Free DEA-C01 Exam Questions - Easiest Way for Success

Prepare for the Snowflake DEA-C01 exam questions with our authentic preparation materials, including free DEA-C01 practice exam questions and answers. TheExamsLab provides all the support you need to succeed in the SnowPro Advanced Data Engineer Certification DEA-C01 exam. This dedication to student success is why we have the most satisfied DEA-C01 certification exam candidates worldwide.

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Total 240 Questions | Updated On: Sep 13, 2024

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Question 1

Putting a higher cardinality column before a lower cardinality column will generally reduce the effectiveness of clustering on the later column

A : TRUE

B : FALSE

Answer: A

Question 2

For the most efficient and cost-effective Data load experience, Data Engineer needs to inconsider-ate which of the following considerations?

A : Split larger files into a greater number of smaller files, maximize the processing over-head for each file.

B : Enabling the STRIP_OUTER_ARRAY file format option for the COPY INTO < ta-ble > command to remove the outer array structure and load the records into separate table rows.

C : Amazon Kinesis Firehose can be convenient way to aggregate and batch data files which also allows defining both the desired file size, called the buffer size, and the wait interval after which a new file is sent, called the buffer interval.

D : When preparing your delimited text (CSV) files for loading, the number of columns in each row should be consistent.

E : if the “null” values in your files indicate missing values and have no other special mean-ing, Snowflake recommend setting the file format option STRIP_NULL_VALUES to TRUE when loading the semi-structured data file.

Answer: A

Question 3

When using the CURRENT_ROLE and CURRENT_USER functions with secure views that will be shared to other Snowflake accounts, Snowflake returns a NULL value for these functions?

A : FALSE

B : TRUE

Answer: B

Question 4

Which of the below query will be used to identify the long running queries in the last 1 hour?

A : select * from table(information_schema.query_history(dateadd('hours',-1,current_timestamp()),current_timestamp())) order by total_elapsed_time

B : select * from information_schema.query_history where execution_time

C : select * from my_database.my_schema.query_history where execution_time

Answer: A

Question 5

As part of Table Designing, Data Engineer added a timestamp column that inserts the current timestamp as the default value as records are loaded into a table. The intent is to capture the time when eachrecord was loaded into the table; however, the timestamps are earlier than the LOAD_TIME column values returned by COPY_HISTORY view (Account Usage). What could be reason of this issue?

A : LOAD_TIME column values returned by COPY_HISTORY view (Account Usage) gives the same time as returned by CURRENT_TIMESTAMP.

B : CURRENT_TIMESTAMP values might be different due to query gets executed in warehouse located in different region.

C : It might be possible that Cloud Provider hosted on Snowflake belongs to region having server time zone lagging Cluster time zone of warehouse where queries get processed & committed.

D : The reason is, CURRENT_TIMESTAMP is evaluated when the load operation is com-piled in cloud services rather than when the record is inserted into the table (i.e. when the transaction for the load operation is committed)

Answer: D

Page: 1 / 48

Total 240 Questions | Updated On: Sep 13, 2024

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