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Chapter 1 : Introduction to Networks

Network Plus Exam : N10-005

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• To build a Network

Computer Cables Network Card

Introduction to network

• Benefits of network

File sharing.

Printer sharing.

Internet connection sharing.

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Introduction to network

Two common types of networks:

Local Area Network (LAN).

Wide Area Network (WAN).

Local Area Network

small area.

School, or building.

Wide Area Network

Connect networks in larger

geographic areas.

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Introduction to network

Network architecture

The two major types of network operating systems are:

Peer-to-Peer

Client/Server

Peer-to-peer

All computers are considered equal.

Same OS.

Advantages:

Less expense.

Setup.

Disadvantages:

Decentralized.

Does not provide the security.

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Introduction to network

Advantages:

Centralized.

Disadvantages :

Expense.

Dependence - When server goes

down, operations will cease

across the network.

Client - Server

Centralize

provide security.

Windows Servers OS.

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Introduction to network

Physical network topologies

The physical topology of a network refers to the configuration of cables, computers.

Linear Bus

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Introduction to network

Linear Bus

Advantages

Easy to connect a computer .

Requires less cable length.

Disadvantages

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

Terminators are required.

Difficult to identify the problem.

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Introduction to network

Star

Advantages

Easy to install and wire.

No disruptions to the network when

connecting or removing devices.

Disadvantages

Requires more cable length.

If the hub, switch, or concentrator fails,

nodes attached are disabled.

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Introduction to network

Ring

Advantages

Token helps to reduces chances of

collision.

all the traffic flows in only one direction

at very high speed.

Disadvantages

Each packet of data must pass through all

the computers.

If one workstation or port goes down, the

entire network gets affected.

MAU’s and network cards are expensive as

compared to Ethernet cards and hubs.

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Introduction to network

Backbone

segment

segment

segment

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Introduction to network

LAN Segment

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Introduction to network

For exam

Know network topologies.

Know advantages and disadvantages of the topologies.

Know the terms LAN and WAN.