AZ-400 Continuous Delivery & Release Management 4

Question 1

A release pipeline must wait for an external system to signal readiness before proceeding. Which gate mechanism is most appropriate?

Accepted Answer

Invoke REST API gate

Answer

The 'Invoke REST API' gate polls an external endpoint and proceeds only when the API returns a success response, enabling integration with any external system.

Question 2

In YAML pipelines, what is the correct way to reference a secret variable stored in Azure Key Vault within a pipeline step?

Accepted Answer

Directly reference $(secretName) after linking the Key Vault variable group

Answer

By linking an Azure Key Vault to a variable group and referencing that variable group in the pipeline, secrets become available as $(secretName) at runtime.

Question 3

Which deployment pattern involves running two identical production environments, switching traffic between them for each release?

Accepted Answer

Blue-green deployment

Answer

Blue-green deployments maintain two identical environments; the router switches all traffic to the new (green) environment after validation, enabling instant rollback by switching back.

Question 4

What is the effect of setting 'trigger: none' at the top of an Azure Pipelines YAML file?

Accepted Answer

CI triggers are disabled; the pipeline runs only when manually triggered or via API

Answer

Setting 'trigger: none' disables automatic CI triggers so the pipeline only runs when manually queued, triggered by another pipeline, or via REST API.

Question 5

A team needs to ensure every production deployment is approved by at least two people from the security team. Where should this be configured in YAML pipelines?

Accepted Answer

In the Environments settings with an approval and check requiring two reviewers

Answer

Environment-level approvals in Azure Pipelines allow configuring required reviewers with minimum approval counts before any deployment to that environment proceeds.

AZ-400 Practice Test

AZ-400 Practice Test

AZ-400 Continuous Delivery & Release Management 4