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Download e-book for kindle: 31 Days Before Your CCNA Exam: A day-by-day review guide for by Allan Johnson

By Allan Johnson

ISBN-10: 1587131978

ISBN-13: 9781587131974

I admire this ebook! It incorporates a pullout 31 day calendar within the entrance, with a couple of themes in step with day for research. contained in the booklet isn't a host of questions ( so do not anticipate this to be simply one other run of the mill perform exame ebook ), the writer presents an encapsulated assessment on every one subject, by way of EXAMPLES of ways to do what was once simply reviewed. *It's a 31-day, simply readable, condensed completely, textbook! (The ideal significant other in your CCNA perform examination books)

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Read or Download 31 Days Before Your CCNA Exam: A day-by-day review guide for the CCNA 640-802 exam (2nd Edition) PDF

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Extra info for 31 Days Before Your CCNA Exam: A day-by-day review guide for the CCNA 640-802 exam (2nd Edition)

Sample text

Adding to the process for requesting a web page, TCP operation works like this: 22 31 Days Before Your CCNA Exam 1. Web client sends an HTTP request for a specific web server down to the transport layer. 2. TCP encapsulates the HTTP request with a TCP header. 3. Lower layers process and send the request to the web server. 4. Web server receives HTTP requests and sends a TCP acknowledgement back to the request- ing web client. 5. Web server sends the HTTP response down to the transport layer. 6.

Web server receives HTTP requests and sends a TCP acknowledgement back to the request- ing web client. 5. Web server sends the HTTP response down to the transport layer. 6. TCP encapsulates the HTTP data with a TCP header. 7. Lower layers process and send the response to the requesting web client. 8. Requesting web client sends acknowledgement back to the web server. If data is lost at any point during this process, it is TCP’s job to recover the data. HTTP at the application layer does not get involved in error recovery.

Requesting web client sends a TCP acknowledgement back to the web server. 18. Web page is displayed in requesting device’s browser. Data Encapsulation Summary Each layer of the TCP/IP model adds its own header information. As the data travels down through the layers, it is encapsulated with a new header. At the network access layer, a trailer is also added. This encapsulation process can be described in five steps: Step 1 Create and encapsulate the application data with any required application layer headers.

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31 Days Before Your CCNA Exam: A day-by-day review guide for the CCNA 640-802 exam (2nd Edition) by Allan Johnson


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