OpenStack OpenStack MCQ 5

Question 1

What is the purpose of the 'placement' service introduced in OpenStack Queens?

Accepted Answer

Tracks resource inventories and allocations for scheduling decisions across providers

Answer

The Placement API tracks resource provider inventories (vCPUs, RAM, disk, custom resources) to guide Nova's scheduling.

Question 2

In OpenStack, what does a 'cell' architecture allow Nova to do?

Accepted Answer

Partition compute nodes into groups with separate message queues and databases to scale horizontally

Answer

Nova cells partition compute resources into independent groups with their own DB and MQ, enabling large-scale horizontal scaling.

Question 3

Which OpenStack component provides shared file system storage (NFS, CIFS) as a service?

Accepted Answer

Manila

Answer

Manila provides Shared File System as a Service, offering NFS and CIFS share management for instances.

Question 4

What is 'affinity' in the context of Nova server groups?

Accepted Answer

A rule that forces specified instances to run on the same compute host

Answer

The 'affinity' policy in Nova server groups ensures all members are scheduled to the same physical compute host.

Question 5

Which OpenStack service provides workflow and task orchestration for multi-step cloud processes?

Accepted Answer

Mistral

Answer

Mistral provides a workflow service for defining and executing multi-step processes as directed acyclic graphs (DAGs).

OpenStack Practice Test