A Company Has Collected More Than 100 TB of Log

question 20

Multiple Choice

A company has collected more than 100 TB of log files in the last 24 months. The files are stored as raw text in a dedicated Amazon S3 bucket. Each object has a key of the form year-month-day_log_HHmmss.txt where HHmmss represents the time the log file was initially created. A table was created in Amazon Athena that points to the S3 bucket. One-time queries are run against a subset of columns in the table several times an hour. A data analyst must make changes to reduce the cost of running these queries. Management wants a solution with minimal maintenance overhead. Which combination of steps should the data analyst take to meet these requirements? (Choose three.)

• A) Convert the log files to Apace Avro format.
• B) Add a key prefix of the form date=year-month-day/ to the S3 objects to partition the data.
• C) Convert the log files to Apache Parquet format.
• D) Add a key prefix of the form year-month-day/ to the S3 objects to partition the data.
• E) Drop and recreate the table with the PARTITIONED BY clause. Run the ALTER TABLE ADD PARTITION statement.
• F) Drop and recreate the table with the PARTITIONED BY clause. Run the MSCK REPAIR TABLE statement.

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Definitions:

Implicit Costs

Implicit costs, also known as imputed or opportunity costs, are the costs of resources owned by the firm that are used in its own production process.

Explicit Costs

Direct, out-of-pocket payments for wages, rent, materials, and other inputs in the production process.

Opportunity Costs

The value of the best alternative foregone when a decision is made to pursue a particular action, essentially the cost of choosing one option over another.

Implicit Costs

The opportunity costs of using resources owned by the firm for its own production, instead of earning income elsewhere.