Alibaba ACA-BigData1 Dumps [2021] Real ACA-BigData1 Exam Questions And Accurate Answers
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ACA-BigData1 Dumps
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ACA-BigData1 Dumps
Get ACA Big Data Certification Exam certified with Alibaba ACA-BigData1 exam dumps and get well prepared with actual ACA-BigData1 exam questions answers. Premium Real ACA-BigData1 Dumps PDF and ACA Big Data Certification Exam practice test engine, Verified questions answers 2021.
, Alibaba
ACA-BIGDATA1 Exam
ACA Big Data Certification
Questions & Answers
Demo
,Questions & Answers PDF Page 2
Version: 4.0
Question: 1
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?
A. set ProjectACL=true;
B. add accountprovider ram;
C. set ProjectProtection=true;
D. use prj1;
Answer: C
Question: 2
Where is the meta data (e.g.,table schemas) in Hive?
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
Answer: C
Question: 3
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?
A. desc t_test
B. alter table t_test add columns (comments string);
C. select count(*) from t_test;
D. truncate table t_test;
,Questions & Answers PDF Page 3
Answer: C
Question: 4
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?
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"
Answer: A
Question: 5
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.
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')
Answer: D
Question: 6
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 ______.
A. URL after the release
B. URL in the preview
C. MD5 code obtained after the release
D. Jar package imported after the release
Answer: A
Question: 7
By integrating live dashboards, DataV can present and monitor business data
, Questions & Answers PDF Page 4
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?
A. Alibaba Cloud' s AnalyticDB, ApsaraDB
B. Static data in CSV and JSON formats
C. Oracle Database
D. MaxCompute Project
Answer: D
Question: 8
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.
A. Just copy them into HDFS using curl
B. Ingest the server web logs into HDFS using Apache Flume
C. Channel these clickstreams into Hadoop using Hadoop Streaming
D. Import all user clicks from your OLTP databases into Hadoop using Sqoop
Answer: B
Question: 9
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?
A. Ingest with Hadoop streaming
B. Ingest using Hive
C. Ingest with sqoop import
D. Ingest with Pig's LOAD command
Answer: C
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