Free Access Huawei.H13-711-ENU.v2025-02-12.q181 Practice Test (Page 16)

Question 71

RDD has Transformation and Action operators. Which of the following belongs to the Action operator?

A.filter

B.map

C.reduceByKey

D.saveAsTextFile

Question 72

In Spark on YARN mode, the node without NodeManager cannot start the executor to execute the Task

A.True

B.False

Question 73

After using the Streaming client shell command to submit the topology in the Fusioninsight HD system, I use the Strom UI to view and find that the topology has not processed data for a long time. What may be the reason? (Multiple choice)

A.Supervisor is a component that receives data in topology and then performs processing

B.There is a logic error in the topology business, and it cannot run normally after submission

C.The slots resources of the Supervisor are exhausted. After the topology is submitted, there are no slots to start the worker process.

D.The topology is too complex or the concurrency is too large, causing the worker startup time to be too long, exceeding the waiting time of the Supervisor

Question 74

Which of the following statements about Kafka Partition are correct? (Multiple choice)

A.Each Partition corresponds to a log file at the storage level

B.Each Partition is an ordered and immutable message queue

C.Introduce the Partition mechanism to ensure the high throughput of Kafka

D.The number of Partitions determines the maximum number of concurrent consumers in each consumer group

Question 75

Hive is a data warehouse infrastructure built on Hadoop. It provides a set of tools that can be used to extract, transform and load (ETL), which is a mechanism for storing, querying and analyzing large-scale data stored in Hadoop.