Copy of Itm Presentation

8/8/2019 Copy of Itm Presentation

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DARTMOUTH situation analyzedDARTMOUTH situation analyzed

Very huge campus, with 161 buildingsVery huge campus, with 161 buildingscomprising of 1000 rooms( LEASTcomprising of 1000 rooms( LEAST

COMMUNICABILITY).COMMUNICABILITY). Operating & maintenance system withOperating & maintenance system with

wire lines computer was a problem.wire lines computer was a problem.

Time was the limitation, repairingTime was the limitation, repairinggenerally takes lot of time in the wire linegenerally takes lot of time in the wire linesystem.system.


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presentpresent

Students are developing newStudents are developing newapplications for Wiapplications for Wi--Fi, i.e., gamesFi, i.e., gamesand personaland personal--security devices.security devices.

InternetInternet--enabled cell phones andenabled cell phones andPDAs are on the increase, as is thePDAs are on the increase, as is theuse of SMS and wirelessuse of SMS and wireless--basedbasedteaching methods.teaching methods.


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Students come up with brilliant ideas using wiStudents come up with brilliant ideas using wi--fi e.g.fi e.g.Innovation of personal security device that pin points theInnovation of personal security device that pin points thelocation of campus emergency services to once mobilelocation of campus emergency services to once mobiledevice.device.

Every information is simply a button away.Every information is simply a button away.

Emergence of greater use new tech cell phones &Emergence of greater use new tech cell phones &laptops. Students becoming techlaptops. Students becoming tech--savvy.savvy.

Communication gap is a word of past.Communication gap is a word of past.

The lead time in academics procedures has reduced to aThe lead time in academics procedures has reduced to agreater extent.greater extent.

WiWi--fi has dissolved the boundaries ,students have accessfi has dissolved the boundaries ,students have accessto entertainment packages of any country.to entertainment packages of any country.


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GROUP ANALYSIS..GROUP ANALYSIS..

Internet made world a very small placeInternet made world a very small placebut the emergence of wibut the emergence of wi--fi hasfi has

transformed the world into a globaltransformed the world into a globalvillage.village.

Availability of internet in the comfortAvailability of internet in the comfortzones of studentszones of students

saves time & energysaves time & energy


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q2q2

Wireless networks and their devices willWireless networks and their devices willbecome as commonbecome as common--place as cell phonesplace as cell phones

and iPODS.and iPODS. Some will complain about the intrusion ofSome will complain about the intrusion of

wireless systems into their lives with thewireless systems into their lives with theresulting loss of privacyresulting loss of privacy


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OpinionOpinion

PROS.PROS. The ubiquitous access to content, thatThe ubiquitous access to content, that

wireless can provide, can improvewireless can provide, can improvelearning.learning.

Wireless can contribute to improvedWireless can contribute to improvedlearning if the appropriate content islearning if the appropriate content isdeveloped.developed.

Sophisticated wireless games can provideSophisticated wireless games can providelearning opportunities under the guise oflearning opportunities under the guise ofplay.play.


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CONTD..CONTD..

Improved social networking ( ideasImproved social networking ( ideasfloatation)floatation)

More connected to outside worldMore connected to outside world

Exposure to new technologiesExposure to new technologies

Improving knowledge baseImproving knowledge base

No. of entrepreneurs has increased due toNo. of entrepreneurs has increased due to

risk hedging e.g.risk hedging e.g.-- yahoo, Google, eyahoo, Google, e--baybay Students can go for reservations, paymentStudents can go for reservations, payment

of bills, trading, in a nick of timeof bills, trading, in a nick of time


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CONSCONS

DIVERSIONDIVERSION TIME CONSUMINGTIME CONSUMING

LOWER CONCENTRATION LEVELS (library)LOWER CONCENTRATION LEVELS (library)

POOR READING SKILLSPOOR READING SKILLS

More exposure to unnecessary stuff at tender age.More exposure to unnecessary stuff at tender age. Due to easy access to internet students tend to involve inDue to easy access to internet students tend to involve in

activities like harrasing ,teasing, lewd comments etcthroughactivities like harrasing ,teasing, lewd comments etcthroughemails in the name of entertainment.emails in the name of entertainment.

