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Network+ > Media and Cabling Distribution > Flashcards

Media and Cabling Distribution Flashcards

1
Q

What are the three categories of media?

A

Copper, fibre optic, wireless

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2
Q

Which type of media?
- Inner
> Insulated conductor or center wire passes data
- Outer
> Braided metal shield used to help shield and protect the data transmission
> Provides EMI resistance due to shielding

A

Coaxial Cable (Coax) / copper

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3
Q

What are the layers of a Coaxial cable?

A

Centre core, dielectric insulator, metallic shield, plastic jacket

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4
Q

What are the two types of Coaxial cables?

A

RG-6 (thicker), RG-59 (thinner)

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5
Q

RG-6 is a type of what kind media?

A

Coaxial cable (copper)

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6
Q

RG-59 is a type of what kind of media?

A

Coaxial cable (copper)

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7
Q

What type of cable is commonly used by local cable companies to connect individual homes?

A

RG-6

Coaxial cable, copper

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8
Q

What type of cable is used to carry composite video between two nearby devices? Example: TV to the cable box

A

RG-59 (Coaxial cable, copper)

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9
Q

What are the two types of Coaxial connectors?

A

BNC, F-connector

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10
Q

What type of Coaxial cable was used for 10BASE2 Ethernet networks?

A

BNC connector

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11
Q

What type of Coaxial connector is typically used for cable TV and cable modem connections?

A

F-connector

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12
Q 
What type of cable?
- Most popular physical LAN media type
- Eight individually insulated strands of copper wire inside each cable
- Each pair twisted together to reduce EMI
     > Tight twists = less EMI
- Types:
     > Unshielded
     > Shielded
A

Twisted Pair Cable

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13
Q
  • Number of twists determines how much EMI can be blocked
    > CAT 6 has more twists per inch than CAT 5
  • Cheaper
  • Media of choice in most LANs
A

Unshielded twisted pair (UTP)

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14
Q
  • Wires are twisted in pairs and surrounded in a metallic shielding to minimize EMI
  • Outer shielding minimizes EMI, but makes it more expensive
A

Shielded twisted pair (STP)

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15
Q

What are the types of twisted pair connectors?

A

RJ-45, RJ-11, DB-9 or DB-25 (RS-232)

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16
Q

Which twisted pair connector?

  • 8-pin connector in Ethernet networks
  • Most Ethernet use only 4-pins
A

RJ-45

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17
Q

Which twisted pair connector?

  • 6-pin connector
  • Commonly only 2 or 4 pins are used
  • Commonly found in telephone systems
A

RJ-11

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18
Q

Which twisted pair connector?

  • 9-pin or 25-pin D-subminiature
  • Used for asynchronous serial communications and connecting to an external modem
A

DB-9 or DB-25 (RS-232)

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19
Q

What are the twisted-pair cable throughputs?

A
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20
Q

What type of cable?
- Both ends of the cable have matching pin outs
- T-568B is the preferred standard for wiring a building if no pre-existing pattern is used
- Data Terminating Equipment (DTE) to Data Communications Equipment (DCE)
> Computer to Switch
> Router to modem

A

Straight-through patch cables

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21
Q

What is the preferred standard for wiring a building if no pre-existing pattern is used?

A

T-568B

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22
Q

What type of cable?
- Send and receive pins of the cable are swapped in the end pin outs
- Used to connect a workstation to a workstation
- Used to connect a switch to a switch
> Not required if a switch supports MDIX

A

Crossover cables

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23
Q
  • TIA/EIA-568A and TIA/EIA-568B are standard

- Orange and green pairs swap

A

Pinouts (568A/568B)

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24
Q

What type of cable?
- Special UTP/STP cable that has a fire-retardant outer insulator
> Minimizes dangerous fumes if cable on fire
> Safe for use in ceilings, walls, and raised floors

A

Plenum cable

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25
Q

What type of cable?

  • Also known as PVC
  • Normal UTP/STP rated cable
  • Cannot be used in raised floors, ceiling, or walls
A

Non-plenum cable

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26
Q

What are two examples of DTE (data terminating equipment) to DCE (data communications equipment)?

A
  • Computer to switch

- Router to modem

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27
Q
  • Automated way to electronically simulate a crossover connector. i.e. if your switch doesn’t support this, you have to use a crossover cable to connect to another switch
A

MDIX

28
Q

Pinouts (568A/568B) for a crossover cable

A
29
Q

Which type of media?
- Uses light from an LED or laser to transmit information through a glass fiber
> Immune to EMI
> Uses light instead of electricity
- Greater range (many miles)
- Greater data-carrying capacity (measured in Tbps)

A

Fibre optic cables

30
Q

Benefits of which type of cable?

  • Greater range (many miles)
  • Greater data-carrying capacity (measured in Tbps)
A

Fibre optic cable

31
Q

What are the two types of fibre optic cables?

A
  • Multimode fibre (MMF)

- Single-mode fibre (SMF)

32
Q 
Which type of cable?
- Shorter distances
- Larger core size allows for multiple modes of travel for the light signal
- Core size: 6.25 microns
- Common uses:
     > Routers to switches
     > Switches to switches
     > Servers to switches
A

Multimode fibre (MMF)

33
Q 
Which type of cable?
- Longer distances
- Smaller core size allows for only a single mode of travel for the light signal
- Core size: 10 microns
- Common uses:
     > Routers to switches
     > Switches to switches
A

Single-mode fibre (SMF)

34
Q

What is the core size of single-mode fibre cable?

