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CCNA Security (640-554) Portable Command Guide by Bob Vachon

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About the Technical Reviewer

Jim Lorenz is an instructor and a senior training developer for the Cisco Networking Academy Program. He holds a bachelor’s degree in computer information systems and has over 20 years of experience in networking and IT. Jim has developed course materials, including content, labs, and textbooks for the CCNA and CCNP curricula. Most recently he coordinated lab development for the CCNA Security course.

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