Midterm Flashcards
1
Q
what are 4 types of media that can be used for transmission in camera systems
A
coax
fiber
twisted pair
wireless
2
Q
in an orthographic projection there can be up to _____ standard views and _______ of auxiliary views
A
6
any number
3
Q
what is a RAID and what is it used for
A
Redundant array of independent disks
multiple backups in case one becomes corrupted
4
Q
Category 4 transmission characteristics
A
Category is considered legacy
5
Q
Definitions
A
NFPA 70 article 100
6
Q
ANSI/TIA 569-D requires __________ sleeves for the first 40,000 square feet of area served by the intrabuilding backbone system, plus one additional sleeve of the same size for every 40,000 square feet after that
A
five four inch sleeves
7
Q
Fire stops are used for restoring the integrity of _________ in fire rated materials
A
penetrations
8
Q
570-C
A
Residential Telecommunications infrastructure standard
9
Q
Name three sources of EMI
A
transformers
florescent lights
motors and generators
10
Q
what is the max bend radius for a four pair UTP cable when it is being pulled
A
4 times cable diameter
11
Q
name 4 items that shall not be located, installed, pass through, or enter a telecommunications closet
A
piping not related to the rooms purpose
transformers
motors
generators
12
Q
as frequency increases _______ increases
A
attenuation
13
Q
what are the TIA-570-c requirements for grade 2 cabling
A
two cat 5e or higher and two 72 ohm coax cable
fiber is optional
14
Q
How can EMI and RFI problems in telecommunication cables be reduced
A
use a shielded cable and proper separation from EMI producing objects and your telecommunications cables
15
Q
what scale uses the 1/2 or 1/4 size concept
A
mechanical engineers
16
Q
what is the most common type of print for low voltage construction
A
floor plan
17
Q
a ______ cabling system uses standardized media and layout for backbone and horizontal cabling
A
Structured
18
Q
signal is measured in _____
A
Db
19
Q
NFPA 70 article 250
A
Grounding and bonding
20
Q
the ______ of a coaxial cable is used to protect against EMI
A
Braided shield
21
Q
the print that shows the location of the structure relative to the lot, road, or to other structures is the
A
site plan or plot plan
22
Q
what is the difference between a static and a dynamic IP address
A
static does not change if node moves to another network while dynamic IP’s are randomly assigned by the computer
23
Q
what is standard POE voltage
A
48 VDC
24
Q
list the 5 most common causes of communication problems
A
poor termination EMI and RFI bend radius pull too hard and stretch cable staple wires to hard
25
what is a TBB and what are the minimum and maximum sizes for it
telecommunications bonding backbone - connects the primary busbar to the secondary busbar
6AWG - 750Kcmill
26
Telecommunications pathways and spaces
569-D
27
secondary bonding busbar
a busbar placed in each distribution room. bonds all equipment in Distribution room to Ground
28
ER
Equipment room
29
what are the installation requirements for plywood backboards in a telecommunications space according to 569-d
```
3/4 in AC rated plywood size 8' by 4'
galvanized, stainless or zink coated fasteners
2 coats of fire rated paint
at least one wall covered
6 in above finished floor
```
30
Commercial Building grounding (Earthing) and bonding requirements for telecommunications
607-C
31
civil engineers plot plans most often use a ratio such as
1 inch equals 50 feet
32
which scale uses measurements like 1/4" or 1/8" equals 1 foot
architects scale
33
what is the general purpose of notes that relate to blueprint reading
provide additional information that is difficult to determine from drawing
34
what is the main purpose for CCTV/Network surveillance cameras
protection of assets, people, equipment, and reputation
35
environmental administration class 1
Single building single equipment room no Distribution Room
36
fire stops are used for restoring the integrity of ________ walls, floors, and other ________ penetrations
fire rated, fire rated
37
general requirements for wiring methods and materials
NFPA 70 article 300
38
name 3 coax connector types
F
BNC
N
39
list 3 of the most common types of prints for Low voltage construction
floor plan
site plan
elevations
40
569-D
Telecommunications pathways and spaces
41
607-C
Commercial Building grounding (Earthing) and bonding requirements for telecommunications
42
items such as transformers, motors, and generators should not be located in or near telecommunications equipment rooms because of
EMI
RFI
Induced noise voltage
43
When installing a structured cabling system it is important not to ______, _______, or ________ the cable
twist
Kink
Flatten
44
PSNEXT is the
undesired coupling of signal energy from a number of simultaneously transmitting pairs into a receiving pair
45
in a telecom room how far AFF should the lowest 110 block be installed during initial setup
24 inches
46
optical fiber cabling standard
568-C.3
47
if a new version of PoE were to come out that was rated to operate at 100 watts over two pairs what would the maximum expected current be in one of those circuits
```
100/2 = 50 watts per pair
I = P/E = 50/48 = 1.04 amps
```
48
Electrical metallic tubing: Type EMT
NFPA 70 article 358
49
community antenna television and radio distribution systems
NFPA 70 article 820
50
Grounding and bonding
NFPA 70 article 250
51
what are the two parts of a MAC address
hardware manufacture ID
| device individual ID number
52
what scale, most often used for large plot plans, uses a ratio such as 1 inch equals 50 feet
civil engineers
53
mechanical engineers scale uses
the 1/2 or 1/4 size concept
54
the braided shield of a coaxial cable is used to protect against ______.
