MCQs

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Overall MCQs for Reference

1. Which type of database is HBase?
   a. Relational
   b. Graph
   c. Column-oriented
   d. Object-oriented
   Answer: c. Column-orientedibm+2​
2. On which storage system does HBase rely?
   a. Local Disk
   b. HDFS
   c. NFS
   d. SAN
   Answer: b. HDFSsaigeetha+2​
3. Which process in HBase splits tables into regions?
   a. Data Partitioning
   b. Auto Sharding
   c. Cloning
   d. Mirroring
   Answer: b. Auto Shardingupgrad+2​
4. What is a Region Server responsible for in HBase?
   a. Assigning regions
   b. Managing table permissions
   c. Storing and serving regions
   d. Monitoring logs
   Answer: c. Storing and serving regionspvpsiddhartha+2​
5. Which component coordinates HBase cluster operations?
   a. Region Server
   b. ZooKeeper
   c. HDFS
   d. HMaster
   Answer: b. ZooKeeperedureka+2​
6. What kind of scalability does HBase provide?
   a. Vertical scalability only
   b. Linear and modular scalability
   c. Limited scalability
   d. None
   Answer: b. Linear and modular scalabilitygeeksforgeeks+2​
7. How does HBase ensure fault tolerance?
   a. Mirroring data
   b. RAID systems
   c. Data replication
   d. Compression
   Answer: c. Data replicationplacementpreparation+1​
8. What is MemStore in HBase?
   a. Disk storage
   b. Cache for writes
   c. Read buffer
   d. Index store
   Answer: b. Cache for writesupgrad+1​
9. Which log mechanism ensures data durability in HBase?
   a. Binary Log
   b. Write-Ahead Log (WAL)
