March 2000
Intermediate to advanced
632 pages
18h 6m
English
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I
HDLC
I.1 Introduction
The data link layer is the second layer in the OSI seven-layer model and its protocols define rules for the orderly exchange of data information between two adjacent nodes connected by a data link. Final framing, flow control between nodes, and error detection and correction are added at this layer. In previous chapters the data link layer was discussed in a practical manner. It is a use protocol as it provides a model for interfacing to a serial bus.
The two types of protocol are:
• Asynchronous protocol.
• Synchronous protocol.
Asynchronous communications uses start-stop method of communication where characters are sent between nodes, as illustrated in Figure I.1. Special characters are used to control the data flow. Typical ...
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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.