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What is the main goal of storage deduplication in cloud computing?
a. Saving bandwidth
b. Eliminating duplicate data for storage efficiency
c. Enhancing data security
d. Increasing processing power
Answer: bwikipedia+2
Which of the following best describes data deduplication?
a. Compressing unique data to smaller sizes
b. Storing only single instances of repeated data and referencing duplicates
c. Encrypting stored files
d. Fragmenting data into multiple disks
Answer: bkomprise+2
In cloud computing, deduplication is most effective for which type of data?
a. Frequently changing data
b. Largely redundant or identical datasets such as backups
c. Encrypted data
d. System logs
Answer: bdatafloq+1
Which method is NOT a common deduplication technique?
a. File-level deduplication
b. Block-level deduplication
c. Byte-level deduplication
d. Network-level deduplication
Answer: dkomprise+1
What is an essential process in deduplication?
a. Data encryption
b. Chunking data into smaller segments or blocks
c. Increasing bandwidth usage
d. Fragmentation of storage
Answer: btsijournals+1
Inline deduplication happens:
a. Before backup begins
b. As data is written to storage
c. Only after data is restored
d. During data encryption
Answer: blearn.microsoft+1
How does post-process deduplication operate?
a. While data is being written
b. After data is stored on the disk
c. During data retrieval only
d. During network transfer
Answer: btsijournals+1
Which of these is most associated with deduplication in virtual servers?
a. Coalescing system files into shared storage
b. Increasing disk fragmentation
c. Reducing encryption overhead
d. Disabling block storage
Answer: awikipedia+1
What role does chunk fingerprinting play in deduplication?
a. Compressing data
b. Rapidly identifying duplicate chunks using hash algorithms
c. Increasing transfer speed
d. Encrypting chunks for privacy
Answer: bkomprise+1
What is the result when deduplication finds a duplicate data chunk?
a. Both are deleted
b. Only the unique chunk is kept; others are replaced by references
c. The oldest chunk is kept
d. Deduplication is skipped
Answer: bwikipedia+1
Which is a primary benefit of deduplication for cloud providers?
a. Eliminating encryption needs
b. Lowering operational storage costs
c. Increasing system downtime
d. Complex storage management
Answer: bbluexp.netapp+1
Data deduplication is most beneficial in scenarios with:
a. High diversity in files
b. Massive duplication, such as email systems with repeated attachments
c. Only unique file storage
d. Limited network connectivity
Answer: blearn.microsoft+1
Which action best follows identification of duplicate data blocks?
a. Remove the duplicates and reference single stored copy
b. Encrypt all duplicates
c. Send duplicates to offsite backup
d. Ignore the duplicates
Answer: atsijournals+1
What is the deduplication ratio if 100 identical 1 MB attachments are stored and only one is saved?
a. 1:1
b. 100:1
c. 50:1
d. 10:1
Answer: bwikipedia
Which hashing algorithms are commonly used for fingerprinting in deduplication?
a. SHA-1 and SHA-256
b. DES and 3DES
c. RSA and DSA
d. MD5 only
Answer: akomprise
Inline deduplication helps to:
a. Reduce storage space at the time of data ingestion
b. Increase network traffic
c. Make backups slower
d. Only function after data is written
Answer: alearn.microsoft+1
Which step comes first in deduplication?
a. Data chunking
b. Writing references
c. Data compression
d. Indexing by date
Answer: atsijournals+1
Which platform feature is closely related to deduplication in cloud environments?
a. Object storage efficiency
b. Massive redundancy
c. High latency networks
d. Manual hardware expansion
Answer: aplacementpreparation+1
What happens during block-level deduplication?
a. Files are compared only by name
b. Files are split into smaller blocks, and identical blocks are replaced by references
c. Only entire files are deduplicated
d. Computer restarts after deduplication
Answer: bdatafloq+1
Deduplication vs. compression: Deduplication aims to remove:
a. Large sections or files that repeat
b. Redundant bytes within files
c. File permissions
d. Metadata only
Answer: awikipedia
In cloud storage, which data transfer function can benefit from deduplication?
a. Bandwidth optimization for backups
b. Increasing access time
c. Data fragmentation
d. Reducing data security
Answer: adatafloq+1
Which deduplication type can be performed while the system is running?
a. Offline
b. Inline
c. Hybrid
d. Batch only
Answer: blearn.microsoft+1
Which is NOT a benefit of deduplication?
a. Storage savings
b. Faster backups
c. Reduced data integrity
d. Lower costs
Answer: cibm+2
Which storage mechanism in the cloud can suffer without deduplication?
a. Email archives with duplicate attachments
b. Encrypted file transfer only
c. Video streaming services only
d. None of the above
Answer: adatafloq+1
Chunk size impacts deduplication because:
a. Larger chunks detect less redundancy, smaller chunks improve detection but need more index space
b. Only smaller chunks work
c. Larger chunks are required by all systems
d. Chunk size is irrelevant
Answer: akomprise+1
Which cloud backup benefit is improved by deduplication?
