Cabling and Topography

Question 1

What is Topography

Answer 1

Organization of cables

Question 2

What is a Bus Topography? How is it normally set up?

Answer 2

All hosts are connected through a single bus in the ceiling. This is done through a drop connection from the ceiling.

Question 3

What is a drop?

Answer 3

Network connection that drops down from the ceiling. Not used too much these days

Question 4

What is a Ring Topography?

Answer 4

IBM made the Token ring topography. All hosts are connected in circular ring

Question 5

Star Topography? What kind of topography is it?

Answer 5

All hosts are connected to one block in the middle (switch). This is a physical topography, as it can be created with hosts and a switch physically.

Question 6

Star bus Topography?

Answer 6

Turns the bus into a switch, instead of a single wire. All wires connect to the bus (switch/hub).

Question 7

What is the primary topography used today?

Answer 7

Star Bus Topography

Question 8

Mesh Topography? Difference between partially meshed topography

Answer 8

Each host is directly connected to each other hosts (forming a mesh). Partially meshed topography is when one node is connected to one host but not all of them.

Question 9

What is a coaxial cable?

Answer 9

It’s when one copper and metal conductor share the same axis - hence coaxial

Question 10

What does Radio Grade (RG) describe in a coaxial cable?

Answer 10

Refers to the thickness of the conductors, insulation, and shielding

Question 11

What is the oldest coaxial used for networking?

Answer 11

RG-58

Question 12

Which is thicker? RG-56 or RG-59

Answer 12

RG-56

Question 13

What is unshielded twisted pairing? What are the cons/pros to using this?

Answer 13

It’s when no metal is covering the wires. It is subject to interference from environmental factors. Very cheap compared to normal cables.

Question 14

What are the connecting standards in twisted pairs?

Answer 14

568A and 568B

Question 15

From top - bottom, what is the 568A configuration?

Answer 15

Brown
Brown/white
Orange
Blue/white
Blue
Orange/white
Green
Green/white

Question 16

From top-bottom, what is the 568b configuration?

Answer 16

Brown
Brown/white
Green
Blue/white
Blue
Green/White
Orange
Orange/White

Question 17

What does a CAT rating show?

Answer 17

It shows the different speeds and lengths

Question 18

Cat 1 is used for what?

Answer 18

Phones normally

Question 19

What the difference between Cat 6 and Cat 7?

Answer 19

Cat 7 is shielded

Question 20

What is the speed and length of Cat 5?

Answer 20

100 MBPs up to 100m

Question 21

What is the speed and length of Cat 6e?

Answer 21

1gbs up to 100m

Question 22

What is the speed of Cat 6a?

Answer 22

10 gbs up to 100m

Question 23

What’s the difference between multimode and single mode cables?

Answer 23

Multimode cables carry LED signals and are almost always orange in color

Single mode carry laser signals. They are thinner and designed to longer distance. Almost always yellow in color

Question 24

Describe how each connector is connected:
ST connector
SC connector
FC connector
UPC connector
APC connnector

Answer 24

ST connector - Earliest types of connector and pushes in 
SC connector - Square punch in and out
FC Connection - screws in
UPC - slightly rounded in cylinder
APC - angle on the cut

Question 25

What is plenium rating?

Answer 25

Space between the ceiling the drop-ceiling. Wires are meant to run through this space.

Question 26

What is PVC or non-plenum?

Answer 26

No fire protection at all

Question 27

What is the rating used for sky scrapers?

Answer 27

Riser-rated