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MJ Class > Fiber > Flashcards

Fiber Flashcards

1
Q

62.5/125-µm multimode cable (OM1) attenuation at 850nm

A

3.5

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2
Q

62.5/125-µm multimode cable (OM1) attenuation at 1300nm

A

1.5

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3
Q

62.5/125-µm multimode cable (OM1) bandwidth MHz-km at 850nm

A

200 (OFL)

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4
Q

62.5/125-µm multimode cable (OM1) bandwidth MHz-km at 1300nm

A

500

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5
Q

50/125-µm multimode cable (OM2) bandwidth MHz-km at 850nm

A

500 (OFL)

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6
Q

50/125-µm multimode cable (OM2) bandwidth MHz-km at 1300nm

A

500

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7
Q

50/125-µm multimode cable (OM2) attenuation at 850nm

A

3.5

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8
Q

50/125-µm multimode cable (OM2) attenuation at 1300nm

A

1.5

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9
Q

50/125-µm multimode cable (OM3) attenuation at 850nm

A

3.5

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10
Q

50/125-µm multimode cable (OM3) attenuation at 1300nm

A

1.5

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11
Q

50/125-µm multimode cable (OM3) bandwidth at 850nm

A

1500 (OFL)
2000 (EMB)

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12
Q

50/125-µm multimode cable (OM3) bandwidth at 1300nm

A

500

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13
Q

50/125-µm multimode cable (OM4) attenuation at 850nm

A

3.5

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14
Q

50/125-µm multimode cable (OM4) attenuation at 1300nm

A

1.5

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15
Q

50/125-µm multimode cable (OM4) bandwidth at 850nm

A

3500 (OFL)
4700 (EMB)

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16
Q

50/125-µm multimode cable (OM4) bandwidth at 1300nm

A

500

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17
Q

50/125-µm multimode cable (OM5) attenuation at 850/880nm

A

3.0

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18
Q

50/125-µm multimode cable (OM5) attenuation at 910/940nm

A

3.0

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19
Q

50/125-µm multimode cable (OM5) bandwidth at 850/880nm

A

3500 (OFL)
4700 (EMB) at 850

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20
Q

50/125-µm multimode cable (OM5) bandwidth at 910/940nm

A

3500 (OFL)
4700 (EMB) at 850

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21
Q

Singlemode cable (OS1) (grandfathered) attenuation at 1310 nm

A

1.0

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22
Q

Singlemode cable (OS1) (grandfathered) attenuation at 1550 nm

A

1.0

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23
Q

Singlemode cable (OS1a) attenuation at 1310 nm

A

1.0

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24
Q

Singlemode cable (OS1a) attenuation at 1383 nm

A

1.0

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25
Q

Singlemode cable (OS1a) attenuation at 1550 nm

A

1.0

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26
Q

Singlemode cable (OS2) attenuation at 1310 nm

A

0.4

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27
Q

Singlemode cable (OS2) attenuation at 1383 nm

A

0.4

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28
Q

Singlemode cable (OS2) attenuation at 1550 nm

A

0.4

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29
Q

Singlemode cable bandwidth, at any wavelength

A

N/A

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30
Q

Distance supported by OM1 at 100Mb speed?

A

550m, 1800 ft

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31
Q

Distance supported by OM1 at 1Gb speed?

A

220m, 722 ft

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32
Q

Distance supported by OM1 at 10Gb speed?

A

33m, 108 ft

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33
Q

Distance supported by OM2 at 100Mb speed?

A

550m, 1800 ft

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34
Q

Distance supported by OM2 at 1Gb speed?

A

550m, 1800 ft

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35
Q

Distance supported by OM2 at 10Gb speed?

A

82m, 269 ft

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36
Q

Distance supported by OM2 at 40Gb speed?

A

N/A

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37
Q

Distance supported by OM1 at 40Gb speed?

A

N/A

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38
Q

Distance supported by OM2 at 100Gb speed?

A

N/A

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39
Q

Distance supported by OM1 at 100Gb speed?

A

N/A

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40
Q

Distance supported by OM3 at 100Gb speed?

A

100m, 328 ft

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41
Q

Distance supported by OM3 at 40Gb speed?

A

100m, 328 ft

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42
Q

Distance supported by OM3 at 10Gb speed?

A

300m, 984 ft

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43
Q

Distance supported by OM3 at 1Gb speed?

A

550m, 1800 ft

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44
Q

Distance supported by OM3 at 100Mb speed?

A

550m, 1800 ft

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45
Q

Distance supported by OM4 at 100Mb speed?

A

550m, 1800 ft

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46
Q

Distance supported by OM4 at 1Gb speed?

A

550m, 1800 ft

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47
Q

Distance supported by OM4 at 10Gb speed?

A

550m, 1800 ft

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48
Q

Distance supported by OM4 at 40Gb speed?

A

150m, 500 ft

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49
Q

Distance supported by OM4 at 100Gb speed?

A

150m, 500 ft

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50
Q

Distance supported by OM5 at 100Mb speed?

