NETWORK ADAPTERSNETWORK ADAPTERSAND CABLINGAND CABLING

OBJECTIVES

Identify a network interface cardLink the network interface card and

the PCConfigure the network cardIdentify network cable typesIdentify standard network interfaces..

Network Interface Card

to expansion slot in PC

T-connector

Cable

Cable

NETWORK ADAPTERNETWORK ADAPTER

Also called a network interface card or NIC

NETWORK ADAPTER Networking Basic Hardware

• Required to move the serial signals on the network cables, or media, into the parallel data stream inside the PC

• Fits into an expansion interface slot

NETWORK ADAPTERLinking the Adapter to the PC

• Modern network adapters use one of 4 techniques to move data between the adapter board and the PC: Programmed I/O Direct Memory Access (DMA) Shared Memory Bus Mastering

CABLESTypes of Cable

• Coaxial Cable

• Unshielded Twisted Pair (UTP)

• Shielded Twisted Pair (STP)

• Fibre Optic Cable

CABLES - Coaxial

• Like TV cable in your house

• Usually copper wire core with plastic coating and a metal braid around it

• THIN– RG/58 - used in most modern coax installs

• THICK– RG/11 - used in older coax installs– Not practical in modern environment– AKA Frozen Garden Hose

CABLESCoaxial

Copper Wire Conductor

InnerInsulation

Layer

Braided orFoil Conductor

OuterInsulation

Layer

CABLESUnshielded Twisted Pair (UTP)

• Looks like common telephone wire

• Uses an RJ 45 connector

• Probably the most common cabling used today in new installs

• Made up of pairs of coated wires (twisted to reduce noise and interference) inside a thin jacket

Level Maximum Use Data Rate

1 0 MBPS Low quality - use only for telephone applications

2 5 MBPS Use only for telephone applications

3 16 MBPS Use for 4 MBPS Token Ring or 10Base-T Ethernet

4 20 MBPS Use for 16 MBPS Token Ring or 10Base-T Ethernet

5 100 MBPS Use for Token Ring, 10BaseT and all new 100 MBPS LANs

CABLESCABLESUTP CategoriesUTP Categories

Copper WireConductors

(in pairs)

Foil Insulation

(if shielded)

Outer Insulation Layer

CABLESCABLESTwisted PairTwisted Pair

CABLESShielded Twisted Pair (STP)

• Heavy twisted pair wiring

• Used in some older IBM Token Ring Installations

• Not used much anymore

CABLES Fibre Optic Cable

• High speed optical cable containing two glass pipes for digital transmission

• Uses a light source instead of electricity as a means of signaling

• Used in very high speed communications (data or phone)

CABLESFibre-Optic

Loose-Tube Cable

Outer Jacket

Steel Tape Armor

Inner Jacket

AramidStrength Member

Binder

Interstitial Filling

Central Member(Steel Wire or Dielectric)

Gel FilledBuffer Tube

Coated Fibre

WIRING CENTRESWIRING CENTRESConcentrators or HubsConcentrators or Hubs

Wires are physically arranged in star topology

Can combine fibre optic, 10BaseT and Token Ring cabling

Usually located in the building’s wiring closet

WIRING CENTRESWIRING CENTRESAdvantagesAdvantages

The hub isolates the runs of network cabling from each other

Wiring is easier to install than in a bus topology

Fewer wires run to each network node Easier to move PCs and change

connections

File Server

Workstation

Workstation Workstation

Concentrator

HUBSHUBS

WIRING CENTRESWIRING CENTRESPatch PanelsPatch Panels

Wiring Layout

[HUB]<=====>[PANEL]+==========+[WALL]<=====>[STATION]

Where ... HUB = concentrator PANEL = RJ-45 Modular Patch PanelWALL = User area wall face plate

STATION = User workstation network adapter with RJ-45 connector =====> = RJ-45 connector

BNCT-Connector

Repeater

BNCBarrel

Connector

Wall PlugGroundedBNC Terminator

BNCTerminator

MaximumLength:607 ft

LAN STANDARDSLAN STANDARDSThin Ethernet NetworkThin Ethernet Network

Workstation

10BASE-T NETWORKHub

Workstation

File Server

Printer

REFERENCES

http://wwwhost.ots.utexas.edu/ ethernet/ethernet-home.html

http://www.lainet.com/cdi/novgloss.htmhttp://www.rain.org:80/~eds/toc.htm