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HBase MCQs and Answers With Explanation – This article is about HBase Online Quiz. The HBase Quiz Questions & Answers cover various aspects of HBase, including its architecture, data modeling, query language, and administration, among others. Whether you’re a database administrator or a developer, HBase MCQs can help you deepen your understanding of this powerful database system.
HBase MCQs
However, before knowing the Top 60 HBase Multiple Choice Questions kindly do know the concept of HBase. HBase is an open-source, distributed, non-relational database management system built on top of the Hadoop Distributed File System (HDFS). It is designed to handle large amounts of structured and semi-structured data and is widely used by companies for real-time access and analysis of data. HBase offers features such as automatic sharding, fault tolerance, and high availability, among others. To help individuals learn more about HBase, a set of HBase Quiz Questions & Answers can be a valuable resource to assess their understanding of the database management system.
HBase Multiple Choice Questions and Answers
| Name | HBase |
| Exam Type | MCQ (Multiple Choice Questions) |
| Category | Technical Quiz |
| Mode of Quiz | Online |
Top 60 HBase MCQs with Answers | Practice Online Quiz
1. What is HBase?
A) A distributed database that supports structured data storage for large tables.
B) A distributed file system.
C) A document-oriented database.
D) A key-value database.
Answer: A) A distributed database that supports structured data storage for large tables.
Explanation: HBase is a distributed database that is designed to store structured data in large tables. It is based on Apache Hadoop and is built for scalability and fault tolerance.
2. What is the maximum size of an HBase rowkey?
A) 64 KB
B) 128 MB
C) 1 GB
D) Unlimited
Answer: D) Unlimited
Explanation: There is no maximum size limit for an HBase rowkey. However, it is recommended to keep the rowkey size small for better performance.
3. What is the purpose of the HBase shell?
A) To administer HBase clusters
B) To perform queries on HBase tables
C) To manage HBase table metadata
D) All of the above
Answer: D) All of the above
Explanation: The HBase shell is a command-line interface that can be used to administer HBase clusters, perform queries on HBase tables, and manage HBase table metadata.
4. Which of the following is NOT a component of an HBase cluster?
A) HBase RegionServer
B) HBase Master
C) Hadoop NameNode
D) Hadoop DataNode
Answer: D) Hadoop DataNode
Explanation: Hadoop DataNode is not a component of an HBase cluster. HBase cluster consists of HBase RegionServer, HBase Master, and Hadoop NameNode.
5. Which of the following is the HBase storage unit?
A) Table
B) Row
C) Column family
D) Cell
Answer: D) Cell
Explanation: The HBase storage unit is a cell, which is the intersection of a row and a column in an HBase table.
6. What is the HBase data model?
A) Key-value
B) Document
C) Column-family
D) Relational
Answer: C) Column-family
Explanation: The HBase data model is based on the column-family data model, which means that data is stored in column families instead of tables.
7. Which of the following is NOT a type of HBase filter?
A) ColumnFilter
B) KeyOnlyFilter
C) BitwiseComparator
D) DateFilter
Answer: D) DateFilter
Explanation: DateFilter is not a type of HBase filter. HBase filters include ColumnFilter, KeyOnlyFilter, and BitwiseComparator, among others.
8. What is the HBase block cache?
A) A cache of HBase table data in memory
B) A cache of HBase table data on disk
C) A cache of Hadoop NameNode metadata
D) A cache of Hadoop DataNode blocks
Answer: A) A cache of HBase table data in memory
Explanation: The HBase block cache is a cache of HBase table data that is stored in memory to improve query performance.
9. What is the purpose of the HBase compaction process?
A) To reduce the number of HBase table regions
B) To reduce the size of HBase table data
C) To improve query performance on HBase tables
D) All of the above
Answer: B) To reduce the size of HBase table data
Explanation: The HBase compaction process is used to reduce the size of HBase table data by removing duplicate and expired data.
