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Interview question based on skill :

Take as many assements as you can to improve your validate your skill rating

Total Questions: 20

1. Which command is used to disable all the tables matching the given regex ?

A. remove all

B. drop all

C. disable_all

D. all of the mentioned

Correct Answer is : disable_all

2. __________ command disables drops and recreates a table.

A. drop

B. truncate

C. delete

D. none of the mentioned

Correct Answer is : truncate

3. Correct and valid syntax for count command is :

A. count ‘’

B. count ‘’

C. count ‘’

D. None of the mentioned

Correct Answer is : count ‘

’

4. For running hadoop service daemons in Hadoop in secure mode, ___________ principals are required.

A. SSL

B. Kerberos

C. SSH

D. None of the mentioned

Correct Answer is : Kerberos

5. Point out the correct statement :

A. Hadoop does have the definition of group by itself

B. MapReduce JobHistory server run as same user such as mapred

C. SSO environment is managed using Kerberos with LDAP for Hadoop in secure mode

D. None of the mentioned

Correct Answer is : SSO environment is managed using Kerberos with LDAP for Hadoop in secure mode

6. The simplest way to do authentication is using _________ command of Kerberos.

A. auth

B. kinit

C. authorize

D. all of the mentioned

Correct Answer is : kinit

7. Data transfer between Web-console and clients are protected by using :

A. SSL

B. Kerberos

C. SSH

D. None of the mentioned

Correct Answer is : SSL

8. Point out the wrong statement :

A. Data transfer protocol of DataNode does not use the RPC framework of Hadoop

B. Apache Oozie which access the services of Hadoop on behalf of end users need to be able to impersonate end users

C. DataNode must authenticate itself by using privileged ports which are specified by dfs.datanode.address and dfs.datanode.http.address

D. None of the mentioned

Correct Answer is : None of the mentioned

9. In order to turn on RPC authentication in hadoop, set the value of hadoop.security.authentication property to :

A. zero

B. kerberos

C. FALSE

D. none of the mentioned

Correct Answer is : kerberos

10. The __________ provides a proxy between the web applications exported by an application and an end user.

A. ProxyServer

B. WebAppProxy

C. WebProxy

D. None of the mentioned

Correct Answer is : WebAppProxy

11. ___________ used by YARN framework which define how any container launched and controlled.

A. Container

B. ContainerExecutor

C. Executor

D. All of the mentioned

Correct Answer is : ContainerExecutor

12. The ____________ requires that paths including and leading up to the directories specified in yarn.nodemanager.local-dirs

A. TaskController

B. LinuxTaskController

C. LinuxController

D. None of the mentioned

Correct Answer is : LinuxTaskController

13. The configuration file must be owned by the user running :

A. DataManager

B. NodeManager

C. ValidationManager

D. None of the mentioned

Correct Answer is : NodeManager

14. Apache _______ is a serialization framework that produces data in a compact binary format.

A. Oozie

B. Impala

C. kafka

D. Avro

Correct Answer is : Avro

15. Point out the correct statement :

A. Apache Avro is a framework that allows you to serialize data in a format that has a schema built in

B. The serialized data is in a compact binary format that doesn’t require proxy objects or code generation

C. Including schemas with the Avro messages allows any application to deserialize the data

D. All of the mentioned

Correct Answer is : All of the mentioned

16. Avro schemas describe the format of the message and are defined using :

A. JSON

B. XML

C. JS

D. All of the mentioned

Correct Answer is : JSON

17. The ____________ is an iterator which reads through the file and returns objects using the next() method.

A. DatReader

B. DatumReader

C. DatumRead

D. None of the mentioned

Correct Answer is : DatumReader

18. Point out the wrong statement :

A. Java code is used to deserialize the contents of the file into objects

B. Avro allows you to use complex data structures within Hadoop MapReduce jobs

C. The m2e plugin automatically downloads the newly added JAR files and their dependencies

D. None of the mentioned

Correct Answer is : None of the mentioned

19. The ____________ class extends and implements several Hadoop-supplied interfaces.

A. AvroReducer

B. Mapper

C. AvroMapper

D. None of the mentioned

Correct Answer is : AvroMapper

20. ____________ class accepts the values that the ModelCountMapper object has collected.

A. AvroReducer

B. Mapper

C. AvroMapper

D. None of the mentioned

Correct Answer is : AvroReducer

| Snaprecruit.com

Interview question based on skill :

Take as many assements as you can to improve your validate your skill rating

Total Questions: 20

1. Which command is used to disable all the tables matching the given regex ?

2. __________ command disables drops and recreates a table.

3. Correct and valid syntax for count command is :

4. For running hadoop service daemons in Hadoop in secure mode, ___________ principals are required.

5. Point out the correct statement :

6. The simplest way to do authentication is using _________ command of Kerberos.

7. Data transfer between Web-console and clients are protected by using :

8. Point out the wrong statement :

9. In order to turn on RPC authentication in hadoop, set the value of hadoop.security.authentication property to :

10. The __________ provides a proxy between the web applications exported by an application and an end user.

11. ___________ used by YARN framework which define how any container launched and controlled.

12. The ____________ requires that paths including and leading up to the directories specified in yarn.nodemanager.local-dirs

13. The configuration file must be owned by the user running :

14. Apache _______ is a serialization framework that produces data in a compact binary format.

15. Point out the correct statement :

16. Avro schemas describe the format of the message and are defined using :

17. The ____________ is an iterator which reads through the file and returns objects using the next() method.

18. Point out the wrong statement :

19. The ____________ class extends and implements several Hadoop-supplied interfaces.

20. ____________ class accepts the values that the ModelCountMapper object has collected.

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