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Network+ Exam Prep > 2.4-2.5 > Flashcards

2.4-2.5 Flashcards

1
Q

A 66 block is a

A

punch down block used to connect individual copper wires together. Primarily for telephone applications.

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2
Q

110 blocks are used primarily for

A

telephone applications in high-speed networks because the introduce less crosstalk.

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3
Q

Patch panel is a mounted hardware assembly that…

A

contains ports used to connect and manage incoming and outgoing LAN cables.

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4
Q

T568A Pinout Order

A

Pin 1: GW = White with green stripe

Pin 2: G = Green Pin

3: OW = White with orange stripe

Pin 4: B = Blue Pin

5: BW = White with blue stripe Pin
6: O = Orange

Pin 7: BrW = White with brown stripe

Pin 8: Br = Brown

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5
Q

fiber distribution panel

A

A patch panel for fiber optic cabling is called a

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6
Q

The smart jack is a way for your (WAN) provider to perform

A

some additional troubleshooting functions without having to visit your location.

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7
Q

T568B Pinout Order

A

Pin 1: OW = White with orange stripe

Pin 2: O = Orange

Pin 3: GW = White with green stripe

Pin 4: B = Blue

Pin 5: BW = White with blue stripe

Pin 6: G = Green

Pin 7: BrW = White with brown stripe

Pin 8: Br = Brown

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8
Q

What are some functions that Smart Jacks Allow (WAN) Providers to perform? (2)

A
  • Set up a loopback
  • Provide diagnostics remotely
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9
Q
A

T568A

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10
Q

When organizing an MDF or IDF make sure to record names in

A

tables and diagrams.

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11
Q
A

T568B

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12
Q

When organizing an MDF or IDF develop a naming convention and use it to label (5)

A
  • Cables
  • Racks
  • Wall jacks
  • Patch panel ports
  • Network devices
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13
Q

When organizing an MDF or IDF document these four facts about the cable details attached: (4)

LIL G

A
  • Location
  • Installation dates
  • Lengths
  • Grade (Cable Grade)
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14
Q

When organizing an MDF or IDF Consider using

A

cable management software

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15
Q
A

A crimping tool is used to attach connectors to wires. Some are designed for power connections.

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16
Q

Punch down tool

A

Forces wire into a wiring block

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17
Q

Optical Time Domain Reflectometer (TDR / OTDR) (4)

Performs the same function as a TDR, but is used for fiber optic cables.

A
  • Measures signal loss
  • Creates wire maps.
  • Estimates fiber lengths
  • Determines light reflection
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18
Q

How do OTDR’s work

A

sends light pulses into the fiber cable and measures the light that is scattered or reflected back to the device.

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19
Q

A multimeter tests (3)

A
  • AC/DC voltages
  • Continuity
  • Wire mapping
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20
Q

A Tone Probe/Generator can be used to

A

trace and identify cables or wires within a group by sending an analog sound through the wire

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21
Q

A cable tester (3) main functions

A
  • Can identify Missing pins
  • Can identify Crossed wires
  • Verifies that the cable can carry a signal from one end to the other

****Not generally used for frequency testing

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22
Q

cable tester can be used to quickly tell the difference between

A

a crossover and a straight-through cable..

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23
Q

A Loopback adapter (lookback plug) (2)

A
  • Used to verify that a device can both send and receive signals.
  • reflects a signal from the transmit port on a device to the receive port on the same device.
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24
Q

A spectrum analyzer

A

measures the magnitude of an input signal versus frequency

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25
Q

Bandwidth Speed tester

A

an online tool that is used to test the bandwidth of your internet connection

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26
Q

Attenuation

A

is the loss of signal strength from one end of a cable to the other. This is also known as dB loss.

