Microsoft Azure Fundamentals (AZ-900) Exam Prep：Azure core architecture: regions, zones and resource hierarchy

1. 第1题，共15题

   What is an Azure region?

   • AA container that holds related resources for one app
   • BAn area with one or more nearby, linked datacentres
   • CA group of subscriptions that share one invoice
   • DA single rack of servers inside one datacentre
   显示答案

   答案: B. An area with one or more nearby, linked datacentres

   A region is a geographical area with at least one, and often several, datacentres that are close together and linked by a low-latency network.

2. 第2题，共15题

   What is an availability zone?

   • AAn isolated instance of Azure for government agencies
   • BA pair of regions at least 300 miles apart
   • CA separate datacentre in a region with its own power and cooling
   • DA folder in the Azure portal that organizes resources by team and project
   显示答案

   答案: C. A separate datacentre in a region with its own power and cooling

   Availability zones are physically separate datacentres within a region, each with independent power, cooling and networking.

3. 第3题，共15题

   At minimum, how many availability zones does a region that supports zones have?

   • AOne
   • BTwo
   • CThree
   • DSix
   显示答案

   答案: C. Three

   Every availability zone-enabled region has a minimum of three separate availability zones.

4. 第4题，共15题

   Which order of the Azure resource hierarchy goes from the largest scope to the smallest?

   • AManagement groups, subscriptions, resource groups, resources
   • BResources, resource groups, management groups, subscriptions
   • CResource groups, subscriptions, management groups, resources
   • DSubscriptions, management groups, resources, resource groups
   显示答案

   答案: A. Management groups, subscriptions, resource groups, resources

   Management groups sit above subscriptions, subscriptions contain resource groups, and resource groups contain resources.

5. 第5题，共15题

   How many resource groups can one resource belong to at a time?

   • AExactly one
   • BUp to two
   • CAs many as you need
   • DUp to six
   显示答案

   答案: A. Exactly one

   Every resource must belong to exactly one resource group. Some resources can be moved, but a resource is in only one group at a time.

6. 第6题，共15题

   You delete a resource group. What happens to the resources inside it?

   • AThey are deleted too
   • BThey stay in place but lose their tags
   • CThey move up to the subscription level
   • DThey move to a default resource group
   显示答案

   答案: A. They are deleted too

   Deleting a resource group deletes everything in it, so check its contents first.

7. 第7题，共15题

   Which statement about resource groups is true?

   • AA resource group can contain whole subscriptions
   • BOne resource can belong to several resource groups
   • CA resource group can't be placed inside another resource group
   • DA resource group can be renamed whenever you like
   显示答案

   答案: C. A resource group can't be placed inside another resource group

   Resource groups can't be nested, and they can't be renamed after they are created.

8. 第8题，共15题

   A company wants separate invoices and separate access rules for its production and development work. What should it create?

   • AA separate Azure account for every employee
   • BSeparate subscriptions
   • CSeparate tags on every resource
   • DSeparate availability zones for each team
   显示答案

   答案: B. Separate subscriptions

   A subscription is both a billing boundary, with its own invoice, and an access control boundary.

9. 第9题，共15题

   Which of these Azure services doesn't ask you to choose a region?

   • AAzure Virtual Machines
   • BAzure Virtual Desktop
   • CAzure Kubernetes Service
   • DAzure DNS
   显示答案

   答案: D. Azure DNS

   Some global services, such as Microsoft Entra ID, Azure Traffic Manager and Azure DNS, don't require you to select a region.

10. 第10题，共15题

    How far apart are most Azure region pairs?

    • AAt least 3,000 miles (about 4,800 km)
    • BOn two different continents
    • CAt least 300 miles (about 480 km)
    • DAt least 30 miles (about 48 km)
    显示答案

    答案: C. At least 300 miles (about 480 km)

    Most regions are paired with another region in the same geography that is at least 300 miles away.

11. 第11题，共15题

    How are planned Azure updates rolled out to a region pair?

    • AOnly to the region with fewer customers
    • BNever, because paired regions are not updated
    • CTo one region of the pair at a time
    • DTo both regions at exactly the same time
    显示答案

    答案: C. To one region of the pair at a time

    Planned updates roll out to paired regions one region at a time to reduce downtime and the risk of an outage.

12. 第12题，共15题

    You deploy a virtual machine into one specific availability zone that you choose. What kind of service is this?

    • AA zone-redundant service
    • BA non-regional service
    • CA zonal service
    • DA sovereign service
    显示答案

    答案: C. A zonal service

    Zonal services are pinned to one zone, such as VMs, managed disks and IP addresses. Zone-redundant services are replicated across zones by Azure.

13. 第13题，共15题

    Which statement about the Azure sovereign regions in China is correct?

    • AThey are part of the main Azure instance, with no isolation at all
    • BThey are run by screened US government personnel
    • CThey are offered with 21Vianet, not run directly by Microsoft
    • DEach one is paired with a region in Europe
    显示答案

    答案: C. They are offered with 21Vianet, not run directly by Microsoft

    China East, China North and other China regions are available through a partnership between Microsoft and 21Vianet, and Microsoft doesn't directly maintain those datacentres.

14. 第14题，共15题

    Not counting the root level or the subscription level, how many levels deep can management groups be nested?

    • ATwo
    • BSix
    • CThree
    • DTen
    显示答案

    答案: B. Six

    Management groups can be nested up to six levels deep, not counting the root level or the subscription level.

15. 第15题，共15题

    An administrator applies a policy to a management group that limits virtual machines to one location. What happens?

    • AEach subscription owner can choose to override it
    • BOnly management groups created later get the policy
    • CEvery subscription under that group inherits the policy
    • DIt applies only to VMs created in the Azure portal
    显示答案

    答案: C. Every subscription under that group inherits the policy

    Settings applied to a management group flow down to every subscription under it, and a subscription owner can't override an inherited policy.

键盘：按1–4作答，按 Enter 进入下一题。

真实考试：700 or greater (scale of 1 to 1,000)