Multiple choice technology mainframe

Cornerstone of storage hierarchy is

  1. Tapes

  2. DASD

  3. CPU Cache

  4. Central storage

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DASD (Direct Access Storage Device), such as disk drives, forms the cornerstone of mainframe storage hierarchy by providing online, direct-access storage. While tapes are used for archival, and CPU cache and central storage are volatile, DASD provides the primary persistent storage layer.