AB-620 · Sample questions

AB-620 sample questions with answers and explanations

10 real questions from the CertifyDeck AB-620 bank, spread across the domains of the official Microsoft Certified: AI Agent Builder Associate skills outline, with the correct answer and a full explanation of why the other options are wrong. They are original questions written from the public syllabus, not exam dumps, and they are the same style you will find in the practice tests and mock exams.

1. Question 1Domain: Integrate and extend agents in Copilot StudioMedium

   An external specialized agent supports the open Agent2Agent protocol and must maintain multi-turn collaboration with a Copilot Studio agent. Which integration should you use?

   • D.An environment variable
   • A.An A2A connection
   • B.A static knowledge source
   • C.An adaptive card
   Show answer and explanation

   Correct answer: A. An A2A connection

   Explanation

   A2A is the open protocol for communication and collaboration between agents, including supported multi-turn interactions.

   Official references

   • Connect to an agent over A2A
   • Official AB-620 study guide
2. Question 2Domain: Integrate and extend agents in Copilot StudioMedium

   Contoso adds an MCP server to a Copilot Studio agent. The server exposes a ProductCatalog resource, but the agent cannot use it while the server tools work. What should the server owner do?

   • B.Convert it into a trigger
   • C.Enable every server tool
   • D.Move it to a Dataverse table
   • A.Configure ProductCatalog as the output of an MCP tool
   Show answer and explanation

   Correct answer: A. Configure ProductCatalog as the output of an MCP tool

   Explanation

   Copilot Studio can use an MCP resource only when the server owner configures it as the output of an MCP tool.

   Official references

   • Add MCP tools and resources
   • Official AB-620 study guide
3. Question 3Domain: Integrate and extend agents in Copilot StudioMedium

   A generative answer must summarize custom search results supplied by an earlier API call. Which three properties define the supported table shape for each result?

   • a.Content, ContentLocation, and Title
   • b.Name, Password, and Token
   • c.Prompt, Topic, and Trigger
   • d.Index, Vector, and Replica
   Show answer and explanation

   Correct answer: a. Content, ContentLocation, and Title

   Explanation

   Custom data passed to generative answers uses table rows with Content and optional ContentLocation and Title fields.

   Official references

   • Microsoft Learn
   • Official AB-620 study guide
4. Question 4Domain: Test and manage agentsMedium

   A policy agent must include the exact identifier HR-LEAVE-30. The test must fail when it is absent even if the answer is semantically similar. Which evaluation method should you use?

   • A.Text match
   • B.Similarity
   • C.General quality
   • D.Availability monitoring
   Show answer and explanation

   Correct answer: A. Text match

   Explanation

   Text match validates required exact or partial text. Similarity is intended for semantically equivalent wording.

   Official references

   • Design an agent testing strategy
   • Official AB-620 study guide
5. Question 5Domain: Test and manage agentsMedium

   You need to detect regressions after every change to an agent's instructions. What should you create?

   • c.A static transcript without expected outcomes
   • d.A separate production environment for each user
   • a.A reusable test set with representative test cases
   • b.A new agent for every test prompt
   Show answer and explanation

   Correct answer: a. A reusable test set with representative test cases

   Explanation

   A reusable test set provides a consistent baseline that can be rerun after changes and compared over time.

   Official references

   • Microsoft Learn
   • Official AB-620 study guide
6. Question 6Domain: Test and manage agentsMedium

   A managed solution moves from test to production. The agent action calls a different API base URL in each environment. How should the URL be stored?

   • a.Hard-code the production URL in every topic
   • b.Put both URLs in the agent greeting
   • c.Edit the managed component directly after every import
   • d.Use an environment variable definition and provide an environment-specific current value
   Show answer and explanation

   Correct answer: d. Use an environment variable definition and provide an environment-specific current value

   Explanation

   Environment variables separate configuration from solution logic. Each target environment supplies its value without modifying the managed component.

   Official references

   • Microsoft Learn
   • Official AB-620 study guide
7. Question 7Domain: Plan and configure agent solutionsMedium

   A support agent must present three structured incident fields and let the user confirm or correct them before creating a ticket. Which response component is most appropriate?

   • D.An environment variable
   • A.An adaptive card with input controls and a submit action
   • B.A static knowledge source
   • C.An Application Insights query
   Show answer and explanation

   Correct answer: A. An adaptive card with input controls and a submit action

   Explanation

   Adaptive cards provide structured presentation, input controls, and actions inside the conversation, making them suitable for review and confirmation.

   Official references

   • Use adaptive cards in Copilot Studio
   • Official AB-620 study guide
8. Question 8Domain: Plan and configure agent solutionsMedium

   An expense agent can prepare a reimbursement, but payments above EUR 5,000 require a finance manager to approve before the transfer action runs. What should you add to the agent flow?

   • A.A human approval step before the transfer action
   • B.A longer generative answer
   • C.A second knowledge source
   • D.An anonymous authentication mode
   Show answer and explanation

   Correct answer: A. A human approval step before the transfer action

   Explanation

   A human-in-the-loop flow introduces an explicit approval checkpoint before a consequential action. Knowledge and response formatting do not provide authorization.

   Official references

   • Human-in-the-loop patterns
   • Official AB-620 study guide
9. Question 9Domain: Plan and configure agent solutionsMedium

   Which Power Fx expression correctly converts a topic variable named customerName to uppercase?

   • a.Upper(Text(Topic.customerName))
   • b.Upper(Text(Global.customerName))
   • c.Upper(Text(System.customerName))
   • d.Upper(Text(Environment.customerName))
   Show answer and explanation

   Correct answer: a. Upper(Text(Topic.customerName))

   Explanation

   Power Fx requires the scope prefix. A variable owned by the current topic uses Topic., so Topic.customerName is the correct reference.

   Official references

   • Microsoft Learn
   • Official AB-620 study guide
10. Question 10Domain: Plan and configure agent solutionsMedium

    A warranty agent must validate a serial number, retrieve the purchase date, and create a service request only when the warranty is active. What is the best flow design?

    • a.Create the request before validating the serial number
    • b.Ask the language model to invent a purchase date when missing
    • c.Use explicit inputs, validation and retrieval steps, then a condition before the create action
    • d.Run all operations in parallel without dependencies
    Show answer and explanation

    Correct answer: c. Use explicit inputs, validation and retrieval steps, then a condition before the create action

    Explanation

    The flow should represent data dependencies and gate the side effect behind verified warranty state.

    Official references

    • Microsoft Learn
    • Official AB-620 study guide