Matt Walker, Angela Walker's CCENT Cisco Certified Entry Networking Technician Study PDF

By Matt Walker, Angela Walker

ISBN-10: 0071591141

ISBN-13: 9780071591140

The top absolutely built-in research method on hand for CCENT examination 640-822

With enormous quantities of perform questions and hands-on routines, CCENT Cisco qualified access Networking Technician learn Guide covers what you want to know--and indicates you ways to prepare--for this difficult examination.

100% entire assurance of all legitimate ambitions for examination 640-822:

  • examination Readiness record on the back and front of the book--you're prepared for the examination while all targets at the record are checked off
  • contained in the examination sections in each bankruptcy spotlight key examination issues coated
  • Simulated examination questions fit the structure, tone, subject matters, and hassle of the genuine examination

Covers all CCENT examination themes, including:

OSI Reference version · TCP/IP · community Media and units · Ethernet criteria · Switching · Routing · IP Addressing · IP tackle Subnetting · IOS and Configuration records · CLI · Cisco swap and Router Configuration · WANs and WLANs · functions, protection, and Troubleshooting

CD-ROM includes:

  • perform try engine, powered by means of Boson, that includes: a hundred perform examination questions; distinct solutions with reasons; bankruptcy quizzes and actual examination surroundings simulations
  • rating document functionality overview device
  • Interactive community simulation software program, powered by means of Boson with simulated lab routines
  • 15+ tutorial movies
  • digital e-book for learning at the pass

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Additional resources for CCENT Cisco Certified Entry Networking Technician Study Guide (Exam 640-822) (Study Guide Book & CD)

Example text

The Application layer holds the protocols that allow programs to access and make use of a network. For example, Microsoft Outlook—a common e-mail program—can work just fine without a network. You can open, edit, create, and delete e-mails offline just as well as you can online. However, if you wish to use the network to send and receive e-mail, you need an Application layer protocol to do this. In this example, the Application layer protocol would be SMTP. Continuing the e-mail analogy, imagine you are sending an e-mail from a Microsoft Outlook application to a computer running the Thunderbird e-mail application.

The individual protocols mentioned will be discussed in greater detail in Chapter 2. Figure 1-2 displays the seven layers. FIGURE 1-2 The OSI Reference Model layers Application layer (7) Presentation layer (6) Session layer (5) Transport layer (4) Network layer (3) Data Link layer (2) Physical layer (1) The OSI Reference Model 13 Because the OSI model acts as a foundation for the rest of networking, it’s very important that you thoroughly understand the stack. It is essential you be able to identify: ■ The order of the layers, from top to bottom, and bottom to top ■ The number that corresponds to each layer ■ The function(s) of each layer ■ The protocols and devices that work at each layer Memorizing the layers and their numbers is actually fairly easy using a mnemonic.

Com/go/ certifications/login. You’ll need to use your Cisco testing ID number to log in. 02 The OSI Reference Model ✓ Q&A Copyright © 2008 by The McGraw-Hill Companies. Click here for terms of use. Two-Minute Drill Self Test 2 Chapter 1: Networking 101 Y ou cannot begin learning any aspect of technology or industry without first mastering the basics. This chapter covers the building blocks you’ll need to be successful in the rest of your study. The first half explores some basic terminology and definitions, what networks look and act like, and the components that make up the network, while the second half—through an examination of the OSI Reference Model—looks at how data is treated as it moves through your network.

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CCENT Cisco Certified Entry Networking Technician Study Guide (Exam 640-822) (Study Guide Book & CD) by Matt Walker, Angela Walker

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