Master 2021 Latest The Questions Huawei Other Certification and Pass H13-723 Real Exam!
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NEW QUESTION 25
In Spark, because DataFrame is a higher-level interface than RDD, the call level will be more. Therefore, the performance of all programs developed based on DataFrame will be worse than that of programs developed based on RDD.
- A. False
- B. True
Answer: A
NEW QUESTION 26
In the FusionInsight HD system, with regard to the Hive JDBC interface type, which of the following descriptions is correct?
- A. Hive is different from traditional databases, so the connection established by JDBC does not need to be closed.
- B. In a network isolation environment, ZooKeeper's IP can be configured as either a service IP or a management IP.
- C. When using JDBC to submit SQL, you can add a semicolon ";" after the SQL statement.
- D. In a secure cluster environment, before establishing a connection with Hive, you need to log in using a unified authentication method.
Answer: D
NEW QUESTION 27
What distributed computing framework does the FusionInsigt HD big data platform provide? (multiple choice)
- A. MapReduce
- B. Streaming
- C. Spark
- D. HBase
Answer: A,B,C
NEW QUESTION 28
In FusionInsight HD, what are the roles that belong to the Streaming service? (multiple choice)
- A. Nimbus
- B. Supervisor
- C. Broker
- D. quorumpeer
Answer: A,B
NEW QUESTION 29
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. The query field must be sorted
- B. 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);
- C. There will be nextCursorMark in the return result of Solr, use this value as oursorMark in the next call
- D. The uniqueKey field must be sorted
- E. When querying, the start parameter cannot be included in the request
Answer: B,C,D,E
NEW QUESTION 30
Regarding FusionInsight HD's Spark, which of the following programming languages can be used to develop Spark applications? (multiple choice)
- A. Scala
- B. Python
- C. Java
- D. C
Answer: A,B,C
NEW QUESTION 31
In FusionInsight HD, regarding Oozie's job operation commands, which of the following descriptions are correct? (multiple choice)
- A. The kill command can be used on jobs in PREP/SUSPEND/RUNNING status
- B. The submit command can change the status of the job to PREP
- C. The run command can make the job status RUNNING
- D. The start command can make the job in the PREP state become RUNNING
Answer: A,B,C,D
NEW QUESTION 32
What are the several parameter setting methods for Spark applications? (multiple choices)
- A. When submitting the application, set it through --conf
- B. Configure in the application configuration file spark-defaults.conf
- C. In the application code, set by the setProperty method of SparkContext
- D. In the application code, set through the SparkConf object
Answer: A,B,D
NEW QUESTION 33
In FusionInsight HD, regarding the partition function of Hive, what is wrong in the following description?
- A. There can only be one partition field, and multi-level partitions cannot be created
- B. The partition field can be used as the condition of the where clause
- C. The partition field should be defined when the table is created
- D. Using partitions can reduce the data scan range of certain queries, thereby improving query efficiency
Answer: A
NEW QUESTION 34
In FusionInsight HD, when using Streaming's ACK mechanism, which of the following statements are correct? (multiple choice)
- A. After Acker is enabled, Streaming will identify the Tuple that failed to be sent and automatically resend it without human intervention.
- B. Acker will mark the processing timeout or processing failure message as fail.
- C. Starting from the spout, the failure of any link in the formed Tuple tree will mark the entire tree as a failure.
- D. The application needs to implement message retransmission logic in the fail() interface method of spout.
Answer: B,C,D
NEW QUESTION 35
In FusionInsight HD, where can I view the running results of the MapReduce application?
- A. FusionInsight Manager web interface
- B. Solr web interface
- C. Loader web interface
- D. Yarn web interface
Answer: D
NEW QUESTION 36
When a MapReduce application is executed, which of the following actions occurred before the map phase?
- A. partition
- B. split
- C. sort
- D. combine
Answer: B
NEW QUESTION 37
Because Spark is a memory-based computing engine, the amount of data that a Spars application can process cannot exceed the total memory allocated to the Spark application.
- A. False
- B. True
Answer: A
NEW QUESTION 38
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. Two workers are distributed
- B. Two workers each distribute one
- C. There is no fixed pattern
- D. One of the two workers is distributed to two
Answer: B
NEW QUESTION 39
In FusionInsight HD, which parts of a complete Streaming CQL application include at least? (multiple choice)
- A. Business operation statements (such as SELECT, INSERT, JION, etc.)
- B. Application submission statement
- C. Create an input stream
- D. Create an output stream
Answer: A,B,C,D
NEW QUESTION 40
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