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DEA-C01 - SnowPro Advanced: Data Engineer Certification Exam

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DEA-C01 Questions and Answers

Question # 1

A company built a sales reporting system with Python, connecting to Snowflake using the Python Connector. Based on the user's selections, the system generates the SQL queries needed to fetch the data for the report First it gets the customers that meet the given query parameters (on average 1000 customer records for each report run) and then it loops the customer records sequentially Inside that loop it runs the generated SQL clause for the current customer to get the detailed data for that customer number from the sales data table

When the Data Engineer tested the individual SQL clauses they were fast enough (1 second to get the customers 0 5 second to get the sales data for one customer) but the total runtime of the report is too long

How can this situation be improved?

A.

Increase the size of the virtual warehouse

B.

Increase the number of maximum clusters of the virtual warehouse

C.

Define a clustering key for the sales data table

D.

Rewrite the report to eliminate the use of the loop construct

Question # 2

A Data Engineer is working on a continuous data pipeline which receives data from Amazon Kinesis Firehose and loads the data into a staging table which will later be used in the data transformation process The average file size is 300-500 MB.

The Engineer needs to ensure that Snowpipe is performant while minimizing costs.

How can this be achieved?

A.

Increase the size of the virtual warehouse used by Snowpipe.

B.

Split the files before loading them andset the SIZE_LIMIT option to 250 MB.

C.

Change the file compression size and increase the frequency of the Snowpipe loads

D.

Decrease the buffer size to trigger delivery of files sized between 100 to 250 MB in Kinesis Firehose

Question # 3

A Data Engineer wants to create a new development database (DEV) as a clone of the permanent production database (PROD) There is a requirement to disable Fail-safe for all tables.

Which command will meet these requirements?

A.

CREATE DATABASE DEV

CLONE PROD

FAIL_SAFE=FALSE;

B.

CREATE DATABASE DEV

CLONE PROD;

C.

CREATE TRANSIENT DATABASE DEV

CLONE RPOD

D.

CREATE DATABASE DEV

CLOSE PROD

DATA_RETENTION_TIME_IN_DAYS =0L

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