Practice Test Geeks(COA) Certified OpenStack Administrator Exam Practice Test
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Implementation & Configuration Flashcards

7 cards from real COA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the purpose of the 'openstack server suspend' command versus 'openstack server stop'?

    Answer: Suspend saves the instance state to memory on the hypervisor (paused) while stop performs a graceful OS shutdown

    Suspend (pause) saves the instance state in hypervisor memory and freezes execution, while stop (shelve or shutdown) performs a graceful shutdown of the guest OS.

  2. In Cinder, which backend driver is used when configuring NFS as a storage backend?

    Answer: cinder.volume.drivers.nfs.NfsDriver

    The NfsDriver located at cinder.volume.drivers.nfs.NfsDriver is the standard Cinder volume driver for NFS-based storage backends.

  3. Which Heat template section defines user-supplied input values that customize a stack at launch time?

    Answer: parameters

    The 'parameters' section in a HOT (Heat Orchestration Template) defines values that users provide when creating or updating a stack.

  4. How does Nova handle a live migration when the destination host lacks shared storage?

    Answer: Block migration is used, copying the instance disk from source to destination over the network

    Block live migration (--block-migrate) copies the instance's disk data to the destination host while the instance continues running, enabling live migration without shared storage.

  5. Which OpenStack service is responsible for providing a DNS-as-a-Service capability?

    Answer: Designate

    Designate is the OpenStack DNS-as-a-Service project that provides an API for managing DNS zones and record sets.

  6. In Keystone, what is the difference between a 'role' and a 'policy'?

    Answer: A role is a label assigned to a user on a project; a policy (policy.yaml) maps roles to permitted API actions

    Roles are simple labels (e.g., 'admin', 'member') assigned via role assignments; policy.yaml files on each service map those roles to specific API operations.

  7. Which command uploads a local image file to Glance with the raw disk format and bare container format?

    Answer: openstack image create --disk-format raw --container-format bare --file

    The 'openstack image create' command with '--disk-format', '--container-format', and '--file' flags is the correct unified CLI syntax to upload an image to Glance.