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NEW QUESTION 27
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. Attribute values with good dispersion are placed in the second half of Rowkey
- C. The attribute value with high access weight is placed in the second half of Rowkey
- D. The attribute value with good dispersion is placed in the first half of Rowkey
Answer: A,D
NEW QUESTION 28
Which role in Yarn manages the resources (CPU/Memory) of a single node?
- A. ResourceManager
- B. NodeManager
- C. Data Node
- D. NameNode
Answer: B
NEW QUESTION 29
When using Solr for full-text search, you can specify the response format of the query result through the wt parameter.
Regarding the response format of Solr query results, what is wrong in the following statement?
- A. Support CSV, JSON and XML
- B. Support CSV and JSON
- C. Support CSV, JSON and HTML
Answer: C
NEW QUESTION 30
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. True
- B. False
Answer: B
NEW QUESTION 31
In FusionInsight HD, Oozie needs to upload the configuration files and jar packages that the job relies on to HDFS before submitting the job
- A. True
- B. False
Answer: A
NEW QUESTION 32
In FusionInsight HD, which method of the OozieClient class will be called by the JAVA API of the Oozie client when running tasks?
- A. submit
- B. suspend
- C. getJobInfo
- D. run
Answer: D
NEW QUESTION 33
In Flume, what is the main function of the source function module?
- A. Split the data and send the data to different destinations according to the characteristics of the data
- B. Obtain data and convert the original data into data objects that you process
- C. Output data to destination, support multiple output protocols
- D. Cache data and save the data in memory or files according to different reliability strategies
Answer: B
NEW QUESTION 34
A large manufacturing company plans to transform its internal logistics data and sales data into big data. The design department has given an analysis of the data storage plan. Which of the following descriptions is correct?
- A. HBase stores massive data and supports dynamic expansion, which can fulfill the storage requirements of logistics and sales data.
- B. Logistics data is very sparse, and HBase can efficiently process sparse data.
- C. HBase can be built on ordinary commercial servers, and the construction cost is relatively low.
- D. Hbase supports efficient random reading, and can complete real-time analysis and command of the logistics situation after a reasonable design.
Answer: A,B,C,D
NEW QUESTION 35
In Kafka, Consumer can support both offline and online message consumption, but the consumption of data is sequential consumption.
- A. True
- B. False
Answer: A
NEW QUESTION 36
In the MapReduce development framework, what is the function of the InputFormat class?
- A. Split the input data into individual splits, and further split the split into <key, value> pairs, which are then used as the input of the map function
- B. Combine the results of all map stages to get the final result
- C. Combine key-value pairs with the same key value in the result of the map phase
- D. Sort and merge the results of the map stage
Answer: A
NEW QUESTION 37
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. Before the user-defined UDF is used, it needs to be created in the Hive system.
- C. User-defined UDF can add deterministic and statefull annotations according to the actual situation.
- D. User-defined UDF is not allowed to add information such as summary and status.
Answer: B,C
NEW QUESTION 38
In FusionInsigt HD, an application deployed on Tomcat needs to access the HBase service. In this scenario, it is recommended to use a machine-to-machine account.
- A. True
- B. False
Answer: A
NEW QUESTION 39
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. Support multiple users to write to the same file at the same time.
- D. The copied file blocks are all stored on the same rack by default.
Answer: A,B
NEW QUESTION 40
Suppose there is an application, there are 10 tables, each table has tens of millions of records, and the number of fields is about 20.
Now Redis is used to cache the data of these 10 tables. For the design of the data structure, which of the following is the best design?
- A. Using a hash structure, each row record of each table uses a hash KEY, the field of the hash KEY corresponds to the field of the table record, and each table is designed with a different prefix to distinguish it.
- B. Using string structure, each row of each table uses a KEY, and value is the concatenated value of all the fields in a row of the table.
- C. A hash structure is adopted, and a table uses a hash KEY, and a row in the table records a field for the hash KEY.
- D. Using string structure, each field in each row of each table uses a KEY.
Answer: A
NEW QUESTION 41
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. In a secure cluster environment, before establishing a connection with Hive, you need to log in using a unified authentication method.
- D. When using JDBC to submit SQL, you can add a semicolon ";" after the SQL statement.
Answer: C
NEW QUESTION 42
Which of the following business applications is not suitable for Hive?
- A. Data summary (number of user clicks per day/week, click ranking)
- B. Real-time online data analysis
- C. Data mining (user behavior analysis, interest division, regional display)
- D. Non-real-time analysis (log analysis, statistical analysis)
Answer: B
NEW QUESTION 43
What is the role of the setMapOutputCompressorClass class in the development of MapReduce applications?
- A. Set the compression method of reduce output
- B. Set the compression method of Smap input
- C. Set the compression method of map output
- D. Set the delivery method of map output
Answer: C
NEW QUESTION 44
In FusionInsight HD, for the creation and read-write permissions of various resources in Solr, which of the following statements is wrong?
- A. Only the collection creator and Solr admin roles can delete a collection
- B. Users of the Solr user group can create Collection
- C. Collection creator, role with read and write access to the collection, and Solr admin role can update the collection
- D. Solr user group users can create a configuration set and specify the configuration set when creating a Collection
Answer: D
NEW QUESTION 45
In HBase application development, when the Rowkey range and distribution of a table are known, it is recommended to pre-divide regions. After calling the following code (fragment) to pre-divide a table into regions, this table will create several regions.
//Create a table of pre-partitioned regions
byte[][] splits=new byte[4][];
splits[0] = Bytes.toBytes("A");
splits[1] = Bytes.toBytes("H");
splits[2] = Bytes.toBytes("O");
splits[3] = Bytes.toBytes("U");
admin.createTable (htd, splits);
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 46
Which source type does Flume support for real-time data collection?
- A. Thrift
- B. JMS
- C. Log4j
- D. taildir
Answer: D
NEW QUESTION 47
In FusionInsight HD, what are the data distribution methods belonging to Streaming? (multiple choice)
- A. Direct Grouping
- B. Local Grouping
- C. Field Grouping
- D. Shuffle Grouping
Answer: A,B,C,D
NEW QUESTION 48
Regarding the file format provided by Hive in the FusionInsight HD system, which is not a columnar file?
- A. CRC
- B. Parquet
- C. TextFiIe
- D. RCFile
Answer: C
NEW QUESTION 49
When the HDFS client writes files to HDFS with N copies, if one of the copies fails to write, all copies will return the write failure.
- A. True
- B. False
Answer: B
NEW QUESTION 50
What distributed computing framework does the FusionInsigt HD big data platform provide? (multiple choice)
- A. MapReduce
- B. HBase
- C. Spark
- D. Streaming
Answer: A,C,D
NEW QUESTION 51
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 52
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