BICSI Installer 1 Exam prep, With Complete Verified Solution, 100%

BICSI Installer 1 Exam prep, With Complete Verified Solution, 100% 25-pair color code 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 Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua NVP Nominal Velocity of Propagation Insertion loss The difference in the amount of power received before and after something is inserted into the circuit. Resistance Resistance is expressed in Ohms, and is the property of a conductor to resist the flow of electricity through it. V=IR Inductance Is a property of an electromagnetic field built around a conductor that opposes any change in the current flow in a circuit Capacitance is a property of conductors that allows storage of electric charges when potential differences exist between the conductors. Impedance (V) Total opposition of current flow measured in Ohms American Wire Gauge (AWG) 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) one million hertz, especially as a measure of the frequency of transmissions Megabit (Mb) Approximately one million bits. Often used as a measurement of data transfer throughput. Bandwidth The amount of data that can be transmitted over a network in a given amount of time. Decibel (dB) A unit used to compare the loudness of different sounds. Crosstalk when data bleeds from one pair to another in a cable Alien Crosstalk (AXT) Unwanted signal coupling from one permanent link to another USOC Universal Service Order Code Coaxial cable types Series-6 and Series-11 Coaxial connectors Series-6 uses BNC and F connectors Series-11 uses F and N connectors Fiber connectors SC, ST, and SST(LC or cladding 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) 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 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 Multiple 250 um fibers bonded into a flat color coded ribbon. Can splice a bunch at a time. Fiber - Tight buffer diameter 900 um Fiber - Acrylate coating diameter 250 um OM1 850 nm OFL - 200 MHz•km (3.5dB/km) 1300 nm - 400 MHz•km (1.5dB/km) OM2 850 nm OFL - 500MHz•km (3.5dB/km) 1300nm - 500MHz•km (1.5dB/km) OM3 850 nm OFL - 1500MHz•km (3.5dB/km) 850 nm RFL - 2000MHz•km (3.5dB/km) 1300 nm - 500MHz•km (1.5dB/km) OM4 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 A light distortion problem unique to MMF fiber-optic cable. Happens when light signals are sent at the same time. chromatic dispersion 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... (MHz)(km) Ferrule Key Latching Mechanism flat or pre-radiused end assures consistent connector orientation within couplers locks in place Straight Tip (ST) One of the most common fiber-optic connectors, similar in style to the BNC connector in coax subscriber connector (SC) 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) LC and MU an example of array connectors... MPO Can terminate 6-72 optical fibers into a single ferrule Ohm's Law V=IR Typical balanced twisted pair cable 100 Ohms UTP 4 pairs blue, orange, green, brown (tip/ring) 8P8C -B pinout White/orange Orange White/green Blue White/blue Green White/brown Brown Simplex A type of transmission in which signals may travel in only one direction over a medium. Half Duplex Communication between two devices whereby transmission takes place in only one direction at a time. Full Duplex 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 1 Hz 60 Hz 1 KHz 1 MHz 1 GHz 1 THz Voltage, current, and amperes P(Power)=V(voltage) x I(Current) What is bandwidth expressed in analog frequencies (0Hz to 1MHz) AWG Smaller number - bigger wire Higher number - smaller wire A balanced twisted pair has... a nominal characteristic impedance of 100 Ohms A unbalanced coaxial cable has... a nominal characteristic impedance of 75 Ohms Category 3 Category 5e Category 6 Category 6A Category 8 16 MHz 100 MHz 250 MHz 500 MHz 2000 MHz 8P8C -A pinout White/green Green White/Orange Blue White/blue Orange White/brown Brown USOC RJ-61 pinout White/brown White/green White/orange