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Oozie Workflow jobs are Directed ________ graphs of actions.
(a) Acyclical
(b) Cyclical
(c) Elliptical
(d) All of the mentioned
The correct option is (a) AcyclicalTo elaborate: Oozie is a framework allowing to combine multiple Map/Reduce jobs into a logical unit of work.
The correct option is (a) Acyclical
To elaborate: Oozie is a framework allowing to combine multiple Map/Reduce jobs into a logical unit of work.
See lessKafka maintains feeds of messages in categories called __________
(a) topics
(b) chunks
(c) domains
(d) messages
Correct answer is (a) topicsThe explanation is: We’ll call processes that publish messages to Kafka topic producers.
Correct answer is (a) topics
The explanation is: We’ll call processes that publish messages to Kafka topic producers.
See less__________ is one of many possible IAuthorizer implementations and the one that stores permissions in the system_auth.permissions table to support all authorization-related CQL statements.
(a) CassandraAuth
(b) CassandraAuthorizer
(c) CassAuthorizer
(d) All of the mentioned
The correct choice is (b) CassandraAuthorizerThe best explanation: Configuration consists mainly of changing the authorizer option in the cassandra.yaml to use the CassandraAuthorizer.
The correct choice is (b) CassandraAuthorizer
The best explanation: Configuration consists mainly of changing the authorizer option in the cassandra.yaml to use the CassandraAuthorizer.
See lessWhich of the following is not a table scope operator?
(a) MEMSTORE_FLUSH
(b) MEMSTORE_FLUSHSIZE
(c) MAX_FILESIZE
(d) All of the mentioned
The correct option is (a) MEMSTORE_FLUSHThe explanation: Using alter, you can set and remove table scope operators such as MAX_FILESIZE, READONLY, MEMSTORE_FLUSHSIZE, DEFERRED_LOG_FLUSH, etc.
The correct option is (a) MEMSTORE_FLUSH
The explanation: Using alter, you can set and remove table scope operators such as MAX_FILESIZE, READONLY, MEMSTORE_FLUSHSIZE, DEFERRED_LOG_FLUSH, etc.
See lessApache ________ is a lightweight server for ActivityStreams.
(a) Sirona
(b) Taverna
(c) Slider
(d) Streams
Right choice is (d) StreamsFor explanation I would say: Taverna is a domain-independent suite of tools used to design and execute data-driven workflows.
Right choice is (d) Streams
For explanation I would say: Taverna is a domain-independent suite of tools used to design and execute data-driven workflows.
See lessA ________ is a way of extending Ambari that allows 3rd parties to plug in new resource types along with the APIs.
(a) trigger
(b) view
(c) schema
(d) none of the mentioned
Right option is (b) viewTo explain: A view is an application that is deployed into the Ambari container.
Right option is (b) view
To explain: A view is an application that is deployed into the Ambari container.
See lessPoint out the correct statement.
(a) Interface FieldMapping is used for mapping of field
(b) Interface FieldMappable is used for mapping of field
(c) Sqoop is nothing but NoSQL to Hadoop
(d) Sqoop internally uses ODBC interface so it should work with any JDBC compatible database
Right option is (b) Interface FieldMappable is used for mapping of fieldFor explanation I would say: FieldMappable Interface describes a class capable of returning a map of the fields of the object to their values.
Right option is (b) Interface FieldMappable is used for mapping of field
For explanation I would say: FieldMappable Interface describes a class capable of returning a map of the fields of the object to their values.
See less___________ takes node and rack locality into account when deciding which blocks to place in the same split.
(a) CombineFileOutputFormat
(b) CombineFileInputFormat
(c) TextFileInputFormat
(d) None of the mentioned
Right answer is (b) CombineFileInputFormatThe explanation is: CombineFileInputFormat does not compromise the speed at which it can process the input in a typical MapReduce job.
Right answer is (b) CombineFileInputFormat
The explanation is: CombineFileInputFormat does not compromise the speed at which it can process the input in a typical MapReduce job.
See less____________ is used for storing one of the replicas in SSD.
(a) Hot
(b) Lazy_Persist
(c) One_SSD
(d) All_SSD
Correct option is (c) One_SSDBest explanation: The remaining replicas are stored in DISK.
Correct option is (c) One_SSD
Best explanation: The remaining replicas are stored in DISK.
See lessWhich of the following has methods to deal with metadata?
(a) LoadPushDown
(b) LoadMetadata
(c) LoadCaster
(d) All of the mentioned
The correct option is (b) LoadMetadataThe explanation is: Most implementation of loaders don’t need to implement this unless they interact with some metadata system.
The correct option is (b) LoadMetadata
The explanation is: Most implementation of loaders don’t need to implement this unless they interact with some metadata system.
See less