   c. Transaction Log
   d. Redo Log
   Answer: b. Write-Ahead Log (WAL)acte+2​
10. Which of the following companies uses HBase for real-time storage?
    a. Google
    b. Facebook
    c. IBM
    d. Oracle
    Answer: b. Facebookdata-flair+1​
11. What is the default block size in HBase?
    a. 16 MB
    b. 32 MB
    c. 64 MB
    d. 128 MB
    Answer: c. 64 MBjavaguides​
12. Which command disables a table in HBase before deletion?
    a. STOP TABLE
    b. DISABLE TABLE
    c. DELETE TABLE
    d. REMOVE TABLE
    Answer: b. DISABLE TABLEtutorialspoint+1​
13. Which use-case best suits HBase’s real-time capabilities?
    a. Static reporting
    b. Time-series data retrieval
    c. Archival storage
    d. Batch processing
    Answer: b. Time-series data retrievaldocs-archive.cloudera+1​
14. What is a column family in HBase?
    a. Table row
    b. Set of columns stored together
    c. Database schema
    d. Index key
    Answer: b. Set of columns stored togethersaigeetha+2​
15. HBase supports integration with which Hadoop ecosystem tool for analytics?
    a. Pig
    b. Spark
    c. Hive
    d. All of the above
    Answer: d. All of the abovetestbook+2​
16. What is the role of HMaster in HBase?
    a. Data retrieval
    b. Table creation only
    c. Assigning and managing regions
    d. Logging transactions
    Answer: c. Assigning and managing regionspvpsiddhartha+2​
17. Which type of access does HBase excel at?
    a. Sequential
    b. Random access
    c. Block access
    d. Transactional
    Answer: b. Random accesstutorialspoint+1​
18. How does HBase maintain data versioning?
    a. Serial numbers
    b. Timestamps
    c. Hash keys
    d. Counters
    Answer: b. Timestampsacte+1​
19. Which analytical operation is effective to run on HBase tables?
    a. MapReduce jobs
    b. SQL scripts
    c. PL/SQL programs
    d. Python scripts only
    Answer: a. MapReduce jobstestbook+1​
20. HBase is most suitable for which data size?
    a. Small datasets
    b. Medium datasets
    c. Large-scale datasets
    d. Temporary datasets
    Answer: c. Large-scale datasetsgeeksforgeeks+2​
21. Which industry uses HBase to store genome sequences?
    a. Finance
    b. Healthcare
    c. Oil and gas
    d. Retail
    Answer: b. Healthcaredata-flair​
22. What enables efficient distribution of data in HBase?
    a. Locking
    b. Region splitting
    c. Serializing
    d. Transaction logging
    Answer: b. Region splittingedureka+2​
23. What format can HBase cell values be stored in?
    a. JSON only
    b. Binary, Avro, ORC
    c. XML only
    d. CSV only
    Answer: b. Binary, Avro, ORCfreshersnow​
24. Why is HBase considered fault-tolerant?
    a. No downtime
    b. Replicates data across nodes
    c. Provides automatic backups
    d. Uses hardware RAID
    Answer: b. Replicates data across nodesplacementpreparation+1​
25. Which is NOT a type of column delete in HBase?
    a. Delete specific version
    b. Delete all versions
    c. Delete row key
    d. Delete column family
    Answer: c. Delete row keytutorialspoint​
26. Which class provides access to HBase in Java?
    a. HBaseAccess
    b. HTable
    c. BaseTable
    d. JTable
    Answer: b. HTablepvpsiddhartha+1​
27. What mechanism allows HBase to handle real-time data access?
    a. Off-line sync
    b. Multi-layered caching
    c. Batch queries
    d. Data streaming
    Answer: b. Multi-layered cachingupgrad+1​
28. The root of HBase tables is called?
    a. Table root
    b. Region root
    c. Row key
    d. Master key
    Answer: c. Row keysaigeetha+1​
29. Which storage is flushed when MemStore reaches a threshold?
    a. HFile
    b. Log file
    c. Data file
    d. MapFile
    Answer: a. HFileedureka+1​
30. Which service monitors health and coordination in HBase?
    a. Region Server
    b. ZooKeeper
    c. HDFS NameNode
    d. HBase Gateway
    Answer: b. ZooKeeperupgrad+1​
31. HBase can be used to serve models in which application?
    a. Spreadsheet computations
    b. Fraud detection systems
    c. Word processors
    d. Static websites
    Answer: b. Fraud detection systemsdocs-archive.cloudera+1​
32. How does HBase store sparse datasets efficiently?
    a. Column-wise storage
    b. Row-based storage
    c. Block formatting
    d. Key-value records
    Answer: a. Column-wise storageibm+2​
33. Which application uses HBase for customer 360 analytics?
    a. Telecom apps
    b. Web/mobile apps
    c. Embedded systems
    d. Word processing
    Answer: b. Web/mobile appsdocs-archive.cloudera​
34. Which type of querying does HBase NOT support natively?
    a. SQL
    b. Point queries
