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Network+ > Cabling and Topology > Flashcards

Cabling and Topology Flashcards

1
Q

Name the network topologies

A

bus, ring, star, hybrid, mesh, point-to-point. point-to-multipoint

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2
Q

A network that uses a single bus cable that connects all of the computers in a line

A

Bus Topology

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3
Q

A network topology in which all the computers on the network attach to a central ring of cable

A

Ring Topology

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4
Q

The entire network stops working if the cable breaks at any point in which topologies?

A

Bus and Ring

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5
Q

A network topology in which all computers in the network connect to a central wiring point

A

Star Topology

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6
Q

The capability of any system to continue functioning after some part of the system has failed

A

Fault Tolerance

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7
Q

The manner in which the physical components of a network are arranged

A

Physical Topology

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8
Q

What is Signaling Topology

A

How the signal travel electronically

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9
Q

What is a hybrid topology?

A

A mix or blend of two different topologies. Ex star-bus topology

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10
Q

Topology in which each computer has a direct or indirect connection to every other computer in a network. Any node on the network can forward traffic to other nodes. Popular in cellular and many wireless networks.

A

Mesh Topology

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11
Q

Name the two types of meshed topologies

A

partial and full meshed topologies

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12
Q

A mesh topology in which not al of the nodes are directly connected

A

Partially Meshed Topology

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13
Q

A mesh network where every node is directly connected to every other node

A

Fully Meshed Topology

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14
Q

Topology in which one device communicates with more than one other device on a network

A

Point-to-Multipoint Topology

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15
Q

What is the difference between star and point-to-multipoint topology?

A

Point-to-point requires a intelligent device in the center

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16
Q

Network topology in which two computers are directly connected to each other without any other intervening connection components such as hubs or switches

A

Point-to-Point

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17
Q

A practical application of a topology and other critical technologies that provides a method to get data from one computer to another on a network

A

Network Technology

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18
Q

A type of cable that contains a central conductor wire surrounded by an insulating material, which in turn is surrounded by a braided metal shield.

A

Coaxial Cable

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19
Q

What does coaxial cable shield data transmissions from?

A

Electromagnetic interference (EMI)

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20
Q

Interference from one device to another, resulting in poor performance in the device’s capabilities.

A

Electromagnetic Interference (EMI)

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21
Q

Ratings developed by the U.S. military to provide a quick reference for the different types of coaxial cables

A

Radio Grade Ratings (RG)

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22
Q

Electronic measurement of a cable’s or an electronic component’s impedance.

A

Ohm Rating

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23
Q

Describes a set of characteristics that define how much a cable resists the flow of electricity — also how long it takes the wire to get a full charge — the wire’s capacitance – and more

A

Impedance

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24
Q

The most common type of cabling used in networks consist of ____ of cables bundled together into a common jacket

A

Twisted Pair

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25
Q

What does the twisted pair prevent?

A

Crosstalk

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26
Q

Electrical signal interference between two cables that are in close proximity to each other

A

Crosstalk

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27
Q

Name the two types of twisted-pair cabling

A

shielded and unshielded twisted pair (STP, UTP)

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28
Q

Consists of twisted pairs of wire surrounded by shielding to protect them from EMI

A

Shielded twisted pair (STP)

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29
Q

When is STP needed?

A

Locations with excessive electronic noise, such as hop floor with lots of lights, electric motors, or other machinery that could cause problems for other cables

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30
Q

Unshielded twisted pair (UTP)

A
  • consists of twisted pairs of wire surrounded by a plastic jacket
  • jacket doesn’t provide protection from EMI
  • cost less than STP
  • in most cases performs just a well
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31
Q

A grade assigned to cable to help network installers get the right cable for the right network technology

A

Category Rating (CAT)

32
Q

CAT is rating are rated in ___?

A

Megahertz (MHz)

33
Q

Megahertz

A

Indicates the highest frequency the cable can handle

34
Q

CAT 3

A

Max Frequency - 16MHz
Max Bandwidth - 16Mbps
Status with TIA/EIA - Recognized

35
Q

CAT 5

A

Max Frequency - 100MHz
Max Bandwidth - 100Mbps
Status with TIA/EIA - No longer recognized

36
Q

CAT 5e

A

Max Frequency - 100MHz
Max Bandwidth - 1000Mbps
Status with TIA/EIA - Recognized

37
Q

CAT 6

A

Max Frequency - 250MHz
Max Bandwidth - 10,000Mbps
Status wit TIA/EIA - Recognized

38
Q

CAT 6a

A

Max Frequency - 500MHz
Max Bandwidth - 10,000Mbps
Status with TIA/EIA - Recognized

39
Q

Frequency stands for what?

