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NEW QUESTION 34
server.channels.ch1.transactioncapacity represents the transaction size, that is, the number of events that the current channel supports for transaction processing. It can be set to the same size as the batchsize of the source, but not less than the batchsize.
- A. True
- B. False
Answer: A
NEW QUESTION 35
Hardware failure is considered normal. In order to solve this problem, HDFS has designed a copy mechanism.
By default, one file, how many copies will HDFS save?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 36
Now server.channels=ch1 is available, set the Channel type to File Channel, which of the following configurations are correct?
- A. server.channels.type = file
- B. server.channels.type = memory
- C. server.channels.ch1.type = memory
- D. server.channels.ch1.type = file
Answer: D
NEW QUESTION 37
Which of the following does not belong to the characteristics of the MapReduce component in Hadoop?
- A. Real-time calculation
- B. High fault tolerance
- C. Easy to program
- D. Good scalability
Answer: A
NEW QUESTION 38
Spark and Hadoop are not suitable for iterative calculation computing.
- A. False
- B. True
Answer: A
NEW QUESTION 39
Assuming that HDFS only saves 2 copies when writing data. During the writing process, the HDFS Client first writes the data to DataNodel1 and then writes the data to DataNode2.
- A. False
- B. True
Answer: A
NEW QUESTION 40
If part of the information is allowed to be lost in the process of message processing, which of the following methods can be used to close the message reliability processing mechanism? (Multiple choice)
- A. Use Unanchor to send messages when Bolt sends messages
- B. Set the reference Config.Topology_ACKKRS to False
- C. Set the parameter Config.Topology_ACKKRS to 0
- D. When Spout sends a message, use the interface that does not specify the message ID of the message to send
Answer: A,C,D
NEW QUESTION 41
The RowKey of a table in HBase is divided the SplitKey into 9, e, a, z. How many Regions does this table have?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 42
In Streaming, one accurate message reliability level is achieved through the ACK mechanism.
- A. False
- B. True
Answer: A
NEW QUESTION 43
Which of the following nodes are included in the basic system architecture of HDFS? (Multiple choice)
- A. ResourceManager
- B. NameNode
- C. NodeManager
- D. Data Node
Answer: B,D
NEW QUESTION 44
Spark Streaming calculation is based on DStream, which decomposes streaming calculations into a series of short batch processing jobs.
- A. True
- B. False
Answer: A
NEW QUESTION 45
When the Fusioninsight Manager interface shows that the Hive service status is Bad, what are the possible reasons? (Multiple choice)
- A. MetaStore instance is unavailable
- B. HBase service is unavailable
- C. DBService is unavailable
- D. HDFS service is unavailable
Answer: A,C,D
NEW QUESTION 46
In the Huawei big data solution b, which of the following components are included in the bottom layer of Hadoop? (Multiple choice)
- A. hive
- B. miner
- C. fink
- D. spark
Answer: A,C,D
NEW QUESTION 47
YARN manages cluster resources through ResourceManager. What are its main functions? (Multiple choice)
- A. Application management
- B. Log management
- C. None of the above statements
- D. Cluster resource scheduling
Answer: A,D
NEW QUESTION 48
In creating a Loader job, which of the following steps can be used to set the filter type?
- A. Output
- B. Basic information
- C. Input settings
- D. Conversion
Answer: C
NEW QUESTION 49
Which of the following options belong to Fusioninsight data security? (Multiple choice)
- A. Component data encryption
- B. Operating system security hardening
- C. Data integrity check
- D. User authority authentication management
Answer: A,C
NEW QUESTION 50
In Spark on YARN mode, nodes without NodeManager deployed cannot start executor to execute tasks.
- A. True
- B. False
Answer: A
NEW QUESTION 51
In the Fusioninsight HD V100R002C60 version cluster, which of the following components need to be planned for metadata partitioning? (Multiple choice)
- A. Streaming
- B. Zookeeper
- C. Redis
- D. HBase
- E. Kafka
- F. HDFS
Answer: A,B,F
NEW QUESTION 52
Compared with open source Sqoop, what are the enhanced features of Loader? (Multiple choice)
- A. Graphical
- B. Security
- C. High reliability
- D. High performance
Answer: A,B,C,D
NEW QUESTION 53
Flink supports local mode and cluster mode deployment, other mode deployments are not currently supported.
- A. False
- B. True
Answer: A
NEW QUESTION 54
Which of the following aspects reflect Fusioninsight HD data high reliability? (Multiple choice)
- A. Disk hot swap
- B. Third-party backup system integration
- C. Critical data power failure protection
- D. Cross-data center disaster recovery
Answer: A,B,C,D
NEW QUESTION 55
What types of operations are included in "SELECT aa.salary, bb.address FROM employee aa JoiN SELECT adress FROM employee info where provine= 'zhejiang') bb ON aa.nanme=bb.name? (Multiple choice)
- A. Import data
- B. JOIN query
- C. Subqueries
- D. Create a table
Answer: B,C
NEW QUESTION 56
To set the maximum resource usage of queue QueueA in YARN, which parameter needs to be configured?
- A. yarn.scheduler.capacity.root.QueueA.user-limit-factor
- B. yarn.scheduler.capacity.root.QueueA.minimum-user-limit-percent
- C. yarn.scheduler.capacity.root.QueueA.maximum-capacity
- D. yarn.scheduler.capacity.root.QueueA.state
Answer: C
NEW QUESTION 57
In the Zookeeper service model, the Leader node exists in the active/standby mode, and other nodes belong to the Follower node.
- A. True
- B. False
Answer: A
NEW QUESTION 58
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