    c. Scan queries
    d. Batch queries
    Answer: a. SQLibm+1​
35. What happens when an HBase table becomes too large?
    a. Data loss occurs
    b. Sharded automatically
    c. Stopped by admin
    d. Optimized only
    Answer: b. Sharded automaticallygeeksforgeeks+2​
36. Which is a NOT HBase application in the real world?
    a. Storing advertisement selections
    b. Storing genome data
    c. Managing relational transactions
    d. Recording sports analytics
    Answer: c. Managing relational transactionsdata-flair+1​
37. What does HBase integrate with for Big Data processing?
    a. MySQL
    b. MapReduce
    c. Oracle DB
    d. Redis
    Answer: b. MapReduceengineering.sift+2​
38. Which protocol does HBase use for client communication?
    a. File protocol
    b. Thrift
    c. HTTP
    d. UDP
    Answer: b. Thriftpvpsiddhartha+1​
39. Which format is optimal for analytics with HBase?
    a. Flat files
    b. Columnar storage
    c. Linked lists
    d. Table arrays
    Answer: b. Columnar storagealooba+2​
40. What advantage does HBase offer for machine learning feature engineering?
    a. Built-in model training
    b. Efficient time series scans
    c. Instant deep learning models
    d. No feature engineering support
    Answer: b. Efficient time series scansengineering.sift+1​
41. Which system uses HBase for real-time recommendations?
    a. Spotify
    b. LinkedIn
    c. Amazon
    d. Twitter
    Answer: a. Spotifyupgrad​
42. Which is NOT a core component of HBase architecture?
    a. HMaster
    b. Region Server
    c. ZooKeeper
    d. DataNode
    Answer: d. DataNodeedureka+1​
43. Which action is required before dropping an HBase table?
    a. Disabling the table
    b. Compressing the data
    c. Backing up the table
    d. Indexing the table
    Answer: a. Disabling the tablejavaguides+1​
44. HBase can be used for which type of ML infrastructure operations?
    a. Streaming only
    b. Batch and real-time
    c. Offline storage only
    d. Weekly reporting
    Answer: b. Batch and real-timeacte+1​
45. What is the best feature of HBase for operational AI/ML?
    a. High latency operations
    b. Low-latency, high-throughput access
    c. Slow data retrieval
    d. Sequential processing
    Answer: b. Low-latency, high-throughput accessdocs-archive.cloudera+1​
46. What does the ZooKeeper component ensure in HBase?
    a. Data compression
    b. Cluster coordination and health
    c. Transaction logging
    d. Row key sorting
    Answer: b. Cluster coordination and healthedureka+1​
47. How does HBase support historical analysis?
    a. By archiving data
    b. Data versioning via timestamps
    c. Creating backups
    d. Exporting files
    Answer: b. Data versioning via timestampsacte+1​
48. Which company uses HBase to store crash data?
    a. Google
    b. Mozilla
    c. Facebook
    d. Microsoft
    Answer: b. Mozilladata-flair​
49. Which delete type removes all versions in a column family?
    a. Delete row
    b. Delete column
    c. Delete family
    d. Delete field
    Answer: c. Delete familytutorialspoint​
50. What describes HBase’s read mechanism for new and old data?
    a. Single memory reads
    b. Block cache, MemStore and HFile checks
    c. Flat file scanning
    d. In-memory only
    Answer: b. Block cache, MemStore and HFile checksupgrad+1​

1. https://www.ibm.com/think/topics/hbase
2. https://www.edureka.co/blog/hbase-architecture/
3. https://www.geeksforgeeks.org/dbms/architecture-of-hbase/
4. https://www.saigeetha.in/post/hbase-fundamentals
5. https://testbook.com/objective-questions/mcq-on-big-data–5eea6a0939140f30f369dabe
6. https://www.upgrad.com/blog/hbase-architecture/
7. https://www.pvpsiddhartha.ac.in/dep_it/lecture%20notes/Big%20Data%20Analytics/BDA%20UNIT%205.pdf
8. https://www.placementpreparation.io/mcq/hadoop/page/4/
9. https://www.acte.in/apache-hbase-guide
10. https://data-flair.training/blogs/hbase-use-cases/
11. https://www.bmc.com/blogs/hadoop-hbase/
12. https://www.javaguides.net/2024/08/hadoop-hbase-quiz-mcq.html
13. https://www.tutorialspoint.com/hbase/hbase_online_quiz.htm
14. https://docs-archive.cloudera.com/runtime/7.2.1/hbase-overview/topics/hbase-use-cases.html
15. https://engineering.sift.com/running-ml-infrastructure-on-hbase/
16. https://www.tutorialspoint.com/hbase/hbase_overview.htm
17. https://www.freshersnow.com/hbase-quiz/
18. https://www.alooba.com/skills/tools/database-and-storage-systems/relational-databases/hbase/
19. https://www.geeksforgeeks.org/cloud-computing/hbase-model-in-hadoop/
20. https://data-flair.training/blogs/online-hbase-quiz/