Free Snowflake DEA-C01 Exam Questions

Become Snowflake Certified with updated DEA-C01 exam questions and correct answers

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Total 240 Questions | Updated On: Apr 01, 2022

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Question 1

Data Engineer wants to analyze query performance & looking out for profiling information, He went to Query/Operator Details also called Profile Overview of Query Profile Interface & searching for statistics attributes around I/O. Which of the following information he can’t get from there?

A : Percentage scanned from cache — the percentage of data scanned from the local disk cache.

B : Bytes written — bytes written (e.g. when loading into a table).

C : External bytes scanned — bytes read from an external object, e.g. a stage.

D : Bytes sent over the wireframe — amount of data sent over the wireframe

E : Bytes read from result — bytes read from the result object.

Answer: D

Question 2

Which of the below techniques leverages performance efficiencies by enabling large and complex Spark logical plans (in their entirety or in parts) to be processed in Snowflake, thus using Snowflake to do most of the actual work.

A : Query Pushdown

B : Query Optimization

C : Query Plan Pushdown

Answer: A

Question 3

To troubleshoot data load failure in one of your Copy Statement, Data Engineer have Executed a COPY statement with the VALIDATION_MODE copy option set to RETURN_ALL_ERRORS with reference to the set of files he had attempted to load. Which below function can facilitate analysis of the problematic records on top of the Results produced? [Select 2]

A : RESULT_SCAN

B : LAST_QUERY_ID

C : Rejected_record

D : LOAD_ERROR

Answer: A,B

Question 4

Data Engineer is using existing pipe that automates data loads using event notifications, later he figured out

the needs to modify pipe properties. For the same, He decided to recreate the pipe as best practice. He

followed the below steps for the same.

1. Query the SYSTEM$PIPE_STATUS function and verify that the pipe execution state is RUN-NING.

2. Recreate the pipe (using CREATE OR REPLACE PIPE).

3. Query the SYSTEM$PIPE_STATUS function and verify that the pipe execution state is RUN-NING.

Which are the Missing recommended steps while Recreating Pipes for Automated Data Loads?

A : CREATE OR REPLACE PIPE command will recreate the PIPE successfully.

B : Terminate the existing pipe (using ALTER PIPE … SET PIPE_EXECUTION_TERMINATE = true) before recreation

C : Pause the pipe (using ALTER PIPE … SET PIPE_EXECUTION_PAUSED = true) Pre & Post recreation & Resume after recreation (using ALTER PIPE … SET PIPE_EXECUTION_PAUSED = false).

D : Force the pipe to resume (using SYSTEM$PIPE_FORCE_RESUME).

Answer: C

Question 5

The employee project details has the project names as array against each employee as shown below

Which of the query below will convert the array into individual rows?

A : select emp_id, emp_name, p.value::string as project_names from employee_project_details,table(flatten(employee_project_details.project_names)) p ;

B : select emp_id, emp_name, p.value::string as project_names from employee_project_details,lateral(flatten(employee_project_details.project_names)) p ;

C : select emp_id, emp_name, p.value::string as project_names from employee_project_details,lateral flatten(employee_project_details.project_names)) p

Answer: A

Page: 1 / 48

Total 240 Questions | Updated On: Apr 01, 2022

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