Online Access Free H13-711_V3.0 Practice Test

In order to improve the fault tolerance of Kafka, Kafka supports the replication strategy of partition. Which of the following descriptions about Leader partition and Follower partition is wrong?

• A.If the leader fails, other followers will take over (become the new leader)
• B.Because the leader server carries all the request pressure. Therefore, from the overall consideration of the cluster, kafka will distribute the leader evenly on each instance to ensure the overall performance is stable
• C.Kafka needs to select a leader for partition replication, and the leader is responsible for reading and writing partitionsD. operation, other replica nodes are only responsible for data synchronization
• D.It is impossible for each node of a kafka cluster to be l with each othereader and flower

SELECT a salary,b adiress FROM employee a JoiNsELECT adress FROM Employee info where provine ='zhejiang) b NO ananme=B. name: "What types of operations are included?

• A.J0IN query
• B.Import Data
• C.subquery
• D.create table

Regarding the alarm about insufficient disk capacity of Kafkat, which of the following analysis is incorrect for the possible reasons?

• A.The data storage time is configured too long, and the accumulated data reaches the upper limit of the disk usage.
• B.Caused by the failure of the rocker node
• C.Unreasonable business planning results in uneven data distribution and makes some disks reach the upper limit of usage
• D.The disk configuration used to store Kafka data (such as the number of disks, size, etC. ) cannot meet the current business data stream declaration, resulting in the disk usage reaching the upper limit

About RDDs. Which of the following statements is false?

• A.RDDs are stored on disk by default
• B.RDD is a read-only, partitionable distributed dataset
• C.RDD is Spark's abstraction of underlying data
• D.RDDs have a lineage mechanism (Lineed)

In order to ensure the reliability of snapshot storage of streaming applications, where are the snapshots mainly stored?

• A.In the memory of the JobManager
• B.In a single-machine database with high reliability
• C.in HDFS
• D.in the local file system