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Guide for Alibaba-ACA-BigData1

Quiz Alibaba-ACA-BigData1

10/77 Questions|Updated on 2022/11/04
Free Test
/ 10

Quiz

1/10
Scenario: Jack is the administrator of project prj1. The project involves a large volume of sensitive data such as bank account, medical record, etc. Jack wants to properly protect the data. Which of the follow statements is necessary?
Select the answer
1 correct answer
A.
set ProjectACL=true;
B.
add accountprovider ram;
C.
set ProjectProtection=true;
D.
use prj1;

Quiz

2/10
Where is the meta data (e.g.,table schemas) in Hive?
Select the answer
1 correct answer
A.
Stored as metadata on the NameNode
B.
Stored along with the data in HDFS
C.
Stored in the RDBMS like MySQL
D.
Stored in ZooKeeper

Quiz

3/10
MaxCompute tasks contain computational tasks and non-computational tasks. The computational tasks require actual operations on data stored in the table. MaxCompute parses the task to obtain its execution plan, and submits the task for execution. The noncomputational tasks require substantial reading of and modification to metadata information. Therefore, the task is not parsed, and no execution plan is provided. The task is directly submitted for execution. The latter one has a faster response speed than the former one. Which of the following operations on the table t_test is a computational task?
Select the answer
1 correct answer
A.
desc t_test
B.
alter table t_test add columns (comments string);
C.
select count(*) from t_test;
D.
truncate table t_test;

Quiz

4/10
When we use the MaxCompute tunnel command to upload the log.txt file to the t_log table, the t_log is a partition table and the partitioning column is (p1 string, p2 string). Which of the following commands is correct?
Select the answer
1 correct answer
A.
tunnel upload log.txt t_log/p1="b1”, p2="b2"
B.
tunnel upload log.txt t_log/(p1="b1”, p2="b2")
C.
tunnel upload log.txt t_log/p1="b1"/p2="b2"

Quiz

5/10
A Log table named log in MaxCompute is a partition table, and the partition key is dt. Anew partition is created daily to store the new data of that day. Now we have one month's data, starting from dt='20180101' to dt='20180131', and we may use to delete the data on 20180101.
Select the answer
1 correct answer
A.
delete from log where dt='20180101'
B.
truncate table where dt='20180101'
C.
drop partition log (dt='20180101')
D.
alter table log drop partition(dt='20180101')

Quiz

6/10
DataV is a powerful yet accessible data visualization tool, which features geographic information systems allowing for rapid interpretation of data to understand relationships, patterns, and trends. When a DataV screen is ready, it can embed works to the existing portal of the enterprise through .
Select the answer
1 correct answer
A.
URL after the release
B.
URL in the preview
C.
MD5 code obtained after the release
D.
Jar package imported after the release

Quiz

7/10
By integrating live dashboards, DataV can present and monitor business data simultaneously. This data-driven approach enables for well-organized data mining and analysis allowing the user to seize new opportunities that otherwise might remain hidden. It can support wide range of databases and data formats. Which of the following options DataV does not support?
Select the answer
1 correct answer
A.
Alibaba Cloud' s AnalyticDB, ApsaraDB
B.
Static data in CSV and JSON formats
C.
Oracle Database
D.
MaxCompute Project

Quiz

8/10
You want to understand more about how users browse your public website. For example, you want to know which pages they visit prior to placing an order. You have a server farm of 100 web servers hosting your website. Which is the most efficient process to gather these web servers across logs into traditional Hadoop ecosystem. Ingest the server web logs into HDFS using Apache
Select the answer
1 correct answer
A.
Just copy them into HDFS using curl
B.
Flume
C.
Channel these clickstreams into Hadoop using Hadoop Streaming
D.
Import all user clicks from your OLTP databases into Hadoop using Sqoop

Quiz

9/10
Your company stores user profile records in an OLTP databases. You want to join the serecords with web server logs you have already ingested into the Hadoop file system. What is the best way to obtain and ingest these user records?
Select the answer
1 correct answer
A.
Ingest with Hadoop streaming
B.
Ingest using Hive
C.
Ingest with sqoop import
D.
Ingest with Pig's LOAD command

Quiz

10/10
You are working on a project where you need to chain together MapReduce, Hive jobs. You also need the ability to use forks, decision points, and path joins. Which ecosystem project should you use to perform these actions?
Select the answer
1 correct answer
A.
Apache HUE
B.
Apache Zookeeper
C.
Apache Oozie
D.
Apache Spark
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Info quiz:

  • Quiz name:Alibaba-ACA-BigData1
  • Total number of questions:77
  • Number of questions for the test:50
  • Pass score:80%

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