Huawei HCIP-Big Data Developer V1.0 - H13-723 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

Regarding Streaming's topology, what is wrong in the following description?

A. A Topology can only specify to start one Worker process B. Business logic is encapsulated in Topology C. A Topology is a directed acyclic graph (DAG) connected by a set of Spout components and Bolt components through Stream Groupings D. Topology will keep running until it is explicitly killed

Discussion 0

Correct Answer: A Vote an answer

Question 2

In the implementation of the business logic of HBase writing data, which of the following interfaces or classes does not need to be involved?

A. HTable B. Put C. HBaseAdmin D. PutList

Discussion 0

Correct Answer: C Vote an answer

Question 3

In FusionInsight HD, which of the following source types does Flume support? (multiple choice)

A. Avro B. Kafka C. HTTP D. HBase

Discussion 0

Correct Answer: A,B,C Vote an answer

Question 4

When the HDFS client writes files with N copies, which of the following is correct about the writing process? (multiple choice)

A. Each DataNode can store at most 1 copy. B. The copied file blocks are all stored on the same rack by default. C. Support multiple users to write to the same file at the same time. D. The first copy of the data block is prioritized on the node where the client writing the data block is located.

Discussion 0

Correct Answer: A,D Vote an answer

Question 5

As the core object of Spark, which of the following characteristics does RDD have? (multiple choice)

A. Partition B. Efficient C. Read only D. Fault tolerance

Discussion 0

Correct Answer: A,B,C,D Vote an answer

Question 6

In HDFS application development, which of the following are the interfaces supported by the HDFS service? (multiple choice)

A. BufferedOutputStream.flush B. FileSystem.create C. FileSystem.append D. BufferedOutputStream.write

Discussion 0

Correct Answer: A,B,C,D Vote an answer

Question 7

In FusionInsight HD, regarding the secondary development of Hive UDF, which of the following descriptions is correct? (multiple choice)

A. In a secure cluster, user-defined UDFs are recommended to be created before each use. B. User-defined UDF can add deterministic and statefull annotations according to the actual situation. C. Before the user-defined UDF is used, it needs to be created in the Hive system. D. User-defined UDF is not allowed to add information such as summary and status.

Discussion 0

Correct Answer: B,C Vote an answer

Question 8

In FusionInsight HD, the Streaming packaging tool is used to package the business code jar package and other dependent jar packages into a complete Streaming application jar package

A. True B. False

Discussion 0

Correct Answer: A Vote an answer

Question 9

Suppose there is an application that needs to frequently access the user table in the Oracle database. In order to improve performance, Redis is introduced to cache user information.
For this scenario, which of the following is the best data structure choice for Redis?

A. set B. hash C. list D. sorted set

Discussion 0

Correct Answer: B Vote an answer

Question 10

When indexing in Solr, which of the following code snippets can significantly improve indexing performance? (multiple choice)

A. if (updateRequest.getDocuments().size() >= 1000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); } B. SolrlnputDocument doc = new SolrlnputDocument(); doc.addField ("id", i.toString()); doc.addField ("name", "Zhang San" + i); doc.addField ("features", "test" + ); doc.addField ("price", (float) i * 1.01); cloudSolrClient.add (doc); cloudSolrClient.commit(); C. lbClient.setRequestWriter (new BinaryRequestWriter()); D. if (updateRequest.getDocumentsMap().size() >= 10000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); }

Discussion 0

Correct Answer: C,D Vote an answer

Question 11

Use FusionInsight HD's Hive to query data. When the amount of intermediate result data to be queried is large, you can choose to compress the intermediate result data to obtain better performance.
Which of the following are the relevant parameters for Hive intermediate result compression? (multiple choice)

A. hive.exec.compress.output B. hive.intermediate.compression.type C. hive.intermediate.compression.codec D. hive.exec.compress.intermediate

Discussion 0

Correct Answer: B,C,D Vote an answer

Question 12

Which of the following is correct about the HDFS client's file reading process? (multiple choice)

A. The file data is first returned from the DataNode to the NameNode, and then sent from the NameNode to the client. B. Download data from the nearest DataNode first. C. If the client and the connected DataNode fail during reading, the client will abandon the failed node and connect to the node where the other replica is located. D. Support multiple clients to read the same file data from the DataNode at the same time.

Discussion 0

Correct Answer: B,C,D Vote an answer

Question 13

There are scenarios where 500G of new data is generated by the online system every day, and these data need to be statistically summarized in dimensions such as days, weeks, and months.
Which table is suitable for Hive processing?

A. Tilt table, select the date in the tilt field, and the tilt value is random B. Partition table, partition by day C. Bucket table, according to talent D. Partition + bucket table, partitioned by time, 2560 buckets per partition

Discussion 0

Correct Answer: B Vote an answer

Question 14

In the V100R002C60 version of the FusionInsight HD system, Hive only supports query services based on the MapReduce engine, and does not support query services based on the Spark engine.

A. True B. False

Discussion 0

Correct Answer: B Vote an answer