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When you type an address into a browser and hit Enter, you expect to arrive at the intended website. Without the Domain Name System (DNS), that wouldn't happen. Whether simple or very complex, networks worldwide rely on the DNS to connect client and target. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, explains how DNS connects one person or server with another, and why you need to know about this undervalued service.

In this chapter from Office 2016 In Depth, you'll learn about the Office file formats used in each of the Office applications. You'll also learn your options for managing and sharing files.

In this chapter from CCDE Study Guide, Marwan Al-shawi discusses issues related to enterprise campus architecture design, including hierarchical design models, modularity, access-distribution design model, layer 3 routing design considerations, EIGRP versus link state as a campus IGP, and enterprise campus network virtualization.

In this chapter from My Office 2016, you learn about customizing the Office 2016 applications, including working with the application options and customizing the interface.

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New Mac OS X Means New Tricks...

Wow, who abducted our Windows 10 assumptions and left this smooth running and easy-to-use Operating System in their place?

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