Thursday, February 19, 2009

Enrique's Songs Lyrics

Hero : -

Let me be your hero

Would you dance if I asked you to dance?
Would you run and never look back
Would you cry if you saw me crying
Would you save my soul tonight?

Would you tremble if I touched your lips?
Would you laugh oh please tell me these
Now would you die for the one you love?
Hold me in your arms tonight?

(Chorus)
I can be you hero baby
I can kiss away the pain
I will stand by you forever
You can take my breath away

Would you swear that you'll always be mine?
Would you lie would you run away
Am I in to deep?
Have I lost my mind?
I don't care you're here tonight

Chorus

I just want to hold you (2x)
Am I in too deep?
Have I lost my mind?
Well I don't care you're here tonight

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Escape : -
(You can run, you can hide
But you can't escape my love)

Here's how it goes, you and me, up and down at this time
We'll get right, where to fight
Cause love is something you can't shake
When it breaks
All it takes is some trying

If you feel like leaving
I'm not gonna make you stay
Soon you'll be finding
You can run, you can hide
But you can't escape my love
You can run, you can hide
But you can't escape my love

So if you go
You should know
It's hard to just forget the past to pass
It was good, it was bad but it was real
And that's all you get in the end of the matter

Here's how it goes
All it takes is some trying
You can run, you can hide
But you can't escape my love

Open Systems Interconnection Model (OSI)

Open Systems Interconnection Model : -

The OSI model is the basic model describing the data movement through a network. The Open Systems Interconnection (OSI) reference model describes how information from a software application in one computer moves through a network medium to a software application in another computer. The OSI reference model is a conceptual model composed of seven layers, each specifying particular network functions. The OSI model divides the tasks involved with moving information between networked computers into seven smaller, more manageable task groups. A task or group of tasks is then assigned to each of the seven OSI layers.

The following list details the seven layers of the Open System Interconnection (OSI) reference model:

  • Layer 7—Application layer (A)
  • Layer 6—Presentation layer (P)
  • Layer 5—Session layer (S)
  • Layer 4—Transport layer (T)
  • Layer 3—Network layer (N)
  • Layer 2—Data Link layer (D)
  • Layer 1—Physical layer (P)

Tip To Remember

People Do Need To Send Packets Away.
The first letter of each word is related to the alphabet associated with the name of the OSI layer. P of People stands for Physical Layer of the OSI model and so on.

Protocol

The OSI model provides a conceptual framework for communication between computers, but the model itself is not a method of communication. Actual communication is made possible by using communication protocols. In the context of data networking, a protocol is a formal set of rules and conventions that governs how computers exchange information over a network medium. A protocol implements the functions of one or more of the OSI layers. A wide variety of communication protocols exist, but all tend to fall into one of the following groups: LAN protocols, WAN protocols, network protocols, and routing protocols. LAN protocols operate at the network and data link layers of the OSI model and define communication over the various LAN media. WAN protocols operate at the lowest three layers of the OSI model and define communication over the various wide-area media. Routing protocols are network-layer protocols that are responsible for path determination and traffic switching. Finally, network protocols are the various upper-layer protocols that exist in a given protocol suite.

This being the beginning session, I haven’t dwelled into the details. Lets start small and end big! So till then get these fundamentals ingrained in your mind.

Networks Type.

1 : LAN
2 :
WAN
3 :
MAN


LAN

LAN stands for Local Area Network. These networks evolved around the PC revolution. LANs enabled multiple users in a relatively small geographical area to exchange files and messages, as well as access shared resources such as file servers.

WAN

WAN stands for Wide Area Network. The interconnection of various LAN’s through telephone network, which unites geographically distributed users is achieved through WAN. In short when we log on to the internet, we become a part of a WAN.

MAN

MAN stands for Metropolitan Area Network. It is usually the interconnection between various LAN’s in a particular geographical area like a metropolitan city like Bombay. Hence the name.

Internetworking evolved as a solution to three key problems: isolated LANs, duplication of resources, and a lack of network management. Isolated LANs made electronic communication between different offices or departments impossible. Duplication of resources meant that the same hardware and software had to be supplied to each office or department, as did a separate support staff. This lack of network management meant that no centralized method of managing and troubleshooting networks existed.

Wednesday, February 18, 2009

Basic About Network

An internet work is a collection of individual networks, connected by intermediate networking devices, that functions as a single large network. The networking devices are the vital tools for communication. Whenever you have a set of computers or networking devices to be connected, you make the connections, depending on the physical layout and your requirements Depending on the physical layout or topology of the network, there are three types of networks.