Chapter 2 Cabling & Topo.

Question 1

What is network topology?

Answer 1

The way that pieces of hardware connect to one another, via wired or wireless connection

Question 2

What brings a bus network down if both ends aren’t terminated?

Answer 2

Reflection

Question 3

What is a signaling/logical topology?

Answer 3

How signals travel electronically/the shape of signal flow inside the star box

Question 4

What was the most successful star-ring?

Answer 4

IBM’s “Token Ring”

Question 5

What are the two distinct types of cable?

Answer 5

Copper & Fiber-Optic

Question 6

What are copper cables also called?

Answer 6

Coax

Question 7

What are the 4 layers of copper/coax cables?

Answer 7

1) Central Copper Wire
2) Insulation
3) Braided Metal Shield
4) Jacket

Question 8

What cable did early bus networks use?

Answer 8

Coax

Question 9

What is coax primarily used for today?

Answer 9

Connect cable modem to ISP

Question 10

What movement do coax connectors do to connect?

Answer 10

Screw-On

Question 11

What connectors do coax cables typically use?

Answer 11

F-Type “Screw On”

Question 12

What are the two coaxial cable types?

Answer 12

1) RJ-59: for cable television
2) RG-6: predominantly used today

Question 13

What is RJ-59 coaxial cable used for and what is its Ohm rating?

Answer 13

Cable Television; 75 Ohms

Question 14

What is RG-6 cable used for and what is its Ohm rating?

Answer 14

Typical coax used today by ISPs etc.; 75 Ohms

Question 15

All coax cables have a ___ rating

Answer 15

Radio Guide (RG)

Question 16

What is the Ohm rating?

Answer 16

IMPEDANCE: Defines how much a cable resists the flow of electricity, how long it takes to get a full charge, and capacitance

Question 17

What cables do barrel connectors connect?

Answer 17

Two Coax Cables

Question 18

What is twinaxial cable?

Answer 18

A type of coax; 2 central copper conductors wrapped around a single shield

Question 19

When twinaxial is used to substitute short fiber connections inside a rack, what is it called?

Answer 19

DAC (Direct Attached Cable)

Question 20

What interference does twisted pair reduce?

Answer 20

Crosstalk

Question 21

Define Category (CAT) Ratings; What measurement is used?

Answer 21

MHz ratings which reflect the maximum frequency a cable can handle

Question 22

What measurement is frequency measured in?

Answer 22

MHz

Question 23

What measurement is bandwidth measured in?

Answer 23

Mb or Gb / second; (Gbps)

Question 24

What is the max frequency for Cat 3?

Answer 24

16 MHz

Question 25

What is the max frequency for Cat 5e?

Answer 25

100MHz

Question 26

What is the max frequency for Cat 6?

Answer 26

250 MHz

Question 27

What is the max frequency for Cat 6a?

Answer 27

500 MHz

Question 28

What is the max bandwidth for Cat 3?

Answer 28

16 mbps

Question 29

What is the max bandwidth for Cat 5e?

Answer 29

1,000 mbps / 1 gbps

Question 30

What is the max bandwidth for Cat 6?

Answer 30

10,000 mbps / 10 gbps

Question 31

What is the max bandwidth for Cat 6a?

Answer 31

10,000 mbps / 10 gbps

Question 32

A MHz is how many hertz?

Answer 32

1,000,000 hertz

Question 33

What is frequency?

Answer 33

Bits of data per second; 1 hertz is 1 bit of data per second

Question 34

What is bandwidth?

Answer 34

Maximum amount of data that goes through the cable per second

Question 35

What are bandwidth-efficient encoding schemes?

Answer 35

Squeezing more bits into the same signal if the cable is capable of handling it; Is why Cat 5e can handle 1,000 mbps while being rated for 100 mHz

Question 36

What Cat of cabling is mainly used for modern networks?

Answer 36

Cat 6

Question 37

What Cat(s) of cabling are organizations future-proofing with?

Answer 37

Cat 6a & Cat7

Question 38

What connectors were used for old landline telephones?

Answer 38

RJ (Registered Jack)

Question 39

What connector is used by phones and supports up to 2 pairs of UTP wires?

Answer 39

RJ-11

Question 40

What are 8P8C connectors also called?

Answer 40

RJ45

Question 41

What are RJ45 connectors also called?

Answer 41

8P8C (8 point, 8 contact)

Question 42

What are the 4 components of fiber-optic cabling?

Answer 42

1) Core (glass fiber) 2) Cladding (reflects the light down) 3) Buffer/Fiber (buffer which adds strength) 4) Insulating Jacket

Question 43

What type of fiber optic experiences modal distortion?

Answer 43

MMF (LED-based)

Question 44

What is the first fiber optic connector called?

Answer 44

ST (twist)

Question 45

What is the second fiber optic connector called?

Answer 45

SC (click)

Question 46

What is the third fiber optic connector called?

Answer 46

LC (little couple meaning duplex)

Question 47

What is the fourth fiber optic connector called?

Answer 47

MT-RJ (duplex)

Question 48

Who sets the standards for networking?

Answer 48

IEEE

Question 49

What is the (###)(?) Working Group also called?

Answer 49

IEEE 802

Question 50

What is the IEEE (###)(?) also called?

Answer 50

802 Working Group