Apache HBase Hadoop Mamun Exam 100% Verified
1. Which of the following statements is correct?
A. The result variable will in this case always be null
B. The result variable will not contain any values and can be used to retrieve the column
values
C. The result variable will contain all values from all column families for the row whose
key is 65
D. The result variable will have only values of the first column family from the row whose
key is 65 - ANSWER C
2. Key thing with HBASE? - ANSWER Ans: large, planet size and random access
Q3. Any give region server will hold region(s) of ________ table(s): - ANSWER many
4. sharding - ANSWER horizontal partitioning
5. Is it possible to install HBase on windows? - ANSWER yes, on top of cygwin
Hbase is modeled after - ANSWER Google bigtable
5 characteristics of Hbase - ANSWER Sparse
Sorted
Multidimensional
Distributed
Persistent
, Hbase can be considered a map. True or false - ANSWER True
Hbase map is indexed by 3 things. - ANSWER Row key, column key, time stamp
Each value in the map is an Un-interpreted array of ____ - ANSWER Bytes
Hbase provide high latency random access. True or false - ANSWER False. Low
latency random access
12. format for Hbase data - ANSWER HFile
13. In Hfiles, both keys and values are sorted. T/F - ANSWER True
14. In Hfiles, both keys and value are _______ - ANSWER byte arrays
15. when to create column families? - ANSWER at the time of creating the table
16. how many column families to have? - ANSWER not too many
17. how frequently to change column families? - ANSWER not too frequently
Hbase has joins. True or false - ANSWER False!!
Out of the box, Hbase provides secondary indices. True or false - ANSWER False!
Sharing in Hbase is _______ - ANSWER Automatic
1. Which of the following statements is correct?
A. The result variable will in this case always be null
B. The result variable will not contain any values and can be used to retrieve the column
values
C. The result variable will contain all values from all column families for the row whose
key is 65
D. The result variable will have only values of the first column family from the row whose
key is 65 - ANSWER C
2. Key thing with HBASE? - ANSWER Ans: large, planet size and random access
Q3. Any give region server will hold region(s) of ________ table(s): - ANSWER many
4. sharding - ANSWER horizontal partitioning
5. Is it possible to install HBase on windows? - ANSWER yes, on top of cygwin
Hbase is modeled after - ANSWER Google bigtable
5 characteristics of Hbase - ANSWER Sparse
Sorted
Multidimensional
Distributed
Persistent
, Hbase can be considered a map. True or false - ANSWER True
Hbase map is indexed by 3 things. - ANSWER Row key, column key, time stamp
Each value in the map is an Un-interpreted array of ____ - ANSWER Bytes
Hbase provide high latency random access. True or false - ANSWER False. Low
latency random access
12. format for Hbase data - ANSWER HFile
13. In Hfiles, both keys and values are sorted. T/F - ANSWER True
14. In Hfiles, both keys and value are _______ - ANSWER byte arrays
15. when to create column families? - ANSWER at the time of creating the table
16. how many column families to have? - ANSWER not too many
17. how frequently to change column families? - ANSWER not too frequently
Hbase has joins. True or false - ANSWER False!!
Out of the box, Hbase provides secondary indices. True or false - ANSWER False!
Sharing in Hbase is _______ - ANSWER Automatic
