Summary and Info
CCNA Security 640-554 Official Cert Guide presents you with an organized test preparation routine through the use of proven series elements and techniques. “Do I Know This Already?” quizzes open each chapter and enable you to decide how much time you need to spend on each section. Exam topic lists make referencing easy. Chapter-ending Exam Preparation Tasks help you drill on key concepts you must know thoroughly.
More About the Author
Keith Hubert Douglas Barker (born 21 October 1986) is an English first-class cricketer who plays for Warwickshire.
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