A

N/A

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51
Q

Distance supported by OM5 at 1Gb speed?

A

N/A

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52
Q

Distance supported by OM5 at 10Gb speed?

A

550m, 1800 ft

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53
Q

Distance supported by OM5 at 40Gb speed?

A

150m, 500 ft

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54
Q

Distance supported by OM5 at 100Gb speed?

A

150m, 500 ft

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55
Q

Distance supported by singlemode at 100Gb speed?

A

10,000m, 32,800ft

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56
Q

Distance supported by singlemode at 40Gb speed?

A

10,000m, 32,800ft

57
Q

Distance supported by singlemode at 10Gb speed?

A

10,000m, 32,800ft

58
Q

Distance supported by singlemode at 1Gb speed?

A

10,000m, 32,800ft

59
Q

Distance supported by singlemode at 100Mb speed?

A

N/A

60
Q

For multimode testing, light source or OTDR must operate within range of 850 ± __nm or 1300 ± __ nm.

A

850 ± 30nm or 1300 ± 20nm

61
Q

For singlemode testing, light source or OTDR must operate within range of 1310 ± __nm or 1550 ± __ nm.

A

1310 ± 10 nm or 1550 ± 20nm

62
Q

Maximum channel attenuation for IEEE 802.3 EPON

A

20dB

63
Q

Maximum channel attenuation for IEEE 802.3av 10G-EPON

A

29dB

64
Q

Maximum channel attenuation for ITU G.984 GPON (B+ Optics)

A

28dB

65
Q

Maximum channel attenuation for ITU G.984 GPON (C+ Optics)

A

32dB

66
Q

Maximum channel attenuation for ITU G.987 10GPON

A

31dB

67
Q

Maximum distance supported for ITU G.984 GPON (B+ Optics)

A

20.1 km, 12.5 mi

68
Q

Maximum distance supported for for ITU G.984 GPON (C+ Optics)

A

60 km, 37 mi

69
Q

Maximum distance supported for for ITU G.987 10GPON

A

40 km, 25 mi

70
Q

Maximum distance supported for for IEEE 802.3av 10G-EPON

A

20.1 km, 12.5 mi

71
Q

Maximum distance supported for for IEEE 802.3 EPON

A

10 km, 6.2 mi

72
Q

What is the dB loss from mechanical splices in multimode and singlemode fiber?

A

0.3 dB

73
Q

What is the dB loss from fusion splices in multimode fiber?

A

0.1 dB

74
Q

What is the dB loss from fusion splices in singlemode fiber?

A

0.05 dB

75
Q

How many fiber strands does 40GB use?

A

2 or 8

76
Q

How many fiber strands does 100GB use?

A

4, 8, or 20

77
Q

How many fiber strands does 200GB use?

A

8

78
Q

How many fiber strands does 50GB use?

A

2

79
Q

How many fiber strands does 400GB use?

A

8 or 32

80
Q

Multimode optical fiber is best suited for premises applications where links are less than ____ for data rates of 155 Mb/s or less.

A

2000m, 6562 ft

81
Q

Multimode optical fiber is best suited for premises applications where links are less than ____ for data rates of 1 Gb/s or less.

A

550m, 1804 ft

82
Q

Multimode optical fiber is best suited for premises applications where links are less than ____ for data rates of 10Gb/s or less.

A

300m, 984 ft

83
Q

Multimode optical fiber is best suited for premises applications where links are less than ____ for data rates of 100Gb/s or 40Gb/s or less.

A

100m, 328 ft

84
Q

How many connection points are allowed in the permanent link?

A

3

85
Q

How many connection points are allowed in the channel model?

A

4

86
Q

How many levels of cross-connections are allowed in a backbone distribution system?

A

2

87
Q

Connections between any two HCs (FDs) shall not pass through more than _ cross-connections.

A

3

88
Q

What band is very low frequency?

A

Audio, 3-30 kHz

89
Q

What band is low frequency?

A

Audio, 30-300 kHz

90
Q

What band is medium frequency?

A

Radio (RF), 300-3000 kHz

91
Q

What band is high frequency?

A

Radio (RF), 3-30 MHz

92
Q

What band is very high frequency?

A

Video (TV) and Radio (RF), 30-300 MHz

93
Q

What band is ultra high frequency?

A

Video (TV) and Radio (RF), 300-3000 MHz

94
Q

What band is community antenna TV?

A

Video (TV), 54-1002 MHz

95
Q

What band is super high frequency?

A

Radar, 3-30 GHz

96
Q

What band is extremely high frequency?

A

Radar, 30-300 GHz

97
Q

What is the minimum space for first five tenants in a Grade 1 multi-welling unit CTR?

A

14.5 in wide, 24 in high

98
Q

What is the minimum space for first five tenants in a Grade 2 multi-welling unit CTR?

A

30.5 in wide, 24 in high

99
Q

What is the minimum additional space per tenant after the first five tenants in a Grade 1 multi-welling unit CTR?

A

50 in²

100
Q

What is the minimum additional space per tenant after the first five tenants in a Grade 2 multi-welling unit CTR?

