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What is the primary purpose of storage compression in cloud computing?
a. To increase data redundancy
b. To reduce storage costs and space required
c. To enhance bandwidth consumption
d. To decrease CPU utilization
Answer: b. To reduce storage costs and space requireddatamation+2
Which of the following is NOT an advantage of data compression in cloud storage?
a. Reduces storage expenses
b. Optimizes network bandwidth
c. Prevents data breaches
d. Minimizes transmission time
Answer: c. Prevents data breachesmassedcompute+2
Data compression in cloud storage helps organizations by:
a. Allowing more data to be stored in the same space
b. Increasing the number of servers required
c. Decreasing storage density
d. Reducing file availability
Answer: a. Allowing more data to be stored in the same spacenetzero-events+2
Which data compression method is best for text and PDF files in cloud storage, delivering high compression ratio without data loss?
a. JPEG
b. LZW
c. Huffman Coding
d. MP3
Answer: c. Huffman Codingijset
What is a key consideration when choosing a compression method for real-time cloud storage?
a. Processing speed
b. File name length
c. Server location
d. IP address allocation
Answer: a. Processing speedijset
Which of these is a LOSSLESS compression algorithm commonly used in cloud storage?
a. LZW
b. JPEG
c. MP3
d. GIF
Answer: a. LZWrjwave+1
By what percentage can SNIA studies show storage capacity requirements may be reduced with compression across all storage tiers?
a. 10%
b. 25%
c. 49%
d. 90%
Answer: c. 49%netzero-events
What is the main reason organizations compress data before cloud migration?
a. To increase data fragmentation
b. To save bandwidth and storage costs
c. To complicate data retrieval
d. To expose sensitive data
Answer: b. To save bandwidth and storage costsdatamation+2
Which type of data is most suited for lossy compression in cloud environments?
a. Text
b. Database tables
c. Multimedia files (images, audio)
d. Encryption keys
Answer: c. Multimedia files (images, audio)scribd+1
What compression technique uses a dictionary to replace repeating patterns in data?
a. Run Length Encoding
b. JPEG
c. LZW
d. Huffman Coding
Answer: c. LZWijcaonline+1
Which compression technique is generally used for images and achieves high storage savings but at the cost of some quality?
a. LZW Compression
b. Huffman Coding
c. JPEG Compression
d. Brotli Compression
Answer: c. JPEG Compressionijset
Compression in cloud storage primarily affects:
a. Only network speed
b. Only energy consumption
c. Both storage and network optimization
d. Database indexing only
Answer: c. Both storage and network optimizationpurestorage+2
What is the effect of data compression on energy consumption in cloud data centers?
a. Increases energy costs
b. No effect on energy
c. Leads to significant energy savings
d. Only increases cooling costs
Answer: c. Leads to significant energy savingspurestorage+1
Lossless compression methods in cloud computing are used for:
a. Text, code, and medical data where accuracy is critical
b. Video streaming only
c. Removing encryption
d. Reducing server clusters
Answer: a. Text, code, and medical data where accuracy is criticalijcaonline+1
Cloud providers typically charge customers based on:
a. Number of user logins
b. Data type uploaded
c. Amount of data stored and bandwidth used
d. Server processing speed
Answer: c. Amount of data stored and bandwidth usedbarracuda+2
Why is data deduplication used along with compression in cloud storage?
a. To speed up CPU cycles
b. To eliminate redundant data copies, saving space
c. To slow down data transfer
d. To encrypt data
Answer: b. To eliminate redundant data copies, saving spaceijeecs.iaescore
Compression ratio is defined as:
a. Output file size divided by input file size
b. Input file size divided by output file size
c. Multiply the input and output sizes
d. Difference between input and output sizes
Answer: b. Input file size divided by output file sizescribd
Which cloud storage scenario benefits most from real-time compression?
a. Cold data archive
b. Frequent data transfers
c. Unused data
d. Disconnected backup
Answer: b. Frequent data transfersnetzero-events+1
Which is a common use case for storage compression in the cloud?
a. Increasing file size for archival
b. Optimizing space for backups
c. Reducing server redundancy
d. Expanding public IP addresses
Answer: b. Optimizing space for backupsstorware+2
Which of the following is TRUE regarding compression overhead?
a. Compression always accelerates CPU
b. Compression can introduce computational overhead
c. Compression slows down file transfer
d. Compression has no impact on performance
Answer: b. Compression can introduce computational overheadnetzero-events
In hybrid cloud storage, compression helps by:
a. Enhancing file system fragmentation
b. Lowering transmission times and saving storage
c. Increasing the storage footprint
d. Reducing data availability
Answer: b. Lowering transmission times and saving storagestorware
Compression of inactive files in cloud storage is also known as:
a. Tiering
b. Archiving
c. Sharding
d. Virtualization
Answer: b. Archivingdatamation
Which file formats are commonly associated with lossless compression in the cloud?
a. .mp3, .wav
b. .txt, .zip
c. .jpg, .gif
d. .mov, .mp4
Answer: b. .txt, .zipdatamation+1
Cloud storage compression primarily benefits organizations by:
a. Increasing administrative complexity
b. Delaying or eliminating storage hardware expansion
c. Reducing encryption needs
d. Increasing network latency
Answer: b. Delaying or eliminating storage hardware expansiondatamation+1
Lossy compression is generally NOT recommended for:
a. Medical images
b. Audio streaming
c. Video files
d. System backups
Answer: a. Medical imagesijcaonline+1
What is a major challenge when decompressing data in cloud storage?
a. Data can never be restored to original
b. Decompression may be slow if not optimized
c. It reduces data security
d. It prevents audit logging
Answer: b. Decompression may be slow if not optimizedijset+1
Which compression method is ideal for speed in both compression and decompression in cloud environments?
