COA Architecture & System Design 2

Question 1

Which OpenStack service is responsible for providing bare-metal provisioning as a service?

Accepted Answer

Ironic

Answer

Ironic is the OpenStack bare-metal provisioning service that manages and provisions physical machines.

Question 2

In a highly available OpenStack control plane, which component typically runs as an active-active cluster?

Accepted Answer

RabbitMQ message broker

Answer

RabbitMQ is commonly deployed as an active-active cluster to ensure message queue high availability across the control plane.

Question 3

What is the primary role of the Placement service (formerly part of Nova) in OpenStack?

Accepted Answer

Tracking resource provider inventories and allocations

Answer

The Placement service tracks resource provider inventories (CPU, RAM, disk, custom resources) and allocations to enable efficient scheduling decisions.

Question 4

Which topology would you choose to provide both north-south and east-west traffic routing entirely within the OpenStack network plane without relying on an external router?

Accepted Answer

Self-service (tenant) networks with a virtual router

Answer

Self-service tenant networks with a Neutron virtual router handle both north-south (external) and east-west (inter-tenant) routing within OpenStack.

Question 5

In the OpenStack architecture, what does the term 'cell' refer to in Nova's cell architecture?

Accepted Answer

A partition of compute nodes sharing a local database and message queue

Answer

A Nova cell is a scalability partition consisting of compute nodes with their own local database and message queue, reducing load on the global API cell.

(COA) Certified OpenStack Administrator Exam Practice Test

(COA) Certified OpenStack Administrator Exam Practice Test

COA Architecture & System Design 2