10. What is an HBase coprocessor?
A) A custom code that can be executed on an HBase RegionServer
B) A module that handles HBase table replication
C) A process that monitors HBase table data changes
D) A component that manages HBase table permissions
Answer: A) A custom code that can be executed on an HBase RegionServer
Explanation: An HBase coprocessor is custom code that can be executed on an HBase RegionServer to perform additional processing or provide additional functionality.
11. What is an HBase snapshot?
A) A copy of an HBase table at a particular point in time
B) A backup of an HBase cluster
C) A secondary HBase cluster used for disaster recovery
D) None of the above
Answer: A) A copy of an HBase table at a particular point in time
Explanation: An HBase snapshot is a read-only copy of an HBase table at a particular point in time. It can be used for backup or for creating a clone of a table.
12. Which of the following is NOT a type of HBase replication?
A) Unidirectional
B) Bidirectional
C) Multi-master
D) Cascading
Answer: B) Bidirectional
Explanation: Bidirectional replication is not a type of HBase replication. HBase replication can be unidirectional, multi-master, or cascading.
13. What is an HBase co-processor endpoint?
A) A way to expose custom functionality through an HBase coprocessor
B) A component that manages HBase table metadata
C) A process that monitors HBase table data changes
D) None of the above
Answer: A) A way to expose custom functionality through an HBase coprocessor
Explanation: An HBase co-processor endpoint is a way to expose custom functionality through an HBase coprocessor. It allows external clients to invoke coprocessor methods.
14. What is the HBase split process?
A) A process that splits HBase table data into multiple regions
B) A process that merges HBase table data from multiple regions
C) A process that compresses HBase table data
D) A process that encrypts HBase table data
Answer: A) A process that splits HBase table data into multiple regions
Explanation: The HBase split process is used to split HBase table data into multiple regions to improve scalability and performance.
15. Which of the following is an HBase API?
A) Java API
B) REST API
C) Thrift API
D) All of the above
Answer: D) All of the above
Explanation: HBase provides Java API, REST API, and Thrift API for accessing and manipulating HBase data.
16. What is an HBase namespace?
A) A logical grouping of HBase tables
B) A physical grouping of HBase RegionServers
C) A set of HBase table permissions
D) None of the above
Answer: A) A logical grouping of HBase tables
Explanation: An HBase namespace is a logical grouping of HBase tables that allows for better organization and management of tables.
17. What is an HBase compaction algorithm?
A) A method used to compact HBase table data
B) A method used to compress HBase table data
C) A method used to encrypt HBase table data
D) A method used to shard HBase table data
Answer: A) A method used to compact HBase table data
Explanation: An HBase compaction algorithm is a method used to compact HBase table data by removing duplicate and expired data.
18. What is an HBase filter list?
A) A list of HBase filters that can be applied to HBase table scans
B) A list of HBase coprocessors that can be executed
C) A list of HBase table permissions
D) A list of HBase table snapshots
Answer: A) A list of HBase filters that can be applied to HBase table scans
Explanation: An HBase filter list is a list of HBase filters that can be applied to HBase table scans to filter out unwanted data.
19. Which of the following is NOT an HBase filter type?
A) ColumnPrefixFilter
B) TimestampFilter
C) RegexFilter
D) SecurityFilter
Answer: D) SecurityFilter
Explanation: SecurityFilter is not an HBase filter type. HBase filter types include ColumnPrefixFilter, TimestampFilter, and RegexFilter, among others.
20. What is an HBase row key?
A) The unique identifier of an HBase table row
B) The name of an HBase table column
C) A type of HBase filter
D) None of the above
Answer: A) The unique identifier of an HBase table row
Explanation: An HBase row key is the unique identifier of an HBase table row. It is used to partition data across HBase RegionServers and to retrieve data efficiently.
21. What is an HBase table schema?
A) The structure of an HBase table, including column families and column qualifiers
B) The physical location of an HBase table in the HDFS
C) The set of HBase table permissions
D) None of the above
Answer: A) The structure of an HBase table, including column families and column qualifiers
Explanation: An HBase table schema defines the structure of an HBase table, including column families and column qualifiers.
