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Test Out Network + > Cables and Connectors > Flashcards

Cables and Connectors Flashcards

1
Q

Phone Cable

A

Connector: RJ11
dial up connection
2 pairs of twisted cable ( a total of 4 wires)

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2
Q

Cat 3

A

Connector: RJ45

designed for 10 megabit Ethernet or 16 megabit token ring

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3
Q

Cat 5

A

Connector: RJ45
supports 100 megabit Ethernet and ATM networking
also supports gigabit (1000 Mb) ethernet

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4
Q

Cat 5e

A

Connector: RJ45

provides better EMI protection than Cat 5

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5
Q

Cat 6

A

Connector: RJ45
Supports 10 Gbps Ethernet and high-bandwidth, broadband communications
Cat 6 cables often include a solid plastic core that keeps the twisted pairs separate and prevents he cable from being ben too tightly

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6
Q

Cat 6a

A

Connector: RJ45
Designed to provide EMI protection than Cat 6.
Cat 6a provides better performance than Cat 6 especially when used with 10Gbps Ethernet

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7
Q

RJ11

A
  • Has 4 connectors
  • Supports up to 2 pair of wires
  • Uses a locking tab to keep connector secure in outlet
  • Used primarily for telephone wiring
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8
Q

RJ45

A
  • Has 8 connectors
  • Supports up to 4 pairs of wires
  • Uses a locking tab to keep connector secure in outlet
  • Used for Ethernet & some token ring connections
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9
Q

RJ48c

A

identical to RJ45 but is used for specific WAN connections such as a T1 line, and is wired differently

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10
Q

Twisted pair

A

supports a wide variety of fast, modern network standards

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11
Q

Facts about twisted pair

A
  • 2 wires cay data signals ( 1 conductor carries positive signal other carries negative)
  • PVC or plenum plastic insulation surrounds each wire
  • Plenum is used when wiring above ceiling tile (fire resistant & non toxic)
  • PVC can’t be used above ceiling ( toxic when burned)
  • 2 wires are twisted to reduce EMI and crosstalk (since wires are twisted EMI affects both wires equally and should be cancelled out)
  • Can be classified by the outer sheath as STP or UTP
  • STP ha a grounded outer copper shield around the bundle of twisted pairs and around each pair that provides added protection against EMI
  • UTP doesn’t have a grounded outer copper shield. (they are easier to work with and less expensive than shielded cables)
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12
Q

Coaxial cable Facts

A
  • Older technology that is usually implemented with a bus topology.
  • Not suitable for ring or star because the ends of the cable must be terminated.
  • It is composed of two conductors that share a common axis within a single cable
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13
Q

Coaxial cable components

A
  • Two concentric metallic conductors
    • inner conductor carries data signal(made of copper or cooper coated tin).
    • mesh connector is second physical channel that also grounds the cable. (made of aluminum or cct)
  • Insulator that surrounds the inner conductor that keeps the signal separated from the mesh conductor (made of PVC plastic)
  • A mesh conductor that surrounds the insulator and grounds the cable. (made of aluminum or cct)
  • Cable encasement that surrounds and protects the wire ( made of PVC plastic)
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14
Q

Coaxial advantages

A
  • Highly resistant to EMI

* Highly resistant to physical damage

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15
Q

Coaxial disadvantages

A
  • More expensive than UTP
  • Inflexible construction ( more difficult to install)
  • Unsupported by newer networking standards
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16
Q

RG-58

A
  • 10Base2 Ethernet networking (also called thinnet)

* Resistance Rating: 50 ohms

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17
Q

RG-59

A
  • Cable TV and cable networking

* Resistance Rating: 75 ohms

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18
Q

RG-6

A
  • Cable TV, satellite TV, and cable networking
  • less signal loss than RG-59 better choice for networking application especially when longer distance are involved
  • Resistance Rating: 75 ohms
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19
Q

RG-8

A
  • 10Base5 Ethernet networking (also called Thicknet)

* Resistance Rating: 50 ohms

20
Q

F - Type

A
  • Twisted onto the cable
  • Used to create cable and satellite TV connections
  • Used to connect a cable modem to a broadband cable connection
21
Q

