Media and Cabling Distribution Flashcards

(62 cards)

1
Q

types of media

A

copper, fiber optic, wireless

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2
Q

coaxial cable

A

insulated copper core, braided metal shielding

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3
Q

RG-6

A

coaxial cable used by local cable companies to connect homes

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4
Q

RG-59

A

coaxial cable used to carry video between devices like cable box to tv

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5
Q

f-connector

A

coaxial cable connector used for cable tv and cable modems

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6
Q

bnc

A

old coaxial cable connector

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7
Q

twinaxial cable

A

like coax but uses 2 inner conductors

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8
Q

serial cable

A

series of straight copper wires inside plastic jacket

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9
Q

DB-9 or DB-25

A

9-pin or 25-pin serial cable for async connection to external modem

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10
Q

twisted pair cables

A

most popular physical media for lan
UTP/STP
8 individual insulated copper wires
tighter twists = less EMI

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11
Q

utp

A

unshielded twisted pair

cheaper, most common

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12
Q

stp

A

shielded twisted pair
costs more
more shielding = less EMI
used in factories with lots of lights or EMI

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13
Q

RJ-45

A

8-pin ethernet twisted pair connector

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14
Q

RJ-11

A

6-pin twisted pair connector

telephone systems

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15
Q

RJ

A

registered jack

used to carry voice or data

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16
Q

bandwidth

A

theoretical measure of how much data could be transferred from src to dest

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17
Q

throughput

A

actual measure of how much data is transferred from src to dest

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18
Q

cat3

A

10base-t
10Mbps
100m

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19
Q

cat5

A

100base-tx
100Mbps
100m

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20
Q

cat5e

A

1000base-t
1000Mbps
100m

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21
Q

cat6

A

1000base-t 1000Mbps 1000m

10Gbase-t 10Gbps 55m

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22
Q

cat6a

A

10Gbase-t
10Gbps
100m

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23
Q

cat7

A

10Gbase-t
10Gbps
100m

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24
Q

cat8

A

40Gbase-t
40Gbps
30m

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25
cable runs
keep under 70m from idf to office
26
straight-through patch cables
contains the same pinout on both ends | connect laptop/desktop/server/router to switch/modem/hub/bridges
27
crossover patch cables
contains different pinouts on each end t-568b t-568a switch switch laptop laptop
28
t-568b
``` orange/white orange green/white blue blue/white green brown/white brown ```
29
t-568a
``` green/white green orange/white blue blue/white orange brown/white brown ```
30
mdix
medium dependent interface crossover | automated way to electronically simulate crossover cable if using straight-through
31
plenum cable
special coating to make cable fire-retardant mimeses dangerous fumes ceilings walls and raised floors
32
non-plenum cable
pvc cables, default | dont use in raised floors ceilings or walls (places you cannot see them)
33
fiber optic cables
use light from led or laser to transmit information through glass immune to EMI, longer range, more data capacity Tbps mmf, smf
34
smf
single mode fiber longer distances smaller core size 8.3-10 microns
35
mmf
``` multimode fiber shorter distances larger core for multiple modes of travel 50-100 microns in diameter <2kms ```
36
sc
fiber subscriber connector | uses apc
37
st
fiber straight tip connector
38
lc
fiber local/lucent connector
39
mtrj
fiber mechanical transfer registered jack | uses upc
40
apc
angled physical contact | used with subscriber connector
41
upc
ultra physical contact
42
wdm
wavelength division multiplexing | combines multiple signals into 1 to send over single fiber using different wavelengths of light
43
cwdm
``` coarse wavelength division multiplexing up to 18 channels 20nm channel distance 10Gbps ethernet 16Gbps fiber ```
44
dwmd
dense wavelength division multiplexing up to 80 channels 0.8nm channel distance 8Tbps = 100Gbps/channel
45
fiber optic advantages
``` higher bandwidth longer distances immune to EMI better security 40+ Km 69+ Tbps ```
46
copper advantages
less expensive easy to install < 100m 10Gbps
47
media converters / transceivers
convert media from one format to another layer 1 device ethernet to fiber
48
bidirectional transceiver/ half duplex
devices take turns communicating | either transmit or receive, not both at the same time
49
full duplex
devices can both communicate at the same time
50
gbic
Standard, gigabit Ethernet transceiver | copper or fiber
51
sfp
small form-factor pluggable Compact, optical module transceiver 4.2 Gbps
52
sfp+
Enhanced small form-factor pluggable | 16 Gbps
53
qsfp
quad small form-facto pluggable transceiver | 40Gbps
54
qsfp+
enhanced quad small form-facto pluggable transceiver | 41.2 Gbps
55
demarcation point
point where wan connection from isp enters your building
56
Cable Distribution
An organized system to connect - the network’s backbone in the main distribution frame to the - intermediate distribution frames and finally to the - end user’s wall jacks
57
66 block
old punchdown block Used for phones and older LAN wiring Causes crosstalk due to proximity of cables
58
110 block
punchdown block used for higher-speed network wiring cat5+
59
Krone block
A proprietary European alternative to a 110 block
60
BIX block
Another proprietary punch down block that comes in various sizes
61
Patch Panels (Copper)
Device with jacks to connect wiring from the jack to a network switch in a flexible manner has punch downs on the back has rj-45 on front
62
Patch Panels (Fiber)
Connect fiber jacks throughout building to a single patch panel in network closet Front uses patch cables to connect different wall jacks and switch ports