1 CISCO NETWORKING ACADEMY PROGRAM (CNAP) SEMESTER 1/ MODULE 5 Cabling LANs and WANs

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CISCO NETWORKING ACADEMY PROGRAM (CNAP)SEMESTER 1/ MODULE 5

Cabling LANs and WANs

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CISCO NETWORKING ACADEMY PROGRAMSEMESTER 1/ MODULE 5

Networking Fundamentals

Objectives

• Upon completion of this module, the student will be able to perform tasks related to the following:

• Cabling the LAN

• Cabling the WAN

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LAN Physical Layer

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Ethernet in the Campus

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Ethernet Media & Connector

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Connection Media

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UTP Implementation

• Order of the wires in must follow EIA/TIA-T568-A or T568-B standards• Three types of patch cables:

• Straight-though cable•Switch to router •Switch to PC or server •Hub to PC or server

• Crossover cable•Switch to switch•Switch to hub •Hub to hub •Router to router •PC to PC •Router to PC

• Rollover cable•console cable

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UTP Implementation

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Repeaters

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Hubs

• multiport repeaters (generally have from two to twenty-four ports)

• data arriving over the cables to a hub port is electrically repeated on all the other ports connected to the same network segment, except for the port on which the data was sent

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Bridges

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Switches

• Sometimes described multiport bridges

• Operate at data link layer of OSI reference model

• Switches use gathered information to build forwarding tables to determine the destination

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Switches

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Wireless

• Wireless signals are electromagnetic waves that travel through the air• Wireless networks use Radio Frequency (RF), laser, infrared (IR), or

satellite/microwaves to carry signals from one computer to another without a permanent cable connection

• Two most common wireless technologies used for networking are:

• IR - line of sight• RF - out of sight, two

approaches used to implement spread spectrum for WLAN transmissions are Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence Spread Spectrum (DSSS)

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Host Connectivity

• Host can connect to network using Network Interface Card (NIC)

• NIC is layer-2 device and each NIC carries a unique code called MAC address

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Peer-to-peer & Client-server

• Peer-to-peer

• networked computers act as equal partners, or peers

• users control their own resources

• Client-server

• server is a central computer that respond to requests from clients for file, print, application, and other services

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Peer-to-Peer VS Client/Server

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Peer-to-Peer VS Client/Server

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WAN Physical Layer

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WAN Serial Connection

DTE: Data Terminal Equipment

DCE: Data Communications Equipment

CSU: Channel Service Unit

DSU: Data Service Unit

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Routers and Serial Connections

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port type slot number / port number

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Routers and ISDN BRI Connections

• With ISDN BRI, two types of interfaces may be used, BRI S/T and BRI U

• A BRI interface with an integrated NT1 is labeled BRI U

• A BRI interface without an integrated NT1 is labeled BRI S/T

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Routers and DSL Connections

• To connect a router for DSL service, use a phone cable with RJ-11 connectors.

• DSL works over standard telephone lines using pins 3 and 4 on a standard RJ-11 connector.

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Routers and Cable Connections

• Coaxial cable and a BNC connector are used to connect the router and cable system

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Setting Up Console Connections

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Summary

Documents

1 CISCO NETWORKING ACADEMY PROGRAM (CNAP) SEMESTER 1/ MODULE 5 Cabling LANs and WANs