January 2012
Intermediate to advanced
312 pages
11h 2m
English
Content preview from Express Learning: Data Communications and Computer Networks
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Reference Models and Network Devices
1. What is meant by a reference model? Why do we need it?
Ans: A reference model is a conceptual layout that describes how communication between devices should occur. For efficient communication, the reference model identifies the tasks involved in inter-computer communication and divides them in logical groups called layers, with each layer performing a specific function. A communication system designed in such a manner is referred to as layered architecture. We need a reference model, as it provides various advantages, some of which are as follows:
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It permits different types of network software and ... |
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.