IBM
A2030-136 · Question #52
Using Brewer's CAP theorem as a guide for choosing between alternative data storage technologies, which two distributed system properties does Apache HBase (part of Hadoop) guarantee?
The correct answer is A. Consistency - all nodes see the same data at the same time. C. Atomicity - if one part of a transaction fails, the entire transaction fails. See the full explanation below for the reasoning.
Question
Using Brewer's CAP theorem as a guide for choosing between alternative data storage technologies, which two distributed system properties does Apache HBase (part of Hadoop) guarantee?
Options
- AConsistency - all nodes see the same data at the same time.
- BConcurrency control - correct results for concurrent operations.
- CAtomicity - if one part of a transaction fails, the entire transaction fails.
- DPartition tolerance - the system continues to operate despite arbitrary message loss.
- EAvailability - every request receives a response about whether it was successful or failed
How the community answered
(37 responses)- A73% (27)
- B5% (2)
- D8% (3)
- E14% (5)
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