OpenStack OpenStack MCQ 4

Question 1

What is the function of a Glance image 'property' in OpenStack?

Accepted Answer

Stores arbitrary key-value metadata attached to an image

Answer

Glance image properties are custom key-value metadata fields that can influence Nova's behavior or store descriptive info.

Question 2

Which policy controls access to OpenStack APIs and is defined in a JSON or YAML file?

Accepted Answer

RBAC policy.json

Answer

OpenStack uses a policy.json (or policy.yaml) file implementing RBAC to define which roles can call which API actions.

Question 3

In OpenStack Neutron, what is a 'security group'?

Accepted Answer

A set of IP filter rules controlling inbound and outbound traffic for instances

Answer

Security groups are stateful firewall rules that control network traffic allowed to and from virtual machine instances.

Question 4

What does 'live migration' mean in OpenStack Nova?

Accepted Answer

Moving a running instance from one compute host to another without downtime

Answer

Live migration transfers a running VM's memory and state to another host with minimal or no interruption to the workload.

Question 5

Which OpenStack service is used for secret management, such as storing encryption keys and certificates?

Accepted Answer

Barbican

Answer

Barbican is OpenStack's Key Manager service that securely stores, provisions, and manages secrets like keys and certificates.

OpenStack Practice Test