Fiber Flashcards
1
Q
62.5/125-µm multimode cable (OM1) attenuation at 850nm
A
3.5
2
Q
62.5/125-µm multimode cable (OM1) attenuation at 1300nm
A
1.5
3
Q
62.5/125-µm multimode cable (OM1) bandwidth MHz-km at 850nm
A
200 (OFL)
4
Q
62.5/125-µm multimode cable (OM1) bandwidth MHz-km at 1300nm
A
500
5
Q
50/125-µm multimode cable (OM2) bandwidth MHz-km at 850nm
A
500 (OFL)
6
Q
50/125-µm multimode cable (OM2) bandwidth MHz-km at 1300nm
A
500
7
Q
50/125-µm multimode cable (OM2) attenuation at 850nm
A
3.5
8
Q
50/125-µm multimode cable (OM2) attenuation at 1300nm
A
1.5
9
Q
50/125-µm multimode cable (OM3) attenuation at 850nm
A
3.5
10
Q
50/125-µm multimode cable (OM3) attenuation at 1300nm
A
1.5
11
Q
50/125-µm multimode cable (OM3) bandwidth at 850nm
A
1500 (OFL)
2000 (EMB)
12
Q
50/125-µm multimode cable (OM3) bandwidth at 1300nm
A
500
13
Q
50/125-µm multimode cable (OM4) attenuation at 850nm
A
3.5
14
Q
50/125-µm multimode cable (OM4) attenuation at 1300nm
A
1.5
15
Q
50/125-µm multimode cable (OM4) bandwidth at 850nm
A
3500 (OFL)
4700 (EMB)
16
Q
50/125-µm multimode cable (OM4) bandwidth at 1300nm
A
500
17
Q
50/125-µm multimode cable (OM5) attenuation at 850/880nm
A
3.0
18
Q
50/125-µm multimode cable (OM5) attenuation at 910/940nm
A
3.0
19
Q
50/125-µm multimode cable (OM5) bandwidth at 850/880nm
A
3500 (OFL)
4700 (EMB) at 850
20
Q
50/125-µm multimode cable (OM5) bandwidth at 910/940nm
A
3500 (OFL)
4700 (EMB) at 850
21
Q
Singlemode cable (OS1) (grandfathered) attenuation at 1310 nm
A
1.0
22
Q
Singlemode cable (OS1) (grandfathered) attenuation at 1550 nm
A
1.0
23
Q
Singlemode cable (OS1a) attenuation at 1310 nm
A
1.0
24
Q
Singlemode cable (OS1a) attenuation at 1383 nm
A
1.0
25
Singlemode cable (OS1a) attenuation at 1550 nm
1.0
26
Singlemode cable (OS2) attenuation at 1310 nm
0.4
27
Singlemode cable (OS2) attenuation at 1383 nm
0.4
28
Singlemode cable (OS2) attenuation at 1550 nm
0.4
29
Singlemode cable bandwidth, at any wavelength
N/A
30
Distance supported by OM1 at 100Mb speed?
550m, 1800 ft
31
Distance supported by OM1 at 1Gb speed?
220m, 722 ft
32
Distance supported by OM1 at 10Gb speed?
33m, 108 ft
33
Distance supported by OM2 at 100Mb speed?
550m, 1800 ft
34
Distance supported by OM2 at 1Gb speed?
550m, 1800 ft
35
Distance supported by OM2 at 10Gb speed?
82m, 269 ft
36
Distance supported by OM2 at 40Gb speed?
N/A
37
Distance supported by OM1 at 40Gb speed?
N/A
38
Distance supported by OM2 at 100Gb speed?
N/A
39
Distance supported by OM1 at 100Gb speed?
N/A
40
Distance supported by OM3 at 100Gb speed?
100m, 328 ft
41
Distance supported by OM3 at 40Gb speed?
100m, 328 ft
42
Distance supported by OM3 at 10Gb speed?
300m, 984 ft
43
Distance supported by OM3 at 1Gb speed?
550m, 1800 ft
44
Distance supported by OM3 at 100Mb speed?
550m, 1800 ft
45
Distance supported by OM4 at 100Mb speed?
