. . . . . . . . is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer.

__________ 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

____________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer.

A

OutputCompactor

B

OutputCollector

C

InputCollector

D

All of the mentioned

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create anapplication. The application uses the ADO.NET Entity Framework to model entities. Theapplication allows users to make changes to entities while disconnected from the central data store. You need to ensure that when the user connects to the central data store and retrieves new data, the application meets the following requirements:

Changes made to the local data store in disconnected mode are preserved.
Entities that have already been loaded into the local data store, but have not been modified by the user, are updated with the latest data.

What should you do?

A

Call the query's Execute method by using the MergeOptions.AppendOnly option.

B

Call the query's Execute method by using the MergeOptions.OverwriteChanges option.

C

Call the Refresh method of ObjectContext by using the RefreshMode.StoreWins option.

D

Call the Refresh method of ObjectContext by using the RefreshMode.ClientWins method.

Which of the following statements are true?
Statement I Big data refers to no precise quantity, but generally refers to data in the range of Petabytes and Exabyte, i.e. billions to trillions of records, all from various sources. Big data is generated much faster. than traditional data in much larger quantities.
Statement II Big data interests industries because they are able to learn more patterns and curious variances than smaller data sets, with the capability to provide valuable insights into consumer behaviour, weather systems, financial market activity, or other phenomena.
Statement III Various departments and product lines use various applications within most organisations and store data in separate datasets. These separate databases may contain similar data, but data from one data base to another is not always consistent. This is called data silo.

A

Both statements I and II

B

Both statements II and III

C

Both statements I and III

D

All of the above

What is the significance of the Hadoop MapReduce "MapReduce over HBase" in advanced MapReduce?

A

Process data stored in HBase

B

Process data stored in HDFS

C

Execute MapReduce jobs

D

Manage computation resources

In advanced MapReduce, what is the significance of the Hadoop MapReduce "MapReduce speculative execution"?

A

Execute multiple Map tasks in parallel

B

Execute a backup task if the original task is slow

C

Execute Map and Reduce tasks simultaneously

D

Execute tasks in a distributed environment

________ is a utility which allows users to create and run jobs with any executables as the mapper and/or the reducer.

A

Hadoop Strdata

B

Hadoop Streaming

C

Hadoop Stream

D

None of the mentioned

Mapper and Reducer implementations can use the ________ to report progress or just indicate that they are alive.

A

Partitioner

B

OutputCollector

C

Reporter

D

All of the mentioned

The ___________ executes the Mapper/ Reducer task as a child process in a separate jvm.

A

JobTracker

B

TaskTracker

C

TaskScheduler

D

None of the mentioned

. . . . . . . . is a utility which allows users to create and run jobs with any executables as the mapper and/or the reducer.

A

Hadoop Strdata

B

Hadoop Streaming

C

Hadoop Stream

D

None of the mentioned

. . . . . . . . is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer.

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