HBase Quiz 4 | Englishfreetest.com

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  • Test content
    Question 1: While reading data from Hbase the command used to get only a specific column instead of all the columns in a column family is
    A. Onecolumn
    B. Addcolumn
    C. FilterCOlumn
    D. Dropcolumns
    Question 2: Hbase can store
    A. Structured data
    B. Unstructured data
    C. Semi structured data
    D. All of the above
    Question 3: The data in a cell in Hbase table is identified using the four coordinates. Three of which are − rowkey,column family and column qualifier. The fourth coordinate used to identify each value in a cell is
    A. Sequence number
    B. Version number
    C. Serial number
    D. table name
    Question 4: When a compaction operates over all HFiles in a column family in a given region, it is called
    A. Major compaction
    B. Family compaction
    C. Final compaction
    D. Full Compaction
    Question 5: Which of the following is declared during the schema definition creation?
    A. Column families
    B. Column names
    C. Both
    D. None
    Question 6: The table descriptor can be used only for which type of coprocessors?
    A. Region-related
    B. Master–related
    C. WAL-related
    D. Column Family related
    Question 7: The method which deletes a specific version within a cell is
    A. Deletecolumns()
    B. Deletecolumn()
    C. Deleteversionno()
    D. Deletespecific()
    Question 8: The Hbase block size and the HDFS block size
    A. Are not related
    B. Hbase is twice the size of HDFS
    C. Habse is half the size of HDFS
    D. Are of same size
    Question 9: 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
    C. rowkey, table name, column name
    D. rowkey, table name, block address
    Question 10: There are 2 programs which confirm a write into Hbase. One is write-ahead log(WAL) and the other one is
    A. Mem confirm log
    B. Write complete log
    C. log store
    D. Memstore