550m, 1800 ft
46
Distance supported by OM4 at 1Gb speed?
550m, 1800 ft
47
Distance supported by OM4 at 10Gb speed?
550m, 1800 ft
48
Distance supported by OM4 at 40Gb speed?
150m, 500 ft
49
Distance supported by OM4 at 100Gb speed?
150m, 500 ft
50
Distance supported by OM5 at 100Mb speed?
N/A
51
Distance supported by OM5 at 1Gb speed?
N/A
52
Distance supported by OM5 at 10Gb speed?
550m, 1800 ft
53
Distance supported by OM5 at 40Gb speed?
150m, 500 ft
54
Distance supported by OM5 at 100Gb speed?
150m, 500 ft
55
Distance supported by singlemode at 100Gb speed?
10,000m, 32,800ft
56
Distance supported by singlemode at 40Gb speed?
10,000m, 32,800ft
57
Distance supported by singlemode at 10Gb speed?
10,000m, 32,800ft
58
Distance supported by singlemode at 1Gb speed?
10,000m, 32,800ft
59
Distance supported by singlemode at 100Mb speed?
N/A
60
For multimode testing, light source or OTDR must operate within range of 850 ± __nm or 1300 ± __ nm.
850 ± 30nm or 1300 ± 20nm
61
For singlemode testing, light source or OTDR must operate within range of 1310 ± __nm or 1550 ± __ nm.
1310 ± 10 nm or 1550 ± 20nm
62
Maximum channel attenuation for IEEE 802.3 EPON
20dB
63
Maximum channel attenuation for IEEE 802.3av 10G-EPON
29dB
64
Maximum channel attenuation for ITU G.984 GPON (B+ Optics)
28dB
65
Maximum channel attenuation for ITU G.984 GPON (C+ Optics)
32dB
66
Maximum channel attenuation for ITU G.987 10GPON
31dB
67
Maximum distance supported for ITU G.984 GPON (B+ Optics)
20.1 km, 12.5 mi
68
Maximum distance supported for for ITU G.984 GPON (C+ Optics)
60 km, 37 mi
69
Maximum distance supported for for ITU G.987 10GPON
40 km, 25 mi
70
Maximum distance supported for for IEEE 802.3av 10G-EPON
20.1 km, 12.5 mi
71
Maximum distance supported for for IEEE 802.3 EPON
10 km, 6.2 mi
72
What is the dB loss from mechanical splices in multimode and singlemode fiber?
0.3 dB
73
What is the dB loss from fusion splices in multimode fiber?
0.1 dB
74
What is the dB loss from fusion splices in singlemode fiber?
0.05 dB
75
How many fiber strands does 40GB use?
2 or 8
76
How many fiber strands does 100GB use?
4, 8, or 20
77
How many fiber strands does 200GB use?
8
78
How many fiber strands does 50GB use?
2
79
How many fiber strands does 400GB use?
8 or 32
80
Multimode optical fiber is best suited for premises applications where links are less than ____ for data rates of 155 Mb/s or less.
2000m, 6562 ft
81
Multimode optical fiber is best suited for premises applications where links are less than ____ for data rates of 1 Gb/s or less.
550m, 1804 ft
82
Multimode optical fiber is best suited for premises applications where links are less than ____ for data rates of 10Gb/s or less.
300m, 984 ft
83
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.
100m, 328 ft
84
How many connection points are allowed in the permanent link?
3
85
How many connection points are allowed in the channel model?
4
86
How many levels of cross-connections are allowed in a backbone distribution system?
2
87
Connections between any two HCs (FDs) shall not pass through more than _ cross-connections.
3
88
What band is very low frequency?
Audio, 3-30 kHz
89
What band is low frequency?
Audio, 30-300 kHz
90
What band is medium frequency?
Radio (RF), 300-3000 kHz
91
What band is high frequency?
Radio (RF), 3-30 MHz
92
What band is very high frequency?
Video (TV) and Radio (RF), 30-300 MHz
93
What band is ultra high frequency?
Video (TV) and Radio (RF), 300-3000 MHz
94
What band is community antenna TV?
Video (TV), 54-1002 MHz
95
What band is super high frequency?
