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NEW QUESTION 32
In FusionInsight HD, use the Streaming command line to submit the om.huawei.examole.WordCount task in example.jar. The task name is wcTest. Which of the following commands is correct?
- A. storm jar example .jar wcTest om.huawei.example.WordCount
- B. storm jar example.jar WordCount wcTest
- C. storm jar example .jar wcTest WordCount
- D. storm jar example .jar om.huawei.example.WordCount wcTest
Answer: D
NEW QUESTION 33
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 34
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. list
- C. sorted set
- D. hash
Answer: D
NEW QUESTION 35
In FusionInsight HD, for the creation and read-write permissions of various resources in Solr, which of the following statements is wrong?
- A. Collection creator, role with read and write access to the collection, and Solr admin role can update the collection
- B. Only the collection creator and Solr admin roles can delete a collection
- C. Users of the Solr user group can create Collection
- D. Solr user group users can create a configuration set and specify the configuration set when creating a Collection
Answer: D
NEW QUESTION 36
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 start command can make the job in the PREP state become RUNNING
- C. The submit command can change the status of the job to PREP
- D. The run command can make the job status RUNNING
Answer: A,B,C,D
NEW QUESTION 37
Regarding the characteristics of Redis, which of the following descriptions is correct? (multiple choice)
- A. Support data persistence
- B. Low latency
- C. Support SQL query interface
- D. Rich data structure
Answer: A,B,D
NEW QUESTION 38
In Spark, assuming that lines is a DStream object, which of the following statements can periodically count the number of words on this stream?
- A. Iines.flatMap(_.split (" " )).map(word => (word, 1)).reduce(_ +_).print()
- B. Iines.fIatMap(_.spIit (" " )).map(word => (word, 1)).reduceByKey(_ +_).print()
- C. Iines.flatMap(_.split (" " )).flatMap(word => (word, 1)).groupByKey(_ +_).print()
- D. Iines.flatMap(_.split (" " )).map(word => (word,word.Iength())).reduceByKey (_ +_).print()
Answer: B
NEW QUESTION 39
Spark Streaming, as a stream processing engine for micro-batch processing, converts the data of each time slice into a partition in an RDD for calculation.
- A. True
- B. False
Answer: A
NEW QUESTION 40
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 41
Regarding Kafka's Producer, which of the following statements is correct? (multiple choice)
- A. Producer is a message producer
- B. Producer production data needs to specify Topic
- C. Multiple Producer processes can be started at the same time to send data to the same topic
- D. When Producer produces data, it needs to connect to ZooKeeper first, and then connect to Broker
Answer: A,B,C
NEW QUESTION 42
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 43
Which of the following descriptions about the characteristics of Kafka is correct? (multiple choice)
- A. Kafka is suitable for offline and online message consumption scenarios
- B. Kafka can achieve message persistence
- C. Kafka can ensure that the messages in each Partition are in order
- D. Kafka is a high-throughput, distributed, publish-and-subscribe messaging system
Answer: A,B,C,D
NEW QUESTION 44
In the FusionInsight HD system, what interface types does Hive support? (multiple choice)
- A. JDBC interface
- B. Python interface
- C. Ruby interface
- D. ODBC interface
Answer: A,B,D
NEW QUESTION 45
When HDFS is running, the NameNode will load all the metadata of the file system from the disk to the memory. Therefore, the total number of files that the file system can store is limited by the memory capacity of the NameNode.
- A. True
- B. False
Answer: A
NEW QUESTION 46
When writing MapReduce applications, which two interfaces usually need developers to implement?
- A. reduce and combine
- B. map and reduce
- C. map and combine
- D. combine and sort
Answer: B
NEW QUESTION 47
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 48
In Streaming application development, which interface does Bolt use to send Tuples?
- A. nextTuple
- B. execute
- C. emit
- D. open
Answer: B
NEW QUESTION 49
In FusionInsight HD, in which ways can I view the debugging results of Oozie jobs? (multiple choice)
- A. Use Hue's file browser to check whether the desired file is generated in the HDFS specified directory
- B. Check whether the returned result of Oozie's JAVA API meets expectations
- C. Oozie's own web interface can also view job execution results
- D. View program running results through Hue's workflow dashboard
Answer: A,B,C,D
NEW QUESTION 50
Document is the main entity stored in the SolrColud cluster. It is the basic unit of indexing and query. It can contain one or more fields and is a set of data describing certain things. Each document must contain a uniqueKey field that can uniquely identify the document.
- A. True
- B. False
Answer: A
NEW QUESTION 51
Regarding the disaster tolerance of Streaming, which of the following statements is correct? (multiple choice)
- A. Worker can be automatically pulled up by Supervisor after abnormal exit without manual intervention.
- B. After the Supervisor process exits, it can be automatically recognized and pulled up by Nimbus without affecting the running business.
- C. When a node fails, tasks on that node will be reassigned to other normal nodes without manual intervention.
- D. After Nimbus fails, the standby Nimbus will automatically take over, without affecting the running business.
Answer: A,B,C,D
NEW QUESTION 52
In FusionInsight HD, what are the data distribution methods belonging to Streaming? (multiple choice)
- A. Local Grouping
- B. Field Grouping
- C. Shuffle Grouping
- D. Direct Grouping
Answer: A,B,C,D
NEW QUESTION 53
In FusionInsight HD, regarding Ooze job management, which of the following operations can be performed on suspended jobs? (multiple choice)
- A. resume
- B. kill
- C. run
- D. submit
Answer: A,B
NEW QUESTION 54
In FusionInsight HD V100R002C60, regarding the Hive Python interface type, which of the following descriptions is incorrect?
- A. Python secondary development does not support secure clusters
- B. The client must be installed with setuptools, and the version is not lower than 5.0
- C. The Python version is required to be no lower than 2.6.6 and no higher than 2.7.0
- D. The hive_python_client script provides the function of directly executing SQL, such as hive_python_client'show tables '
Answer: A
NEW QUESTION 55
What methods does FusionInsight HD support to submit Oozie jobs? (multiple choice)
- A. Shell commands
- B. Hue UI
- C. Rest API
- D. Java API
Answer: A,B,C,D
NEW QUESTION 56
When the cluster is normal, the Redis client initiates a get call, and there are () message interactions between the client and the server?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 57
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