Describe Azure architecture and services for Microsoft Azure Fundamentals (AZ-900)

Sample Practice Questions

1. Question 1

   Your company has datacenters in Los Angeles and New York. The company has a Microsoft Azure subscription. You are configuring the two datacenters as geo-clustered sites for site resiliency. You need to recommend an Azure storage redundancy option. You have the following data storage requirements: Data must be stored on multiple nodes. Data must be stored on nodes in separate geographic locations. Data can be read from the secondary location as well as from the primary location Which of the following Azure stored redundancy options should you recommend?
   1. A. Geo-redundant storage
   2. B. Read-only geo-redundant storage
   3. C. Zone-redundant storage
   4. D. Locally redundant storage
   Explanation

   The correct answer is: B. Read-only geo-redundant storage.

   Read-access geo-redundant storage keeps six replicas in total, three synchronously in the primary region and three asynchronously in the paired secondary region, and it uniquely exposes the secondary endpoint for read operations, which directly satisfies the requirement that data be readable from both sites. Plain geo-redundant storage also holds six copies across two regions, but the secondary is only available for read access after a failover, so it does not meet the live read-from-secondary requirement. Zone-redundant storage keeps three copies across availability zones inside a single region and therefore does not span separate geographic locations at all. Locally redundant storage keeps three copies inside one datacenter, providing no geographic separation and no secondary endpoint for clients to read from.

2. Question 2

   Your developers have created 10 web applications that must be host on Azure. You need to determine which Azure web tier plan to host the web apps. The web tier plan must meet the following requirements: The web apps will use custom domains. The web apps each require 10 GB of storage. The web apps must each run in dedicated compute instances. Load balancing between instances must be included. Costs must be minimized. Which web tier plan should you use?
   1. A. Standard
   2. B. Basic
   3. C. Free
   4. D. Shared
   Explanation

   The correct answer is: A. Standard.

   App Service's Standard tier is the lowest plan that delivers everything required: custom domain bindings, dedicated compute instances rather than shared hosts, built-in load balancing across instance counts, and ample storage well above the 10 GB requirement, which keeps cost down compared with Premium tiers. The Basic tier supports custom domains and dedicated instances but lacks load-balancing features and autoscale, so it fails the requirement set. The Free tier runs on shared infrastructure with no custom domain support, no SLA, and tight quotas, making it unsuitable for production web apps. The Shared tier also runs on shared compute with metered CPU minutes and does not provide dedicated instances or load balancing, so it cannot satisfy the workload either.

3. Question 3

   Note: The question is included in a number of questions that depicts the identical set-up. However, every question has a distinctive result. Establish if the solution satisfies the requirements. You are planning to migrate a company to Azure. Each of the company's numerous divisions will have an administrator in place to manage the Azure resources used by their respective division. You want to make sure that the Azure deployment you employ allows for Azure to be segmented for the divisions, while keeping administrative effort to a minimum. Solution: You plan to make use of several Azure Active Directory (Azure AD) directories. Does the solution meet the goal?
   1. A. Yes
   2. B. No
   Explanation

   The correct answer is: B. No.

   Creating multiple Microsoft Entra ID directories for a single company fragments identity, because each directory is a separate tenant with its own users, groups, and trust boundary, so divisional administrators end up duplicating accounts and managing cross-tenant guest access, which increases administrative effort rather than reducing it. The simpler approach is to keep one directory and segment Azure using multiple subscriptions or resource groups with scoped RBAC for each division. Selecting Yes is incorrect because the proposal makes administration harder, not easier. Selecting No is correct because the requirement explicitly demands minimal administrative effort, and multiple tenants is one of the most administration-heavy ways to divide Azure resources between divisions of the same organization for any practical workload at all.

4. Question 4

   Your developers have created a portal web app for users in the Miami branch office. The web app will be publicly accessible and used by the Miami users to retrieve customer and product information. The web app is currently running in an on-premises test environment. You plan to host the web app on Azure. You need to determine which Azure web tier plan to host the web app. The web tier plan must meet the following requirements: The website will use the miami.weyland.com URL. The website will be deployed to two instances. SSL support must be included. The website requires 12 GB of storage. Costs must be minimized. Which web tier plan should you use?
   1. A. Standard
   2. B. Basic
   3. C. Free
   4. D. Shared
   Explanation

   The correct answer is: A. Standard.

   Standard is correct because it is the lowest Azure App Service tier that supports custom domains, custom SSL certificates, multiple deployment instances, autoscale, and provides 50 GB of storage along with dedicated compute, satisfying the custom URL, two instances, SSL, and 12 GB requirements while keeping cost low. Basic supports custom domains and SSL but lacks features like autoscale and traffic-management slots typical of production sites. Free and Shared run on shared infrastructure and do not allow custom SSL bindings or guaranteed compute, so they cannot host an SSL-enabled custom hostname, making Standard the cheapest tier that satisfies every stated requirement in the scenario.

5. Question 5

   Note: The question is included in a number of questions that depicts the identical set-up. However, every question has a distinctive result. Establish if the solution satisfies the requirements. Your company is planning to migrate all their virtual machines to an Azure pay-as-you-go subscription. The virtual machines are currently hosted on the Hyper-V hosts in a data center. You are required make sure that the intended Azure solution uses the correct expenditure model. Solution: You should recommend the use of the elastic expenditure model. Does the solution meet the goal?
   1. A. Yes
   2. B. No
   Explanation

   The correct answer is: B. No.

   The elastic expenditure model is not a recognised Azure or cloud pricing term, so the answer is No. Azure expenditure models are operational expenditure with pay-as-you-go consumption-based billing and capital-style commitments such as reserved instances or savings plans for compute. Moving from on-premises Hyper-V to a pay-as-you-go subscription shifts capital expenditure to operational expenditure, not to a fictional elastic model that does not appear in Microsoft documentation. Selecting Yes would invent a category that Microsoft does not use. No correctly identifies that the recommended terminology does not match Azure's actual commercial model and so the solution fails the requirement.

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