According to CAP, in a partitioned network you must choose between which two properties?

According to CAP, in a partitioned network you must choose between which two properties?

• A. Consistency and Availability.
• B. Consistency and Partition Tolerance.
• C. Availability and Partition Tolerance.
• D. All three.

Answer: (A)

CAP theorem shows you can't have all three properties when the network can partition. In a partitioned network, Partition Tolerance is a given, so you must choose between keeping data consistent across nodes or keeping the system responsive to requests. If you favor consistency, you may have to restrict or delay operations during a partition, lowering availability. If you favor availability, you may return results that are not fully up-to-date, sacrificing strong consistency. Therefore the two properties you balance in this scenario are Consistency and Availability. The other options don’t fit because keeping all three isn’t possible during a partition, and choosing Partition Tolerance with one of the other properties implies sacrificing the remaining one.

CAP theorem shows you can't have all three properties when the network can partition. In a partitioned network, Partition Tolerance is a given, so you must choose between keeping data consistent across nodes or keeping the system responsive to requests. If you favor consistency, you may have to restrict or delay operations during a partition, lowering availability. If you favor availability, you may return results that are not fully up-to-date, sacrificing strong consistency. Therefore the two properties you balance in this scenario are Consistency and Availability. The other options don’t fit because keeping all three isn’t possible during a partition, and choosing Partition Tolerance with one of the other properties implies sacrificing the remaining one.