Basic Network (2)

8/3/2019 Basic Network (2)

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Basic Network ServicesBasic Network Services

ARPIT JAINARPIT JAIN

ARCHANA TIWARIARCHANA TIWARI


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PRESENTATION OVERVIEWPRESENTATION OVERVIEW

* INTRODUCTION.* INTRODUCTION.

* Purpose of networking.* Purpose of networking.

* Types of Networks.* Types of Networks.

* How Networking work.* How Networking work.

* Network topologies.* Network topologies.

* Components Of Networks.* Components Of Networks.* Advantages & Disadvantages.* Advantages & Disadvantages.


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INTRODUCTIONINTRODUCTION

Acomputer network simply referred to as anetwork, is acollection ofcomputersand devices connected bycommunications channels that facilitates communicationsamong users and allows users to share resources withother users.

In a network environment, any authorized usercan access data and information stored on other

computers on the network. The capability ofproviding access to data and information onshared storage devices is an important feature ofmany networks.

.


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PURPOSE OF NETWORKINGPURPOSE OF NETWORKING

1- Facilitating

communications

2- Sharing files, data, and

information

3- Sharing software.


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TYPES OF NETWORKTYPES OF NETWORK

WIRED NETWORKWIRED NETWORK

WIRELESS NETWORKWIRELESS NETWORK

.


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WIRED NETWORKWIRED NETWORK

Wired networksWired networksprovide users withprovide users withplenty of securityplenty of securityand the ability toand the ability tomove lots of datamove lots of data

very quickly.very quickly.

Wired networks areWired networks aretypically faster thantypically faster thanwireless networks,wireless networks,

and they can beand they can bevery affordable.very affordable.

C o n n e c t i n g w i t h X p r o t o c o l; r e a d y t o r e c e i v e i n s t r u c t i o

o r m e s s a g e?

Y e s, I'm r e a d y t o r e c e i v e m e s s a g e(a c k)

S e n d m e s s a g e o r i n s t r u c t i o n


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WIRELESS NETWORKWIRELESS NETWORK

WirelessWireless

Network areNetwork are

easier to useeasier to useand workand work

with.with.

Wi- Fi is bestWi- Fi is best

Example ofExample ofwirelesswireless

network.network.


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CATEGORIES OF NETWORKCATEGORIES OF NETWORK

LANLAN

MANMAN

WANWAN


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LANLAN

LOCAL AREA NETWORKLOCAL AREA NETWORK

A network of computers that are in the sameA network of computers that are in the same

physical location, such as home or buildingphysical location, such as home or building


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MANMAN

METRPOLITAN AREA NETWORKMETRPOLITAN AREA NETWORK

It is designed to extend over an entire cityIt is designed to extend over an entire city..


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WANWAN

WIDE AREA NETWORKWIDE AREA NETWORK IT is designed to extend over large geographicalIT is designed to extend over large geographical

area that may comprise a country,a continent orarea that may comprise a country,a continent or

even the whole world.even the whole world.


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IPv6IPv6

IPv4IPv4 IPv6IPv6

Addresses are 4 bytes inAddresses are 4 bytes in

lengthlengthAddresses are 16 bytes inAddresses are 16 bytes in

lengthlength

Security OptionalSecurity Optional Security RequiredSecurity Required

Header includes optionsHeader includes options Extension headersExtension headers

(extensibility)(extensibility)

Address Resolution ProtocolAddress Resolution Protocol

(ARP)(ARP)Neighbor SolicitationNeighbor Solicitation

MessagesMessages

Configured manual or viaConfigured manual or via

DHCPDHCPDoes not require manual orDoes not require manual or

DHCP configurationDHCP configuration

Must support a 576-byteMust support a 576-byte

packet size (possiblypacket size (possibly

fragmented).fragmented).

Must support a 1280-byteMust support a 1280-byte

packet size (withoutpacket size (without

fragmentation).fragmentation).

There are 14 key differences between IPv4 andThere are 14 key differences between IPv4 and

IPv6, some of the key differences are:IPv6, some of the key differences are:


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NETWORKING DEVICESNETWORKING DEVICES

HUBHUB

SWITCHSWITCH BRIDGEBRIDGE

ROUTERROUTER

GATEWAYGATEWAY


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HUBHUB

It is a device forIt is a device for

connecting multipleconnecting multiple

Ethernet devicesEthernet devices

and make them actand make them actas single networkas single network

segment.segment.

HUBHUB

. . .


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SWITCHSWITCH

Generally referredGenerally referred

to as Bridges thatto as Bridges that

processes andprocesses and

routes data at dataroutes data at datalink layer of OSIlink layer of OSI

modelmodel

SWITCHSWITCH

. . .


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BRIDGEBRIDGE

Bridges can divideBridges can divide

large network intolarge network into

smaller segments.smaller segments.

. . .


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ROUTERSROUTERS

These devices areThese devices are

used toused to

route and forwardroute and forward

information/packetinformation/packets. Routers connects. Routers connect

two or more logicaltwo or more logical

subnetssubnets

. . .


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GATEWAYGATEWAY

It can accept aIt can accept a

packet formattedpacket formatted

for one protocolfor one protocol

and convert it to aand convert it to apacket formattedpacket formatted

for anotherfor another

protocolprotocol

. . .


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ADVANTAGESADVANTAGES

/DISADVANTAGES/DISADVANTAGES

ADVANTAGESADVANTAGES

1.1. File Sharing.File Sharing.

2.2. Printer/PeripheralPrinter/Peripheral

sharing.sharing.3.3. Internet connectionInternet connection

sharing.sharing.

4.4. Facility of multi playerFacility of multi player

games.games.

DISADVATAGESDISADVATAGES

1.1. Security Issues.Security Issues.

2.2. Expensive set up.Expensive set up.

3.3. Dependency on theDependency on themain file server.main file server.

4.4. Rapid spread ofRapid spread of

computer viruses.computer viruses.


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THANK YOUTHANK YOU

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Basic Network (2)