CCENT/CCNA ICND2 official exam certification guide, second edition

Congratulations! If you’re reading this Introduction, you’ve probably already decided to go for your Cisco certification. If you want to succeed as a technical person in the networking industry, you need to know Cisco. Cisco has a ridiculously high market share in the router and switch marketplace—more than 80 percent in some markets. In many geographies and markets around the world, networking equals Cisco. If you want to be taken seriously as a network engineer, Cisco certification makes sense.

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