How is data stored in Amazon Simple Storage Service (Amazon S3) for high durability?
A. Data is automatically replicated to other regions.
B. Data is automatically replicated within a region.
C. Data is replicated only if versioning is enabled on the bucket.
D. Data is automatically backed up on tape and restored if needed.
Answer: B. Data is automatically replicated within a region.
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A base class’s members are accessible anywhere that the app has a reference to an object of that base class or to an object of any of its derived classes.
Fill in the blank(s) with the appropriate word(s).
Design one or more tables for managing a list of courses run by your university. How many tables do you need? What fields are in each table? Be sure to include such data as the instructor’s names, number of credits, department that offers the course, and the current enrollment in the course.
What will be an ideal response?