a. Shorter backup times due to less data transferred and stored
b. Longer backup periods
c. Increased CPU load
d. More manual checks
Answer: adatafloq+1
Data deduplication guides cloud users to:
a. Use storage more efficiently by avoiding storing repeated data
b. Increase bandwidth at all costs
c. Backup everything twice
d. Use local storage only
Answer: atsijournals+1
What is a major challenge of deduplication for cloud security?
a. Reference management to prevent unauthorized data access
b. Increasing duplicate storage
c. Removing all user access
d. Increasing power use
Answer: atechscience+1
What happens if two blocks generate the same hash in deduplication systems?
a. Guaranteed duplication
b. Hash collision; additional checks required
c. Encryption failure
d. Data loss occurs immediately
Answer: bkomprise+1
Which of the following is a correct implementation step in deduplication?
a. Divide input data into blocks, hash each, store unique, reference duplicates
b. Encrypt before chunking
c. Restore before deduplication
d. Ignore data indexing
Answer: atsijournals+1
Deduplication is especially helpful for cloud applications such as:
a. Backup and disaster recovery
b. DNS resolution only
c. Video transcoding only
d. Web hosting exclusively
Answer: awikipedia+1
Which deduplication design is most effective for backup archives?
a. Block-level with variable-sized chunks
b. Byte-level only
c. File-level only
d. None of the above
Answer: adatafloq+1
What does single-instance storage mean in deduplication?
a. Only one copy of each data chunk is saved, all duplicates are pointers
b. Only one file can be stored
c. Files are split and re-encrypted
d. Encryption keys are unique per file
Answer: awikipedia+1
Which cloud storage challenge is directly addressed by deduplication?
a. Managing rapid data growth and redundancy
b. Automatic encryption
c. Adding new users
d. DNS lookup
Answer: adatafloq+1
What is critical for high deduplication efficiency?
a. High degree of data similarity
b. More unique data
c. More network devices
d. Larger block sizes only
Answer: atsijournals+1
What is a common deduplication algorithm step?
a. Compare fingerprints (hashes) of chunks to stored records
b. Encrypt data before comparing
c. Always compare metadata first
d. Restore data fully before analysis
Answer: akomprise+1
What storage cost impact does deduplication have for cloud vendors?
a. Reduces physical disks required
b. Increases cooling expenses
c. Lowers CPU requirements only
d. Has no impact
Answer: abluexp.netapp+1
Deduplication can occur at which cloud storage layers?
a. Block, file, byte
b. RAM only
c. Cache only
d. User interface only
Answer: akomprise+1
Why is reference management essential in deduplication?
a. Prevents accidental deletion of unique data chunks
b. Randomly encrypts data
c. Schedules backups
d. Forces manual checks
Answer: atechscience+1
Which is a disadvantage of a very small chunk size in deduplication?
a. Larger index tables and processing overhead
b. Misses most duplicates
c. Fails to save any space
d. Increases duplicate storage
Answer: atsijournals+1
Deduplication combined with compression results in:
a. Maximum storage savings
b. Redundant processing
c. Longer backup windows
d. Loss of data
Answer: awikipedia+1
Cloud deduplication solutions often require:
a. Detailed tracking of chunk usage history
b. Immediate data deletion
c. Storage encryption only
d. No management at all
Answer: atechscience+1
What is a potential security risk in deduplication with multi-users?
a. Exposure of data references across tenants
b. Automatic re-encryption
c. Data always remains private
d. All users get isolated chunks
Answer: atechscience
Which technology is closely linked to data deduplication in cloud optimization?
a. WAN optimization
b. Network VLANs
c. Firewall proxies
d. IPv6 tunneling
Answer: adatafloq+1
Deduplication in cloud computing is mostly used to:
a. Optimize backup and archival storage
b. Encrypt sensitive files only
c. Host virtual private networks
d. Replace database storage
Answer: alearn.microsoft+1
Duplicate data in cloud storage directly leads to:
a. Wasted storage space and higher costs
b. Improved throughput
c. Lower backup frequency
d. Enhanced encryption
Answer: aibm+2
When deduplication is applied during data ingestion, it is called:
a. Inline deduplication
b. Offline deduplication
c. Hybrid deduplication
d. Parallel deduplication
Answer: alearn.microsoft+1
What overhead does deduplication add to a system?
a. Indexing and tracking fingerprinted chunks
b. Slower hashing
c. No additional overhead
d. Manual tracking only
Answer: akomprise+1
Which is an effective practice for deduplicating cloud native workloads?
a. Variable-size chunking combined with robust fingerprinting
b. Only compressing data
c. Ignoring references between chunks
d. Deduplicate entire files only
Answer: atsijournals+1
Ultimately, deduplication in cloud environments helps organizations:
a. Achieve efficient, cost-effective, and scalable data storage by removing redundant information
b. Lose important data
c. Need more servers
d. Encrypt everything by default
Answer: abluexp.netapp+2

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