Due to long hours of sitting infront of the system causes neckDue to long hours of sitting infront of the system causes neck

arrest, stress, headache, backpain, burning of eyes.arrest, stress, headache, backpain, burning of eyes.


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QUESTION 4QUESTION 4

Wireless systems gives the students the flexibility to accessWireless systems gives the students the flexibility to accessinformation and einformation and e--mail from anywhere at any time. This abilitymail from anywhere at any time. This abilitymoves students out of the dorm rooms and libraries and allowsmoves students out of the dorm rooms and libraries and allowsthem to access the entire campus.them to access the entire campus.

Wireless systems provide users with access to realWireless systems provide users with access to real--timetimeinformation anywhere in their organization. This mobility supportsinformation anywhere in their organization. This mobility supportsproductivity and service opportunities not possible with wiredproductivity and service opportunities not possible with wirednetworks.networks.

Added mobility leads to greater interaction that enhances learning.Added mobility leads to greater interaction that enhances learning.

Wired network are likely to remain for a long time because theyWired network are likely to remain for a long time because theyoffer greater speed and higher availability.offer greater speed and higher availability.


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contd(4)..contd(4)..

Wireless system is more cost effective comparedWireless system is more cost effective comparedto wire line systemsto wire line systems


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Wireless LANs offer the following productivity, convenience,Wireless LANs offer the following productivity, convenience,and cost advantages over wired networks:and cost advantages over wired networks:

There are now thousands of universities, hotels and public places with publicThere are now thousands of universities, hotels and public places with publicwireless connection. These free you from having to be at home or at workwireless connection. These free you from having to be at home or at workto access the Internet.to access the Internet.

Installation Speed and Simplicity: Installing a wireless LAN system can beInstallation Speed and Simplicity: Installing a wireless LAN system can befast and easy and can eliminate the need to pull cable through walls andfast and easy and can eliminate the need to pull cable through walls andceilings.ceilings.

Reduced CostReduced Cost--ofof--Ownership: While the initial investment required forOwnership: While the initial investment required forwireless LAN hardware can be higher than the cost of wired LAN hardware,wireless LAN hardware can be higher than the cost of wired LAN hardware,overall installation expenses and lifeoverall installation expenses and life--cycle costs can be significantly lower.cycle costs can be significantly lower.LongLong--term cost benefits are greatest in dynamic environments requiringterm cost benefits are greatest in dynamic environments requiringfrequent moves and changes.frequent moves and changes.

ss Scalability: Wireless LAN systems can be configured in a variety ofScalability: Wireless LAN systems can be configured in a variety of

topologies to meet the needs of specific applications and installations.topologies to meet the needs of specific applications and installations.Configurations are easily changed and range from peerConfigurations are easily changed and range from peer--toto--peer networkspeer networkssuitable for a small number of users to full infrastructure networks ofsuitable for a small number of users to full infrastructure networks ofthousands of users that enable roaming over a broad area.thousands of users that enable roaming over a broad area.


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TECHNICAL ADVANTAGESTECHNICAL ADVANTAGES

WiFi uses unlicensed radio spectrum and does not require regulatoryWiFi uses unlicensed radio spectrum and does not require regulatoryapproval for individual deployers.approval for individual deployers.

It allows local area networks (It allows local area networks (LANsLANs) to be setup with cabling. The can) to be setup with cabling. The canreduce associated costs of network connection and expansions. Placesreduce associated costs of network connection and expansions. Placeswhere cables cannot be run, such as outdoor areas and historical buildingswhere cables cannot be run, such as outdoor areas and historical buildingscan use wireless LANs.can use wireless LANs.

WiFi products are extensively available in the market. There are differentWiFi products are extensively available in the market. There are differentbrands of access points and user's network interfaces are able to interbrands of access points and user's network interfaces are able to inter--operate at a very basic service level.operate at a very basic service level.

