- Taschenbuch: 535 Seiten
- Verlag: O'Reilly and Associates; Auflage: 1 (Juni 2009)
- Sprache: Englisch
- ISBN-10: 0596521553
- ISBN-13: 978-0596521554
- Größe und/oder Gewicht: 20,3 x 2,7 x 23,5 cm
- Durchschnittliche Kundenbewertung: 3 Kundenrezensionen
- Amazon Bestseller-Rang: Nr. 264.267 in Fremdsprachige Bücher (Siehe Top 100 in Fremdsprachige Bücher)
Head First Networking (Englisch) Taschenbuch – Juni 2009
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Frustrated by reading networking books chock full of acronyms that put your brain into sleep mode? Head First Networking is your companion on your step-by-step journey from a newly minted CCNA/CCNP, to a network guru with not only the answers but the explanations to support them. "Head First Networking" provides a task-based approach to the computer networking body of knowledge. This is a practical title that teaches networking concepts as tied to on-the-job tasks, blending practice and theory in a way that only Head First can. For example, the task of running wires or cables on the surface can be explained to a network newbie as: run Cable A for Purpose B between locations 1 and 2. However Head First Networking uses this opportunity to "go deeper" and discuss the types of signals being transmitted "over the wire", and how signal loss impacts a network, explains the significance of the differences between hardware for connecting hosts and devices in a network, and finally starts delving into the topics of network models and network topologies (or why you set up a network in a specific fashion).Like all of the books in the Head First series, "Head First Networking" uses a visually rich format designed for the way the brain works. Based on the latest research in neurobiology, cognitive science, and learning theory, this book combines words and pictures in a compelling, mixed-media style that not only helps readers understand a subject, but also to remember it.
Über den Autor und weitere Mitwirkende
Al Anderson is the Director of IT Support Services at Salish Kootenai College. He holds an Associates of Science in Computer Science and is near completing of Bachelors of Science in Computer Engineering. He has 10+ years of college teaching experience in Programming, Networking, and Desktop Publishing, and 15+ years experience in creating, editing, and formatting various documents including pamphlets, catalogs, and manuals. Al has produced a 3-8 hour video series for the Virtual Training Company including Ruby on Rails, REALbasic, and Programming Ruby. In addition, he has built many production applications including a Learning ManagementSystem in use by Salish Kootenai College, a Ruby-on-Rails issue-tracking help desk application, and a Mac OS X Cocoa Airport Wireless Utility.
Ryan Benedetti holds a Master of Fine Arts degree in creative writing from the University of Montana and teaches in the Liberal Arts Department at Salish Kootenai College (SKC) on the Flathead Indian Reservation.For seven years, Ryan served as Department Head for Information Technology and Computer Engineering at SKC. Prior to that, he worked as editor and information systems specialist for a river, stream, and wetland research program in the School of Forestry at the University of Montana.Ryan's poems have been published in Cut Bank and Andrei Codrescu's Exquisite Corpse. He loves cartooning, playing blues harmonica, making Flash learning toys, and practicing zazen. He spends his best moments with his wife, daughter, and son in the Mission Mountain Valley of Montana.
Nur die englische Version ist brauchbar, die deutsche Übersetzung ist so schlecht, dass ich dem Verlag empfehle ein paar Kröten mehr für fähige Übersetzer auszugeben und die erste Auflage der deutschen Fassung zu recyceln.
Alles in allem ein sehr guter Einstieg für Azubis im Bereich Systemintegration.
Die hilfreichsten Kundenrezensionen auf Amazon.com (beta)
It spends many pages on basic undergrad comp sci mechanics that are neither necessary nor useful in building and maintaining a network, and rarely in troubleshooting network problems.
The text and exercises refer to material that has not been presented yet. I often had to look ahead a few pages to find a definition. A couple of the solutions appear to be wrong, or are not explained enough to understand.
Several times, the book suggests that something is possible, but does not tell how to do it. Often the discussion is limited to Cisco specifics and fails to address other equipment that a new networker might encounter.
Suggestions for improvement:
- thorough editing
- a straightforward summary at the end of each chapter
- an appendix of the common maintenance and diagnostic tools
I look forward to a second edition.
This book discusses the CCNA (Cisco Certified Network Associate) a few times. While it might be a good introduction if you're thinking of going into the CCNA having never worked on a network before, it is not a CCNA, or even pre-CCNA book. It is a good overview of the physical layer.
My major issues with this book are: the old technologies and glossing over of upper layer network functions. In terms of technology, there's a fairly long section on coaxial network connections (10Base2). While you might come across it in "the field," it's a fairly esoteric technology now. Furthermore, the router shown in the book is so old that CCNA-goers don't even buy them for practice anymore! I have a feeling the IT prof that wrote this book has never actually configured a router (at least not in the last 20 years).
The router image is actually confusing because of its age (and the error in the diagram doesn't help). It shows a Cisco 2500 series router (OLD) with two "fast ethernet (feth)" ports. Unfortunately the arrows to the ethernet ports are actually going to "Serial" ports (as you can just barely make out on the router). This is confusing because the Console port actually does look like what most know as an ethernet port. The actual ethernet connections on this router are an old style AUI port (not described in this diagram). The take-away of this is that it's entirely confusing to the beginner.
The book barely discusses switching and routing. The descriptions are good, and some of the lower-level switching layer is described well. There is no discussion about how switches communicate to each other - I don't think switching loops (an important CCNA-level concept) are even mentioned. TCP/IP (how packets are used to talk from computer to computer) is described, but also oversimplified.