BNC

A
  • Molded onto the cable

* Used in 10Base2 Ethernet networks

22
Q

AUI

A
  • Is a DB15 serial connector

* Used in 10Base5 Ethernet networks

23
Q

DB25

A
  • has 25 pins arranged in two rows (top row 13 lower row 12)

* used for parallel, RS-232 serial, or SCSI aplications

24
Q

Fiber Optic Facts

A
  • On strand transmits signal and the other receives
  • The core carries the signal (made of plastic or glass)
  • Cladding maintains the single in the center of the core as the cable bends
  • The sheathing protects the cladding and the core
25
Q

Fiber Optic Advantages

A
  • Totally immune to EMI
  • Highly resistance to eavesdropping
  • Supports extremely high data transmission rates
  • Allows greater cable distances without a repeater
26
Q

Fiber Optic Disadvantages

A
  • Very expensive
  • Difficult to work with
  • Special training required to attach connectors to cables
27
Q

Single Mode

A
  • Uses lasers
  • Data transfers through the core using a single light ray (ray also called a mode)
  • Core diameter is around 10 microns
  • At distances up to 3km, single mode delivers dat rates up to 10 Gbps.
  • Cable lengths can extend a great distance
28
Q

Multimode

A
  • Uses LEDs
  • Data transfers through the core using multiple light rays
  • Core diameter is around 50 to 100 microns
  • At distances of under 2km, it delivers dat rates up to 1 Gbps
  • Cable lengths are limited in distance
29
Q

Straight-through cable

A

Computers connect to the network through a hub or switch with a straight through cable. There are two standards for creating them.

30
Q

ST Connector

A

10

31
Q

SC Connector

A

20

32
Q

LC Connector

A

30

33
Q

MT-RJ Connector

A

40

34
Q

FC Connector

A

50

35
Q

Fiber Coupler

A

60

36
Q

T568A

A

Pin Order 1-8: GW, G, OW, B, BW, O, BrW, Br

37
Q

T568B

A

Pin Order 1-8: OW, O, GW, B, BW, G, BrW, Br

38
Q

Crossover Cable

A
  • Computers can directly connect to each other with this cable
  • Use T568A in the first connector and T568B in the second connector to create a crossover cable
39
Q

Ethernet specification pins

A
  • Pin 1: Tx+
  • Pin 2: Tx-
  • Pin 3: Rx+
  • Pin 4: Unused
  • Pin 5: Unused
  • Pin 6: Rx-
  • Pin 7: Unused
  • Pin 8: Unused
  • Tx = transmit signal Rx = receiving signal
40
Q

Demarcation Point (demare)

A
  • When you contract with a local exchange carrier (LEC) for data or telephone services, they install a physical cable and a termination jack onto your premises.
  • Demarcation point is the line that marks the boundary between the telco equipment and the private network or telephone system
41
Q

Demarcation Point Facts

A
  • LEC is responsible for all equipment on one side of the demarc and the customer is responsible for equipment on the other side
  • demarc is also called minimum point of entry (MPOE) or the end user point of termination (EU-POT)
  • Is typically located on the bottom floor of a building, just inside the building. For residential service it is often a small box on the outside of the house
  • For business installation it is identified by an orange plastic cover on the wiring component
42
Q

Main Distribution Frame (MDF)

A
  • Main wiring point for a building
  • Usually located on bottom floor or basement
  • LEC typically installs the demarc to the MDF
43
Q

Intermediate Distribution Frame (IDF)

A
  • Smaller wiring distribution point within a building
  • Typically located on each floor directly above the MDF
  • Additional IDF’s can be added to each floor as necessary
44
Q

Demarc Extension

A

Extends the demarcation point from its original location to another location within the building

45
Q

Demarc Extension Facts

A
  • Usually consists of a single wire bundle that attaches to the existing demarc and supplies a termination point to a different location
  • Might need if your network occupies an upper floor of a building
  • Need to place demarc into the IDF on your floor
  • You are responsible for installing the extensions
46
Q

Vertical cross connect

A
  • Connects the MDF on the main floor to IDFs on upper floors

* Cabling runs vertically between the MDF and the IDFs

47
Q

Horizontal cross connect

A
  • Connects IDFs on the same floor

* Cabling runs horizontally between the IDFs

Test Out Network + (25 decks)

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