EMI
55
Who are the only three people that can make, or OK changes to job specifications
engineer, owner, architects
56
The ________ is the point where a service provider's drop wire is terminated
NID - Network Interface Device
57
architects scale uses measurements such as _____
1/4" or 1/8" equals 1 foot
58
What is the function of a perspective view
the spacial perspectives are more ascetically pleasing and work well for sales presentations
59
class 1, class 2, and class 3 remote control, signaling and power limited circuits
NFPA 70 article 725
60
why can you only terminate 24 pair cables on a 100 pair 110 block
so you don't have to split the last pair.
| 4 pin clips wont line up and 5 pin clips color scheme will be off
61
The _______ is the conductor that interconnects the telecommunications bonding and grounding infrastructure to the building's power service equipment ground
Telecommunications bonding conductor
62
Under appropriate TIA standard what is the maximum length for a section of conduit without a pull box
100 ft
63
568-D
Generic Telecommunications cabling for customer premises
64
568-D.1
commercial building telecommunications cabling standard
65
MC
Main cross connect
66
what is a BBC
backbone bonding conductor - bonds multiple TBBs together
| interconnects telecommunications bonding backbones within a building
67
Category 5e transmission characteristics
1-100MHz
68
Category 5 transmission characteristics
Category is considered legacy
69
define signal attenuation
weakening of signal as it travels the length of the cable
70
what colors go to what pin number for the 568A 8P8C connector
```
Pin 1 - white green
Pin 2 - Green white
Pin 3 - White orange
Pin 4 - Blue white
Pin 5 - white blue
Pin 6 - orange white
Pin 7 - White Brown
Pin 8 - Brown white
```
71
X
cross connect
72
what is the function of a leader line
point to a specific item with a detailed note
73
NFPA 70 article 725
class 1, class 2, and class 3 remote control, signaling and power limited circuits
74
what are the TIA-570-c requirements for grade 1 cabling
one cat 5e or higher and one 72 ohm coax cable
75
NFPA 70 article 358
Electrical metallic tubing: Type EMT
76
Customer-Owned outside plant telecommunications cabling standard
758-B
77
Under appropriate NEC standard what is the maximum length for a section of conduit without a pull box
no limit
78
DR
Distribution room
79
with regard to camera lenses the _______ the MM number the narrower the field of view and the _______ the MM number the wider the field of view
larger
| smaller
80
what is the function of a section view
a part of a scaled drawing, drawn to a larger scale to provide additional information and show more detail
81
568-C.3
optical fiber cabling standard
82
when prints changes are made by an architect or engineer, what should be done?
get new prints
transfer as builds
disgard old print
83
in a low lux environment , what camera type is best and why?
black and white.
