Quiz : Hadoop
Mastering Hadoop: Test Your Knowledge
Welcome to the "Mastering Hadoop" quiz! This engaging quiz consists of 10 thought-provoking questions designed to test your understanding of Hadoop, HDFS, Hive, and Hbase. Whether you are a beginner or an experienced user, this quiz will challenge your knowledge and help you learn more.
Prepare yourself with questions about:
- Hadoop architecture
- HDFS operations
- Hive constraints
- MapReduce job features
1. In Hbase a table can be-
Dropped directly
Dropped after disabling
Only disabled, not dropped
Only compressed, not dropped
2.By default when a database is dropped in Hive-
He tables are also deleted
The directory is deleted if there are no tables
The hdfs blocks are formatted
None
3.Which of the following feature overcomes this single point of failure?
HDFS federation
HDFS NameNode High Availability
Erasure coding
All of the above
4.Which of the following is used to adjust the size of distributed cache?
Hdfs.cache.size
Hdfs.cache.size
Mapred.cache.size
Distributedcache.size
5.Which of the following feature you will use submit jars, static files for MapReduce job during runtime?
Distributed cache
Speculative execution
Data locality
Erasure coding
6.For reading/writing data to/from HDFS, clients first connect to-
NameNode
DataNode
Secondary NameNode
None of the above
7.Which of the following stores metadata?
NameNode
DataNode
Secondary NameNode
None of the above
8. Which kind of keys(CONSTRAINTS) Hive can have?
Primary Keys
Foreign Keys
Unique Keys
None
9.HDFS performs replication, although it results in data redundancy?
True
False
10.The following is not permitted on HDFS files-
Deleting
Renaming
Moving
Executing
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