Professor Messer

CompTIA A+ Training Course Introductory Module

This is an overview video for Professor Messer’s Free CompTIA A+ Certification Training Course, the industry’s first free video-based training for the CompTIA A+ certification. In this introductory module, you’ll learn about Professor Messer, the format of the training course, and our goal for building a community of A+ certified professionals. You’ll also learn about the history of CompTIA, the advantages of an A+ certification, the exam categories, and best practices to use when taking the CompTIA A+ certification exam at your testing center.

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Hacking Nmap: Using Nmap to Calculate Network Response Time

“The network is slow!” Almost everyone in Information Technology has heard the cries of the end user community when their important application begins crawling. Because of the complexities associated with modern application infrastructures, technology professionals are often challenged to determine the source of the slowdown. Is the application sluggishness related to the network, security configuration, the end-user workstations, the server, or the application?

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