Prices are considerably lower as competition amongst vendors' increases.Prices are considerably lower as competition amongst vendors' increases. WiFi networks can support roaming. This allows mobile users withWiFi networks can support roaming. This allows mobile users with laptoplaptop

computercomputer to be able to move from one access point to another.to be able to move from one access point to another. Numerous access points and network interfaces support various degrees ofNumerous access points and network interfaces support various degrees of

encryption to protect traffic from interception.encryption to protect traffic from interception.

WiFi has a set of global standards. Not like the cellular carriers, the sameWiFi has a set of global standards. Not like the cellular carriers, the sameWiFi users can work in different countries around the world at all time.WiFi users can work in different countries around the world at all time.


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TECHNICAL DISADVANTAGESTECHNICAL DISADVANTAGES

The use of WiFi band that is 2.4 GHz does not require a license in most countries provided that isThe use of WiFi band that is 2.4 GHz does not require a license in most countries provided that isstays below limit of 100mW and one accepts interference from other sources; includingstays below limit of 100mW and one accepts interference from other sources; includinginterference which causes the users devices to no longer function.interference which causes the users devices to no longer function.

The spectrum assignments and operational limitations are not consistent worldwide.The spectrum assignments and operational limitations are not consistent worldwide. Power consumption is fairly high compared to some other standards, making the battery life andPower consumption is fairly high compared to some other standards, making the battery life and

heat a concern to some users.heat a concern to some users.

WiFi uses the unlicensed 2.4GHz spectrum, which often crowded with other devices such asWiFi uses the unlicensed 2.4GHz spectrum, which often crowded with other devices such asBluetooth, microwave ovens, cordless phones, or video sender devices, and among many others.Bluetooth, microwave ovens, cordless phones, or video sender devices, and among many others.This may cause degradation in performance.This may cause degradation in performance.

WiFi networks have limited range. A typical WiFi home router might have a range of 45m (150ft)WiFi networks have limited range. A typical WiFi home router might have a range of 45m (150ft)indoors and 90m (300ft) outdoors. Ranges may also vary as WiFi is no exception to the physicsindoors and 90m (300ft) outdoors. Ranges may also vary as WiFi is no exception to the physicsof radio wave propagation with frequency band.of radio wave propagation with frequency band.

The most common wireless encryption standard, wired equivalent privacy or WEP has beenThe most common wireless encryption standard, wired equivalent privacy or WEP has beenshown to be breakable even when it has been correctly configured.shown to be breakable even when it has been correctly configured.

Access points could be used to steal personal and confidential information transmitted from WiFiAccess points could be used to steal personal and confidential information transmitted from WiFi

consumers.consumers. Intervention of a closed or encrypted access point with other open access points on the same orIntervention of a closed or encrypted access point with other open access points on the same or

a nearby channel can prevent access to the open access points by others in the area. It poses aa nearby channel can prevent access to the open access points by others in the area. It poses ahigh problem in highhigh problem in high--density areas such as large apartment blocks where many residents aredensity areas such as large apartment blocks where many residents areoperating WiFi access points.operating WiFi access points.

InterInter--operability issues between brands or deviations can cause limited connection or loweroperability issues between brands or deviations can cause limited connection or loweroutput speeds.output speeds.

Free access points can be used by the malicious to anonymous to initiate an attack that would beFree access points can be used by the malicious to anonymous to initiate an attack that would be

extremely difficult to track beyond the owner of the access point.extremely difficult to track beyond the owner of the access point.


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Wi-fi antenna.. How it looks


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A roof mounted with wi-fi antenna


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A key chain size wi-fi detector


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Wi-fi card widely used by wireless internet sevice providers


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Access points & UMTS/ GSM gateway in one device


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USB WIRELESS ADAPTER


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Embedded serial to wi-fi module especially for home


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Antenna on light poll inside campuses

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Copy of Itm Presentation