L2 - Before studying all the details from bottom to top...

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Before studying all the details from bottom to top layers, it is useful to get an overall view of basic networks. Switching and routing are complex tasks, Different networks perform switching and routing differently. Also: how networks developed how layers interact.
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Two basic categories, examples: 1) telephone network, 2) Internet. Telephone network - makes a connection over a route, and signal flows steadily on the connected path. Digital form - a connection owns a time slot in a synchronized frame for each hop, and the data coming in is switched automatically to an outgoing line and time slot.
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The Internet divides data into packets - each packet is looked at and routed individually, based on included address.
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Roles of data speed and propagation time in end-to- end delay.
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Wireless networks 1.System wireless interconnections 2. Wireless LANs - all within range.
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3. Wireless WANs - connect to a base station via a satellite, an airplane at sufficiently high altitude, or through a network of base stations. (Chapter 4, later)
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This note was uploaded on 07/16/2011 for the course EE 362 taught by Professor Unknow during the Spring '11 term at Penn College.

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L2 - Before studying all the details from bottom to top...

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