N10-009-CablesAndConnectors

Question 1

Describe the 4 parts of a Coaxial cable

Answer 1

inner conductor (core), insulator (separates the inner conductor from the outer conductor), outer conductor (mesh part), PVC covering (protection)

Question 2

Describe Radio Grade (RG)

Answer 2

Determines the thickness of the cable and the conductors. Coaxial cables are also defined in the amount of resistance they have which is measured in Ohms

Question 3

1000BASE-CX

Answer 3

Uses Twinaxial cable - 25 meter max

Question 4

RG-6

Answer 4

A kind of Coaxial cable, the standard for today. Resistance of 75 Ohms

Question 5

F type connector

Answer 5

Coaxial connecter, twist on, most common

Question 6

BNC connector

Answer 6

Coaxial connecter, short twist that locks into place

Question 7

Twinaxial / Twinax cable

Answer 7

2 inner conductors that share a single outer conductor

Question 8

Describe advantages and disadvantages of coaxial cables

Answer 8

Highly resistant to electromagnetic interference (EMI) - Highly resistant to physical damage - inflexible, expensive

Question 9

Define UTP (Cabling)

Answer 9

Unshielded Twisted Pair - regular data cable - UTP has max distance of 100 meters or 325 feet. Cable pairs are twisted to reduce EMI and crosstalk

Question 10

Define TIA/EIA-568A

Answer 10

Standard for UTP - WG, G, WO, B, WB, O, WBr, Br - Swap G and O for 568B

Question 11

Define TIA/EIA-568B

Answer 11

Standard for UTP - WO, O, WG, B, WB, G, WBr, Br - Swap G and O for 568A

Question 12

Define STP (Cabling)

Answer 12

Shielded Twisted Pair - has a grounded copper shield around the pairs for added protection - STP has max distance of 100 meters or 325 feet. Cable pairs are twisted to reduce EMI and crosstalk - Not as common as UTP

Question 13

Cat3 - Distance and Speed

Answer 13

100 meters - 10Mbps

Question 14

Cat4 - Distance and Speed

Answer 14

100 meters - 16Mbps

Question 15

Cat5 - Distance and Speed

Answer 15

100 meters - 100mbps

Question 16

Cat5e - Distance and Speed

Answer 16

100 meters - 1Gbps (better EMI protection)

Question 17

Cat6 - Distance and Speed

Answer 17

100 meters - 10Gbps (Only 55 meters with 10GBaseT network)

Question 18

Cat6a - Distance and Speed

Answer 18

100 meters - 10Gbps (better EMI protection)

Question 19

Cat7 - Distance and Speed

Answer 19

100 meters - 10Gbps+ (better EMI protection)

Question 20

Cat8 - Distance and Speed

Answer 20

100 meters - 25Gbps (40Gbps at 30 meters, 40GBaseT network)

Question 21

Describe a Fiber Optic cable

Answer 21

Core, Cladding (reflects the light back into the core), Cable Jacket - Fiber cables always use 2 connectors (Duplex)

Question 22

Multimode (Cabling)

Answer 22

Carries LED signals - Almost always orange cable

Question 23

Single-mode (Cabling)

Answer 23

Carries laser signals - really long distances - Almost always yellow cable

Question 24

ST connector

Answer 24

Fiber connector - Straight Tip. Looks like a thin F connector, or a 3.5mm connector - put it in and twist like a BNC.

Question 25

SC connector

Answer 25

Fiber connector - Square / Subscriber Connector. Push in to lock, pull to unlock

Question 26

FC connector

Answer 26

Fiber connector - looks almost exactly like the ST connector but it screws in like an F connector

Question 27

LC connector

Answer 27

Fiber connector - Local Connector. two connectors build into 1, cause fiber is always duplex - looks like 2 SC connectors, but they have tab to lock the connector into place like an cat6 cable.

Question 28

MPO / MTP connector

Answer 28

MultiFiber Push On. Has 12 fibers in a single cable. Push to lock. Square block shape

Question 29

MT-RJ connector

Answer 29

Fiber connector - two connectors in 1, but it looks like 1 connector, no protruding pin

Question 30

PC (Polishing)

Answer 30

Physical Contact - when making a Fiber end, slightly rounded ends on the core of the cable

Question 31

UPC (Polishing)

Answer 31

Ultra Physical Contact - when making a Fiber end, more rounded ends on the core of the cable, less loss of light

Question 32

APC (Polishing)

Answer 32

Angled Physical Contact - when making a Fiber end, 7 degree angle on the end of the core of the cable. Looks like a used pencil, less loss of light

Question 33

10BASE-T (or TX)

Answer 33

10mbps, two pair (not four), Cat3 cable, 100 meter max distance

Question 34

100BASE-T

Answer 34

100mbps, two pair (not four), Cat5 cable, 100 meter max distance

Question 35

1000BASE-T

Answer 35

1000mbps, four pair, Cat5e cable, 100 meter max distance

Question 36

10GBASE-T

Answer 36

1000mbps, four pair, Cat6 cable, 100 meter max distance - Frequency use of 500MHz which is well above the 125MHz used for gigabit Ethernet. UTP 55 meters, STP 100 meters. Or use Cat6a cable and you can get 100 meters on UTP

Question 37

40GBASE-T

Answer 37

40Gbps, Cat8 cables at 30 meters

Question 38

100BASE-FX

Answer 38

100Mbps, pair of mutimode Fiber - 400 meters at half duplex, 2 Kilometers at full duplex

Question 39

100BASE-SX

Answer 39

Less expensive version of 100BASE-FX, 300 meters, LED

Question 40

1000BASE-SX

Answer 40

Gigabit Ethernet using short wavelength laser, usually multi-mode fiber, 220-550 meters

Question 41

1000BASE-LX

Answer 41

Gigabit Ethernet using long wavelength laser, multi-mode=550 meters, single-mode=5 kilometers

Question 42

10GBASE-SR / SW

Answer 42

Short-Range - Multi-mode fiber 26-400 meters - SW version designed to work on SONET networks

Question 43

10GBASE-LR / LW

Answer 43

Long-Range - 1310 nanometer Single-mode fiber 10 kilometers - LW version designed to work on SONET networks

Question 44

10GBASE-ER / EW

Answer 44

Long-Range - 1550 nanometer Single-mode fiber 40 kilometers - EW version designed to work on SONET networks

Question 45

What is WDM

Answer 45

Wavelength-Division Multiplexing - Bidirectional communication over a single strand of fiber. Use different wavelengths for each carrier. Different "colors."

Question 46

What is CWDM

Answer 46

Coarse Wavelength-Division Multiplexing - 10GBASE-LX4 uses four 3.125 Gbit/sec carriers at four different wavelengths

Question 47

What is DWDM

Answer 47

Dense Wavelength-Division Multiplexing - Multiplex multiple OC carriers into a single fiber - add 160 signals, increase to 1.6 Tbit/s