Since beginning his writing career with Microsoft technology, Mr. Lammle has authored over 25 books on professional certification subjects. Widely regarded as a best selling author Todd Lammle continues to instruct technology professionals as they improve their knowledge and maintain their credentials.?Todd Lammle has been involved in computers and networking with Fortune 500 companies for over 20 years. His hands-on experience has been instrumental in designing his unique way of making complex and difficult-to-understand networking concepts easy and fun to?learn.In his 20 plus years of wireless, Ethernet, LAN and fiber optics experience, Todd has worked for large corporations such as Hughes Aircraft, Xerox, Texaco, and IBM. In 1986, while at Xerox, he met pioneers Len and Sandy Bosack, the designers of one of the first delivered Cisco? gateway products to Xerox. He had the privilege of working on this original box by using it to connect the Xerox X.25 packet switching network to the large SNA network. Todd also achieved his FCC RF license and provided technical support for the Xerox worldwide satellite network. His Wireless knowledge was further augmented, while studying at UCLA where he focused on implementing and troubleshooting microwave, infrared, and satellite communication networks worldwide.Todd also worked on some of the first Ethernet_II LAN networks installed at Xerox. He then moved on to one of the largest private fiber networks in the world working for Hughes Aircraft connecting the first Cisco? routers to their large network.Today, Todd’s networking knowledge and experience has been passed down to his more than 35 SYBEX study guides and network training classes at GlobalNet Training Solutions, Inc. Available in 12 languages worldwide, and written in an easy to read style, Todd’s training guides paired with GlobalNet’s courses help the IT professional obtain the most rapid acquisition of networking skills available today. His most popular book, the SYBEX CCNA Study Guide, has been the best selling networking book in the world, three years in a?row!Todd is now bringing that experience to the app world by introducing effective and useful practice exams for CompTIA Network and security Professional certifications.