Master Microsoft Azure Fundamentals: AZ-900 Exam Prep vs Complete Networking Fundamentals Course: CCNA Start
Same Bayesian formula, same rubric — so the difference in scores reflects the difference in the courses, not the difference in how we evaluated them.
Scott Duffy (Udemy) · Test Prep
Master Microsoft Azure Fundamentals: AZ-900 Exam Prep
Udemy · Test Prep
Complete Networking Fundamentals Course: CCNA Start
Per-criterion
The course covers all AZ-900 exam domains across approximately 7.5 hours of video: cloud concepts (IaaS, PaaS, SaaS, CapEx vs. OpEx), core Azure architecture (regions, availability zones, resource groups), compute, networking, storage, databases, identity and access management, security and compliance, governance, and Azure pricing models. Matt Ouellette at Packet Pilot noted it "had well built demonstrations and labs to follow along with your free Azure account or built in labs" and "did a good job at giving you a high level overview of AZ-900." The course is updated for January 2026 exam revisions and includes Version 4.0 with re-mastered audio and updated slides. The primary content critique across sources is that 7.5 hours covers the breadth of the exam at a necessarily high level — every reviewer who mentioned it recommended pairing the course with Microsoft Learn or a dedicated practice-test package to fill the gaps the compressed runtime cannot cover in depth.
Scott Duffy is consistently described across all analyzed sources as a clear, approachable instructor who excels at making cloud concepts accessible to both technical and non-technical learners. Reddit user WayneH_nz called him "an AMAZING trainer." The Javarevisited article by javinpaul ranked Duffy's course first among AZ-900 options specifically because he "explains Azure cloud concepts in an easy-to-understand way" with "real-world examples, hands-on exercises, and quizzes." Shafath Ahmed on Medium wrote that Duffy "does a pretty good job explaining the Azure fundamental contents." No reviewer across the 26 opinions analyzed raised concerns about teaching quality, pacing, or clarity — the instructor dimension is the strongest scoring element of this course.
The course sells on Udemy during frequent sales for approximately $12–$15, which Reddit users across r/cscareerquestions, r/sysadmin, and r/AZURE cite as one of its key selling points. User The_Real_Tupac on Reddit noted "it regularly sells for $12," and user geekinuniform suggested "spending $12 for the Azure course" specifically to learn cloud terminology. For that price the course includes 7.5 hours of video, a 24-page PDF study guide, downloadable audio files for offline listening, slides, and a 50-question practice test — a bundle that multiple reviewers described as exceptional value at the sale price. Lifetime access and free updates that track exam revisions (including the January 2026 update) further strengthen the value proposition.
The course includes one 50-question practice test, which reviewers consistently describe as a useful baseline gauge but insufficient standalone exam preparation. Reddit user flam3throw3r from r/AzureCertification specifically recommended pairing it with Tutorials Dojo practice tests for more exam-representative questions. User extra_specticles on r/AZURE described watching the course first, then taking practice tests from an external source to identify weak areas. The cyber4noobs.com guide noted that optional lab add-ons are available separately but not included in the base course price. The practice material is proportionate to the course's 7.5-hour scope — it functions as orientation rather than the comprehensive drill-and-review system that Udemy's dedicated practice-test packages offer.
The AZ-900 is a fundamentals-tier exam with a passing threshold of 700/1000, and every reviewer who reported an outcome after using this course passed, many on their first attempt. Reddit user jpanda206 on r/AZURE studied for "about 3 weeks with Udemy and Microsoft Learn" and passed with a score of 790. Shafath Ahmed on Medium passed after approximately two weeks of preparation using Scott Duffy's course alongside Microsoft CLX and Microsoft Learn, completing the exam in 20 minutes of the allotted 45 and scoring above 90% on final practice runs. The cyber4noobs.com reviewer passed after one week of intensive daily study. No reviewer in the analyzed set failed after completing this course, though most credited a multi-resource approach rather than this course alone.
The course spans approximately 79.5 hours of video across all core CCNA 200-301 domains, covering networking fundamentals, OSI and TCP/IP models, IP addressing and subnetting, routing (static routes, OSPF, EIGRP, IPv6), switching, VLANs, Spanning Tree, NAT, ACLs, wireless technologies, QoS, VoIP, and network automation. Reviewers on Reddit and course aggregator sites consistently describe it as "one of the most comprehensive networking courses I have ever seen for the price" and praise its logical, ground-up progression. The course includes GNS3 and Packet Tracer lab demonstrations, cheat sheets, quizzes, and downloadable resources, though a small number of reviewers note it should be supplemented with additional practice exam resources for full 200-301 readiness.
David Bombal holds CCIE #11023 Emeritus, which he earned on his first attempt in January 2003 — a distinction achieved by a very small percentage of Cisco engineers. He has over 20 years of network training experience, has trained engineers at Fortune 100 companies, holds Cisco and HPE certified instructor status, and has over 2 million YouTube subscribers. Reviewers consistently praise his teaching methodology for the care put into scope and learning progression, with one Reddit user describing the course as the result of someone who "invested significant effort into what needs to be learned and in what order." His credentials are regularly cited as a reason students trust the material.
The course is consistently available on Udemy for $11–$20 during the platform's frequent sales, which Reddit reviewers repeatedly highlight as exceptional value. One r/homelab user who purchased it for $13.99 called it "the best purchase I made of thousands I've spent on my homelab over the years." Another r/linuxadmin commenter noted paying "a whopping $11.99" for "one of the most comprehensive networking courses I have ever seen." With nearly 80 hours of content, lifetime access, 18 articles, 124 downloadable resources, and regular updates to keep pace with the CCNA 200-301 exam blueprint, the cost-per-hour ratio is among the lowest of any CCNA prep course on the market.
David Bombal explicitly designs the course for both exam preparation and real-world application — the curriculum covers actual device configuration on simulated Cisco routers and switches via Packet Tracer and GNS3, not just definitions and theory. Reddit discussions in r/homelab, r/linuxadmin, and r/ccna note that the course teaches concepts in a way that applies directly to home labs and enterprise networking jobs, not just to passing an exam. The practical emphasis on configuration, VLANs, routing protocols, and troubleshooting scenarios means graduates are better prepared for entry-level network engineering roles, not just the Cisco certification exam.
The course's integration of GNS3 and Packet Tracer labs throughout the curriculum is the most consistently praised retention element — learners build and configure simulated networks rather than passively watching lectures. Multiple Reddit reviewers credit the hands-on component with making the course worthwhile for both CCNA candidates and general networking enthusiasts. The course length of ~79.5 hours is frequently described as thorough but potentially overwhelming for learners with time constraints, and some reviewers note the instructor's delivery can occasionally be hard to follow during dense technical sections. Overall, the lab-heavy format gives it stronger retention than purely lecture-driven alternatives.
Scoring methodology applies identically to every course on the site — see the formula.