A company has defined the following resources in Azure: 10 Public IP (AZ-900)

Correct answer: B) No.
Removing the users from Azure AD alone likely won't reduce the cost of the Azure account.

The cost of Azure Active Directory (Azure AD) is based on the licensing tier assigned to the users, not the number of users itself. There are free and paid tiers available, so removing users might not result in a change in licensing costs.

Here's a breakdown of the cost factors:

Azure AD Free tier: This free tier supports basic functionalities like user management and group creation for a limited number of users.

Azure AD Premium P1: This paid tier offers additional features like security controls and advanced reporting.

Azure AD Premium P2: This tier includes all the features of P1 along with identity governance capabilities.

In your scenario, if the company is using the free tier of Azure AD, removing users wouldn't impact the cost. Even for paid tiers, the cost is often based on per-user licenses, not on the total number of users. There might be a minimum user license requirement, so removing a small number of users might not bring the count below that threshold.

However, there are other resources in Azure that can contribute to the overall cost:

Public IP addresses: Azure charges for public IP addresses. Reducing the number of public IPs to what's actually needed can help save costs.