최신 HDP Certified Developer HADOOP-PR000007 무료샘플문제:
1. In a large MapReduce job with m mappers and n reducers, how many distinct copy operations will there
be in the sort/shuffle phase?
A) m
B) mXn (i.e., m multiplied by n)
C) n
D) mn (i.e., m to the power of n)
E) m+n (i.e., m plus n)
2. You use the hadoop fs -put command to write a 300 MB file using and HDFS block size of 64 MB. Just
after this command has finished writing 200 MB of this file, what would another user see when trying to
access this life?
A) They would see Hadoop throw an ConcurrentFileAccessException when they try to access this file.
B) They would see the current state of the file, up to the last bit written by the command.
C) They would see the current of the file through the last completed block.
D) They would see no content until the whole file written and closed.
3. What does Pig provide to the overall Hadoop solution?
A) C++ interface to MapReduce and data warehouse infrastructure
B) Legacy language Integration with MapReduce framework
C) Simple scripting language for writing MapReduce programs
D) Database table and storage management services
4. The Hadoop framework provides a mechanism for coping with machine issues such as faulty
configuration or impending hardware failure. MapReduce detects that one or a number of machines are
performing poorly and starts more copies of a map or reduce task. All the tasks run simultaneously and
the task finish first are used. This is called:
A) Speculative Execution
B) IdentityMapper
C) IdentityReducer
D) Combine
E) Default Partitioner
5. Given the following Hive command:
INSERT OVERWRITE TABLE mytable SELECT * FROM myothertable;
Which one of the following statements is true?
A) The statement is not a valid Hive command
B) A new table named mytable is created, and the contents of myothertable are copied into mytable
C) Any existing data in mytable will be overwritten
D) The contents of myothertable are appended to mytable
질문과 대답:
| 질문 # 1 정답: B | 질문 # 2 정답: C | 질문 # 3 정답: C | 질문 # 4 정답: A | 질문 # 5 정답: C |
1155 개 고객 리뷰
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