- HBase - Home
- HBase - Overview
- HBase - Architecture
- HBase - Installation
- HBase - Shell
- HBase - General Commands
- HBase - Admin API
- HBase - Create Table
- HBase - Listing Table
- HBase - Disabling a Table
- HBase - Enabling a Table
- HBase - Describe & Alter
- HBase - Exists
- HBase - Drop a Table
- HBase - Shutting Down
- HBase - Client API
- HBase - Create Data
- HBase - Update Data
- HBase - Read Data
- HBase - Delete Data
- HBase - Scan
- HBase - Count & Truncate
- HBase - Security
HBase Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to HBase. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - To locate a piece of data Hbase uses coordinates. A coordinate is made-up of
A - rowId, table name, block address
B - rowid, table name, column name
Answer : C
Explanation
Rowkey ,table name and column name create a unique combination which can identify a piece of data in Hbase.
Q 2 - The addFamily() command is used for
A - Displaying all columns of a specific column family
B - Add new column family to the table
Answer : A
Explanation
The addFamily() command displays all the columns of a specific column family.
Q 3 - Retrieving a batch of rows in every RPC call made by an API to a HBase database is called a
Answer : B
Explanation
When a group of records is returned from HBASE database by an API making a RPC call the process is called a scan. The number of rows to be returned by configuring the caching property.
Q 4 - When a region becomes bigger in size, it
Answer : D
Explanation
The region gets split into small regions when it grows bigger in size.
Q 5 - In a reduce-side join the Mapreduce step which is used to collocate the relevant records form the two joining data sets is
Answer : C
Explanation
A reduce-side join takes advantage of the intermediate Shuffle Step to collocate relevant records from the two sets.
Q 6 - The tuple which specifies a cell in Hbase is
Answer : A
Explanation
The tuple row, column and version defines a cell. Here row indicates the rowkey.
Q 7 - Hbase can automatically delete rows by using
Answer : C
Explanation
Using TTL Hbase will delte all the rows that has reached the expiration time.
Q 8 - The type of coprocessors which are similar to the stored procedures in relational database is
Answer : D
Explanation
The Endpoint type of coprocessor is similar to the data abse store dprocedure in relational systems.
Q 9 - The Hbase column qualifier in a column can be
B - Written to and read form when omitted
Answer : D
Explanation
The column qualifier can be left empty and still written to and read from. ALos it can not be renamed after it is created
Q 10 - The Hbase master node orchestrates
Answer : D
Explanation
The Regionservers slaves are managed by the Hbase Master node