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Huawei HCIA-Big Data V3.0 Sample Questions:

1. Which of the following are the optimization methods of Redis?

A) Limit Redis memory size
B) slowlog configuration
C) Turn off persistence
D) Reduced key-values

2. When importing data into a Hive table, the validity of the data will not be checked, but only when the data is read.

A) False
B) True

3. To reduce the amount of data written to disk, mapreduce supports compressing MOF (mapoutfile) before writing.

A) False
B) True

4. 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) It is impossible for each node of a kafka cluster to be l with each othereader and flower
B) If the leader fails, other followers will take over (become the new leader)
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) 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

5. In the Fusionlnisght HD system, the number of Partitions and the number of replicas must be set when creating the Topich of Kafkal. Setting up multiple replicas can enhance the disaster tolerance of the Kafka service.

A) False
B) True

Solutions: