H13-711-ENU by Huawei Valid Free Exam Practice Test

Question 1

The core concept of MapReduce is to decompose a large computing task to each node of the cluster, make full use of cluster resources, and shorten the running time.

A. False B. True

Correct Answer: B

Question 2

What is the meaning of this command "ALTER TABLEemployee1ADDcolumns (columnlstring);" in Hive?

A. Drop table B. Add columns C. Modify the file format D. Create table

Correct Answer: B

Question 3

In the era of big data, which of the following challenges are faced by enterprises? (Multiple choice)

A. There are problems such as noise, missing, and non-standard storage types in scattered data, which requires a lot of data preprocessing. B. Technological advances of competitors. C. The data is scattered among the various departments of the enterprise, and the same data is stored in different formats within each department. D. Data structure diversification.

Correct Answer: A,B,C,D

Question 4

In the Spark SQL table, there are often many small files (the size is much smaller than the HDFS block size). In this case, Spark will start more Tasks to process these small files. When there is a Shuffle operation in the SQL logic, It will greatly increase the number of hash buckets, which will seriously affect performance.

A. False B. True

Correct Answer: A

Question 5

Which operations in Hive can be merged? (Multiple choice)

A. JOIN B. SELECT C. UNION ALL D. GROUP BY

Correct Answer: C,D

Question 6

The fault-tolerant mechanism of Spark Streaming means that any partition error in RDD can be recalculated and generated according to its parent RDD. If the parent RDD is lost, you need to find the original data in the disk.

A. False B. True

Correct Answer: A

Question 7

On the Fusionlnsight Manager interface, when receiving a warning that the kafka disk capacity is insufficient, and the cause of the read warning has been ruled out as a disk hardware failure, the system administrator needs to consider expanding the capacity to solve this problem.

A. False B. True

Correct Answer: B

Question 8

The following figure shows the label storage strategy of HDFS. Observe the following figure, which data nodes will the HBase data be stored on? (Multiple choice)

A. DataNode B B. DataNode F C. DataNode A D. DataNode E

Correct Answer: A,C

Question 9

The driven source is that flume periodically and actively acquires data.

A. False B. True

Correct Answer: A

Question 10

Flink can not only provide real-time computing that supports high throughput and exactly-once semantics, but also batch data processing.

A. False B. True

Correct Answer: B

Question 11

Which of the following options are the advantages of Fusioninsight Spark SQL?

A. All of the above are correct B. SQL Compatibility C. Stable and high performance D. Long-term stability test E. Support data insertion, update and deletion

Correct Answer: A

Question 12

During the deployment of Fusioninsight HD, the Check Node. Config configuration file must be called when precheck is executed to check each node.

A. False B. True

Correct Answer: B

Huawei HCIA-Big Data(Huawei Certified ICT Associate-Big Data) - H13-711-ENU Exam Practice Test