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27
Q

Attenuation TroubleShooting: (3)

A
  • never to exceed the maximum cable length
  • Cables at a higher temperature experience more attenuation
  • A repeater regenerates the signal and removes the effects of attenuation
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28
Q

A Crosstalk***

A

is interference that is caused by signals within the twisted pairs of wires

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29
Q

Cross Talk TroubleShooting (3)

A
  • Create more twist
  • Twist wires at a different rate
  • Keep wires from being damaged
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30
Q

EMI TroubleShooting: (3)

A
  • Use fiber optic instead of copper cables.
  • Use shielded twisted pair cables instead of Un-Shielded
  • Avoid installing cables near EMI/RFI sources.
    • (generators, motors (such as elevator motors), radio transmitters, welders, transformers, and fluorescent lighting.)
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31
Q

Incorrect Pin-Out (Bad Ethernet Cable Setup)

A
  • Use a cable tester to make sure the cables are properly wired
  • Start off with a known good Cable
32
Q

Electrical Shorts occur can be caused (2)

A
  • worn wire jackets
  • metal object piercing two or more wires.
33
Q

An open circuit

A

is when a cut in the wire prevents the original signal from reaching the end of the wire.

34
Q

Transceiver mismatch when connecting one network device to another

A

matching transceivers must be used.

-For twisted pair cabling, a mismatch in speed is a common issue.

35
Q

TX/RX reverse

A

Transmit and the Receiver pairs of a cable are inversed

36
Q

Reflection

A

A measurable amount of light is reflected when it hits the ends of the cable.

Fiber Cable Length/Damage

37
Q

Refraction

A

If the light hits the boundary between the core and the cladding at too steep of an angle, the light is refracted into the cladding instead of reflected back into the core, causing signal loss

38
Q

Absorption

A

Impurities in the fiber can also absorb the light, converting it to another form of energy, like heat. This is a major cause of signal loss.

39
Q

r

punch down block used to connect individual copper wires together. Primarily for telephone applications.

A

A 66 block is a

40
Q

r

telephone applications in high-speed networks because the introduce less crosstalk.

A

110 blocks

41
Q

r

contains ports used to connect and manage incoming and outgoing LAN cables.

A

Patch panel is a mounted hardware assembly that…

42
Q

r

A patch panel for fiber optic cabling is called a

A

fiber distribution panel

43
Q

r

T568A

A
44
Q

r

T568B

A
45
Q

r

demarcation point between the carrier’s local loop and the customer’s premises wiring.

A

In telecommunications, a network interface device (NID; also known by several other names) serves as the

46
Q

r

perform some additional functions without having to visit your location.

A

The smart jack is a way for your wide area network (WAN) provider to

47
Q

r

  • Set up a loopback and provide diagnostics
  • Send alarm and reconfiguration info to the (WAN) Provider so they can make changes remotley
A

What are some functions that Smart Jacks Allow (WAN) Providers to perform? rs

48
Q

r

Pinout Order Pin 1: OW = White with orange stripe

Pin 2: O = Orange

Pin 3: GW = White with green stripe

Pin 4: B = Blue Pin 5: BW = White with blue stripe

Pin 6: G = Green

Pin 7: BrW = White with brown stripe

Pin 8: Br = Brown

A

T568B

49
Q

r

Pin 1: GW = White with green stripe

Pin 2: G = Green Pin

3: OW = White with orange stripe

Pin 4: B = Blue Pin

5: BW = White with blue stripe Pin
6: O = Orange

Pin 7: BrW = White with brown stripe

Pin 8: Br = Brown

A

T568A

50
Q

r

telephone company’s responsibility for maintenance ends and the consumer’s responsibility begins.

A

demarcation point defines where the

51
Q

r

cables, wall jacks, patch panel ports, network devices, and racks.

A

When organizing an MDF or IDF develop a naming convention and use it to label

52
Q

r

  • Location
  • Installation dates
  • Cable lengths
  • Cable grades
A

When organizing an MDF or IDF document these four facts about the cable details attached:

53
Q

r

cable plant documentation or cable management software

A

When organizing an MDF or IDF Consider using

54
Q

r

A crimping tool is used to attach connectors to wires. Some are designed for power connections.

