Authors and Network Test Experts

Pearson is the world's learning company, with expertise in educational courseware and assessment, and a range of teaching and learning services powered by technology.

Wendell first entered the world of TCP/IP back in 1990, when TCP/IP began to replace proprietary protocols in corporate networks, supporting IBM's new TCP/IP products, routers, and LAN products while still at IBM.

Since 2007 my main focus has been delivery of Cloud and Data Center technical training and development of course content for large enterprise and service provider customers such as NetApp, Cisco, Verizon and IBM.

CCIE No. 4594, is a network engineer for a large university healthcare network based on Cisco wireless products. David has bachelor's and master's degrees in electrical engineering from the University of Kentucky.

David has more than 20 years of technology experience spanning a variety of roles, and tries to share as much of this experience with his readers (and watchers) as possible.

Sari Greene is an information security practitioner, author, and entrepreneur. In 2003, Sari founded one of the first dedicated cybersecurity consultancies.

Kevin a Cisco Certified Systems Instructor (CCSI No. 20061) with two CCIEs (#7945), one in Route/Switch and one in Collaboration. He also holds multiple Cisco professional and associate-level certifications.

Bio to come...

Mark has worked with computers and related technologies since 1983, and specializes in technology education through training, writing, and public speaking

Is a Cisco Certified Systems Instructor (CCSI) who has dedicated his IT career to teaching others

Omar Santos is an active member of the cyber security community, where he leads several industry-wide initiatives and standards bodies.

John Stuppi, CCIE No. 11154, is a technical leader in the Security Intelligence Operations (SIO) organization at Cisco where he helps customers leverage their Cisco infrastructure to overcome emerging security challenges.

Aaron Woland, CCIE No. 20113, is a principal engineer in Cisco’s Advanced Threat Security group and works with Cisco’s largest customers all over the world.

Mason Harris, CCIE No. 5916, is a solutions architect for Cisco, focusing on cloud architectures with Cisco's largest global customers.

Online trainer since 2008. Passionate about helping others. Highly motivated and enthusiastic towards certifications. Cisco and CompTIA certified.