CDIA Storage Solutions 2 — Questions and Answers
Question 1: Which storage technology uses spinning magnetic platters and mechanical read/write heads to store document images?
- Solid-State Drive (SSD)
- Hard Disk Drive (HDD) (Correct answer)
- Optical Disc
- Flash Memory
Correct answer: Hard Disk Drive (HDD)
Hard Disk Drives (HDDs) use spinning magnetic platters with mechanical read/write heads, making them cost-effective for large-volume document storage.
Question 2: In a document imaging system, what is 'hierarchical storage management' (HSM)?
- A method of organizing documents by importance level
- An automated process that migrates data between storage tiers based on usage patterns (Correct answer)
- A security protocol for classifying sensitive documents
- A backup strategy that creates multiple copies at different sites
Correct answer: An automated process that migrates data between storage tiers based on usage patterns
HSM automatically moves data between high-performance and lower-cost storage tiers based on access frequency and defined policies.
Question 3: What does 'WORM' storage stand for in document imaging?
- Write Once Read Many (Correct answer)
- Wide Object Record Management
- Wireless Optical Record Media
- Write Over Record Mode
Correct answer: Write Once Read Many
WORM (Write Once Read Many) storage prevents modification or deletion of stored documents, making it ideal for compliance and legal record retention.
Question 4: Which RAID level provides disk mirroring without striping, offering the highest redundancy for two drives?
- RAID 0
- RAID 1 (Correct answer)
- RAID 5
- RAID 6
Correct answer: RAID 1
RAID 1 mirrors data across two drives exactly, providing full redundancy so that if one drive fails, the other contains a complete copy.
Question 5: What is the primary advantage of using a Content Addressable Storage (CAS) system for document imaging?
- Lower cost per gigabyte than tape storage
- Documents are retrieved by their content hash rather than file path, ensuring integrity (Correct answer)
- Faster write speeds than SSD storage
- Eliminates the need for backup procedures
Correct answer: Documents are retrieved by their content hash rather than file path, ensuring integrity
CAS assigns a unique hash to each document based on its content, enabling fast retrieval by content identifier and verifying data integrity on access.
Question 6: In cloud storage for document imaging, what does 'eventual consistency' mean?
- All nodes will reflect the same data after a period of time, but may temporarily diverge (Correct answer)
- Data is immediately consistent across all nodes after every write
- Storage capacity will eventually reach a maximum limit
- Documents will eventually be deleted after their retention period
Correct answer: All nodes will reflect the same data after a period of time, but may temporarily diverge
Eventual consistency means distributed storage nodes will converge to the same data state over time, though brief inconsistencies may exist immediately after a write.
Question 7: Which storage metric best describes how quickly a storage system can begin delivering data after a request is made?
- Throughput
- Latency (Correct answer)
- IOPS
- Bandwidth
Correct answer: Latency
Latency measures the delay between initiating a storage request and receiving the first byte of data, directly impacting user experience in document retrieval.
CDIA Storage Solutions 2
Which storage technology uses spinning magnetic platters and mechanical read/write heads to store document images?