Brainscape's Knowledge GenomeTM

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


See full index

Andrew Comp Sys Infr Final Exam > Cabling > Flashcards

Cabling Flashcards

1
Q

What are the 2 types of copper cabling (and their acronyms)?

A

STP - Shielded Twisted Pair

UTP - Unshielded Twisted Pair

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

What is the MAC approach?

A

Moves, Additions and Changes

Simplicity in adds, moves or changes in installation configurations

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

What are the acronyms NEXT?

A

Near End Cross Talk

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

What are the acronyms FEXT?

A

Far end Cross Talk

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

What is the acronym MCC?

A

Main Cross Connect

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

What is the acronym MUTOA?

A

Multi-User Telecommunications Outlet Assembly

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

What is structured cabling?

A

A telecommunications design concept that uses a common cable type to support all applications running across it

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

When is MAC most effective?

A

When cabling a new premises

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

What 2 types of wiring configurations are used in SCS?

A

Vertical

Horizontal

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

What is meant by an evolved product?

A

Improved level of performance (Cat 5E or Cat 6)

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

What is meant by a revolutionary change?

A

An abrupt break with past technology (Copper to Fibre / Copper to Wireless)

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

When is vertical wiring used and what is the recommended cable to use?

A

To connect wiring closets between floors Single Mode Fibre recommended

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

When is vertical wiring used?

A

To connect the wiring closet to the wall jacks in each user location

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

What is the maximum length of a copper cable?

A

90m

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

What 4 things are included in the distance of horizontal wiring?

A
  1. The Cable
  2. The drop inside the wall
  3. The wall jack
  4. the patch cable from the wall to the PC
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does the acronym TIA stand for?

A

Telecommunications Industry Association

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

What does the acronym EIA stand for?

A

Electronics Industries Alliance

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

What is the commercial building telecommunication cabling standard?

A

TIA/EIA 568

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

Standards are important for 4 reasons, what are they?

A
  1. Properly installed cable will not cause connectivity failures
  2. Any trained installer can expand or repair a properly installed system
  3. Easy to retest
  4. Meets fire and electrical standards
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What does the TIA/EIA 658 standard define?

A

How to design, build and manage a structured cabling system

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

A SCS is designed in blocks with very specific performance characteristics. How are those blocks integrated?

A

In a hierarchical manner to create a unified communication system

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

What physical components are defined by TIA/EIA 568?

A

Fibre Cable
UTP Cable
STP Cable

23
Q

What is the rated channel performance for Cat 5E, Cat 6 and Cat 7?

A

Cat 5E - 100 MHz
Cat 6 - 250 MHz
Cat 7 - 600 MHz

24
Q

What is the difference between stranded and solid cable?

A

Solid is made up of one 24-gauge strand of wire

Stranded is made up of 7 - 9 strands of copper that make up one 24-gauge conductor

25
Q

A higher gauge means what?

A

A thinner wire

26
Q

What are some advantages of solid conductor cable?

A

Less Expensive
Less Attenuation
Easier to punch down

27
Q

What type of cable is recommended if the cable will have a lot of movement?

A

Stranded Cables

28
Q

What is the impedance of shielded cable?

A

150 ohms

29
Q

Twisted-Pair cabling has additional shielding to reduce what?

A

Crosstalk and other forms of EME

30
Q

Which is more expensive between STP and UTP and why?

A

STP because it has much more protection

31
Q

What physically provides the protection in a STP cable?

A

Each twisted cable is wrapped in foil

There is an inner braided copper mech contained in the outer insulating jacket

32
Q

When is STP primarily used?

A

In networking environments with high levels of EMI

33
Q

Cable carries what 2 fire ratings?

A

CSA Rating

UL Rating

34
Q

What are the 5 cautions of UTP?

A
  1. Mutual Capacitance
  2. Characteristic Impedance
  3. Attenuation
  4. NEXT
  5. Singaling Rating
35
Q

What is mutual capacitance?

A

Wires that are in close proximity causing a capacitive coupling effect between pairs

36
Q

What is attenuation?

A

The loss of signal over distance travelled

37
Q

What is near end crosstalk?

A

The measurement of a cable’s ability to reject crosstalk between pairs of wire at the near end of the circuit

38
Q

Where is crosstalk the worst?

A

Points of termination

39
Q

What is a megabit?

A 
The amount (or speed) in which data is transferred
One million bits (125KB)
40
Q

What are megahertz?

A

The analog frequency of the carrier signal used to transmit the data

41
Q

What is signaling rate and how is it measured?

A

The rate of change of the state of a digital signal Measured in Hz

42
Q

What does signaling rate affect?

A

NEXT and Attenuation

43
Q

What are the 2 types of lines?

A

Balanced & Unbalanced

44
Q

What is a balanced line?

A

An electrical cable consisting of pairs of conductors that have identical electrical characteristics with respect to each other and with respect to ground
Example: Twisted-pair cabling used in 10Base T Ethernet

45
Q

What is an unbalanced line?

A

An electrical cable in which the potential of the signal-carrying conductor is above ground while the return-path conductor is at ground potential
Example: Coaxial Cable

46
Q

Why is four pair UTP recommended in new installations?

A

It supports voice and high-speed data transmission

47
Q

What is the MCC (Main Cross Connect) and where is it usually located?

A
  1. Connection between the building backbones and 2. external connections
  2. Located on the ground floor
48
Q

What are the two cabling methods with zone cabling?

A
  1. Multi-User Telecommunications Outlet Assembly (MUTOA)

2. Consolation Point

49
Q

What company created the concept of zone cabling?

A

AMP Corporation

50
Q

What is the zone cabling concept?

A

The open office area is divided into zones, with feeder cables running to a distribution point within each zone and short cable runs to each outlet. Zones are wired with reusable, pre-terminated cable assemblies

51
Q

How many work stations are supported with zone cabling?

A

12

52
Q

What are the colour codes for a 568A cable wiring?

A 
Pin 1: white/green
Pin 2: Green
Pin 3: white/Orange
Pin 4: Blue
Pin 5: white/Blue
Pin 6: Orange
Pin 7: white/Brown
Pin 8: Brown
53
Q

What are the colour codes for a 568B cable wiring?

A 
Pin 1: white/Orange
Pin 2: Orange
Pin 3: white/Green
Pin 4: Blue
Pin 5: white/Blue
Pin 6: Green
Pin 7: white/Brown
Pin 8: Brown

Andrew Comp Sys Infr Final Exam (8 decks)

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