A

100 in²

101
Q

What is the minimum telecom room size for a serving area of 5000 ft² or less?

A

10 ft by 8 ft

102
Q

What is the minimum telecom room size for a serving area between 5000 ft² and 8000 ft²?

A

10 ft by 9 ft

103
Q

What is the minimum telecom room size for a serving area between 8000 ft² and 10,000 ft²?

A

10 ft by 11 ft

104
Q

What is the maximum serving area size by a wall cabinet, self contained cabinet, or enclosed cabinet?

A

1,000 ft²

105
Q

What is the maximum serving area size by a shallow room?

A

5,000 ft²

106
Q

What type of cabling facility may be housed in a telecommunications room (TR)?

A

Floor, building, or campus distributor

107
Q

Radiating coaxial cabling antennas offer wide bandwidth for combined systems, with operating frequencies ranging from ___ to more than ___

A

70 MHz; 2.4 GHz

108
Q

In analog video signaling, which one of the following is the most common combination of video signals in both professional AV and home recording devices?

A

Composite video

109
Q

Vacancy sensors for lighting control save ___ energy than occupancy sensors for lighting control.

A

More

110
Q

Each port on a network switch represents a different ____ domain.

A

Collision

111
Q

When describing control protocol standards for audiovisual (AV) systems, universal serial bus (USB) version 3.2 has a maximum bandwidth of:

A

20 Gb/s

112
Q

For an optical fiber system, the essential determinants of end-to-end bandwidth are the:

A

Transmitter and the optical fiber

113
Q

In an exclusive communication environment, the electronic access control (EAC) data is kept on its own physical network that often relies on a ____ topology.

A

Loop or star

114
Q

Modular UPS units typically use ____ technology, with each module sized to handle a portion of the overall load.

A

Line-interactive

115
Q

In the Open Systems Interconnection (OSI) Reference Model, the data is transmitted from the _ layer of the sending system to the _ layer in the receiving system.

A

Lowest; lowest

116
Q

Copper patch cords should be constructed with ____ cable.

A

Stranded

117
Q

When designing the switchboard in a direct current (dc) power system, the inverter should be located near the ____ to reduce induced electrical noise on the protected alternating current (ac) distribution.

A

ac loads

118
Q

Equipment rooms are generally considered to serve a:

A

Building, campus, tenant, or service provider

119
Q

When describing control panel standards for audiovisual (AV) systems, the IEEE 1394a standard has a maximum data transfer rate of:

A

400 Mb/s

120
Q

In most cases, interconnection is ____ in the HC (FD) for passive connections between horizontal and backbone cabling systems.

A

Not allowed

121
Q

Which one of the following project management tools Uses network diagrams to identify predecessor and successor relationships on projects?

A

Program evaluation and review technique (PERT)

122
Q

At voice frequencies, the principal elements contributing to loss and phase distortion are:

A

Conductor resistance and mutual capacitance of a cable pair

123
Q

A(n) ____ UPS topology is usually reserved for large critical facilities. This topology involves multiple large UPS units connected to output paralleling switchgear that are tied together.

A

Ring bus

124
Q

Telephone cables have a characteristic impedance that depends on frequency. In voice-band applications, an impedance of ____ is preferred for trunks.

A

600 ohms

125
Q

In a cable television distribution system, the subscriber drop is connected to the distribution system at the:

A

Tap

126
Q

Lighting may account for up to ___ percent of the electrical operation costs in a commercial building.

A

40

127
Q

Most project management (PM) software tools include the work breakdown structure (WBS) as part of the ___ chart.

A

Gantt

128
Q

In Europe, the first level of TDM is ___ with a transmission rate of ___

A

E1 , 2.048 Mb/s

129
Q

A telecommunications enclosure can be used as a replacement for a
telecommunications room.

A

False

130
Q

The MC (CD) should be close to (if not located in) the main:

A

Equipment Room

131
Q

To ensure general audibility, in the United States, NFPA 72 require that public mode fire alarm signaling achieves output levels of ___
over average ambient sound (dBA) levels.

A

15 dB

132
Q

When describing control panel standards for audiovisual (AV) systems, RS-422 uses a balanced signal with a maximum data rate of:

A

10 Mb/s

133
Q

The primary function of a telecommunications room or enclosure is to house active devices that are served by the backbone cabling.

A

False

134
Q

A spare digital alarm radio receiver (DARR) is available in the supervising station and can be switched into the place of a failed unit within ___ after the detection of failure.

A

30 seconds

135
Q

____ is the minimum acceptable performance for balanced twisted-pair network cabling.

A

Category 3 / class C

136
Q

Which one of the following is not an example of a typical internal EMI source?

A

Electric motors

137
Q

The term broadband video refers to composite baseband video and audio signals that are amplitude and frequency modulated respectively, with an RF carrier in accordance with the video and audio information that need to be conveyed.

A

True

138
Q

Reactance is the opposition to the flow of alternating current (ac) caused by:

A

Inductance and capacitance

139
Q
A

MJ Class (23 decks)

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