer instructions What are the two common depths for telecommunications racks? - ANSWER-4 inch and 6 inch a _ conduit terminates in a vertical orientation - ANSWER-stub-up a _ conduit terminates in a horizontal orientation - ANSWER-stub-out