25-pair color code - ANSWER-White - Blue, orange, green, brown, slate
Red - Blue, orange, green, brown, slate
Black - Blue, orange, green, brown,
... [Show More] 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 [Show Less]