What are the following descriptions of open source OpenStack components, and what are the errors?
A.
The OpenStack architecture includes not only the components of computing, network, and storage, but also other module components such as orchestration and shared services
B.
The OpenStack computing resource architecture adopts a multi-level architecture, from top to bottom: Region and Host Aggregate 、AZ
C.
OpenStack controls and manages corresponding resources through the collaborative interaction of various components
D.
OpenStack uses Ceilometer components to monitor business modules, including: Cinder, Neutron , Nova, Swift、 Glance
Analysis: Option B Error: The computing resource architecture hierarchy from top to bottom is: Region, AZ, HostAggregateD Error: The cause is as shown in the following figure
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