Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

2nd year > Semester 1 Test Review > Flashcards

Semester 1 Test Review Flashcards

1
Q

T/F The grounded conductor is the conductor that interconnects the telecommunications bonding and grounding infrastructure to the building’s power service equipment ground.

A

F - BBC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

T/F Firestops are only used for restoring the integrity of fire walls after they have been penetrated.

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

T/F A telecommunications cabling system uses standardized media and layout for backbone and horizontal cabling.

A

F - Structured cabling system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

T/F SNEXT is the undesired coupling of signal energy from a number of simultaneously transmitting pairs into a receiving pair.

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

T/F As the load current changes, the output voltage of a power supply tends to stay the same.

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

T/F When looking at print that contains scaled dimensions and written dimensions, the scaled dimensions should always be used.

A

F - written should be used

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

NICET is the responsible organization for standardization of symbols.

A

F - ANSI is responsible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

T/F The Network Interface Device is the point where a service provider’s drop wire is terminated.

A

T

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

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

a. five 4”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

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
b. transformers
c. all of the above
d. duct work

A

c. all of the above

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

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

A

d. All of the above

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

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

A

a. transformers
d. florescent lights
f. motors and generators

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A frequency increases, attenuation ____ for any given twisted pair cable.

A

increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The __________ of a coaxial cable is used to protect against EMI.

A

braided metal shield

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When installing a structured cabling system, it is important NOT to ____. _______. or ________ the cable.

A

twist, bend, kink, or flatten

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

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.

A

3”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The print that shows the location of the structure relative to the lot, road, or to other structures is the _____ print.

A

site or plot

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

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.

A

larger

smaller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

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.
A
  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
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Short Answer: What is the difference between an isometric and oblique projection?

A

Isometric uses 30 degrees off horizon.

Oblique uses 45 degrees off horizon.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Short Answer: Who are the only three people who can make or “OK” changes to job specifications?

A

architect, engineer, owner

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Short Answer: Describe the function of a cutting plane line.

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Short Answer: When print changes are made by an architect or engineer, what should be done?

A

Get an updated print, draw on as builds and toss the other one.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Short Answer: What is the general purpose of notes that relate to blueprint reading?

A

Detailed notation that tells a more detailed explanation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Short Answer: What is a Legend used for on blueprints?

A

a key for symbols

26
Q

List the four basic sketching tips.

A
  1. start and end point
  2. position arm
  3. sketch short light line
  4. darken line
27
Q

Short Answer: What is the purpose of a riser diagram?

A

Shows device quantity per floor per circuit.

28
Q

Short Answer: In an orthographic projection, there can be up to ____ standard views and ____ auxiliary views.

A

six standard views and unlimited auxiliary views

29
Q

Short Answer: Which scale, most commonly used on prints for building trades, has a scale like 1/4” or 1/8” = 1”?

A

architect (pg. 58)

30
Q

Short Answer: List the three most common types of prints, and identify which is the most commonly used by the electrical worker.

A
  1. site
  2. elevation
  3. floor
    Floor is the most common
31
Q

Short Answer: Which scale most commonly used for large pilot plans has a sale such as 1” = 50”?

A

Civil engineer

32
Q

Short Answer: What is the function of a section view?

A

A view that is used to show details not apparent on the exterior of the part - the internal features

33
Q

Short Answer: What is the function of a perspective view?

A

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.

34
Q

Short Answer: What is the function of a leader line?

A

An arrow of leader will point to the location being dimensioned when there isn’t room to write a dimension.

35
Q

Short Answer: What is the function of isometric views?

A

Shows pictoral view of an object.

36
Q

Short Answer: Which scales use the 1/2 or 1/4 size concept

A

Mechanical engineer

37
Q 
Define each standard legend notation:
MC:
ER:
TC:
DR:
WA:
S:
EF:
IC:
X:
EOL:
A 
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
38
Q

In a low lux environment, what camera type is best to use and why?

A

Black and white - needs less light

39
Q

What is a RAID and what is it for?

A

Redundant array of independent disks,

Provide protection against unrecoverable read errors, as well as against failures of whole physical drives.

40
Q

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?

A

Coax - BNC
UTP - 8P8C
Fiber - LC, sc
Wireless

41
Q

What is the main purpose for CCTV/Network surveillance cameras?

A

Asset protection

42
Q

What is the difference between a static and a dynamic IP address?

A

Static IP doesn’t change;

Dynamic IP can change.

43
Q

How can EMI and RFI problems in telecommunications cable be reduced?

A

Shield the cables, proper separation

44
Q

What is the difference between bandwidth and throughput in reference to an NIC?

A

Bandwidth is top speed available,

Throughput is the actual speed

45
Q

List the six most common causes of communication problems in order.

A 
Improper installation
EMI
RFI
Pull too hard
Bend radius
Staples in wire
46
Q

Define signal attenuation.

A

Weakening of a signal as it travels down the length of a cable.

47
Q

Define NEXT,

A

The undesired coupling of signal energy from a transmitting conductor pair into a receiving conductor pair nearest the point of transmission.

48
Q

Define PBB.

A

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.

49
Q

Define SBB.

A

Serves as a local point for banding in each distributor room.

50
Q

What is a TBB, and what are the minimum and maximum sizes for it?

A

Copper conductor extending from PBB to furthest SBB connecting all SBB to the PBB. 6AWG 750 kcmills

51
Q

What is a BBC and how should it be sized?

A

Bonding backbone conductor - equalizes ground

Same size as PBB

52
Q

Where can a person find what a print symbol means that is unknown?

A

Book of Standards

53
Q

What are the two parts of a MAC address?

A

Manufacturer ID and Serial Number

54
Q

In a telecom room, how far AFF should the lowest 110 block be installed during initial setup?

A

24”

55
Q

Why can you only terminate 24 four-pair cables on a 100-pair 110 block?

A

You will have to split the last pair.

56
Q

What is the minimum bend radius for a four-pair UTP cable when it is being pulled in?

A

Four times the diameter

57
Q

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?

A

100’ TIA Standards

NEC - no limit

58
Q

Problem: How many 300-pair 110-type terminal blocks are required to terminate 4-pair cables from 530 EO’s?

A

8

59
Q

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?

A

100/2 = 50 50/48 = 1.04A

60
Q

What is the pair color combination and binder color combination of pair number 114 in a multipair UTP cable?

A

Black/Brown

White/Slate pg. 155

61
Q

ESSAY: What are the TIA-570-C requirements for Grade 1 and Grade 2 cabling?

A

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).

62
Q

ESSAY: What are the installation requirements for a plywood backboard in a telecommunications space according to 569-D?

A

3/4” plywood, two coats of fire retardant paint, AC grade plywood, galvanized flathead screws.

2nd year (46 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions