Practice Test 1 | Google Cloud Certified Professional Data Engineer | Dumps | Mock Test
You have been using BigTable instance with HDD as storage type. You want to increase the performance of the instance by changing the storage type to SSD. You want to make sure the data will not be lost. How can you achieve that?
A. Use Dataflow to export data from the existing BigTable instance to the new instance.
B. From Google Cloud console UI, you can switch the storage type from HDD to SDD. Data will be moved to new storage type. Instance will be inaccessible by this time until migration is complete.
C. From Google Cloud console UI, you can switch the storage type from HDD to SDD. Data will be moved to new storage type. Instance will be in read-only mode by this time until migration is complete.
D. You need to change the instance from development to production.
Answer: A.
You can change cluster IDs only by deleting and recreating the cluster. Also, you cannot change the instance ID or the instance’s storage type, and you cannot downgrade a production instance to a development instance. To change any of these settings, you must create a new instance with your preferred settings; export your data from the old instance; import your data into the new instance; and delete the old instance.
From the description above, the best solution is using Dataflow to migrate data from the old BigTable instance to the new one.
All other answers are incorrect based on the description.
Source(s):
BigTable – Modifying a Cloud Bigtable Instance: https://cloud.google.com/bigtable/docs/modifying- instance
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