Learning · Networks · AI · Program management
ProDigitalJ creates practical digital products — ebooks, study guides and courses — to help you learn networks, AI and program management.
Learning Courses
SCOR 350-701 (Implementing and Operating Cisco Security Core Technologies) is the required core exam for both CCNP Security and CCIE Security. This course covers all six blueprint domains end to end, with no topic skipped and no topic added that the blueprint doesn't ask for.
Study Guides
ENCOR 350-401 is a broad exam, and most study material handles that breadth by going shallow. This book does the opposite. Every technology in the blueprint is shown as a complete, production-shaped configuration, with the show output that proves it works, an explanation of what each non-obvious line defends against, and the failure modes you will actually meet — plus the exact output that identifies each one.
Learning Courses
Most network engineers arrive at automation the same way. Something breaks at two in the morning, a change window overruns, or an auditor asks a question nobody can answer, and it becomes obvious that the network has no authoritative description of itself. The configuration is on the devices.
Ebooks
A network configured by hand has no authoritative description of itself, and everything expensive follows from that: the drift nobody can see, the change that cannot be repeated, the outage that takes four hours to restore because the only person who knew the design has left.
Learning Courses
Network engineers have always automated themselves out of repetitive work — from typing commands, to Expect scripts, to Jinja2 templates, to model-driven configuration.
Learning Courses
This course takes you from no Python at all to writing automation you can run against production infrastructure. It is built from my book, Python for Network Engineers — From Zero to Automated Networks, and every example uses network data: show command output, interface counters, VLAN databases, inventory files, device configuration.
Study Guides
The SCOR 350-701 exam moved to the v2.0 blueprint, and most study material still teaches v1.1. The parts that changed are exactly the parts the new exam leans on. An entire domain — Secure Service Edge — is new.
Learning Courses
The DCCOR exam covers five domains that most engineers meet separately: networking, compute, storage networking, automation and security. Very few of us work across all five every day, which is exactly why the exam is hard. This course teaches them as one system, in the order that makes each topic explain the next.
Learning Courses
Network automation is no longer optional for enterprise engineers, and ENAUTO 300-435 v2.0 is the exam that proves you can do it on Cisco infrastructure. This course turns the full v2.0 blueprint into practical, hands-on skill, one focused lesson at a time.
Ebooks
Learn Python as a network engineer, not as a computer science student. 632 pages, every example built on real device output. Cisco-first, with Juniper and Fortinet.
Learning Courses
The DCNAUTO 300-635 v2.0 exam does not reward memorization. It rewards understanding how a modern data center actually gets automated, and this course is built to give you exactly that. Across five focused domains, you will learn to speak the language of network automation and put it to work on real Cisco NX-OS and ACI fabrics.
Learning Courses
Most candidates who fail a technical certification do not fail on knowledge. They fail on sequence. They watch videos for two months, panic in the final week, and walk into the test centre with a head full of disconnected facts they cannot apply to a scenario. I have been that person. It cost me money and most of a year.
Learning Courses
Cisco SD-Access (SD-Access, or SDA) is quickly becoming the standard way large enterprises design and secure their campus networks, and the engineers who understand it are in real demand. This course teaches it the way a real project actually unfolds: end to end, through one continuous, realistic deployment.
Learning Courses
Most SD-WAN training throws features and acronyms at you. This course does the opposite: it follows one realistic enterprise — a mid-size retailer we call “Meridian” — through a complete SD-WAN project, from an aging MPLS network all the way to a secured, cloud-connected, fully operational fabric. You learn every concept exactly where a real project needs it, so nothing ever feels abstract.
Study Guides
This book follows the published DCNAUTO 300-635 v2.0 blueprint exactly — five sections mapping onto the five domains, twenty-six sub-sections mapping onto the twenty-six topics. When Cisco writes "Construct an Ansible playbook with controller and device collections", there is a sub-section called that, and it is about exactly that.
Learning Courses
This is a dedicated practice test bank for the Cisco 350-101 WLCOR exam (Implementing and Operating Cisco Wireless Core Technologies) — 4 independent, full-length sets of 50 questions each, 200 questions in total, built directly from the official exam blueprint rather than generic Wi-Fi trivia.
Learning Courses
This course is a complete, video-narrated walkthrough of the WLCOR blueprint, built from a single, tightly structured study guide rather than a loose collection of slides. Every lesson follows the same discipline: understand the principle, see it applied in real configuration or a real diagram, and know exactly what the exam expects you to do with it.
