Data independence MCQs in DBMS

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1. Which of the following storage media is known for having the fastest data access time?



2. In the context of DBMS, what is a ‘block’?



3. Which of the following is primarily used for archival storage due to its sequential access nature?



4. In a DBMS, the term ‘seek time’ refers to:



5. What is the purpose of using RAID (Redundant Array of Independent Disks) in data storage?



6. Which of the following RAID levels offers mirroring but no striping?



7. In a magnetic disk, data is organized into concentric circles called:



8. What is the main advantage of using an SSD over an HDD?



9. Which of the following is a type of non-volatile memory used in storage devices?



10. Which component of a hard disk drive (HDD) is responsible for reading and writing data?



11. In a disk drive, what is ‘rotational latency’?



12. Which type of storage device typically has the highest capacity?



13. What is the function of a ‘sector’ in the context of disk storage?



14. Which of the following is an advantage of using magnetic tapes for data storage?



15. What does the ‘write-through’ method in caching ensure?



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