CONVERSATION WITH
FRIEND ABOUT SYSTEM ARCHITECTURE
Last night I had conversation with my friend. she is working with TCS and doesn’t know about the computer architecture and I had explained to
her.
Me: hii, how are you??
Nikky: Fine, how’s the MBA life
Me: Good, it’s busy life
Nikky: ok.what about studies??
Me: good .hey do you know about computer architecture as
your were working in TCS
Nikky: No, I don’t know anything
Me: Do you know about the terms application, server etc..,
Nikky: yup..
Me: Good..Basically, Computer Architecture are of 3 types
Single-Tier
Architecture
Two-Tier
Architecture
Three-Tier
Architecture
In Single-Tier Both the Data and application resides on the
same machine whereas in Two-Tier the data is separated from application. In
this type of Architecture CLIENT-SERVER and CLIENT MACHINES are present. The
common data that is used by all is stored in a common machine called the SERVER
and each user has a copy of application on their own machine , called CLIENT
MACHINES.
Nikky:yeah..but in our office, I think we use Multi-Tier architecture.
Me:
Great..I will Explain to you. Three-Tier consists of essentially three
layers - client, business logic server and the central data server all connected
through a WAN (Wide Area Network).I will give you an example: An ERP
product-like SAP, that is used in large number of corporations is a perfect
example.
And in Multi-Tier Web browser comes into play between the
application server and the user. There is no need to install the software in
each system. We can use it through Web
browser.
Nikky: How can you protect these things from hackers??
Me: Firewall servers protects from unauthorised computers.
The firewall servers stand as gatekeepers between the public internet and
company’s LAN.
Nikky: Oh great,, thank you catch you later bye good night
Me: Good night..
ok
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