Learning Courses
The 350-201 CBRCOR ("Performing Cybersecurity Using Cisco Security Technologies") is the core exam for the Cisco CCNP Cyber Security certification — and it is tough. It tests not just definitions, but whether you can think like a real Security Operations Center (SOC) analyst: reading logs, triaging vulnerabilities, analyzing malware, tuning detections, and automating response with Python and SOAR.
Learning Courses
This course takes you from the absolute fundamentals to exam-ready, covering every domain of the blueprint in plain, beginner-friendly language. No prior security-operations experience is assumed: each concept is explained from first principles, reinforced with a memorable analogy, and tied directly to the exam objective it satisfies.
Ebooks
Most SD-Access material either drowns you in acronyms or assumes you already know the answer. SDA Fundamentals does the opposite. It takes one realistic company — Northforge Industrial, a mid-size manufacturer with offices, a plant floor full of OT and IoT, a warehouse, and small sales sites — and walks you through its entire fabric project, from the first design meeting to day-two operations.
Ebooks
Anyone can turn on SD-WAN. Far fewer can design it, migrate a live network onto it without an outage, steer voice and cloud traffic intelligently, prove it's secure to an auditor, and still sleep at night
Other Digital Products
STOP RECALCULATING SUBNETS IN YOUR HEAD. Six beautifully designed, print-ready A4 reference sheets covering everything you reach for daily as a network engineer or CCNA/CCNP student — on your desk, in your binder, or taped next to your monitor.
Other Digital Products
YOUR HOMELAB DESERVES BETTER THAN A NOTES APP AND THREE STICKY NOTES. A 10-page printable planner that turns homelab chaos into a documented, budgeted, family-approved hobby. Print any page as many times as you need.
Other Digital Products
WALK INTO YOUR NETWORK ENGINEER INTERVIEW KNOWING WHAT'S COMING. 101 real interview questions with model answers written the way strong candidates actually answer — including the reasoning interviewers want to hear, common follow-ups and the red flags to avoid.
Other Digital Products
DOCUMENT YOUR NETWORK LIKE A SENIOR ENGINEER — WITHOUT STARTING FROM A BLANK PAGE. Four professional templates used in real enterprise environments, ready to rebrand and use with clients or internally.
Other Digital Products
Save hours every week with 200+ ready-to-use AI prompts made for dentists and dental teams. This digital ebook gives you copy-and-paste prompts for ChatGPT, Claude, and Gemini so you can write patient messages, reminders, social media captions, treatment explanations, reviews, policies, admin documents, and more in minutes instead of hours.
Other Digital Products
Learn anything faster. 200+ ready-to-use AI prompts that turn any topic, PDF or set of notes into clear lessons, quizzes and study plans — just copy, fill in the blanks, and paste.
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Edit, enhance and animate any photo like a pro. 200+ ready-to-use AI prompts for photo editing and photo-to-video — just copy, fill in the blanks, and create.
Other Digital Products
Save hours every week. 200+ ready-to-use AI prompts written for veterinary practices — just copy, fill in the blanks, and paste into ChatGPT, Claude or Gemini.
Study Guides
This unofficial Complete Learning Guide is built around that reality. Every one of the exam's five domains is covered in full, and the book's structure mirrors the exam itself: each chapter maps one-to-one to a domain, and its length matches that domain's weight — so the time you invest is always proportional to what the exam tests most.
Other Digital Products
Save hours every week. 200+ ready-to-use AI prompts written for accountants, bookkeepers and tax advisors — just copy, fill in the blanks, and paste into ChatGPT, Claude or Gemini.
Ebooks
The big idea: AI automation is no longer exclusive to large corporations. Small businesses can access the same tools for $20–$200/month, and those that adopt early will have a compounding competitive advantage over those that wait.
Learning Courses
Reading about ITIL and answering ITIL questions are two different skills. This course trains the second one. With 4 full practice tests and 160 original, exam-style questions, you'll practise under realistic conditions until the format holds no surprises.
Learning Courses
Most ITIL material reads like it was written to be memorised, not understood. This course does the opposite. Every concept is explained in plain English, shown with a real-world example, and tied back to exactly what the exam asks — so it actually sticks on exam day.
Study Guides
The guide follows all seven exam domains in the order they build on one another, from the physics of radio waves, through the 802.11 standard, into design, operation, client connectivity, monitoring, and finally automation and artificial intelligence.
