AB-100 practice test
Microsoft Agentic AI Business Solutions Architect
100 practice questions, spread across the exam's topics the same way Microsoft weights them, each with a full explanation and a link to the official documentation that proves the answer. Written by a Microsoft Certified Trainer who does this work for a living.
No card needed to start, and none to keep going: buying is not open yet.

What is inside
Every area the exam tests
Microsoft changes this exam on 16 November 2026Microsoft has published a revision of this exam that takes effect on 16 November 2026. It does not change what is examined, only how much each area is worth: Plan rises to 35-40%, Design to 30-35%, and Deploy falls to 20-25%. The percentages below are already the new ones and the questions have been rebalanced to match, so this set is built for the exam you will sit from that date. Nothing here is wrong for the exam as it stands today either, because the revision moved no objectives.
Plan AI-powered business solutions
35 to 40%Assessing where agents help in automation, analytics and decisions, reviewing grounding data for accuracy, relevance, timeliness and availability, the Cloud Adoption Framework's AI adoption path, multi-agent designs across Microsoft 365 Copilot, Copilot Studio and Foundry, prebuilt agents and their use cases, deciding between extending Microsoft 365 Copilot and building custom agents, when a custom or small language model is warranted, prompt libraries and prompt engineering guidelines, the AI Center of Excellence, solutions spanning several Dynamics 365 apps, and the economics: return on investment criteria, total cost of ownership, build against buy against extend, and model routing.
40 questionsDesign AI-powered business solutions
30 to 35%Designing Copilot in the Dynamics 365 customer experience and service apps including business terms, customisations and connectors, agents for contact centre channels, task, autonomous and prompt-and-response agents, Foundry Tools, generative pages and agent feeds, Copilot Studio topics and fallback, grounding and data processing, AI components in canvas apps, the Power Platform Well-Architected Framework for intelligent workloads, choosing between classic understanding and generative orchestration, agent flows and prompt actions, extensibility through custom Foundry models, Microsoft 365 Copilot agents, Model Context Protocol and Computer Use, agent reasoning and voice, and orchestrating the AI features already present in the finance, supply chain, customer experience and service apps.
35 questionsDeploy AI-powered business solutions
20 to 25%Monitoring agents and interpreting telemetry for tuning, analysing backlog and user feedback, testing: process, metrics, validation criteria for custom models, prompt practice and end-to-end scenarios across several apps, lifecycle management for agent data, for Copilot Studio agents, connectors and actions, for the Foundry Agents service, for custom models and for the AI inside the Dynamics 365 apps, and the whole of responsible AI, security, governance, risk and compliance: agent and model security, vulnerability analysis including prompt manipulation, responsible AI review, data residency and movement, access control on grounding data and tuning, and audit trails for changes to models and data.
25 questionsMicrosoft last updated this exam on 14 October 2026. Our questions match that version.
How you will use it
Practise the way that suits you
- Learn as you go. Answer, read why straight away, then move on. No clock, no pressure.
- Or sit it timed. A clock, no answers until the end, and two minutes a question, so you learn to pace yourself.
- Score by topic. See which area let you down instead of one number out of a hundred.
- Go back over it. Read every question again afterwards, right and wrong, with the full explanation.

Is it for you
Who takes AB-100
Solution architects designing agentic business applications
The whole exam is design decisions with trade-offs rather than features.
Consultants moving from Dynamics 365 delivery into AI work
It sits on the business applications rather than on Azure AI.
Leads accountable for agents once they are running
Deployment, monitoring, lifecycle and governance are over forty per cent.
See the questions before you pay
10 AB-100 questions with full explanations, so you can judge the quality yourself.
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