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guide

NeTWORKING

Community Internet Cafe 2004

World In Need Philippines  Asian Internet Bible Institute  Philippine Mission Association


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networking guide

community internet café

What is a Network?

  • consists of two or more computers that are

  • linked in order to share resources

  • (such as printers and CD-ROMs),

  • exchange files, or allow electronic

  • communications.

  • linked through cables, telephone lines,

  • radio waves, satellites, or infrared light

  • beams

Networking Guide


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networking guide

community internet café

Basic types of networks:

  • Local Area Network (LAN)

  • - lab, school, building

  • Metropolitan Area Network (MAN)

  • - cities, school districts

  • Wide Area Network (WAN)

  • - regions, states or the world,

  • require transoceanic cabling or

  • satellite uplinks

Networking Guide


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networking guide

community internet café

Advantages

  • Speed

  • Cost

  • Security

  • Centralized Software Management

  • Resource Sharing

  • Electronic Mail

  • Flexible Access

  • Workgroup Computing

Networking Guide


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networking guide

community internet café

Disadvantages

  • Expensive to Install

  • Requires Administrative Time

  • File Server may Fail

  • Cables May Break

Networking Guide


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networking guide

community internet café

What is a Protocol?

  • set of rules that governs the

  • communications between computers

  • on a network.

  • guidelines that regulate the characteristics

  • of a network: access method, allowed

  • physical topologies, types of cabling,

  • and speed of data transfer.

Networking Guide


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networking guide

community internet café

Most common protocols

  • Ethernet

  • LocalTalk

  • Token Ring

  • Fiber Distributed Data Interface(FDDI)

  • Asynchronous Transfer Mode (ATM)

Networking Guide


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networking guide

community internet café

What is a Networking Hardware?

  • Includes all computers, peripherals,

  • interface cards,

  • Other equipment needed to

  • perform data-processing and

  • communications within the

  • network.

Networking Guide


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networking guide

community internet café

Network Hardwares

  • File Servers

  • Workstations

  • Network Interface Cards

  • Connectors/Hubs

  • Repeaters

  • Bridges

  • Routers

Networking Guide


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networking guide

community internet café

What is a Network Cabling?

Cable

- is the medium through which

information usually moves from

one network device to another.

Networking Guide


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networking guide

community internet café

What is a Network Cabling?

  • 1. Unshielded Twisted Pair (UTP) Cable

  • - Unshielded Twisted Pair

  • Connector (RJ-45)

  • 2. Shielded Twisted Pair (STP) Cable

  • 3. Coaxial Cable

  • - Coaxial Cable Connectors (BNC)

  • Fiber Optic Cable

  • - Fiber Optic Connector (ST)

  • 5. Wireless LANs

Networking Guide


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networking guide

community internet café

Installing Cable – Some Guidelines

  • Always use more cable than you need.

  • Leave plenty of slack.

  • Test every part of a network as you

  • install it. Even if it is brand new,

  • it may have problems that will be

  • difficult to isolate later.

  • Stay at least 3 feet away from

  • fluorescent light boxes and other

  • sources of electrical interference.

Networking Guide


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networking guide

community internet café

Installing Cable – Some Guidelines

  • If it is necessary to run cable across

  • the floor, cover the cable with

  • cable protectors.

  • Label both ends of each cable.

  • Use cables ties (not tape) to keep

  • cables in the same location together.

Networking Guide


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networking guide

community internet café

How to Wire a Network

Networking Guide


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networking guide

community internet café


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Cabling: Straight-Through

Networking Guide


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Cabling: Crossed-Over

Networking Guide


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networking guide

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What is a Topology?

  • Refers to the configuration of

  • cables, computers, and other

  • peripherals.

  • Method used to pass information

  • between workstations.

Networking Guide


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networking guide

community internet café

Main types of Physical Topologies

  • LINEAR BUS

  • - consist of a main run of cable with a

  • terminator at each end.

  • - all nodes (file server, workstations,

  • and peripherals) are connected

  • to the linear cable.

Networking Guide


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networking guide

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Advantages of a Linear Bus Topology

  • Easy to connect a computer or

  • peripheral to a linear bus.

  • Requires less cable length than a star

  • topology.

