6. Network
• When two or more autonomous computers are
interconnected in such a way that they can share
information and resources to achieve better
performance , it is called network
• When such sharing takes place at global level , it
is called internet
• Using www technology , internet constructs the
Information System (IS) .IS helps the organization
to achieve the automation and standardization
7. Internet
• Complex Network-More than 150 Million
interconnected computers
• Disorganized
• Decentralized System- Millions of distinct
networks are connected globally
• Extensive usage
• Wide scope – sharing files , mail ,chat ,
downloads , e commerce , streaming movies &
music , video conferencing etc
• Exponential Growth
8. Components of Internet
• Clients , Servers and Networks
• TCP/IP- Transmission Control Protocol /Internet
Protocol
• Bandwidth
• WWW- World Wide Web- http /html- supports
graphic, audio and video files
• Web Browser –URL (Uniform Resource Locator)
• FTP
• Chat
• Search Engines
10. Basics of Doing Business on the
Internet
Example of IT Architecture of an E-Business –Many Elements
11.
12. Internet , Intranet and Extranet
• Internet – e Commerce
• Intranet – Secure use of Internet for
company’s own employees like use of Sales
CRM , Support CRM , Finance CRM,HRM etc
• Extranet – Secure use of Internet for use of
limited part of CRM , ERP and SCM by
company’s dealers ,suppliers , franchisee ,
business partners etc
14. Internet Services-
Communications Services
• Usenet – Network providing discussion groups.
User can post article in a chosen newsgroup on
the Usenet.Each newsgroup is specialized in
particular topic such as politics, environment etc
• Telnet – A command to connect the user and
remote machines ( located anywhere on
internet).After connection is established , user
can type and execute commands on remote
machine
15. Internet – Information Retrieval
• FTP – File transfer protocol allows transfer of files
from one computer to another in any format –
text ,graphics ,sound etc in client –server
relationship. Whatever can be stored in a
computer can be moved with FTP service.
• Archie –Among 1st Search tool on internet ,
searches anonymous FTP servers and recognizes
all files available on these servers from time to
time , creates a central database . To access
Archie Server , users use Telnet
16. Internet-Information Retrieval
• Gopher –Menu based interface tool to
retrieve information from internet, provides
easy access to information on special servers
known as Gopher sites. Primarily Gopher does
same job as FTP command , its interface is
user friendly and is menu driven
• Veronica – Internet tool for searching items on
Gopher menu .With help of Veronica Server
,any user can easily access any database
23. Cloud Computing
• Type of computing that relies on sharing
computing resources rather than having local
servers or personal devices to handle
applications
• Type of Internet based computing where
different services such as servers , storage and
applications are delivered to an organization's
computers and devices
26. Cloud Pricing Components
• Infrastructure- Space , Electricity , Internet
• Server – Hardware Shared /Dedicated
• Manpower – Administrative & Technical
• Software
• Internet bandwidth – Every customer
transaction consumes bandwidth
27. Cloud Models
• SAAS – Software as a Service – Complete application is
offered to customer as a service on demand- Google ,
Salesforce , Zoho etc
• PAAS – Platform as a Service . Development environment is
offered as a service on which higher levels of service can be
built .Customer has freedom to build his own applications
which runs on Cloud Providers infrastructure. Ex OS and
Application Servers like LAMP , J2EE, Ruby ,Google’s App
Engine , Force.com etc
• IAAS- Infrastructure as a Service- Provides storage and
computing capabilities as standardized service .Customer
would deploy his own software on the infrastructure .Ex
Amazon , Azure , Google , GoGrid , 3 Tera etc
29. Types of Cloud Computing
• Public Cloud –Owned and Operated by third
parties , providing users low cost , pay as you
grow model. All customers share the same
infrastructure provides by cloud provider
• Private Cloud – Built exclusively for single
enterprise . Address concern of data security ,
can be On Premise or External Hosted
• Hybrid Cloud –Combination of Public and
Private Cloud
