This book consists of nine chapters. After reading this book, I have deepened some understanding of the working process and principles of computer networks. The first chapter of this book gives an overview of the computer network. After the overview, the OSI seven-layer model is introduced. The following chapters give a detailed explanation of OSI, the protocols used in each layer, and the role of each layer. What layer does each layer act on, how to go a line if a data is transmitted, how to request a web browser for a user, how to request data and return it to the user. The eighth chapter explains the LAN technology in detail. The content of the LAN is quite a lot, such as a series of standards. The last one explains the security, three signatures, and two attacks.
The first time I walked around the flowers, the second time was word by word, the third time was to analyze each chapter based on the exam questions of the past years, and the last seven days of sprinting took four days to draw a map for each chapter of the whole book, and it took another two days to pass I took a look at the real questions over the years, and I quickly slipped through the textbook for the last half day. I took a copy of the real questions on the way to the examination room before the test. After a few glances, the first short answer question is the confirmation and retransmission mechanism, okay~~!, It's the same as the first short answer of this test, let's look at the fill-in-the-blank questions, there are still the same... There are a few questions that are not sure in the process of doing the questions, but the whole set is done with peace of mind.
The map is provided:
Looking back on the process, it took about a day or two to read the first time because it was extensive reading. The second time I read it for a few days, and finally I did it together with the real question. The time to really work hard is in the next seven days. On the basis of doing a few sets of questions a few days ago, I became more familiar with the textbook. When I drew a map, I added my own thoughts. There are still some long parts where I made up my own stories and memories, which is quite interesting. This time the preparation is fairly easy, just one subject.
Just experience it!