6 real AB-900 flashcards, sampled from all 3 domains the exam tests, heaviest first. Each concept card is paired with the misconception card built from the tempting wrong answer - the trap most decks skip. No account, no card.
The full deck has 848 flashcards, and a free account opens 40 of them across every domain. For a domain-by-domain breakdown and a study plan, read the AB-900 study guide.
schoolConceptUnderstand data protection and governance tasks for Microsoft 365 and Copilot
When Microsoft 365 Copilot answers a prompt, which documents is it allowed to use?
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Copilot has no access model of its own. It resolves grounding data through Microsoft Graph in the signed-in user's security context, so permission trimming happens at query time and it cannot surface files the user lacks rights to open.
errorMisconceptionUnderstand data protection and governance tasks for Microsoft 365 and Copilot
Copilot has a dedicated service identity with tenant-wide read access so it can reason over every document in the organisation.
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Tempting because Copilot can seem to know everything, but it holds no elevated tenant-wide identity. It always operates within the requesting user's permissions.
schoolConceptIdentify the core features and objects of Microsoft 365 services
Which admin centre is purpose-built for creating shared mailboxes, configuring mail flow (transport) rules, and managing messaging retention?
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The Exchange admin center. Mailboxes, shared mailboxes, transport rules, and messaging retention are Exchange Online objects, so they are administered there rather than in the tenant-wide or content-focused centres.
errorMisconceptionIdentify the core features and objects of Microsoft 365 services
Shared mailboxes and mail flow rules are configured in the Microsoft 365 admin center.
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Tempting because that centre handles tenant-wide users, licences, and billing and links out to specialist centres. But shared mailboxes and mail flow rules are configured in the dedicated Exchange admin center.
schoolConceptPerform basic administrative tasks for Copilot and agents
Which Microsoft 365 Copilot commercial model suits occasional or unpredictable agent use, and why?
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Pay-as-you-go is a metered model that charges for the volume of agent messages consumed. It suits intermittent or unpredictable usage where a fixed per-user licence would be poor value.
errorMisconceptionPerform basic administrative tasks for Copilot and agents
The Microsoft 365 Copilot per-user monthly licence is the best fit for employees who only occasionally use an agent.
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The per-user licence is the headline Copilot offer, so it is tempting, but it charges a flat fee per assigned user regardless of usage. That is the opposite of paying only for occasional consumption.
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