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Question No. 1

Identify how the count_if function and the count where x is null can be used

Consider a table random_values with below data.

What would be the output of below query?

select count_if(col > 1) as count_

a. count(*) as count_b.count(col1) as count_c from random_values col1

3 6 5

Answer: A

Question No. 2

Identify a scenario to use an external table.

A Data Engineer needs to create a parquet bronze table and wants to ensure that it gets stored in a specific path in an external location.

Which table can be created in this scenario?

A. An external table where the location is pointing to specific path in external location.

B. An external table where the schema has managed location pointing to specific path in external location.

C. A managed table where the catalog has managed location pointing to specific path in external location.

D. A managed table where the location is pointing to specific path in external location.

Answer: A

Question No. 3

Which method should a Data Engineer apply to ensure Workflows are being triggered on schedule?

A. Scheduled Workflows require an always-running cluster, which is more expensive but reduces processing latency.

B. Scheduled Workflows process data as it arrives at configured sources.

C. Scheduled Workflows can reduce resource consumption and expense since the cluster runs only long enough to execute the pipeline.

D. Scheduled Workflows run continuously until manually stopped.

Answer: C

Question No. 4

Identify the impact of ON VIOLATION DROP ROW and ON VIOLATION FAIL UPDATE for a constraint violation.

A data engineer has created an ETL pipeline using Delta Live table to manage their company travel reimbursement detail, they want to ensure that the if the location details has not been provided by the employee, the pipeline needs to be terminated.

How can the scenario be implemented?

A. CONSTRAINT valid_location EXPECT (location = NULL)

B. CONSTRAINT valid_location EXPECT (location != NULL) ON VIOLATION FAIL UPDATE

C. CONSTRAINT valid_location EXPECT (location != NULL) ON DROP ROW

D. CONSTRAINT valid_location EXPECT (location != NULL) ON VIOLATION FAIL

Answer: B

Question No. 5

Which two components function in the DB platform architecture's control plane? (Choose two.)

A. Virtual Machines

B. Compute Orchestration

C. Serverless Compute

D. Compute

E. Unity Catalog

Answer: B, E

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