About the Technical Reviewers

Brian D’Andrea started his career working as a bench technician for a large computer manufacturer. He then progressed to a consultant position for various financial and medical institutions across Pennsylvania, New Jersey, and Delaware. He is now a long-time instructor and courseware developer of Cisco courses that include CCNA Routing & Switching, CCDA, CCNA Security, CCNP Routing & Switching, and CCDP. He has been privileged to be part of several Cisco Press–published materials. He enjoys sharing his knowledge and 17 years of experience in the information technology field.

Desiree Lindfield is a Cisco Certified Systems Instructor (CCSI) and provides official Cisco training for Boson and Global Knowledge. She has ...

Get Cisco CCNA Routing and Switching 200-120: Flash Cards and Exam Practice Pack now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.