22. What is an HBase row lock?
A) A mechanism used to prevent concurrent updates to the same HBase table row
B) A mechanism used to encrypt HBase table data
C) A mechanism used to compress HBase table data
D) None of the above
Answer: A) A mechanism used to prevent concurrent updates to the same HBase table row
Explanation: An HBase row lock is a mechanism used to prevent concurrent updates to the same HBase table row to ensure data consistency.
23. Which of the following is NOT an HBase shell command?
A) create
B) modify
C) put
D) copy
Answer: D) copy
Explanation: copy is not an HBase shell command. HBase shell commands include create, modify, and put, among others.
24. What is an HBase cell?
A) A unit of data in an HBase table, consisting of a row key, column family, column qualifier, and value
B) A physical location of an HBase RegionServer
C) A type of HBase filter
D) None of the above
Answer: A) A unit of data in an HBase table, consisting of a row key, column family, column qualifier, and value
Explanation: An HBase cell is a unit of data in an HBase table, consisting of a row key, column family, column qualifier, and value.
25. Which of the following is an HBase command line tool?
A) hbck
B) HBase Shell
C) HBase Thrift Gateway
D) All of the above
Answer: D) All of the above
Explanation: HBase provides several command line tools, including hbck, HBase Shell, and HBase Thrift Gateway.
26. What is an HBase RegionServer?
A) A server that hosts a region of an HBase table
B) A server that manages HBase table metadata
C) A server that manages HBase table permissions
D) None of the above
Answer: A) A server that hosts a region of an HBase table
Explanation: An HBase RegionServer is a server that hosts a region of an HBase table. HBase table data is partitioned across multiple RegionServers to enable efficient data storage and retrieval.
27. Which of the following is an HBase client API?
A) Java API
B) REST API
C) Thrift API
D) All of the above
Answer: D) All of the above
Explanation: HBase provides several client APIs, including Java API, REST API, and Thrift API.
28. What is an HBase table split?
A) The process of dividing an HBase table into multiple regions
B) The process of merging multiple HBase tables into a single table
C) The process of compressing HBase table data
D) None of the above
Answer: A) The process of dividing an HBase table into multiple regions
Explanation: An HBase table split is the process of dividing an HBase table into multiple regions to enable efficient data storage and retrieval.
29. What is an HBase table region?
A) A portion of an HBase table that is hosted by an HBase RegionServer
B) A type of HBase filter
C) A set of HBase table permissions
D) None of the above
Answer: A) A portion of an HBase table that is hosted by an HBase RegionServer
Explanation: An HBase table region is a portion of an HBase table that is hosted by an HBase RegionServer.
30. Which of the following is an HBase data model element?
A) Column family
B) Row key
C) Cell
D) All of the above
Answer: D) All of the above
Explanation: HBase data model elements include column families, row keys, and cells.
31. Which of the following is an HBase client?
A) HBase Shell
B) HBase RegionServer
C) HBase Master
D) None of the above
Answer: A) HBase Shell
Explanation: HBase Shell is an HBase client that allows users to interact with an HBase cluster through a command line interface.
32. What is an HBase column family?
A) A grouping of HBase table columns
B) A physical location of an HBase RegionServer
C) A type of HBase filter
D) None of the above
Answer: A) A grouping of HBase table columns
Explanation: An HBase column family is a grouping of HBase table columns. All columns in an HBase table must belong to a column family.
33. What is an HBase mutation?
A) A change to an HBase table cell value
B) A change to an HBase table row key
C) A change to an HBase table schema
D) None of the above
Answer: A) A change to an HBase table cell value
Explanation: An HBase mutation is a change to an HBase table cell value.
34. Which of the following is an HBase storage format?
A) HBase Binary
B) Apache Avro
C) Apache ORC
D) All of the above
Answer: D) All of the above
Explanation: HBase supports several storage formats, including HBase Binary, Apache Avro, and Apache ORC with an HBase table cell value. It is used to track changes to the cell over time.
