Media and Cabling

Question 1

2 types of coaxial cable

Answer 1

RG-6: used my local cable companies. thick version
RG-59: used for cable tv or satellite tv

Question 2

Twin-axial cable

Answer 2

Short range, fast speed, up to 10Gbps

Question 3

2 types of coaxial connectors

Answer 3

BNC: used in military (old)
F type: screw on type connector, most common type

Question 4

Serial cable

Answer 4

Also known as RS-232. Terminated with DB-9 or DB-25 connectors

Question 5

Twisted pair

Answer 5

More twist in each pair -> less EMI -> less retransmission -> faster speed

Question 6

2 types of twisted pair

Answer 6

UTP: most popular
STP: shielded in each pair and a metal foil inside plastic jacket covering all pairs -> decrease EMI between them pairs and from the outside too

Question 7

RJ

Answer 7

Registered Jack. Used to carry voice or data which specified the standards a decide needs to meet to connect to the phone or data network

Question 8

Two types of RJ connectors

Answer 8

RJ45: 8 pins -> used 4 -> Ethernet
RJ11: 6 pins -> used 2 -> DSL Model or VOIP phone or a phone line

Question 9

Bandwidth

Answer 9

Theoretical measure of how much data could be transferred

Question 10

Throughput

Answer 10

Actual measure of data transferred

Question 11

Cat 5

Answer 11

1000Base-T
100Mbps
100m

Question 12

Cat5e

Answer 12

1000Base-T
1000Mbps
100m

Question 13

Cat 6

Answer 13

10G Base-T
1000Mbps
UTP: 55m/ STP: 100m

Question 14

Cat6A

Answer 14

10G Base-T
1000Mbps
100m

Question 15

Cat7

Answer 15

STP only
10G Base-T
10Gbps
100m (can use connector called Tera)

Question 16

Cat8

Answer 16

STP only
40G Base-T
40Gbps
30m

Question 17

Keep cable runs under _____m from IDF to the offce

Answer 17

70m

Question 18

IDF and MDF

Answer 18

IDF: Intermediate Distribution Frame
MDF: Main Distribution Frame

Question 19

Straight through cable

Answer 19

Contain the exact same pin out both ends of the cable
also know as PATCH CABLE

Question 20

DTE and DCE

Answer 20

DTE: Data terminal equipment: end points devices that connect to a piece of data communication equipments or DCE

Exp: DTE: laptops, desktops, severs, routers
DCE: switch, modem, hub, bridge

Question 21

Crossover cable

Answer 21

Swap the send and receive pins on the other end of cable

Question 22

Switch to switch requires ______ cable

Answer 22

Crossover

Question 23

However certain switch does allow straight through cable because it simulates a crossover cable because of _______

Answer 23

MDIX (Medium dependent interface crossover)

Question 24

Plenum Cable

Answer 24

special coating out on twisted pair provides fire retardant chemical layer to the after insulating jacket

Question 25

Plenum cable are for places you _____

Answer 25

Cannot see. EXP: Ceiling, wall, raised floor, air duct

Question 26

FIBER OPTIC are

Answer 26

Expensive
Difficult to work with
Used only for backbone most of the time

Question 27

Two types of fiber optic cable

Answer 27

Single mode fiber
- Laser
- Long range
- Smaller core size (more precision over long distance)
- Yellow sheath
Multi mode fiber
- LED
- Shorter range (>2KM)
- Larger core size
- Aqua blue, orange color sheath

Question 28

Fiber optic connectors type

Answer 28

SC: Subscriber Connector or Stick n click
ST: Straight Tip or Stick n Twist
LC: Lucent or Love Connector
MTRJ: MECHANICAL TRANSFER REGISTERD JACK

Question 29

STICK N CLICK

Answer 29

Little ridge on top pushing in it will click
Gotta have two of those every time -> one for sending and one for receiving

Question 30

Stick n Twist

Answer 30

Twist in like a BNC connector
Gotta have two cable: one to receive and one to send

Question 31

MTRJ

Answer 31

Smaller form factor
each has both transmit and receive