Moving Bits: Networking Fundamentals, Part 2
In the first part of this series on Networking Fundamentals, I discussed three basic layer concepts in networking, and described them using an analogy to a physical postal system. If you haven’t read that post, please review it before moving on. However, to briefly recap, the three layers I discussed were: a physical layer, which allows for the conveyance of information, and is analogous to the carriers, logistics systems, and delivery and drop-off points in a postal system; a packaging layer, which allows for addressing and packaging of information, and is analogous to the envelope a letter goes into; and…