Write at HWS !!!

Guest Posting

Thursday, May 26, 2011

COMPUTER NETWORKS :CHAPTER 4



COMPUTER NETWORKS : CHAPTER 4- The OSI model cont.


hello guys .. how u doin !!! its a little hot in here ... grrrr

anyways enough shit
in last chapter we stopped at session layer...wat is the next layer ??
its transport layer

TRANSPORT LAYER


First of all this is the most important layer in my opinion.this layer describes in which manner
or in which way data will b sent across. When you working with this layer you gotta choose how you sending
your data , there are 2 ways
  • RELIABLY
  • UNRELAIBLY
now u may b thinking y in hell one should send data unreliably...well for now
just remember that in reliable transfer its gonna take more time than unreliable transfer.
We(not we , applications) use reliable transfer in most of the time like in browsers, in a file transfer
etc.
And unreliable transfer is used more in REAL TIME data transaction like in VoIP , online multiplayer games etc etc.

also one more very important thing ... this layer deals with PORTS ,hackers are very much dependable on ports ....

ABOUT PORTS


Now ports basically classifies type of service u are availing, like suppose you are trying to open Google on ur browser
and the server ur pc is requesting data is a web server and also an e-mail server, so how wud the server know wat service
you are trying to access...this is where port come in role.

MUCH MORE ON THIS LAYER IS ABOUT TO COME !!!

NETWORK LAYER


OOOO this is a hell of a layer.... later on this series m gonna camp on this layer.
this layer deals with logical addressing , suppose you are assigning a new IP to ur pc or router or watever,
you are dealing with network layer.
It also take u to ur destination over internet the best way possible . that means suppose u r trying to open a site
and there are many many routers and servers between ur pc and the destination so this layer finds best way possible


DATA LINK LAYER


this layer assigns physical address like MAC address , and ensures data is error free.

PHYSICAL LAYER


it simply converts all digital data to electric signals and deals with cables ...

so briefing of all the layer is over !!!
in next chapter we gonna c some real life example .. enjoy,take care

STEALTHBASTARD



Respected Readers:
As a 21 year old student, the only income I rely on is my pocket money. Bearing the running costs of HWS Blog has become really difficult. We educate thousands of bloggers a week with our tutorials. To help us go forward with the same spirit, a small contribution from your side will highly be appreciated.



If you enjoyed this post and wish to be informed whenever a new post is published, then make sure you subscribe to our regular Email Updates!


RSS Digg Delicious Twitter Facebook Stumble YouTube Technorati Google

0 comments:

Confused? Feel free to ask

Your feedback is always appreciated. I will try to reply to your queries as soon as time allows.
Note:-
Please do not spam Spam comments will be deleted immediately upon my review.

Regards,
XEO Hacker

Post a Comment

Twitter Delicious Facebook Digg Stumbleupon Favorites More

 

Recent Posts

Join Me On Facebook

200+ Followers

Followers


meet women in Ukraine contatore visite website counter

Recent Comments

Follow Me On Twitter

1112+ Followers