최신 CCDH CCD-410 무료샘플문제:
1. You have just executed a MapReduce job. Where is intermediate data written to after being emitted from the Mapper's map method?
A) Into in-memory buffers that spill over to the local file system of the TaskTracker node running the Mapper.
B) Intermediate data in streamed across the network from Mapper to the Reduce and is never written to disk.
C) Into in-memory buffers that spill over to the local file system (outside HDFS) of the TaskTracker node running the Reducer
D) Into in-memory buffers on the TaskTracker node running the Mapper that spill over and are written into HDFS.
E) Into in-memory buffers on the TaskTracker node running the Reducer that spill over and are written into HDFS.
2. What is a SequenceFile?
A) A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous writable objects.
B) A SequenceFile contains a binary encoding of an arbitrary number of homogeneous writable objects.
C) A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in sorted order.
D) A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be same type.
3. You have user profile records in your OLPT database, that you want to join with web logs you have already ingested into the Hadoop file system. How will you obtain these user records?
A) Pig LOAD command
B) Hive LOAD DATA command
C) Sqoop import
D) Ingest with Flume agents
E) HDFS command
F) Ingest with Hadoop Streaming
4. MapReduce v2 (MRv2/YARN) splits which major functions of the JobTracker into separate daemons? Select two.
A) Job coordination between the ResourceManager and NodeManager
B) MapReduce metric reporting
C) Managing tasks
D) Job scheduling/monitoring
E) Resource management
F) Launching tasks
G) Heath states checks (heartbeats)
H) Managing file system metadata
5. Your client application submits a MapReduce job to your Hadoop cluster. Identify the Hadoop daemon on which the Hadoop framework will look for an available slot schedule a MapReduce operation.
A) DataNode
B) TaskTracker
C) NameNode
D) Secondary NameNode
E) JobTracker
질문과 대답:
| 질문 # 1 정답: A | 질문 # 2 정답: D | 질문 # 3 정답: C | 질문 # 4 정답: D,E | 질문 # 5 정답: E |
927 개 고객 리뷰
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