4/22/2023 0 Comments Snail mail torrent![]() ![]() All this information, when processed on the other end in reverse, allows the destination device to verify both the data itself as well as where it came from The Network Access layer is where "Ethernet" comes in. Each one is assigned a sequence number, a source and destination address (and MAC ID), and a bunch of other information. These steps enable the transmission of large pieces of data (think: streaming video or torrent downloads) as a series of smaller "packets" of data. The TCP and IP layers, then, handle addressing, packetization and error correction. ![]() Whatever the data, it is packaged and prepared for transport by the Application layer. You may be checking e-mail, perhaps looking up sale prices on Amazon, or checking TalkLikeAMachine for updates. The Application layer is, as before, determined entirely by the specific installation. In this simplified scenario then, we have a three-step process for putting data on the network. ![]() Remember, we're keeping it simple for now. TCP/IP is actually a pairing of two separate layers of the OSI model, but they can be logically grouped into one for the purposes of our example here. ![]() It is this context in which we will use the term Ethernet. Note that the term "Ethernet" refers to a number of protocols and physical layers, but I mention it here because its most common usage describes both a the typical CAT5 cable interface to your PC or router as well as the TCP/IP and UDP protocols. TCP/IP is just one of a number of protocols that runs on the ubuqitous "Ethernet" interface. This time we'll take a quick look at TCP/IP and conclude with a look at how something like standard snail mail might look if we press-fit it into an OSI model mold. (The OSI Model, Part 1 may be found here.) Welcome back! Last time we covered the basics of the OSI model and briefly discussed two of the most common forms of serial communications: RS-232 and RS-485. ![]()
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