SK0-003 · Question #249
Which of the following is designed to guarantee that once data is written it cannot be modified? (Select TWO).
The correct answer is C. CD-R E. WORM. This question asks to identify two storage technologies designed to prevent modification of data once it has been written.
Question
Which of the following is designed to guarantee that once data is written it cannot be modified? (Select TWO).
Options
- AFlash
- BDLT4 tapes
- CCD-R
- DSDLT tapes
- EWORM
How the community answered
(32 responses)- A3% (1)
- C94% (30)
- D3% (1)
Why each option
This question asks to identify two storage technologies designed to prevent modification of data once it has been written.
Flash memory can be rewritten multiple times, so it does not guarantee data immutability.
DLT4 tapes are magnetic tapes that allow data to be written, erased, and rewritten, thus not guaranteeing immutability.
CD-R (Compact Disc-Recordable) media is a write-once, read-many optical disc format, meaning that once data is written to it, it cannot be erased or modified.
SDLT tapes are magnetic tapes that allow data to be written, erased, and rewritten, thus not guaranteeing immutability.
WORM (Write Once Read Many) is a type of data storage that ensures data, once written, cannot be altered or deleted, making it ideal for compliance and archival purposes.
Concept tested: Data immutability storage technologies
Source: https://learn.microsoft.com/en-us/azure/storage/blobs/immutable-storage-overview
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