In the Flink technical architecture, () is the computational engine for stream processing and batch processing.
A . Standalone
B . Runtime
C . DataStream
D . FlinkCore
Answer: B
In the Kafka cluster, what is the role of the Kafka server?
In the Kafka cluster, what is the role of the Kafka server?
A . Producer
B . Consumer
C . ZooKeeper
D . Broker
Answer: D
After the Loader job is submitted to YARN in Fusionlnsight HD, the job cannot be stopped manually.
After the Loader job is submitted to YARN in Fusionlnsight HD, the job cannot be stopped manually.
A . True
B . False
Answer: B
Which of the following is the wrong statement about ZooKeeper?
Which of the following is the wrong statement about ZooKeeper?
A . If ZooKeeper breaks during the synchronization message, after the fault is recovered, it can continue to synchronize according to the transmission status before the failure, that is, support the resume of the breakpoint.
B . ZooKeeper uses a custom atomic message protocol to ensure the consistency of node data throughout the system.
C . The ZooKeeper cluster elects the Leader role at startup.
D . After receiving the data change request, the Leader node writes the disk first and then writes the memory.
Answer: A
All nodes of ZooKeeper can process read requests.
All nodes of ZooKeeper can process read requests.
A . True
B . False
Answer: A
Which of the following description about the reliability of the Fusionlnsight HD system is correct? (Multiple Choice)
Which of the following description about the reliability of the Fusionlnsight HD system is correct? (Multiple Choice)
A. There are no single points of failure for all components.
B. All management nodes HA.
C. Software and hardware health monitoring.
D. Network plane isolation.
Answer: ABCD
The checkpoint mechanism in Flink continuously draws a snapshot of the stream application. The state snapshot of the stream application can only be saved in the HDFS file system.
The checkpoint mechanism in Flink continuously draws a snapshot of the stream application. The state snapshot of the stream application can only be saved in the HDFS file system.
A . True
B . False
Answer: B
The () interface in Flink is used for stream data processing, and the () interface is used for batch processing.
The () interface in Flink is used for stream data processing, and the () interface is used for batch processing.
A . Stream API, Batch API
B . DataStream API, Data Batch API
C . Data Batch API, DataStream API
D . Batch API, Stream API
Answer: B
In the Fusionlnsight HD platform, which components support table and column encryption? (Multiple Choice)
In the Fusionlnsight HD platform, which components support table and column encryption? (Multiple Choice)
A . HDFS
B . HBase
C . Hive
D . Flink
Answer: BC
In the HDFS system, the data block is stored in multiple copies. When the data block on a node is lost, a copy of the data needs to be manually copied to the node.
In the HDFS system, the data block is stored in multiple copies. When the data block on a node is lost, a copy of the data needs to be manually copied to the node.
A . True
B . False
Answer: B