35. Which of the following is an HBase cluster management tool?
A) Apache Flume
B) Apache Pig
C) Apache Ambari
D) None of the above
Answer: C) Apache Ambari
Explanation: Apache Ambari is an open-source tool for managing and monitoring Hadoop clusters, including HBase clusters.
36. What is an HBase client filter?
A) A mechanism for restricting the amount of data returned by an HBase query
B) A type of HBase server
C) A type of HBase region
D) None of the above
Answer: A) A mechanism for restricting the amount of data returned by an HBase query
Explanation: An HBase client filter is a mechanism for restricting the amount of data returned by an HBase query. Filters can be applied at the row, column, or cell level.
37. What is an HBase scanner?
A) An HBase client tool for iterating over a set of rows in an HBase table
B) An HBase server component for hosting HBase table regions
C) An HBase tool for performing backups and restores
D) None of the above
Answer: A) An HBase client tool for iterating over a set of rows in an HBase table
Explanation: An HBase scanner is an HBase client tool for iterating over a set of rows in an HBase table.
38. What is an HBase bulk load?
A) A mechanism for loading data into an HBase table from an external source
B) A mechanism for deleting data from an HBase table
C) A type of HBase filter
D) None of the above
Answer: A) A mechanism for loading data into an HBase table from an external source
Explanation: An HBase bulk load is a mechanism for loading data into an HBase table from an external source, such as Hadoop Distributed File System (HDFS).
39. Which of the following is an HBase data storage component?
A) HBase RegionServer
B) HBase Master
C) HBase ZooKeeper
D) HBase HFile
Answer: D) HBase HFile
Explanation: HBase HFile is an HBase data storage component used to store HBase table data.
40. Which of the following is an HBase backup tool?
A) Apache Pig
B) Apache Hadoop DistCp
C) Apache Flume
D) Apache HBase Backup
Answer: D) Apache HBase Backup
Explanation: Apache HBase Backup is an open-source backup tool for HBase.
41. Which of the following is an HBase shell command for scanning an HBase table?
A) put
B) get
C) scan
D) delete
Answer: C) scan
Explanation: The “scan” command is an HBase shell command for scanning an HBase table.
42. Which of the following is an HBase write-ahead log (WAL) storage component?
A) HBase HRegion
B) HBase HFile
C) HBase MemStore
D) HBase WAL
Answer: D) HBase WAL
Explanation: HBase WAL is an HBase write-ahead log storage component.
43. What is an HBase filter?
A) A mechanism for restricting the amount of data returned by an HBase query
B) An HBase server component for hosting HBase table regions
C) An HBase client tool for interacting with an HBase table
D) None of the above
Answer: A) A mechanism for restricting the amount of data returned by an HBase query
Explanation: An HBase filter is a mechanism for restricting the amount of data returned by an HBase query.
44. Which of the following is an HBase server component responsible for hosting HBase table regions?
A) HBase HRegionServer
B) HBase HMaster
C) HBase ZooKeeper
D) None of the above
Answer: A) HBase HRegionServer
Explanation: HBase HRegionServer is an HBase server component responsible for hosting HBase table regions.
45. What is an HBase table descriptor?
A) A description of an HBase table’s structure and configuration
B) An HBase server component for hosting HBase table regions
C) An HBase client tool for interacting with an HBase table
D) None of the above
Answer: A) A description of an HBase table’s structure and configuration
Explanation: An HBase table descriptor is a description of an HBase table’s structure and configuration.
46. Which of the following is an HBase backup and recovery tool?
A) Apache Flume
B) Apache Hadoop DistCp
C) Apache Pig
D) Apache HBase Backup
Answer: D) Apache HBase Backup
Explanation: Apache HBase Backup is an HBase backup and recovery tool.
47. Which of the following is an HBase Java API class for managing HBase table metadata?
A) HBaseAdmin
B) HTableDescriptor
C) HTable
D) None of the above
Answer: B) HTableDescriptor
Explanation: HTableDescriptor is an HBase Java API class for managing HBase table metadata.