Radar, 3-30 GHz
96
What band is extremely high frequency?
Radar, 30-300 GHz
97
What is the minimum space for first five tenants in a Grade 1 multi-welling unit CTR?
14.5 in wide, 24 in high
98
What is the minimum space for first five tenants in a Grade 2 multi-welling unit CTR?
30.5 in wide, 24 in high
99
What is the minimum additional space per tenant after the first five tenants in a Grade 1 multi-welling unit CTR?
50 in²
100
What is the minimum additional space per tenant after the first five tenants in a Grade 2 multi-welling unit CTR?
100 in²
101
What is the minimum telecom room size for a serving area of 5000 ft² or less?
10 ft by 8 ft
102
What is the minimum telecom room size for a serving area between 5000 ft² and 8000 ft²?
10 ft by 9 ft
103
What is the minimum telecom room size for a serving area between 8000 ft² and 10,000 ft²?
10 ft by 11 ft
104
What is the maximum serving area size by a wall cabinet, self contained cabinet, or enclosed cabinet?
1,000 ft²
105
What is the maximum serving area size by a shallow room?
5,000 ft²
106
What type of cabling facility may be housed in a telecommunications room (TR)?
Floor, building, or campus distributor
107
Radiating coaxial cabling antennas offer wide bandwidth for combined systems, with operating frequencies ranging from ___ to more than ___
70 MHz; 2.4 GHz
108
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?
Composite video
109
Vacancy sensors for lighting control save ___ energy than occupancy sensors for lighting control.
More
110
Each port on a network switch represents a different ____ domain.
Collision
111
When describing control protocol standards for audiovisual (AV) systems, universal serial bus (USB) version 3.2 has a maximum bandwidth of:
20 Gb/s
112
For an optical fiber system, the essential determinants of end-to-end bandwidth are the:
Transmitter and the optical fiber
113
In an exclusive communication environment, the electronic access control (EAC) data is kept on its own physical network that often relies on a ____ topology.
Loop or star
114
Modular UPS units typically use ____ technology, with each module sized to handle a portion of the overall load.
Line-interactive
115
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.
Lowest; lowest
116
Copper patch cords should be constructed with ____ cable.
Stranded
117
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.
ac loads
118
Equipment rooms are generally considered to serve a:
Building, campus, tenant, or service provider
119
When describing control panel standards for audiovisual (AV) systems, the IEEE 1394a standard has a maximum data transfer rate of:
400 Mb/s
120
In most cases, interconnection is ____ in the HC (FD) for passive connections between horizontal and backbone cabling systems.
Not allowed
121
Which one of the following project management tools Uses network diagrams to identify predecessor and successor relationships on projects?
Program evaluation and review technique (PERT)
122
At voice frequencies, the principal elements contributing to loss and phase distortion are:
Conductor resistance and mutual capacitance of a cable pair
123
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.
Ring bus
124
Telephone cables have a characteristic impedance that depends on frequency. In voice-band applications, an impedance of ____ is preferred for trunks.
600 ohms
125
In a cable television distribution system, the subscriber drop is connected to the distribution system at the:
Tap
126
Lighting may account for up to ___ percent of the electrical operation costs in a commercial building.
40
127
Most project management (PM) software tools include the work breakdown structure (WBS) as part of the ___ chart.
Gantt
128
In Europe, the first level of TDM is ___ with a transmission rate of ___
E1 , 2.048 Mb/s
129
A telecommunications enclosure can be used as a replacement for a
telecommunications room.
False
130
The MC (CD) should be close to (if not located in) the main:
Equipment Room
131
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.
15 dB
132
When describing control panel standards for audiovisual (AV) systems, RS-422 uses a balanced signal with a maximum data rate of:
10 Mb/s
133
The primary function of a telecommunications room or enclosure is to house active devices that are served by the backbone cabling.
False
134
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.
30 seconds
135
____ is the minimum acceptable performance for balanced twisted-pair network cabling.
Category 3 / class C
136
Which one of the following is not an example of a typical internal EMI source?
Electric motors
137
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.
True
138
Reactance is the opposition to the flow of alternating current (ac) caused by:
Inductance and capacitance
139