A

Cycles per second such as 100MHz

40
Q

The maximum amount of data that goes through the cable per second is called _____

A

Bandwidth

41
Q

Current networks developer implemented bandwidth-efficient encoding schemes, What does that mean?

A

They can squeeze more bits into the same signal as long as the cable can handle it. Ex. CAT 5e can handle a throughput of up to 1000Mbps although it only rated to handle up to 100MHz

42
Q

Connectors used for UTP cable on both telephone and network connections

A

RJ (Registered Jack)

43
Q

Type of connector with four-wire UTP connections, usually found in telephone connections

A

RJ- 11 connectors

44
Q

Type of connector with eight-wire UTP connections, usually found in network connections and used for 10/100/1000BaseT networking

A

RJ-45

45
Q

A high speed physical medium for transmitting data that uses light rather than electricity to transmit data and is made of high purity glass fibers sealed within a flexible opaque tube.

A

Fiber-Optic Cable

46
Q

What are the four components of fiber optic cables

A

The Core (glass fiber itself), Cladding (the part that makes the light reflect down the fiber) Buffer (material that give strength) and the insulating jacket

47
Q

Type of fiber-optics that uses LED’s

A

Multimode Fiber (MMF)

48
Q

Fiber-optic cables that use lasers

A

Single-Mode Fiber (SMF)

49
Q

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

A

Modal distortion (a flaw in MMF)

50
Q

Almost all MMF cables transmit at what rate?

A

850nm

51
Q

SMF transmit at what rate?

A

1310 or 1550nm depending on the laser

52
Q

Name the four types of fiber optic connector types

A

ST, SC, LC, and FC

53
Q

Fiber optic connector used primarily with 2.5mm, single-mode fiber. It uses a push on, then twist-to-lock mechanical connection commonly called stick-and-twist

A

ST Connector aka Straight Tip

54
Q

Fiber optic connector used to terminate single-mode and multi-mode fiber. It is characterized by its push-pull, snap mechanical coupling known as stick and click

A

SC Connector aka subscriber connector aka standard connector aka square connector

55
Q

One popular type of small form factor (SSF) connector, considered by many to be the predominate fiber connector

A

Local Contector (LC)

56
Q

A description of later-generation, fiber optic connectors designed to e much smaller hat the first iterations of connectors

A

Small Form Factor (SFF)

57
Q

A screw on connector used to terminate small-diameter coaxial cable such as RG-6 and RG-59 cables

A

F- Connector

58
Q

A duplex type of SFF fiber connector designed to accept two fiber cables

A

LC Connector aka little connector

59
Q

Duplex

A

can send and receive

60
Q

A 9-pin D shaped subminiature connector used in serial port connections

A

DB-9

61
Q

A 25-pin D shaped subminiature connector typically use in parallel and older serial port connections

A

DB-25

62
Q

Parallel connections are limited to which topology

A

point-to-point

63
Q

Name the two common fire rating

A

PVC and Plenum

64
Q

What is the difference between PVC and Plenum

A

PVC has no significant fire protection, It creates lots of smoke and noxious fumes Plenum creates much less smoke and fumes but cost 5x as much as PVC

65
Q

Industry wide standards that promote the use and implementation of technology

A

Institute of Electrical and Electronics Engineers (IEEE)

66
Q

IEEE 802.3

A

Ethernet (with a ton of subcommittees, such as 802.3ae for 10-Gigabit Ethernet)

67
Q

IEEE 802.11

A

Wireless LAN (WLAN) specification such as Wi-Fi and many subcommittees

68
Q

Which topology requires termination?

A

Bus - The cable must be terminated at both ends to prevent signal reflection

69
Q

Star-bus is an example of what type of topology

A

Hybrid

70
Q

Which topology is the most fault tolerant?

A

Star

71
Q

What term is used to describe the interconnectivity of network components?

A

Topology

72
Q

Coaxial cables have what type of rating

A

Ohm

73
Q

Name a type of coaxial cable

A

RG-59

74
Q

Which network topology connects nodes with a ring of cable?

A

Ring

75
Q

Which network topology is most commonly seen only in wireless networks?

A

Mesh

76
Q

Name a duplex fiber optic connection

A

LC

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