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NEW QUESTION 60
For files stored in N (N>1) copies, the HDFS client initiates a file read request. If the read copy node fails, it will directly return to failure and will not go to other copy nodes for reading.
- A. True
- B. False
Answer: B
NEW QUESTION 61
In FusionInsight HD, for the creation and read-write permissions of various resources in Solr, which of the following statements is wrong?
- A. Users of the Solr user group can create Collection
- B. Collection creator, role with read and write access to the collection, and Solr admin role can update the collection
- C. Solr user group users can create a configuration set and specify the configuration set when creating a Collection
- D. Only the collection creator and Solr admin roles can delete a collection
Answer: C
NEW QUESTION 62
In FusionInsight HD, regarding the secondary development of Hive UDF, which of the following descriptions is correct? (multiple choice)
- A. User-defined UDF can add deterministic and statefull annotations according to the actual situation.
- B. Before the user-defined UDF is used, it needs to be created in the Hive system.
- C. User-defined UDF is not allowed to add information such as summary and status.
- D. In a secure cluster, user-defined UDFs are recommended to be created before each use.
Answer: A,B
NEW QUESTION 63
In HDFS application development, which of the following are the interfaces supported by the HDFS service? (multiple choice)
- A. FileSystem.create
- B. BufferedOutputStream.flush
- C. BufferedOutputStream.write
- D. FileSystem.append
Answer: A,B,C,D
NEW QUESTION 64
What distributed computing framework does the FusionInsigt HD big data platform provide? (multiple choice)
- A. HBase
- B. Spark
- C. Streaming
- D. MapReduce
Answer: B,C,D
NEW QUESTION 65
When a task is submitted to the YARN cluster, which of the following options will generate a job id for the task?
- A. ResourceManager
- B. container
- C. NodeManager
- D. AppMaster
Answer: A
NEW QUESTION 66
In FusionInsight HD, what are the computing frameworks that can be used in real-time processing scenarios? (multiple choice)
- A. MapReduoe
- B. HDFS
- C. Spark Streaming
- D. Streaming
Answer: C,D
NEW QUESTION 67
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. Cluster 1 and cluster 2 complete mutual trust operation
- B. Create the account required for this application on cluster 1, and set this account to access the HBase service of the cluster
- C. 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
- D. The accounts created by option A and option B must belong to the supergroup group
Answer: A,B,C
NEW QUESTION 68
Regarding Streaming's topology, what is wrong in the following description?
- A. Topology will keep running until it is explicitly killed
- B. A Topology can only specify to start one Worker process
- C. A Topology is a directed acyclic graph (DAG) connected by a set of Spout components and Bolt components through Stream Groupings
- D. Business logic is encapsulated in Topology
Answer: B
NEW QUESTION 69
In FusionInsight HD, which of the following scenarios does Streaming apply to? (multiple choice)
- A. Offline log analysis
- B. Streaming data monitoring
- C. Traffic flow analysis
- D. Real-time access statistics of the website
Answer: B,C,D
NEW QUESTION 70
In Kafka, which statement about Consumer is correct? (multiple choice)
- A. The new ConsumerAPI consumption data does not need to specify the ZooKeeper address
- B. When multiple Consumers are configured with the same group.id, the data consumed by these Consumers will not be repeated
- C. Consumer mainly conducts data consumption
- D. Topic needs to be specified when Consumer consumes data
Answer: A,B,C,D
NEW QUESTION 71
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. True
- B. False
Answer: B
NEW QUESTION 72
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
Answer: A
NEW QUESTION 73
In a FusionInsight HD cluster, Flume does not support writing collected data to which service in the cluster?
- A. HDFS
- B. HBase
- C. Redis
- D. Kafka
Answer: C
NEW QUESTION 74
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 secure cluster environment, before establishing a connection with Hive, you need to log in using a unified authentication method.
- C. In a network isolation environment, ZooKeeper's IP can be configured as either a service IP or a management IP.
- D. When using JDBC to submit SQL, you can add a semicolon ";" after the SQL statement.
Answer: B
NEW QUESTION 75
When indexing in Solr, which of the following code snippets can significantly improve indexing performance? (multiple choice)
- A. 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();
- B. lbClient.setRequestWriter (new BinaryRequestWriter());
- C. if (updateRequest.getDocuments().size() >= 1000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); }
- D. if (updateRequest.getDocumentsMap().size() >= 10000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); }
Answer: B,D
NEW QUESTION 76
When the HDFS client writes files with N copies, which of the following is correct about the writing process? (multiple choice)
- A. The first copy of the data block is prioritized on the node where the client writing the data block is located.
- B. Each DataNode can store at most 1 copy.
- C. The copied file blocks are all stored on the same rack by default.
- D. Support multiple users to write to the same file at the same time.
Answer: A,B
NEW QUESTION 77
In the FusionInsight HD HBase cluster, Table1 belongs to Namespace1, Table2 belongs to Namespace2, and Table1 has two column families, namely cf11 and cf12, and Table2 has a column family named cf21. Which of the following schemes allows user account A to be at the same time Have read and write permissions for cf11 and cf21. (Multiple choice)
- A. Grant the user account Namespace1 read and write permissions
- B. Grant the user account Namespace1 and Namespace2 read and write permissions
- C. Give the user account global read permission
- D. Grant the user account Table1 and Tablet2 read and write permissions
Answer: B,D
NEW QUESTION 78
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