BICSI > bow > Flashcards

bow Flashcards

(65 cards)

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1
Q

Insulated Wire

A

Single wire with cover

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2
Q

Twisted Pair

A

Two wires, twisted

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3
Q

Cable

A

Multiple wires in jacket

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4
Q

Pigtail

A

Connector on one end

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5
Q

Cord

A

Connectors on both ends

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6
Q

Conductors

A

Can be solid/stranded

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7
Q

Signal

A

Energy that holds info via different patterns

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8
Q

Connects

A

Can be male/female

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9
Q

Plug

A

Male with pins

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10
Q

Jacks

A

Female with contacts

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11
Q

Transmit

A

To send

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12
Q

Propagate

A

The continuation of what was transmitted

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13
Q

Body Language Composition

A

Body language 55%, tone 38%, words used 7%

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14
Q

Elements of Professionalism

A

Credentials / ability to work, on site activities, remaining current, personal image / ethos, interpersonal skills, support employer n peers

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15
Q

Keys of Communication

A

Clear, concise, clean, complete, timely, truthful, unbiased

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16
Q

Blueprints Drawings

A

A-Architectural, E-Electrical, T-Telecommunications, P-Plumbing, FP-Fire Protection, S-Structural

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17
Q

Hierarchy of Compliance

A

AHJ, codes, manufacturers instructions, standards, industry best practices

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18
Q

Codes vs Standards

A

Codes = required, standards = recommended

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19
Q

Code Making / Enforcing Examples

A

National Fire Protection Agency / National Electrical Code, Federal Communications Committee, Occupational Safety Health Administration

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20
Q

Standard Making Examples

A

American National Standard Institute, International Electrotechnical Committee, International Standard Organization

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21
Q

Transmission

A

The sending of info using electromagnetic energy via electrical/optical signals through a transport medium (air, fiber, glass)

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22
Q

Simplex

A

Transmits in one direction

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23
Q

Half Duplex

A

Transmits in both directions, one at a time

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24
Q

Full Duplex

A

Transmits in both directions, simultaneously

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25
Direct Current properties/measured in
Electrons go straight through (discontinuous, on/off, Mbs)
26
Alternating Current properties/measured in
Electrons are pushed back and forth (continuous, amplitude/freq, MHz)
27
Voltage
Measured in electrical pressure, volts (V)
28
Current (I) / measured in
Measurement of the amount of electrons moving at a given time/point, amps
29
Circuit
Complete path for electricity; the going and coming of electrons
30
Resistance (R) / measured in
property of an electrical conductor to resist electrical flow, ohms
31
EMI causes/prevention
some causes (crosstalk, improper insulation, other cords/machines, dmg to cord) preventions (shielding, separation from the cause, cord in conduit, fiber over copper)
32
Modem
dig-ana-dig
33
Codec
ana-dig-ana
34
Why is Copper most used
cheap, flexible/ductile, great electrical conductor
35
What is Drawing
the act of passing copper throw a machine in order to thin it out
36
relationship between thinness/thickness and AWG
the thinner the wire, the higher the number in AWG (vice versa)
37
AWG Standard
22-24 AWG
38
Ohms Law
V=I*R , R=V/I , I=V/R
39
what is an inductor
a coiled conductor which purposefully causes greater inductance
40
what is inductance
its the magnetism given off by electrons moving within a circuit
41
Inductance Reactance
is the resistance electrons face from inductance in a circuit
42
Impedance
combination of resistance, inductance reactance, capacitance reactance
43
Attenuation/Insertion Loss (definition/cause)
weakening of signal happens when a user makes an change externally (like plugging in an additional computer, splicing, etc)
44
Return Loss (definition/cause)
is when the signal sent is returned back can be due to different rated cables carrying said signal (splicing cat6 to cat5) different sized cables carrying said signal impedance mismatch
45
NVP (nominal velocity of propagation)
used to measure length of cable by sending a singular signal down the wire and back, taking the time it took for that to happen, the dividing it by the speed of light (speed of transmission along cable / speed of light in vacuum)
46
crosstalk (definition/cause)
spilling of electromagnetic energy between wires, along the circuit crimping incorrectly, damaged insulation within cable
47
UTP
unshielded twisted pair
48
FTP
foil on each twisted pair
49
STP
shield over all twisted pairs
50
SFTP
foil on each twisted pair, then encapsulated in shield
51
5 most important CATS and MHz
CAT3 (16MHz), CAT5e (100MHz), CAT6 (250MHz), CAT6a (500MHz), CAT8 (2000MHz)
52
modular twisted pair connectors and typical uses
4P4C/RJ11 (telephone handset cords), 6P6C (telephone and modem cords), 8P8C/RJ45 (data communications and patch cords)
53
tip vs ring
tip = send, ring = receive
54
name modular plug contacts and how they differ
stranded IPC (insulated piercing contact) cuts through the insulator to contact the conductor solid IDC (insulated diverging contact) cuts the diameter of insulator to contact conductor
55
name pin pair assignments and uses
T568A and T568B for data , USOC for telephone
56
T568A
WG, G, WO, B, WB, O, WBr, Br
57
T568B
WO, O, WG, B, WB, G, WBr, Br
58
USOC
WBr, WG, WO, B, WB, O, G, Br
59
characteristic impedance of balanced twisted pairs
100ohms
60
Coax cable compared to balancedTP / how is it constructed
unbalanced, higher bandwidth, better protection against EMI singular wire, foam, aluminum poly foil, copper braid, jacket
61
series 6 coax
tv, catV, security cams / solid center conductor / BNF or F connectors
62
series 11 coax
video backbone distribution / solid or stranded conductor / F or N connector / biggest / lowest signal loss
63
series 59
tv, catV, security cams / solid center conductor / BNF or F connectors / smallest / most susceptible to signal loss / used for shorter distnace / most flex
64
coax connectors and configurations
F (no central pin, screw on) N (central pin, screw on) BNC ( central pin, twist n lock)
65
the different ways to connect to coax cable
compress, crimp, screw on (not advised)
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