Learning Courses
Are you ready to pass the Cisco Certified Network Associate Automation v1.1 (CCNA Automation) 200-901 (CCNAAUTO) exam on your first attempt? This course gives you 4 full-length practice exams — 200 unique, exam-style questions — built directly against the official Cisco 200-901 v1.1 blueprint.
Learning Courses
This course is based on the author's book, CCNA Automation 200-901 — Complete Learning Guide, and covers every topic in the official Cisco exam blueprint — from network fundamentals through REST APIs, Cisco platform automation, Docker, CI/CD pipelines, and infrastructure as code.
Study Guides
Written for complete beginners, this guide takes you from the CIA triad all the way to reading PCAPs, interpreting logs, and running the NIST incident-response lifecycle — the real skills of a Security Operations Center analyst.
Study Guides
This guide was written for absolute beginners — no prior networking or programming experience required. Every topic on the 200-901 exam blueprint is here, explained the way you'd explain it to a curious friend: a clear everyday analogy first — a network as an apartment building, an API as a patient waiter, a container as a sealed lunchbox — and then the precise detail the exam actually tests. No walls of jargon. No assumed knowledge.
Learning Courses
This course is built to help you prepare for the Cisco AUTOCOR v2.0 350-901 exam through realistic practice questions that reflect the style and difficulty of the actual test. It includes 5 full sets of 50 questions, giving you a total of 250 practice questions to sharpen your knowledge and exam readiness.
Other Digital Products
Your Freelancer Business Starter Kit is here! With Bonuses: Freelance Rate Negotiation Cheat Sheet Step-by-Step User Guide
Ebooks
AI is already changing network operations — this book shows you how to use it without breaking your network. Most "AI for engineers" material is either hype or toy examples. AI for Network Engineers is different: it's a practical, code‑first playbook written for people who actually run networks. Every concept is tied to something you can run, and the whole book builds on three disciplines that keep AI safe and useful in production — ground the model in real data, let it propose while a deterministic check disposes, and never mistake a confident tone for correctness.
Study Guides
This is a structured, exam-focused study guide built to mirror the official CBRCOR 350-201 blueprint one-to-one. Every objective across all four domains is covered in plain, Cisco-textbook-style language, reinforced with worked examples, real code, and 145 practice questions — so you study exactly what you will be tested on, and nothing you won't.
Study Guides
The ENAUTO 300-435 Complete Training Guide is a complete, exam-focused preparation resource for ENAUTO 300-435 — Automating and Programming Cisco Enterprise Solutions v2.0, the 90-minute exam shared by the CCNP Enterprise and CCNP Automation certification tracks.
Study Guides
Preparing for the new 350-901 AUTOCOR v2.0 exam — the core of the CCNP and CCIE Automation tracks? This complete, up-to-date guide covers all four exam domains in one volume, rebuilt for the 2026 blueprint version including the brand-new AI in Automation domain. Written for engineers who know the network but are newer to automation tooling, every topic starts from first principles and builds to exam-level depth — with real, runnable code you can try in a lab or in Cisco Modeling Labs.
Learning Courses
This course covers all four exam domains — Network Automation, Infrastructure as Code, Operations, and AI in Automation — aligned to the official Cisco blueprint for Designing, Deploying and Managing Network Automation Systems v2.0. Every section follows a consistent rhythm: a clear explanation, real runnable code examples, a written article summary, and a quiz with ten Cisco-style questions and fully explained answers.
Learning Courses
Cisco 300-635 DCNAUTO v2.0 Practice Exams is designed to help you prepare for the new Cisco DCNAUTO certification through realistic practice questions that reflect the style and difficulty of the exam. The 175 unique questions covers latest certification topics according to Cisco exam blueprint.
How to turn one YAML source of truth and one Jinja2 template into per-switch configurations with a dozen lines of Python. Covers the template structure, the StrictUndefined guard rail that stops silent errors, and why rendering and pushing should always be separate steps.
How the LOCAL_PREF attribute decides which exit your autonomous system uses, with working Cisco IOS-XE and Junos configuration, verification commands, and the mistakes that bite in production.
OSPF (Open Shortest Path First) is a link-state routing protocol used as the de facto standard in enterprise and service provider networks. This article covers the essential Cisco IOS configuration and the most common troubleshooting steps.
The Problem: A Network on the Bringe It was 2 AM on a Tuesday when the pager went off. Again. The corporate network at TechCorp Industries was down—again. As the senior network engineer, you'd seen this story play out too many times before. Users couldn't access applications, VoIP phones were dead silent, and the server team was breathing down your neck.
