OpenStack OpenStack Image Service (Glance) & Dashboard (Horizon) 2

Question 1

What is 'image caching' in the context of Nova and Glance?

Accepted Answer

Storing copies of Glance images locally on compute nodes to speed up instance boot

Answer

Nova image caching stores Glance images locally on compute nodes so subsequent boots of the same image are faster.

Question 2

What Horizon panel allows an admin to manage all tenant resources in OpenStack?

Accepted Answer

Admin panel

Answer

The Admin panel in Horizon provides administrators with visibility and management capabilities over all tenants' resources.

Question 3

Which Glance API feature allows sharing an image with specific OpenStack projects?

Accepted Answer

Image members

Answer

Glance image members allow a private image owner to share the image with specific projects by adding them as image members.

Question 4

What is the purpose of Horizon's 'Launch Instance' wizard?

Accepted Answer

Providing a step-by-step GUI workflow to configure and boot a new Nova VM instance

Answer

Horizon's Launch Instance wizard guides users through selecting an image, flavor, network, security groups, and key pair to boot a VM.

Question 5

What format does Glance support for storing image metadata?

Accepted Answer

Key-value properties stored in the Glance database alongside image records

Answer

Glance stores image metadata as key-value properties in the database, including architecture, OS type, and minimum disk requirements.

OpenStack Practice Test