Modern building

How many types of telecommunication is there, and what are they?

Voice Data Video

What does WAN, LAN and MAN stand for

Wide area network, local area network, metropolitan area network.

On a drawing what is the termination point for the service provider labeled?

NID - Network Interface Device

How much voltage can run on a network line?

Up to 90 volts

What are the two types of cabling topologies? How are they different?

Physical and logical.

Physical is how they are laid out.

Logical is how they communicate or the protocol.

Name the six basic physical topologies.

Linear bus

Star network

Ring topology

Tree topology (expanded star)

Mesh topology

Hybrid

What type of topology

Linear bus

What is the common transmission cable called on a linear bus system?

Trunk Cable

What topology is this?

Star network

What topology is this?

Ring topology

Where does the ring topology perform well?

Where does it suffer?

Well in heavy network loads.

One bad work station and the whole system suffers.

What type of topology?

Tree topology

What type of cables connect the hubs together in a tree topology?

Where does this system suffer?

Trunk cable.

Can only be 100 meters total.

What type of topology?

Mesh topology

What is mesh topology most common for?

Wifi

What topology is this?

Hybrid

What are the two types of protocol or logic?

Ethernet

Token ring

What is the advantage of ethernet over token ring?

What is the advantage of token ring over ethernet?

Ethernet much faster

Token ring no collisions

What system do new buildings network wires build by?

568 standard

What are the two sections of the 568 standard called?

Backbone cabling (vertical)

Horizontal cabling

What Telecom outlet is standard?

T568A common

T568B uncommon

How much length can we use for backbone cabling using twisted pair?

800 meters

How much length can we use in horizontal cabling with twisted pair?

100m total

How much length can we use with multimode fiber optic and single mode fiber optic with backbone cabling?

2,000 m multimode

3,000 m single mode

What do do we call the area where horizontal and vertical lines connect along with switches hubs and equipment?

Cross connects.

What does UTP stand for?

Unshielded twisted pair.

What is the characteristic impedance of UTP

100 ohms

What does SCTP stand for

Screened twisted pair

What does STP stand for?

Shielded twisted pair

Besides twisted pair, what are the other two types of network cables?

Coaxial and fiber optic.

How does STP different from SCTP?

Screened only has a mylar foil screen around all of the conductors as a whole.

Shielded as every pair individually shielded as well as a screen around all.

When is the length that can be run for a coaxial cable?

500 meters

What does the coaxial cable do better than any other?

High frequency performance.

What are the two types of coaxial styles and which one is better?

RG6 - much better

RG59

What does a fiber optic cable use instead of electric pulses?

IR Light, Photons

What is the most difficult part of installing a fiber optic cable?

Difficult to splice. Need special training

Name the two different types of fiber optic cables?

Multimode

Single mode

Which type of fiber optic cable is better for long distances?

Which is better for higher bandwidth?

Single mode long distance

Multimode more bandwidth

What do these symbols mean?

Wall mounted “Voice/data. Data. Voice”

Floor “Voice/data. Data. Voice”

When installing conduits how many feet can we have between pull points?

How many bends can we have?

What is our maximum fill?

100 ft.

2 90 degree bends

40% fill

When using a cable tray what is our highest fill ratio?

How much clearance do we need above the cable tray for access?

50%

1 foot (300mm)

How much pulling tension can we use when pulling cable?

25 lbs

How far away should our cables be from power sources?

3” minimum

What do we call the termination for the twisted pair wires?

IDC - insulation displacement contact

What are the three types of punch down blocks?

66 punch down block.

110 punch down block.

Bix punch down block.

Patch panels.

What acronym should we remember to identify pairs and conductor colours?

BLOGB

Blue orange green brown

Blue T1 White with blue

F1 Blue with white

Orange T2 White with orange

F2 Orange with white

Etc

What are the connectors called for twisted pair?

RJ45 Jack female end

RJ45 plug male end

What are the two types of connectors on the end of a coaxial cable?

BNC connector.

F connectors. For homeowners

What is the total distance from Jack to Jack allowable?

90m

100m total passed jacks

What are the two tests we conduct on a cable?

Channel test

Permanent link test

What are the three tools we can use to test our wiring?

Tone generator, wire mapper, certification field tester (cable analyzer)

What is the term used when wires unintentionally share data between the twisted pairs

Crosstalk

When measuring our crosstalk when are we measuring for?

ACR

Attention to crosstalk ratio. How much more signal than noise exists in the link.

Larger decibel is better.

What is Next and Fext and what do we want to read when measuring them?

Near end cross talk

Far end cross talk

Larger decibels is Better

When measuring attenuation when measurement do we want to get?

Small decibels!