Flashcards in Semester 1 Test Review Deck (62):
T/F The grounded conductor is the conductor that interconnects the telecommunications bonding and grounding infrastructure to the building's power service equipment ground.
F - BBC
T/F Firestops are only used for restoring the integrity of fire walls after they have been penetrated.
T/F A telecommunications cabling system uses standardized media and layout for backbone and horizontal cabling.
F - Structured cabling system
T/F SNEXT is the undesired coupling of signal energy from a number of simultaneously transmitting pairs into a receiving pair.
T/F As the load current changes, the output voltage of a power supply tends to stay the same.
T/F When looking at print that contains scaled dimensions and written dimensions, the scaled dimensions should always be used.
F - written should be used
NICET is the responsible organization for standardization of symbols.
F - ANSI is responsible
T/F The Network Interface Device is the point where a service provider's drop wire is terminated.
Multiple Choice: ANSI/TIA 569-D requires ____ sleeves for the first 40,000 sq ft of area served by the intrabuilding backbone system, plus one additional sleeve of the same size for every 40,000 sq ft after that.
a. five 4" c. four 2"
b. four 4" d. three 2"
a. five 4"
Multiple Choice: Which of the following items shall not be located, installed, pass through, or enter a telecommunications closet?
a. piping not related to the room's performance
c. all of the above
d. duct work
c. all of the above
Multiple Choice: Items such as transformers, moors and generators should not be located in or near telecommunications equipment rooms because of...
a. EMI c. Induced Noise Voltage
b. RFI d. All of the above
d. All of the above
Multiple Response: Which three of the following are sources of EMI?
a. transformers d. florescent lights
b. computers e. cell phones
c. radios f. motors and generators
d. florescent lights
f. motors and generators
A frequency increases, attenuation ____ for any given twisted pair cable.
The __________ of a coaxial cable is used to protect against EMI.
braided metal shield
When installing a structured cabling system, it is important NOT to ____. _______. or ________ the cable.
twist, bend, kink, or flatten
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.
The print that shows the location of the structure relative to the lot, road, or to other structures is the _____ print.
site or plot
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.
Matching: Match the Class of Administration to the environment.
a. Class 1 c. Class 3
b. Class 2 d. Class 4
1. Multiple buildings on multiple sites
2. A single building with several telecommunications spaces.
3. Multiple buildings, but all on the same site.
4. A building with on telecommunications space.
1. Multiple buildings on multiple sites - Class 4
2. A single building with several telecommunications spaces. - Class 2
3. Multiple buildings, but all on the same site. - Class 3
4. A building with on telecommunications space. - Class 1
Short Answer: What is the difference between an isometric and oblique projection?
Isometric uses 30 degrees off horizon.
Oblique uses 45 degrees off horizon.
Short Answer: Who are the only three people who can make or "OK" changes to job specifications?
architect, engineer, owner
Short Answer: Describe the function of a cutting plane line.
visually carve an internal section out of a drawing or feature, done to provide a larger or more readable view, indicates internal features or parts of drawings set aside for further or more detailed inspection
Short Answer: When print changes are made by an architect or engineer, what should be done?
Get an updated print, draw on as builds and toss the other one.
Short Answer: What is the general purpose of notes that relate to blueprint reading?
Detailed notation that tells a more detailed explanation.
Short Answer: What is a Legend used for on blueprints?
a key for symbols
List the four basic sketching tips.
1. start and end point
2. position arm
3. sketch short light line
4. darken line
Short Answer: What is the purpose of a riser diagram?
Shows device quantity per floor per circuit.
Short Answer: In an orthographic projection, there can be up to ____ standard views and ____ auxiliary views.
six standard views and unlimited auxiliary views
Short Answer: Which scale, most commonly used on prints for building trades, has a scale like 1/4" or 1/8" = 1"?
architect (pg. 58)
Short Answer: List the three most common types of prints, and identify which is the most commonly used by the electrical worker.
Floor is the most common
Short Answer: Which scale most commonly used for large pilot plans has a sale such as 1" = 50"?
