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NEW QUESTION 63
HBase filters can set column names or column values as filter conditions, and support multiple filters to be used together.
- A. True
- B. False
Answer: A
NEW QUESTION 64
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. Click Tree under Cloud to view metadata information such as Collections, configuration sets and live_nodes in Solr Cloud
- B. Click Cloud to view the distribution and status of each ShardReplica under each Collection
- C. Solr user group, Solr admin role and Super group users can access Solr Admin UI
- D. 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
Answer: A,B,C,D
NEW QUESTION 65
Which of the following scenarios is not suitable for Redis? (multiple choice)
- A. Complex transaction operations
- B. A message queue application that is consumed by multiple consumers at the same time and guarantees that the message is successfully consumed by all subscribers (subscription-notification)
- C. Counter application: for example, counting the number of people logged in to a certain website
- D. Get the latest N data: for example, get the latest 10 comments on a Weibo
Answer: A,B
NEW QUESTION 66
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 67
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 68
To create a table through HBase's createTable method, what parameters must be passed in?
- A. Can be empty
- B. Table name and column family
- C. Table names and columns
- D. Table name
Answer: B
NEW QUESTION 69
In Spark, SparkSQL is an independent module, which can independently complete SQL statement parsing, optimization, and execution without relying on SparkCore.
- A. True
- B. False
Answer: B
NEW QUESTION 70
For the HBase component of the FusionInsight HD platform, what attributes of the secondary index need to be defined when adding a secondary index? (multiple choice)
- A. The name of the column family to which the index column belongs
- B. Index column type
- C. Index column
- D. Index name
Answer: A,B,C,D
NEW QUESTION 71
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 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.
- B. Using string structure, each field in each row of each table uses a KEY.
- C. 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.
- D. 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.
Answer: C
NEW QUESTION 72
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: C
NEW QUESTION 73
Which Redis commands are atomic operations?
- A. INCR (increase the stored digital value by one)
- B. HINCRBY (add incremental increment to the field value in the hash table key)
- C. All of the above
- D. LPUSH (push operation on linked list)
Answer: C
NEW QUESTION 74
In FusionInsight HD, if there are multiple sources in a Flume configuration file, the source names cannot be repeated.
- A. True
- B. False
Answer: A
NEW QUESTION 75
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 76
Regarding the characteristics of Redis, which of the following descriptions is correct? (multiple choice)
- A. Support data persistence
- B. Support SQL query interface
- C. Low latency
- D. Rich data structure
Answer: A,C,D
NEW QUESTION 77
In FusionInsight HD, which of the following source types does Flume support? (multiple choice)
- A. Avro
- B. HBase
- C. Kafka
- D. HTTP
Answer: A,C,D
NEW QUESTION 78
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 79
HDFS adopts a file access model of "write once, read many times". Therefore, it is recommended that after a file is created, written, and closed, it should not be modified.
- A. True
- B. False
Answer: A
NEW QUESTION 80
If a user wants to develop an application to access the HBase service, he first applies for a machine-to-machine account teste1, and sets the permission to access the HBase service: then download the keytab file of the account and use the account to run the application. Subsequent business requirements for this application require access to the Hive service. After the tested user is granted access to the Hive component, the user's keytab file needs to be re-downloaded.
- A. True
- B. False
Answer: B
NEW QUESTION 81
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