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Data Management & Integration 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.

Read the first 7 Data Management & Integration flashcards as text
  1. Which command lists all Cinder volume types available in an OpenStack deployment?

    Answer: openstack volume type list

    The unified OpenStack CLI command `openstack volume type list` displays all configured Cinder volume types.

  2. An operator needs to allow a volume to be simultaneously attached to multiple instances. Which Cinder volume property must be enabled?

    Answer: multiattach

    Setting the `multiattach` property to `true` on a Cinder volume allows it to be attached to more than one instance at the same time.

  3. When integrating Ceph as a Cinder backend, which Ceph concept maps directly to a Cinder volume?

    Answer: RADOS Block Device (RBD) image

    Each Cinder volume stored in Ceph corresponds to a RADOS Block Device (RBD) image within a Ceph pool.

  4. Which Swift feature allows grouping multiple objects into a single archive upload that is automatically extracted server-side?

    Answer: Bulk operations / tar extraction

    Swift's bulk operations middleware allows uploading a .tar, .tar.gz, or .tar.bz2 archive and having Swift automatically extract and store each contained file as a separate object.

  5. A Glance image in 'queued' state means:

    Answer: The image ID has been reserved but no image data has been uploaded yet

    A 'queued' Glance image has had its metadata registered and an ID assigned, but no binary image data has been uploaded to the store yet.

  6. What is the recommended way to transfer a Cinder volume from one OpenStack project to another?

    Answer: Use `openstack volume transfer request create` and accept it in the target project

    The volume transfer mechanism using `openstack volume transfer request create/accept` safely moves ownership between projects without copying data.

  7. In Manila, what is a 'share replica' used for?

    Answer: Providing high availability and disaster recovery by replicating share data to another backend

    Manila share replicas enable data replication of a share across different backends or pools, providing high availability and disaster recovery capabilities.