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Hadoop interview questions part 12
Hadoop interview questions part 12
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Total Questions: 20
1. __________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer
A. Partitioner
B. OutputCollector
C. Reporter
D. All of the mentioned
Show Correct Answer
Correct Answer is :
OutputCollector
2. _________ is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution.
A. Map Parameters
B. JobConf
C. MemoryConf
D. None of the mentioned
Show Correct Answer
Correct Answer is :
JobConf
3. ________ systems are scale-out file-based (HDD) systems moving to more uses of memory in the nodes.
A. NoSQL
B. NewSQL
C. SQL
D. All of the mentioned
Show Correct Answer
Correct Answer is :
NoSQL
4. Point out the correct statement :
A. Hadoop is ideal for the analytical, post-operational, data-warehouse-ish type of workload
B. HDFS runs on a small cluster of commodity-class nodes
C. NEWSQL is frequently the collection point for big data
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Hadoop is ideal for the analytical, post-operational, data-warehouse-ish type of workload
5. Hadoop data is not sequenced and is in 64MB to 256MB block sizes of delimited record values with schema applied on read based on:
A. HCatalog
B. Hive
C. Hbase
D. All of the mentioned
Show Correct Answer
Correct Answer is :
HCatalog
6. __________ are highly resilient and eliminate the single-point-of-failure risk with traditional Hadoop deployments
A. EMR
B. Isilon solutions
C. AWS
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Isilon solutions
7. Point out the wrong statement :
A. EMC Isilon Scale-out Storage Solutions for Hadoop combine a powerful yet simple and highly efficient storage platform
B. Isilon native HDFS integration means you can avoid the need to invest in a separate Hadoop infrastructure
C. NoSQL systems do provide high latency access and accommodate less concurrent users
D. None of the mentioned
Show Correct Answer
Correct Answer is :
NoSQL systems do provide high latency access and accommodate less concurrent users
8. HDFS and NoSQL file systems focus almost exclusively on adding nodes to :
A. Scale out
B. Scale up
C. Both Scale out and up
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Scale out
9. Which is the most popular NoSQL database for scalable big data store with Hadoop ?
A. Hbase
B. MongoDB
C. Cassandra
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Hbase
10. The ___________ can also be used to distribute both jars and native libraries for use in the map and/or reduce tasks.
A. DataCache
B. DistributedData
C. DistributedCache
D. All of the mentioned
Show Correct Answer
Correct Answer is :
DistributedCache
11. HBase provides ___________ like capabilities on top of Hadoop and HDFS.
A. TopTable
B. BigTop
C. Bigtable
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Bigtable
12. _______ refers to incremental costs with no major impact on solution design, performance and complexity.
A. Scale-out
B. Scale-down
C. Scale-up
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Scale-up
13. Which of the following class provides access to configuration parameters ?
A. Config
B. Configuration
C. OutputConfig
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Configuration
14. Point out the correct statement :
A. Configuration parameters may be declared static
B. Unless explicitly turned off, Hadoop by default specifies two resources
C. Configuration class provides access to configuration parameters
D. None of the mentioned
Show Correct Answer
Correct Answer is :
Configuration parameters may be declared static
15. ___________ gives site-specific configuration for a given hadoop installation.
A. core-default.xml
B. core-site.xml
C. coredefault.xml
D. all of the mentioned
Show Correct Answer
Correct Answer is :
core-site.xml
16. Administrators typically define parameters as final in __________ for values that user applications may not alter.
A. core-default.xml
B. core-site.xml
C. coredefault.xml
D. all of the mentioned
Show Correct Answer
Correct Answer is :
core-site.xml
17. Point out the wrong statement :
A. addDeprecations adds a set of deprecated keys to the global deprecations
B. configuration parameters cannot be declared final
C. addDeprecations method is lockless
D. none of the mentioned
Show Correct Answer
Correct Answer is :
configuration parameters cannot be declared final
18. _________ method clears all keys from the configuration.
A. clear
B. addResource
C. getClass
D. none of the mentioned
Show Correct Answer
Correct Answer is :
clear
19. ________ method adds the deprecated key to the global deprecation map.
A. addDeprecits
B. addDeprecation
C. keyDeprecation
D. none of the mentioned
Show Correct Answer
Correct Answer is :
addDeprecation
20. ________ checks whether the given key is deprecated.
A. isDeprecated
B. setDeprecated
C. isDeprecatedif
D. all of the mentioned
Show Correct Answer
Correct Answer is :
isDeprecated
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