a. JPEG
b. Huffman Coding
c. LZW
d. Run Length Encoding
Answer: c. LZWrjwave+1
Compression is LEAST effective for which of the following?
a. Highly repetitive data
b. Encrypted data
c. Text files
d. Log files
Answer: b. Encrypted databarracuda+1
What is a significant security consideration when using compression in the cloud?
a. Compression reveals file metadata
b. Compression can inadvertently enable known-plaintext attacks
c. Compression prevents deletion
d. Compression eliminates signature checks
Answer: b. Compression can inadvertently enable known-plaintext attacksijeecs.iaescore
What is the effect of compression on data transfer times in cloud environments?
a. No effect
b. Increases transfer times
c. Reduces transfer times due to smaller file size
d. Compresses CPU utilization
Answer: c. Reduces transfer times due to smaller file sizestorware+1
Which of the following is an industry recommendation for format-specific cloud compression?
a. Use AES encryption
b. Always use JPEG for text
c. Use ZIP for general files, and format-specific algorithms for PDFs and images
d. Never use compression for images
Answer: c. Use ZIP for general files, and format-specific algorithms for PDFs and imagesijset
Storage compression in cloud service models is MOST beneficial in:
a. IaaS and SaaS
b. Only PaaS
c. Only private cloud
d. Only hybrid cloud
Answer: a. IaaS and SaaSinterviewbit+1
Compression and deduplication together achieve:
a. Faster file retrieval only
b. Maximum space savings in storage
c. Higher CPU and memory use
d. Slower network performance
Answer: b. Maximum space savings in storagebarracuda+1
Which of the following is a potential drawback of storage compression?
a. Reduced storage efficiency
b. Increased malware risk
c. Processing overhead during compression and decompression
d. Decreased deduplication rate
Answer: c. Processing overhead during compression and decompressionnetzero-events+1
For sensitive documents uploaded to the cloud, which type of compression is preferred?
a. Lossy
b. Lossless
c. No compression
d. Differential compression
Answer: b. Losslessijcaonline+1
What is the recommended approach for compressing large image files in the cloud?
a. Run Length Encoding
b. Huffman Coding
c. JPEG Compression
d. No compression
Answer: c. JPEG Compressionijset
Compression helps cloud backup solutions by:
a. Making recovery impossible
b. Reducing backup duration and space requirements
c. Increasing hardware failures
d. Expanding recovery time
Answer: b. Reducing backup duration and space requirementsmassedcompute+2
Which is true about compression and cloud data integrity?
a. Compression eliminates need for integrity checks
b. Integrity needs to be validated both before and after compression
c. Data integrity is unachievable in compressed files
d. Compression automatically ensures data accuracy
Answer: b. Integrity needs to be validated both before and after compressionijcaonline
In cloud migration projects, why is compression often performed before transfer?
a. To increase file size
b. To reduce migration time and costs
c. To create more redundancy
d. To avoid backup solutions
Answer: b. To reduce migration time and costsmassedcompute+1
Lossy compression removes:
a. Redundant, unnoticeable data
b. All data
c. Compressed files only
d. Encryption keys
Answer: a. Redundant, unnoticeable datascribd+1
The role of deduplication in cloud compression is primarily to:
a. Enhance file encryption
b. Prevent file loss
c. Remove duplicate copies and save space
d. Increase file size
Answer: c. Remove duplicate copies and save spaceijeecs.iaescore
The Lempel-Ziv-77-Huffman (LZ77-HM) technique is used in cloud compression for:
a. Encrypting data
b. Compressing large data with high efficiency
c. Generating hash values
d. Increasing data fragmentation
Answer: b. Compressing large data with high efficiencyijeecs.iaescore
For effective multimedia data compression in the cloud, which algorithm is most appropriate?
a. Huffman Coding
b. JPEG
c. LZW
d. GZIP
Answer: b. JPEGijset
Data compression is key in cloud storage because:
a. It reduces the need for expensive storage expansions
b. It splits files into smaller pieces
c. It improves encryption
d. It increases power consumption
Answer: a. It reduces the need for expensive storage expansionspurestorage+1
What is the major benefit of real-time compression hardware in cloud storage systems?
a. Introduces excessive latency
b. Allows compression/decompression at line speed with minimal impact on performance
c. Limits bandwidth
d. Reduces storage life cycle
Answer: b. Allows compression/decompression at line speed with minimal impact on performancenetzero-events
Which is considered the most effective general-purpose lossless compression method for text in cloud storage?
a. JPEG
b. RAR
c. Huffman Coding
d. MP3
Answer: c. Huffman Codingrjwave+1
In a cloud environment, how can compression contribute to sustainability goals?
a. By increasing energy requirements
b. By reducing physical storage demand and energy use
c. By discarding more data
d. By increasing the number of servers
Answer: b. By reducing physical storage demand and energy usepurestorage+1
What is one limitation of compressing data already in encrypted form in cloud storage?
a. It compresses extremely well
b. It has little to no effect
c. It always increases storage costs
d. It is a security violation
Answer: b. It has little to no effectbarracuda+1
Data compression in cloud storage optimizes:
a. File naming conventions
b. Data access times and transport costs
c. Server cooling costs only
d. User authentication procedures
Answer: b. Data access times and transport costsmassedcompute+2
Which standard practice ensures the best results for cloud-based storage compression?
a. Use only lossless methods regardless of data type
b. Select algorithms based on data type and use-case requirements
c. Avoid compression altogether
d. Double-compress each file
Answer: b. Select algorithms based on data type and use-case requirementsijeecs.iaescore+1

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