| black and white cameras require less light to create an accurate image
84
environmental administration class 3
a campus with more than one building
85
how is a backbone bonding conductor sized
should be same size as largest TB it is connected to
86
what are the 4 basic sketching tips
1 - locate starting and finishing points for the desired line
2 - position your arm by making trial movements without drawing an actual line
3 - use a series of short lines between starting and terminal points
4 - after your line is correct darken it to a uniform weight or thickness
87
what colors go to what pin number for the 568B 8P8C connector
```
Pin 1 - white orange
Pin 2 - orange white
Pin 3 - White Green
Pin 4 - Blue white
Pin 5 - white blue
Pin 6 - green white
Pin 7 - white brown
Pin 8 - brown white
```
88
environmental administration class 2
Single building with one ER and one or more distribution Rooms
89
communications circuits
NFPA 70 article 800
90
606-B
administration for commercial telecommunications infrastructure
91
define NEXT
worst case pair to pair cross talk
undesired coupling of energy from the transmitting conductor pair into the receiving conductor pair
92
what is the purpose of a riser diagram
show the floor by floor relationship of the electrical distribution system.
show quantity of devices per floor and per circuit
93
Residential Telecommunications infrastructure standard
570-C
94
When looking at a print that contains written dimensions and scaled dimensions: what dimensions should you use
written
95
commercial building telecommunications cabling standard
568-D.1
96
Category 3 transmission characteristics
1-16 MHz
97
______ is the responsible organization for standardization of symbols
ANSI - American National standards Institude
98
oblique projection
the front face is to the surface and the angles are usually at 45 degrees
99
balanced twisted pair cabling components standard
568-C.2
100
isometric projection
shows 3 object views together as they would appear tot he human eye, the corner is at the front of the drawings and the angles are at 30 degrees
101
EF
entrance facility
102
administration for commercial telecommunications infrastructure
606-B
103
as _______ increases attenuation increases
frequency
104
NFPA 70 article 100
Definitions
105
Describe the function of a cutting plane line
visually cut out a section for further inspection
106
568-C.2
balanced twisted pair cabling components standard
107
what is the function of isometric views
show 3 objects together as they would appear to the human eye
semi-pictorial view of a object
108
environmental administration class 4
multiple buildings on multiple sites
109
WA
work area
110
what is a legend used for on blue prints
determine what a symbol means, provide clarification on nonstandard or job specific information
111
NFPA 70 article 800
communications circuits
112
where can a person find what a print symbol means that is unknown
legend
book of standards
symbol library
113
Category 6 transmission characteristics
1-250 MHz
114
how many 300 pair 110 type terminals blocks are required to terminate 4 pair cables from 530 EOs
530/72 = 7.36 so 8 required
115
IC
inter cross connect
116
Lux and Foot candle
unit of measure for light
1 foot candle equals 10 lux
117
Generic Telecommunications cabling for customer premises
568-D
118
PBB
Primary bonding bushbar - located in a convenient and easily accessible location and bonded to the power service equipment room
119
NFPA 70 article 820
community antenna television and radio distribution systems
120
Category 6A transmission characteristics
1-500 MHz
121
Category 8 transmission characteristics
1-2000 MHz
122
if there are multiple telecommunications rooms located on one floor they must be connected by a _______ conduit or equivalent pathway at a minimum per ANSI/TIA 569 -D
3 inch
123
what is the difference between bandwidth and throughput in reference to a NIC
bandwidth is how much data that can be transmitted at a given time where as throughput is actual measured speed
124
as the load current changes, the __________ of a power supply tends to stay the same
output voltage
125
ANSI/TIA 569-D requires five four inch sleeves for the first _____ square feet of area served by the intrabuilding backbone system, plus one additional sleeve of the same size for every ______ square feet after that
40,000
40,000
126
NFPA 70 article 300
general requirements for wiring methods and materials
127
S
station equipment
128
in an ______ there can be up to 6 standard views and any number of auxiliary views
orthographic projection
129
a structured cabling system uses standardized media and layout for _______ and ________ cabling
backbone and horizontal
130
758-B
Customer-Owned outside plant telecommunications cabling standard
131
what is the twisted pair connector type
8P8C
132
what is the pair color combination and binder color combination of pair number 114 in a multi-pair UTP cable
black brown pair
| white slate binder
133
EOL
End of Line
134
name 3 fiber connector types
SC
ST
LC
