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
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.
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.
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.
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.
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.
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.
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.