Multiple choice

Extents are a logical collection of contiguous ___________.

  1. Segments

  2. Database blocks

  3. Table spaces

  4. operating system blocks
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In Oracle's storage hierarchy: a data block is the smallest unit, an EXTENT is a contiguous collection of data blocks, a SEGMENT is a collection of extents (like a table or index), and a TABLESPACE contains segments. Therefore, extents are composed of contiguous database blocks (option B), not operating system blocks, table spaces, or segments.

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