Explanation/Reference:
Explanation:
With SQL Data Warehouse CPU, memory, and IO are bundled into units of compute scale called Data Warehouse Units (DWUs). A DWU represents an abstract, normalized measure of compute resources and performance. By changing your service level you alter the number of DWUs that are allocated to the system, which in turn adjusts the performance, and the cost, of your system.
Incorrect Answers:
A: Database Throughput Unit (DTU): DTUs provide a way to describe the relative capacity of a performance level of Basic, Standard, and Premium databases. DTUs are based on a blended measure of CPU, memory, reads, and writes. As DTUs increase, the power offered by the performance level increases.
Reference: https://docs.microsoft.com/en-us/azure/sql-data-warehouse/what-is-a-data-warehouse-unit- dwu-cdwu