Networking Guide


1100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000011000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000

networking guide

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Disadvantages of a Linear Bus Topology

  • Entire network shuts down if there is a break in the main cable.

  • Terminators are required at both ends of the backbone cable.

  • Difficult to identify the problem if the entire network shuts down.

  • Not meant to be used as a stand-alone

  • Solution in a large building

Networking Guide


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networking guide

community internet café

Main types of Physical Topologies

  • STAR

  • - designed with each node (file server,

  • workstations, and peripherals)

  • connected directly to a central

  • network hub or concentrator.

  • - data on a star network passes

  • through the hub or concentrator

  • before continuing to its destination.

Networking Guide


1100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000011000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000

networking guide

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Advantages of a Star Topology

  • Easy to install and wire

  • No disruptions to the network then

  • connecting or removing devices

  • Easy to detect faults and to

  • remove parts.

Networking Guide


1100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000011000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000

networking guide

community internet café

Disadvantages of a Star Topology

  • Requires more cable length than a

  • linear topology

  • If the hub or concentrator fails,

  • nodes attached are disabled.

  • More expensive than linear bus

  • topologies because of the cost of the

  • concentrators.

Networking Guide


1100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000011000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000

networking guide

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Main types of Physical Topologies

3. STAR-WIRED RING

- externally, may appear to be the

same as a STAR topology.

- internally, the multistation access unit

(MAU) contains wiring that allows

information to pass from one device

to another in a circle or ring.

Networking Guide


1100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000100010000100001001001001000111001111001111000111000111001110011110001111100110011110000111100110010010101000011111101010100111100010001111111100011100011110001111100110010100000111100001001001010100010101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000011000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100001000100001000010010010010001110011110011110001110001110011100111100011111001100111100001111001100100101010000111111010101001111000100011111111000111000111100011111001100101000001111000010010010101000101010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000010101010000111111111000001010101000011111111100000101010100001111111110000

networking guide

community internet café

Main types of Physical Topologies

4. TREE

- combines characteristics of linear bus

and star topologies.

- it consists of groups of star-configured

workstations connected to a linear

bus backbone cable.

- allows expansion of an existing

network.

Networking Guide


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networking guide

community internet café

Advantages of a Tree Topology

  • Point-to-point wiring for individual

  • segments.

  • Supported by several hardware

  • and software vendors.

Networking Guide


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networking guide

community internet café

Disadvantages of a Tree Topology

  • Overall length of each segment is

  • limited by the type of cabling used.

  • If the backbone line breaks, the entire

  • segment goes down.

  • More difficult to configure and wire

  • than other topologies.

Networking Guide


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networking guide

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Considerations When Choosing

A Topology

  • Money.

  • Length of cable needed.

  • Future growth.

  • Cable type.

Networking Guide


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networking guide

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What is a Network Operating System?

There are two major types:

1. Peer-to-Peer

- allow users to share resources and

files located on their computers

and to access shared resources

found on other computers.

Networking Guide


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networking guide

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Advantages of Peer-to-Peer

  • Less initial expense – No need for a

  • dedicated server.

  • Setup – an operating system

  • already in place may only need

  • to be reconfigured for peer-to-

  • peer operations.

Networking Guide


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networking guide

community internet café

Disadvantages of Peer-to-Peer

  • Decentralized – No central repository for

  • files and applications.

  • Security – Does not provide the security

  • available on a client/server network.

Networking Guide


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networking guide

community internet café

What is a Network Operating System?

  • Client/Server

  • - allows network to centralized functions

  • and applications in one or more

  • dedicated file servers.

  • - file servers become the heart of the

  • system, providing access to resources

  • and providing security.

  • - allow multiple users to simultaneously

  • share the same resources irrespective of

  • physical location.

Networking Guide


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networking guide

community internet café

Advantages of Client/Server Network

  • Centralized

  • Scalability

  • Flexibility

  • Interoperability

  • Accessibility

Networking Guide


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networking guide

community internet café

Disadvantages of Client/Server Network

  • Expensive – investment in dedicated

  • server

  • Maintenance – require a dedicated

  • staff to ensure efficient operation

  • Dependence – when server goes

  • down, operation will cease across

  • the network

Networking Guide


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guide

NeTWORKING

Community Internet Cafe 2004

World In Need Philippines  Asian Internet Bible Institute  Philippine Mission Association


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