Short Answer: What is the function of a section view?
A view that is used to show details not apparent on the exterior of the part - the internal features
Short Answer: What is the function of a perspective view?
A pictoral view of an object showing three views simultaneously that is drawn as the human eye would view the object, horizontal lines taper together.
Short Answer: What is the function of a leader line?
An arrow of leader will point to the location being dimensioned when there isn't room to write a dimension.
Short Answer: What is the function of isometric views?
Shows pictoral view of an object.
Short Answer: Which scales use the 1/2 or 1/4 size concept
Define each standard legend notation:
MC: Main Cross Connect
ER: Equipment Room
TC: Telecommunication Closet
DR: Demarc Room
WA: Work Area
S: Station Equipment
EF: Entrance Facility
IC: Inter Cross Connect
X: Cross Connect
EOL End of Line
In a low lux environment, what camera type is best to use and why?
Black and white - needs less light
What is a RAID and what is it for?
Redundant array of independent disks,
Provide protection against unrecoverable read errors, as well as against failures of whole physical drives.
What are four types of media that can be used for transmission in camera systems and what connectors are used for the cabled media types?
Coax - BNC
UTP - 8P8C
Fiber - LC, sc
What is the main purpose for CCTV/Network surveillance cameras?
What is the difference between a static and a dynamic IP address?
Static IP doesn't change;
Dynamic IP can change.
How can EMI and RFI problems in telecommunications cable be reduced?
Shield the cables, proper separation
What is the difference between bandwidth and throughput in reference to an NIC?
Bandwidth is top speed available,
Throughput is the actual speed
List the six most common causes of communication problems in order.
Pull too hard
Staples in wire
Define signal attenuation.
Weakening of a signal as it travels down the length of a cable.
The undesired coupling of signal energy from a transmitting conductor pair into a receiving conductor pair nearest the point of transmission.
A busbar placed in a convenient and accessible location and banded by means of the banding conductor for telecommunication to the service equipment (power) ground.
Serves as a local point for banding in each distributor room.
What is a TBB, and what are the minimum and maximum sizes for it?
Copper conductor extending from PBB to furthest SBB connecting all SBB to the PBB. 6AWG 750 kcmills
What is a BBC and how should it be sized?
Bonding backbone conductor - equalizes ground
Same size as PBB
Where can a person find what a print symbol means that is unknown?
Book of Standards
What are the two parts of a MAC address?
Manufacturer ID and Serial Number
In a telecom room, how far AFF should the lowest 110 block be installed during initial setup?
Why can you only terminate 24 four-pair cables on a 100-pair 110 block?
You will have to split the last pair.
What is the minimum bend radius for a four-pair UTP cable when it is being pulled in?
Four times the diameter
Under he appropriate TIA standard, what is the maximum length for a section of conduit without a pull box, and what is the maximum length according to the NEC?
100' TIA Standards
NEC - no limit
Problem: How many 300-pair 110-type terminal blocks are required to terminate 4-pair cables from 530 EO's?
Problem: If a new version of PoE were to come out that was rated to operate at 100 watts over two pairs, what would be the maximum expected current in one of those circuits?
100/2 = 50 50/48 = 1.04A
What is the pair color combination and binder color combination of pair number 114 in a multipair UTP cable?
White/Slate pg. 155
ESSAY: What are the TIA-570-C requirements for Grade 1 and Grade 2 cabling?
Grade 1 - Cat 5 + 1 coax
Recognized media for Grade 1 systems includes balanced twisted-pair and coaxial cabling. A minimum of one 4-pair category 5e or higher rate balanced twisted-pair channel and one 75-ohm coaxial channel shall be available at each telecommunications outlet and the distribution device (DD).
Grade 2 - Cat 5e+2 coax
Recognized media for Grade 2 systems balanced twisted-pair, coaxial, and optical fiber cabling. A minimum of of two category 5e or higher rate balanced twisted-pair channels, two 75-ohm 689 coaxial channels, and optional 2-fiber optical fiber cabling shall be available at each telecommunications outlet and the distribution device (DD).