Here are the books I've authored or co-authored. Amazon Web Services (AWS) AWS Certified Cloud Practitioner Study Guide: CLF-C01 Exam Set yourself apart by becoming an AWS Certified Cloud Practitioner. Click the book to view on Amazon. For errata, click here. AWS Certified Solutions Architect Study Guide: Associate …

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Here you'll find a list of my IT training courses. Amazon Web Services (AWS) Architecting for Operational Excellence on AWS Architecting for Reliability on AWS Architecting for Security on AWS AWS Networking Deep Dive: Elastic Load Balancing (ELB) AWS Networking Deep Dive: Route 53 DNS AWS Networking Deep Dive: Virtual …

January 31, 2020 update: No, you're not crazy. Cisco changed the exam number from 300-401 to 350-401. For your convenience, I've put together the following list of my courses that cover the new CCNP ENCOR exam. By watching and following along with the hands-on demos in these courses, you can't go wrong. Routing …

You took one of the Cisco CCNP exams. You went to the exam center, sat down, and started the exam. About 2 hours later, you saw the dreaded news appear on the screen: You didn’t pass. I’ve failed certification exams in the past, so I can relate to the facepalm-worthy feeling you get when you realize you dropped a …

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I recently got an email from a viewer of my Practical Networking course who asked how the TCP/IP networking terms I used mapped to the Open Systems Interconnect (OSI) model. First, a bit of background. The OSI model is a generic networking model that is supposed to describe conceptually how networks carry data. Within …

Learn to subnet in your head in just seconds! If you like what you see, check out Cisco Enterprise Networks: Basic Networking and IP Fundamentals.