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Network+ N10-007 > Cabling and Topology > Flashcards

Cabling and Topology Flashcards

1
Q

What is a topology?

A

Ways of connecting computers together

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2
Q

What is a network topology?

A

Way that cables and other pieces of hardware connect to one another

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3
Q

What are the 3 historical topologies?

A
  1. Bus
  2. Ring
  3. Star
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4
Q

What are the two modern topologies?

A
  1. Hybrid

2. Mesh

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5
Q

Describe a bus topology.

A

Network using a single cable to connect all computers in a line

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6
Q

Describe ring topology.

A

Network connected in a ring by a cable, where the date moves in a circle in the same direction

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7
Q

Why does the bus topology require termination at each end of the cable?

A

To prevent signal from reflecting at the ends

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8
Q

What do bus and ring topologies suffer from?

A

The entire network stops working if the cable breaks at any point

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9
Q

Describe a star topology.

A

Central connection box for all computers on a network

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10
Q

What does star topology offer that bus and ring do not?

A

Fault tolerance

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11
Q

Describe fault tolerance.

A

If one cable breaks, all the computers could still communicate

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12
Q

What is physical topology?

A

How the cables physically look

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13
Q

What is logical topology?

A

How the signals travel electronically

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14
Q

Describe mesh topology.

A

Network where every computer connects to every other computer via two or more routes

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15
Q

What are the two types of meshed topologies?

A
  1. Partially meshed

2. Fully meshed

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16
Q

Describe partially meshed topology.

A

At least two machines have redundant connections, but every machine does not have to connect to every other machine

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17
Q

Describe fully meshed topology.

A

Every computer connects directly to every other computer

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18
Q

What is network technology?

A

Practical application of a topology and other critical technologies that provide a method to get data from one computer to another on a network

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19
Q

What kind of cabling uses copper wire wrapped up in some kind of protective sheathing?

A

Copper cables

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20
Q

What are the two primary types of copper cabling used in the industry?

A
  1. Coaxial

2. Twisted pair

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21
Q

What is coaxial cable?

A

Contains a central conductor wire surrounded by an insulating material that is surrounded by a braided metal shield

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22
Q

What does coaxial cable do?

A

Fields data transmissions from interference(EMI)

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23
Q

What is an F-connector?

A

Type of cable connector that screws on, Making for a secure connection

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24
Q

What is an Ohm rating?

A

Relative measure of resistance on a cable

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25
Q

What is impedance?

A

Set of characteristics that define how much a cable resists the flow of electricity

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26
Q

What is capacitance?

A

How long it takes the wire to get a full charge

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27
Q

What are the Ohm rating, connector type and use of RG-58 coaxial cables?

A

Ohm rating: 50
Connector: BNC
Use: Networking

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28
Q

What are the Ohm rating, connector type and use of RG-59 coaxial cables?

A

Ohms: 75
Connector: F Type
Use: Cable TV

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29
Q

What are the Ohm rating, connector type and use of RG-6 coaxial cables?

A

Ohms: 75
Connector: F Type
Use: Cable TV

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30
Q

What are the two types of twisted-pair cabling?

A
  1. Shielded

2. Unshielded

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31
Q

Describe Shielded Twisted Pair(STP).

A

Consists of two pairs of wires surrounded by shielding to protect them from EMI

32
Q

What are the 6 types of STP?

A
  1. F/UTP
  2. S/UTP
  3. SF/UTP
  4. S/FTP
  5. F/FTP
  6. U/FTP
33
Q

Describe Unshielded Twisted Pair(UTP).

A

Consists of two pairs of wires surrounded by a plastic jacket; does not provide any protection from EMI

34
Q

Describe F/UTP.

A

Foil shields the entire cable; inside, the wires are just like UTP

35
Q

Describe S/UTP.

A

A braid screen shields the entire cable; inside, the wires are just like UTP

36
Q

Describe SF/UTP.

A

A braid screen and foil shields the entire cable; the wires inside are just like UTP

37
Q

Describe S/FTP.

A

A braid screen shields the entire cable; foil shields each wire pair inside

38
Q

Describe F/FTP.

A

Foil screen shields the entire cable; flood shields each wire pair inside

39
Q

Describe U/FTP.