A

10 microns

35
Q

What is the core size of multimode fibre cable?

A

62.5 microns

36
Q

What are the four types of fibre optic connectors?

A

SC - subscriber connector
ST - straight tip connector
LC - lucent connector
MTRJ - mechanical transfer-registered jack

37
Q

Which connector goes with which?

A

UPC - ultra physical contact connector - goes with MTRJ connector
APC - angled physical contact connector - goes with SC connector

38
Q

The following are advantages of which type of cable?

  • Higher bandwidth
  • Longer distances
  • Immune to EMI
  • Better security
A

Fibre optic

39
Q

The following are advantages of which type of cable?

  • Less expensive
  • Easy to install
  • Inexpensive toola
A

Copper

40
Q
  • Used to convert media from one format to another
  • Layer 1 device
    > Physical conversion of signal only
  • Examples:
    > Ethernet to Fibre Optic
    > Fibre optic to Ethernet
    > Coaxial to fibre
    > Fibre to coaxial
A

Media converters

41
Q

What is a device that sends and receives data?

A

Transceiver

42
Q

Which type of transceiver?

  • Devices take turns communicating
  • Known as half-duplex
A

Bi-directional

43
Q

Which type of transceiver?

  • Devices take turns communicating
  • Known as bi-directional
A

Half-duplex

44
Q

Which type of transceiver?

- Devices can both communicate at the same time

A

(Full) Duplex

45
Q

Which type of transceiver?

- Standard, hot-pluggable gigabit Ethernet transceiver (copper or fibre)

A

GBIC

46
Q

Which type of transceiver?

  • Compact, hot-pluggable optical module transceiver
  • Support up to 4.25 Gbps
  • Known as Mini-GBIC
A

Small Form-Factor Pluggable (SFP)

47
Q

Which type of transceiver?

  • Enhanced SFP
  • Support up to 16 Gbps
A

SFP+

48
Q

Which type of transceiver?

  • Compact, hot-pluggable optical module transceiver
  • Support up to 4.25 Gbps
  • Known as SFP
A

Mini-GBIC

49
Q

Which type of transceiver?

  • Compact, hot-pluggable optical module transceiver
  • Supports up to 100 Gbps
A

Quad Small Form-Factor Pluggable (QSFP)

50
Q
  • Use an organized system that is hierarchical
  • Components:
    > Entrance facilities
    > MDF - main distribution frame
    > Cross-connect facilities
    > IDF - intermediate distribution frame
    > Backbone wiring
    > Telecommunications closet
    > Horizontal wiring
    > Patch panels
    > Work area
A

Cable distribution system

51
Q

What are the two types of Punch Down Blocks?

A

66 block, 110 block

52
Q

66 block and 110 block are two types of what?

A

Punch down blocks

53
Q 
Which punch down block?
- Used for phones and older LAN wiring
- Causes crosstalk due to proximity of cables
- Bad choice for higher speed LAN wiring
     > Do not use for CAT 5 or above
A

66 block

54
Q

Which punch down block?
- Used for higher-speed network wiring
> Required for CAT 5 or above cabling

A

110 block

55
Q

Which type of patch panel?

  • Device with jacks to connect wiring from the jack to a network switch in a flexible manner
  • Back has punch downs like a 110 block to connect wiring to wall jacks in building
  • Front has RJ-45 jacks
A

Copper patch panel

56
Q

Which type of patch panel?

  • Connect fibre jacks throughout building to a single patch panel in network closet
  • Front uses patch cables to connect to different wall jacks and switch ports
A

Fibre patch panel

57
Q
  • Use on cable distribution network is to find breaks in the wire or to identify and document the network
A

Fox and hound / Toner probe

58
Q

Which component of the cable distribution system?

- Where the cable enters the building, i.e. from your telecom provider, like fibre or cable connection

A

Entrance facility

59
Q

Which component of the cable distribution system?

- Goes to the main communications centre

A

Main distribution frame

60
Q

Which component of the cable distribution system?

- e.g. vertical going from first floor up to second floor

A

Cross-connect facilities

61
Q

Which component of the cable distribution system?
- e.g. sitting on a second floor telecommunications closet which is the facility that is going to take care of that particular floor

A

Intermediate distribution frame

62
Q

Which component of the cable distribution system?

- e.g. going across either horizontally or vertically throughout the networks

A

Backbone wiring

63
Q

Which component of the cable distribution system?

- Where the patch panels, switches, and routers reside

A

Telecommunications closet

64
Q

Which component of the cable distribution system?
- Goes out from the telecommunications closet and the intermediate distribution frame out to work centres to the jacks that are in the walls

A

Horizontal wiring

65
Q

Which component of the cable distribution system?

  • Connect horizontal wires back to this, which can then be pushed into switches
  • All of this sits inside the telecommunications closet
A

Patch panels

66
Q

Which component of the cable distribution system?

- Where the end user is going to be operating

A

Work area

67
Q

Where are punch down blocks located?

A

Either in main or intermediate distribution frame

Network+ (15 decks)

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