Online Access Free CCD-410 Exam Questions

MapReduce v2 (MRv2/YARN) splits which major functions of the JobTracker into separate daemons? Select two.

• A.Managing file system metadata
• B.Heath states checks (heartbeats)
• C.Launching tasks
• D.Job scheduling/monitoring
• E.MapReduce metric reporting
• F.Managing tasks
• G.Resource management
• H.Job coordination between the ResourceManager and NodeManager

Indentify which best defines a SequenceFile?

• A.A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in sorted order.
• B.A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous Writable objects
• C.A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be the same type.
• D.A SequenceFile contains a binary encoding of an arbitrary number of homogeneous Writable objects

You want to perform analysis on a large collection of images. You want to store this data in HDFS and process it with MapReduce but you also want to give your data analysts and data scientists the ability to process the data directly from HDFS with an interpreted high-level programming language like Python. Which format should you use to store this data in HDFS?

• A.SequenceFiles
• B.Avro
• C.HTML
• D.CSV
• E.JSON
• F.XML

Your cluster's HDFS block size in 64MB. You have directory containing 100 plain text files, each of which is 100MB in size. The InputFormat for your job is TextInputFormat. Determine how many Mappers will run?

• A.200
• B.100
• C.640
• D.64

You have the following key-value pairs as output from your Map task:
(the, 1)
(fox, 1)
(faster, 1)
(than, 1)
(the, 1)
(dog, 1)
How many keys will be passed to the Reducer's reduce method?

• A.Two
• B.Three
• C.Five
• D.One
• E.Four
• F.Six