Q2x

abnormalobeisanceSecurity

Nov 3, 2013 (3 years and 7 months ago)

66 views

Group 5

Andrew, Adrian, Matthew, Raymond

Contents


How Packet Switching & Circuit Switching Works



Packet Switching Vs Circuit Switching



Rich Information Sharing



Limitations of today’s Internet



Services currently available though the web



Different Internet Connections

How Packet Switching works

How Circuit Switching works

Packet Switching
vs

Circuit
Switching


Advantages


Allows multiple devices to communicate on the same network



No circuit or session required prior to data transmission



Timestamps allow for minimal delay and prevention of fraud and
other attacks



Multiple paths make it robust and resilient


Disadvantages


Loss of packets



Limits to Rich Information Sharing


Sharing multimedia


Limiting factors:


Financial


Client equipment


Infrastructure


Technical


Hardware and software


Compression


Social


Privacy

Limitations of today’s Internet


Bandwidth limitation


Factors that will affect the bandwidth


Distance, line quality and technology




QoS

limitation


VoIP

Limitations of today’s Internet(2)


Network architecture limitation


IPv4



Language limitation


HTML, CSS, JavaScript



Wired limitation


Ethernet &
Fiber
-
optic


Services currently available though
the web


Blog


Real Simple Syndication (RSS)


Podcasts


Wikis


Music and audio services


IP Telephony


IP TV


Online software and web services


Telepresence and video conferencing


M
-
Commerce

Blogs


Entries


Personal experiences, observations, or opinions.


Images, videos and links.


Media; photography, videos and

music.


Interactive


Leave comments, message via widgets.




wordpress.org/ and www.blogspot.com/

Real Simple Syndication (RSS)


Syndicates information over the internet


News, sport headlines, videos or audio.


Subscribe to websites


Vs manually visiting


New content automatically published to browser


Podcasts


Series of web based audio or video files released
episodically.


Direct download, streaming or web casting.


Kept centrally in providers’ server as a web feed.




Apple iTunes

store offers many free podcasts.

Wikis


Anyone can create, edit or delete material.


Used for note taking


Community websites, collaborative group websites or
educational websites.


Ward Cunningham (Developer of
WIkiWIkiWeb
)

"the simplest online database that could possibly work”,.



en.
wiki
pedia.org

known worldwide.

Music and Video Services


Video hosting website


Youtube


View, comment on, upload, and share.


Movie trailers


Music videos


Ads


Home made



http://new.music.yahoo.com/


Combination of music and video services,


Primarily focuses on music.

Internet Telephony


Voice over IP (VOIP)


Transmitting the human voice and multimedia session.


Services


Voice, fax, and SMS.


Steps involved in a VoIP call



-

signaling

and media channel setup


-

digitization of
analog

voice



-

encoding



-

packetization



-

transmission over a packet switched network.


Steps reversed on the receiving end.



Popular services include
Skype

and
Ventrillo
.

Internet television
-

IPTV


Television over the Internet.


Types of IPTV services:


live television


time
-
shifted TV (replayed, start
-
over TV)


video on demand (browse a selection programs)



TPG

provides IPTV for customers in TPG covered
areas.

Telepresence and Video
Conferencing


Appear present whilst not actually there.


Affect the remote location,


voice, movements and other actions, sensed,
transmitted and broadcasted to the remote location live.


Face to face conversation.


Cisco

Offers
Telepresence


Services and equipment.

Online software and web services


Web applications


Webmails
, widgets, gadgets, games and news readers.


Popularity


Convenience and ubiquity of web browser


Ability to access, update and maintain the without
software.


M
-
commerce applications


Transactions of funds, goods or services via a mobile device
such as a mobile phone.



M
-
commerce applications allow conduction of such
transactions.


Some application supported services


Mobile Shopping


Mobile Tickets, vouchers, coupons and loyalty cards


Mobile Content purchase and delivery


Mobile Location services


Mobile Information services


Mobile Banking


Mobile Marketing and advertising

Different Internet Connections


Wired Internet


Dial
-
Up


ADSL


Cable (HFC)


Fibre


Wireless Internet


Satellite


Cellular Networks (3G, GSM)

Our Survey


22
participants



We asked:


What were you using 10 years ago?


What were you using 5 years ago?


What are you using now?


Trends

QUESTIONS??