A

No overall shielding; each pair inside is shielded with foil screens

40
Q

What are Category (Cat) ratings?

A

Variety of grades of cable used by the cabling industry

41
Q

What are Cat ratings officially rated in?

A

Megahertz (MHz)

42
Q

What are the 4 Cat ratings recognized by the Telecommunications Industry Association(TIA)?

A
  1. Cat 3
  2. Cat 5e
  3. Cat 6
  4. Cat 6a
43
Q

What are the max frequency and bandwidth of Cat 3 cables?

A

Frequency: 16 MHz
Bandwidth: 16 Mbps

44
Q

What are the max frequency and bandwidth of Cat 5e cables?

A

Frequency: 100 MHz
Bandwidth: 1 Gbps

45
Q

What are the max frequency and bandwidth of Cat 6 cables?

A

Frequency: 250 MHz
Bandwidth: 10 Gbps

46
Q

What are the max frequency and bandwidth of Cat 6a cables?

A

Frequency: 500 MHz
Bandwidth: 10 Gbps

47
Q

What is bandwidth?

A

Maximum amount of data that goes through a cable per second

48
Q

What does 8P8C stand for?

A

8 position 8 contact; it is the current connector used on wires networks( sometimes referred to as RJ-45 connectors)

49
Q

Describe fiber optic cables.

A

Transmit light rather that’s electricity, making it attractive for both high-EMI areas and long distance transmissions

50
Q

What is the theoretical max distance that fiber optic cabling can operate at?

A

Distances up to tens of kilometers

51
Q

What are the four components of fiber optic cables?

A
  1. Core
  2. Cladding
  3. Buffer
  4. Insulating jacket
52
Q

What is cladding?

A

Part of fiber optic cable that makes the light reflect down the fiber

53
Q

What is the most common fiber optic cable size?

A

62.5/ 125 micro

54
Q

What is a multimode fiber(MMF)?

A

Fiber optic cable that uses LED’s

55
Q

What is a single mode fiber (SMF)?

A

Fiber optic cable that uses lasers

56
Q

Describe modal distortion.

A

Signals sent at the same time don’t arrive at the same time because the paths differ slightly in length

57
Q

What does it mean when connectors are duplex?

A

Both the send and receive cables are attached

58
Q

What are fire ratings?

A

Define the risk of network cables burning and creating noxious fumes and smoke

59
Q

What are the two most common fire ratings?

A
  1. PVC

2. Plenum

60
Q

What is PVC?

A

Polyvinyl chloride - rating has no significant fire protection; creates a lot of smoke and noxious fumes

61
Q

Describe Plenum-rated cable.

A

Creates much less smoke and fumes than PVC but Costa about three to five times as much

62
Q

What is a plenum?

A

Space between the acoustical tile ceiling and the actual concrete ceiling above

63
Q

What is the third type of fire rating?

A

Riser - designated proper cabling to use for vertical runs between floors and a building

64
Q

What is the IEEE?

A

Institute of Electrical and Electronics Engineers - defines the industry wide standards that promote the use and implementation of technology

65
Q

What is the IEEE 802.1 subcommittee?

A

Higher layer LAN protocols

66
Q

What is the 802.11 subcommittee?

A

Wireless LAN(WLAN); specifications such as Wi-Fi

67
Q

What is the IEEE 802.15 subcommittee?

A

Wireless Personal Area Network (WPAN)

68
Q 
Which of the following topologies required termination?
A. Star
B. Bus
C. Mesh
D. Ring
69
Q

Star-bus is an example of a ________ topology?

70
Q 
Of the topologies listed below, which is the most fault tolerant?
A. Point-to-point
B. Bus
C. Star
D. Ring
71
Q

What term is used to describe the inter connectivity of network components?

72
Q

Coaxial cables all have an __________ rating.

73
Q 
Which of the following is a type of coaxial cable?
A. RJ-45
B. RG-59
C. BNC
D. Barrel
74
Q

Which network topology connected nodes with a ring of cable?

75
Q

Which network topology is most commonly seen in wireless networks?

76
Q 
Which of the following is a duplex fiber-optic cable?
A. LC
B. RJ-45
C. ST
D. SC
77
Q

What is the most common category of UTP used in new cabling installations?

Network+ N10-007 (3 decks)

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