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Free Huawei Other Certification H13-723-ENU Ultimate Study Guide (Updated 155 Questions)
NEW QUESTION 86
When Flume writes into HDFS, what are the file generation methods? (multiple choice)
- A. Set the number of events stored in a single file. When the number of events stored in the file reaches the set value, the old file will be closed and the new data will be written to the new file
- B. Set the file generation time interval. When the time interval is reached, the old file will be closed and the new data will be written into the new file
- C. According to the source file name, directly generate the file
- D. Set the size of a single file. When the file size reaches the set value, the old file will be closed and the new data will be written into the new file
Answer: A,B,C,D
NEW QUESTION 87
During the Solr application development of FusionInsight HD products, you can verify the Collection through the Solr Admin UI.
Which of the following statements about Solr Admin UI is correct? (multiple choice)
- A. Solr user group, Solr admin role and Super group users can access Solr Admin UI
- B. Click Cloud to view the distribution and status of each ShardReplica under each Collection
- C. Enter the Core Overview interface of the Shard Replica of a Collection, you can view the actual number of documents, storage size and location information of the Replica index
- D. Click Tree under Cloud to view metadata information such as Collections, configuration sets and live_nodes in Solr Cloud
Answer: A,B,C,D
NEW QUESTION 88
In the Solr application query scenario, when the query results are paged in depth, the cursor needs to be used to page in depth. Which of the following is correct about the cursor? (multiple choice)
- A. There will be nextCursorMark in the return result of Solr, use this value as oursorMark in the next call
- B. The uniqueKey field must be sorted
- C. When querying, the start parameter cannot be included in the request
- D. The query field must be sorted
- E. In the first query request, you need to specify the query parameters, the operation method is as follows: solrQuery.set (CursorMarkParams.CURSOR_MARK_PARAM, CursorMarkParams.CURSOR_MARK_START);
Answer: A,B,C,E
NEW QUESTION 89
Oozie's workflow.xml file is a workflow configuration file
- A. True
- B. False
Answer: A
NEW QUESTION 90
In Spark, the accumulator can realize high-speed parallel counter and variable summation; in the process of Spark application development, only the value of this counter can be obtained on the Driver.
- A. True
- B. False
Answer: A
NEW QUESTION 91
In FusionInsight HD, assuming a topology, spout concurrency is set to 3, bolt1 concurrency is 2, bolt2 concurrency is 3, and the number of workers is 2, then how are bolt1's executors distributed among workers?
- A. One of the two workers is distributed to two
- B. Two workers each distribute one
- C. There is no fixed pattern
- D. Two workers are distributed
Answer: B
NEW QUESTION 92
Regarding the flow of data in Flume, which of the following descriptions is correct?
- A. (1) Data from sink to channle; (2) Source gets data from channel
- B. (1) Data from channle to source; (2) Sink gets data from source
- C. (1) Data from channle to source; (2) Sink gets data from source
- D. (1) Data from source to channel; (2) Sink gets data from channel
Answer: D
NEW QUESTION 93
In the FusionInsight HD product, what is the role name of the Kafka service?
- A. Consumer
- B. Broker
- C. ZooKeeper
- D. Producer
Answer: B
NEW QUESTION 94
In Spark, which statement about broadcast variables is correct?
- A. The broadcast variable is saved in each Executor
- B. Broadcast variables are saved in each Task
- C. Broadcast variables are generated by the SparkContext.broadcast() method
- D. Broadcast variables are read-only
Answer: A,C,D
NEW QUESTION 95
In FusionInsigt HD, the user wants to query the contents of a certain HBase table through the HBase shell operation. In this scenario, it is recommended that the administrator assign a machine-to-machine account to the user.
- A. False
- B. True
Answer: A
NEW QUESTION 96
An application needs to interact with two FusionInsight clusters at the same time: it needs to access both the HBase service of cluster 1 and the Hive service of cluster 2;
So which of the following operations are necessary? (multiple choice)
- A. The accounts created by option A and option B must belong to the supergroup group
- B. Create an account with the same name in option A on cluster 2, and set this account to access the Hive service of this cluster
- C. Create the account required for this application on cluster 1, and set this account to access the HBase service of the cluster
- D. Cluster 1 and cluster 2 complete mutual trust operation
Answer: B,C,D
NEW QUESTION 97
Which of the following reasons will cause HDFS NameNode to enter safemode (safe read-only mode)? (multiple choice)
- A. The number of lost blocks exceeds the threshold.
- B. The damaged copy exceeds the threshold.
- C. The disk space where the metadata of the active and standby NameNodes reside is insufficient.
- D. The missing copy exceeds the threshold.
Answer: A,C
NEW QUESTION 98
In FusionInsight HD, regarding the secondary development of Hive UDF, which of the following descriptions is correct? (multiple choice)
- A. User-defined UDF is not allowed to add information such as summary and status.
- B. Before the user-defined UDF is used, it needs to be created in the Hive system.
- C. In a secure cluster, user-defined UDFs are recommended to be created before each use.
- D. User-defined UDF can add deterministic and statefull annotations according to the actual situation.
Answer: B,D
NEW QUESTION 99
In Streaming application development, which interface does Bolt use to send Tuples?
- A. nextTuple
- B. execute
- C. emit
- D. open
Answer: B
NEW QUESTION 100
For the design principles of HBase rowkey, which of the following descriptions is correct? (multiple choice)
- A. The attribute value with high access weight is placed in front of RowKey
- B. The attribute value with high access weight is placed in the second half of Rowkey
- C. The attribute value with good dispersion is placed in the first half of Rowkey
- D. Attribute values with good dispersion are placed in the second half of Rowkey
Answer: A,C
NEW QUESTION 101
The system time of the node where the HDFS client is located must be consistent with the system time of the FusionInsight HD cluster. If there is a time difference, the time difference should be less than a few minutes?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 102
When a MapReduce application is executed, which of the following actions occurred before the map phase?
- A. partition
- B. combine
- C. sort
- D. split
Answer: D
NEW QUESTION 103
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. False
- B. True
Answer: A
NEW QUESTION 104
In the FusionInsight HD cluster, regarding the kinit operation command, which of the following statements are wrong? (multiple choice)
- A. The ticket obtained by executing this command will time out after 24 hours. You need to execute the kinit command again to log in again.
- B. Only human-machine accounts can be used.
- C. A client does not support simultaneous use of multiple accounts.
- D. Only machine-to-machine accounts can be used.
Answer: B,C,D
NEW QUESTION 105
For an application running on the MapReduce platform, where will the jar package that the application depends on be placed?
- A. HIVE
- B. DB
- C. HBASE
- D. HDFS
Answer: D
NEW QUESTION 106
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