what is 202

of the future—ATM—which attempts to provide one specification that works at all layers of the OSI stack). The next layer up in TCP/IP is the Internet Protocol, or IP. Each layer in the stack exists to perform a specific function. The Data Link layer moves data across a LAN. The purpose of the Network Layer is to move data across as many LANs and network links as is necessary to get the data to its destination. IP performs this function well, and it performs only this function—other functions, such as ensuring that the data arrives in order and without duplication, or even that it arrives at all, are performed by other higher-level layers. How Layering Works Each layer in the OSI model (and in the TCP/IP suite) operates by using the data portion of the layer below it. IP over Ethernet, for example, places its data structures (called packets) in the data portion of the Ethernet frame. TCP (a layer above IP) places the communications streams it manages in the data portions of IP packets. Application level services such as FTP, which use TCP to establish and maintain the communications channels for exchanging files, write data to TCP sockets, which are placed in IP packets, which are placed in Ethernet (or PPP or Token Ring) frames to be sent out over the network link. Another way of looking at the protocol stack is to start from the highest level and work your way down. As the data goes down through the TCP/IP networking layers, information specific to that layer is added to the data until it reaches the bottom, at which point it is sent out over the communications link (see Figure 3.4.). When it is received on the other side, the process is reversed, with each layer removing the data specific to that layer, until it is presented to the ultimate recipient of the data. Figure 3.4: Each layer of the OSI stack adds layer-specific data to what it receives and passes the expanded information to the layer below it. When the layer receives information from the layer below it, the layer removes layer-specific data and passes the information on to the layer above it. Frames and Packets The basic unit of Logical Link Layer data transmission is the frame. The Internet Protocol has a similar basic unit of data transmission—the packet. An IP Packet is quite similar in structure to an Ethernet frame, with source and destination addresses, packet description and option fields, checksums, and a data portion. Because of the way IP is layered on top of the Logical Link Layer, all of the packet structure is nested inside the data portion of the logical link frame (Ethernet, for example). 62

congragulations for your grand daughters birthday. i hope she has the best day ever. everyone get her TONS AND TONS of gifts lol. i wish it was my birthday =(. I LOVE CAKE! lmao haha

First of all its a number.If we utilise in another one it becomes a date which comes as 20th feb which is also your grand daughter's birthday.

same as 790 ... ????? its your turn now.

ok nice please tel in details

ithink this 2 on 2 depend ur family point of view forexample: husband and u and ur two beautiful children :)

it must be ur lucky no

It's also the square root of 40804! Guess what 622 is?

202 is the number of girls i have screwed till now

date?! what's 90210??

Your area code?

it is 0 between two 2 s am i right?

Husband & wife and their two childrens

i think 2on2 ur couple baby lol

It is a number starting with two ending with two .Rectify the spelling mistakes please.

Grand daughter's birthday That is really nice to know wish her birthday from my side and i hope she is blessed with immense happiness and she gets whatever she wants to!

Hello.I dont know what you mean by 202. But, to me 202 is my flat number. So naybe that is your flat number.

Your door number.

202 is a figure of two hundred and two

I think it means something special for you. And it's a number.