48. Which of the following is an HBase Java API class for managing HBase table data?
A) HBaseAdmin
B) HTableDescriptor
C) HTable
D) None of the above
Answer: C) HTable
Explanation: HTable is an HBase Java API class for managing HBase table data.
49. Which of the following is an HBase Java API class for creating and modifying HBase table data?
A) Put
B) Get
C) Delete
D) None of the above
Answer: A) Put
Explanation: Put is an HBase Java API class for creating and modifying HBase table data.
50. Which of the following is an HBase Java API class for retrieving HBase table data?
A) Put
B) Get
C) Delete
D) None of the above
Answer: B) Get
Explanation: Get is an HBase Java API class for retrieving HBase table data.
51. What is an HBase write buffer?
A) A buffer for storing HBase table cell values
B) A buffer for storing HBase table row keys
C) A buffer for storing HBase table column families
D) None of the above
Answer: A) A buffer for storing HBase table cell values
Explanation: An HBase write buffer is a buffer for storing HBase table cell values.
52. Which of the following is an HBase Java API class for deleting HBase table data?
A) Put
B) Get
C) Delete
D) None of the above
Answer: C) Delete
Explanation: Delete is an HBase Java API class for deleting HBase table data.
53. What is an HBase split?
A) A partitioning of an HBase table region
B) An HBase server component for hosting HBase table regions
C) An HBase client tool for interacting with an HBase table
D) None of the above
Answer: A) A partitioning of an HBase table region
Explanation: An HBase split is a partitioning of an HBase table region.
54. Which of the following is an HBase Java API class for managing HBase table administration tasks?
A) HBaseAdmin
B) HTableDescriptor
C) HTable
D) None of the above
Answer: A) HBaseAdmin
Explanation: HBaseAdmin is an HBase Java API class for managing HBase table administration tasks.
55. Which of the following is an HBase tool for importing data into HBase?
A) Apache Flume
B) Apache Hadoop DistCp
C) Apache Pig
D) Apache HBase Import
Answer: D) Apache HBase Import
Explanation: Apache HBase Import is an HBase tool for importing data into HBase.
56. Which of the following is an HBase tool for exporting data from HBase?
A) Apache Flume
B) Apache Hadoop DistCp
C) Apache Pig
D) Apache HBase Export
Answer: D) Apache HBase Export
Explanation: Apache HBase Export is an HBase tool for exporting data from HBase.
57. What is an HBase scan?
A) An HBase operation for retrieving a range of rows from an HBase table
B) An HBase operation for retrieving a single row from an HBase table
C) An HBase operation for modifying a range of rows in an HBase table
D) None of the above
Answer: A) An HBase operation for retrieving a range of rows from an HBase table
Explanation: An HBase scan is an HBase operation for retrieving a range of rows from an HBase table.
58. Which of the following is an HBase tool for bulk loading data into HBase?
A) Apache Flume
B) Apache Hadoop DistCp
C) Apache Pig
D) Apache HBase Bulk Load
Answer: D) Apache HBase Bulk Load
Explanation: Apache HBase Bulk Load is an HBase tool for bulk loading data into HBase.
59. Which of the following is an HBase tool for compacting HBase table data?
A) Apache Flume
B) Apache Hadoop DistCp
C) Apache Pig
D) Apache HBase Compact
Answer: D) Apache HBase Compact
Explanation: Apache HBase Compact is an HBase tool for compacting HBase table data.
60. What is an HBase region server?
A) An HBase server component for hosting HBase table regions
B) An HBase client tool for interacting with an HBase table
C) An extension point for custom HBase table processing logic
D) None of the above
Answer: A) An HBase server component for hosting HBase table regions
Explanation: An HBase region server is an HBase server component for hosting HBase table regions.
HBase MCQs can be a useful resource for individuals looking to improve their knowledge and understanding of the HBase database management system. By testing their knowledge of HBase through HBase MCQs with Answers, individuals can identify areas where they need to improve and gain confidence in using this powerful tool for real-time data processing and analysis. For more technical quizzes kindly keep following our Freshersnow website.