A
55
Q

r

Forces wire into a wiring block

Trims the wires and breaks the insulation

A

Punch down tool (2)

56
Q

r

  • Estimate fiber lengths
  • Measure signal loss,
  • determine light reflection,
  • Create wire maps.

Performs the same function as a TDR, but is used for fiber optic cables.

A

Optical Time Domain Reflectometer (TDR / OTDR)

57
Q

r

sends light pulses into the fiber cable and measures the light that is scattered or reflected back to the device.

A

How do OTDR’s work

58
Q

r

AC/DC voltages levels

Continuity, wire mapping

A

A multimeter tests

59
Q

r

a device for testing average power in fiber optic systems.

A

An optical power meter (OPM)/ Light Meter

60
Q

r

trace and identify cables or wires within a group by sending an analog sound through the wire

A

A Tone Probe/Generator

61
Q

r

  • Can identify missing pins or crossed wires
  • Not generally used for frequency testing
  • Verifies that the cable can carry a signal from one end to the other
A

A cable tester

62
Q

r

quickly tell the difference between a crossover and a straight-through cable..

A

cable tester can be used to

63
Q

r

reflects a signal from the transmit port on a device to the receive port on the same device.

Used to verify that a device can both send and receive signals.

A

A Loopback adapter (lookback plug) (2)

64
Q

r

measures the magnitude of an input signal versus frequency within the full frequency range of the instrument.

A

A spectrum analyzer

65
Q

r

an online tool that is used to test the bandwidth of your internet connection. There are countless speed test websites available, all of which provide essentially the same information:

A

Bandwidth Speed tester

66
Q

r

is the loss of signal strength from one end of a cable to the other. This is also known as dB loss.

A

Attenuation

67
Q

r

is interference that is caused by signals within the twisted pairs of wires (for example, current flow on one twisted pair causing a current flow on an adjacent pair).

A

A Crosstalk***

68
Q

r

  • never to exceed the maximum cable length
  • Cables at a higher temperature experience more attenuation
  • A repeater regenerates the signal and removes the effects of attenuation
A

Attenuation TroubleShooting: (3)

69
Q

r

  • Twisting of wires into pairs helps reduce crosstalk
  • Each pair of wires is twisted at a different rate to reduce crosstalk between pairs.
  • Crosstalk occurs, when wires are crushed or where the plastic coating is worn.
A

Cross Talk TroubleShooting (3)

70
Q

r

  • Use fiber optic instead of copper cables.
  • Use shielded twisted pair cables instead of Un-Shielded
  • Avoid installing cables near EMI/RFI sources.
    • (generators, motors (such as elevator motors), radio transmitters, welders, transformers, and fluorescent lighting.)
A

EMI TroubleShooting: (3)

71
Q

r

  • Use a cable tester to make sure the cables are properly wired
  • Start off with a known good Cable
A

Incorrect Pin-Out (Bad Ethernet Cable Setup)

72
Q

r

  • worn wire jackets,
  • metal object piercing two or more wires.
A

Electrical Shorts occur can be caused (2)

73
Q

r

is when a cut in the wire prevents the original signal from reaching the end of the wire.

A

An open circuit

74
Q

r

One particular type of cabling issue is the one in which the Transmit and the Receiver pairs of a cable are inversed

A

TX/RX reverse

75
Q

r

A measurable amount of light is reflected when it hits the ends of the cable.

Fiber Cable Length/Damage

A

Reflection

76
Q

r

If the light hits the boundary between the core and the cladding at too steep of an angle, the light is refracted into the cladding instead of reflected back into the core, causing signal loss

A

Refraction

77
Q

r

Impurities in the fiber can also absorb the light, converting it to another form of energy, like heat. This is a major cause of signal loss.

A

Absorption

Network+ Exam Prep (11 decks)

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