The routing protocol described (RIP) is old technology, though still useful, but it's over simplified. The difference between "Distance Vector" and "link-state" protocols is not described (nor do those terms show up in this book). Worst of all, they point you in the direction of the RFCs if you want to learn more about common protocols like OSPF and BGP! These highly technical references might be useful if you're already an engineer, but are probably the worst possible reference for a beginner.
Summing up, buy this book if you've never seen or used a network before. If you're starting your first job as a tech or interning for a network engineer, this might be a good intro. If you're looking for CCNA resources, you're probably already well past this book. I would not have been pleased had I purchased this book even before I started working toward my CCNA.
The book says it's for people who "need to learn networking for a job, for a class (like CCNA), or just because you think it's about time you learned the difference between a switch and a router". So this book seemed like it would be a good fit for me.
To briefly cover the book's contents, the chapter subjects include 1) Fixing Physical Networks, 2)Planning Network Layouts, 3) Tools and Troubleshooting 4) Packet Analysis 5)Network Devices and Traffic 6)Connecting Networks with Routers 7)Routing Protocols 8)The Domain Name System 9)Monitoring and Troubleshooting 10) Wireless Networking 11)Network Security 12)Designing Networks. The topics are covered over 500 black and white pages.
I'll start out with the things I enjoyed with this book.
-The book is aesthetically pleasing. In the 500 pages, I would guess about half of the book is white space and pictures. The pictures are either goofy people or computer parts. It makes the book more digestible and approachable. I believe this is the standard style for the "Head First" series.
-The book is not boring. It's designed as a learning tool as opposed to a reference book. It explains concepts while asking the reader to do written exercises on every couple pages. The exercises go along with a silly story. For example, in chapter 1, you are helping "Coconut Airways" fix their network. Problems keep arising as the story progresses so you learn more and more about what is wrong.
-The book explains concepts creatively. For example, one reoccurring feature is an interview or conversation between two pieces of networking hardware or software. It helps emphasize their functions and differences.
Stuff I don't like:
-Many of the exercises in the book are faulty. It wasn't uncommon to come to an exercise page and not have an idea what is being asked. They often asked questions about material that was not even mentioned yet. For example, on page 309, you are to match various acronyms with their functions. How am I supposed to know what "SOA", "CNAME" or "IN" do if they weren't even referred to before the exercises?
-I must have run into at least five typos throughout the book. For example, on page 174, "connection" is spelled "connetion". On page 231, it reads "The can also" instead of "They can also". On another page, "You're" is spelled "your". One typo in a published book may be acceptable, but many really undermine its credibility. I certainly wasn't looking for errors. If I'm the one who caught these simple errors, how do I know the technical details are correct?
-I'm not sure I read much, if anything, on the OSI model. Before this book, I didn't know much about networking, but I know everyone who has taken a networking class knows about the OSI model. It's the very important theoretical basis of networking. But it's not even in the book's index. It makes me wonder what other vital information was left out?
-The writing is often cleaver and fun, but it is too often unclear. I know it's tough to explain technical concepts, but I would guess 1/3 of the book left me scratching my head for clarification. I often had to supplement the pages by looking up terms or context on the internet. Too often, unreasonable assumptions were made about the reader's knowledge.
Throughout reading the book, I frequently got the impression that this book was a draft that was rushed to print. This book is in its first edition and it shows. It should have been more thoroughly reviewed by its target audience before being sent to production. At the same time, I don't regret reading this book. After all, I did learn a great deal. I just had to constantly supplement and fact check the book with other resources to make sense of it all.
I suggest you take its faults into consideration before reading the first edition of Head First Networking.
There are a few errors and apparent misunderstandings in the text. More seriously, much of the material is simplified to the point where the information content is at danger of disappearing altogether. The chapters on physical cable layout are particularly pointless, containing such insights as (and I paraphrase here): "if the AC ducts are in the way, reroute your cables". OK... thanks - I was going to cut right through them!
Little effort is made to provide useful references for further reading; only the networking RFCs are suggested. This is completely unhelpful, and suggests that the authors themselves are unfamiliar with the (abundant) literature on TCP/IP, routing, switching and network security.
With this volume, and some of the more recent Head First titles, O'Reilly risks returning to its previous bad practice of publishing ANYTHING which they think will make money. I very much hope they rethink their approach to what has, until recently, been a remarkably useful series.
As has been mentioned, the authors, and for that matter, the technical reviewers, are not networking professionals. Perhaps they have dabbled in it (they obviously have), but how long ago? This does not have any up-to-date information, it is more like a history of networking, and an incomplete one at that. Perhaps if your goal was to become a cable installer and have a little insight into what the guys who aren't climbing ladders are up to, this would be a book to read.
The worst thing, the thing that made me want to write a review here, is that the glowing quotes on the back of the book that describe how wonderful it is, are written by the technical reviewers! One would think that must violate some fair advertising law.
The book, perhaps like all titles in the "Head First" series, tries way too hard to be amusing. It also tries too hard to be simple. It says in the beginning that it is refreshing to have a networking book that doesn't delve into the OSI model. Well, sorry guys, the OSI model might not be sexy, but it is critical to real networking.
The book is not Cisco-specific, most of the time, which is fine. However, I also purchased another book at the same time as this one that is Cisco-specific. It doesn't have all sorts of goofy pictures of people doing yoga, but it is amusing and has real-world things in it that aren't sugar-coated. It is the CCENT/CCNA ICND1 Official Exam Certification Guide, 2nd Edition by Wendell Odom. Even if you were wanting a general non-Cisco-specific overview of networking, I would still recommend that book way ahead of Head First Networking.