Download or read book IT Essentials Companion Guide V6 written by Cisco Networking Cisco Networking Academy and published by . This book was released on 2016-11-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book supports the course designed for Cisco Networking Academy students who want to pursue careers in IT and learn how computers work, how to assemble computers, and how to safely and securely troubleshoot hardware and software issues.