A Transportation Company Uses IoT Sensors Attached to Trucks to Collect

question 47

Multiple Choice

A transportation company uses IoT sensors attached to trucks to collect vehicle data for its global delivery fleet. The company currently sends the sensor data in small .csv files to Amazon S3. The files are then loaded into a 10-node Amazon Redshift cluster with two slices per node and queried using both Amazon Athena and Amazon Redshift. The company wants to optimize the files to reduce the cost of querying and also improve the speed of data loading into the Amazon Redshift cluster. Which solution meets these requirements?

• A) Use AWS Glue to convert all the files from .csv to a single large Apache Parquet file. COPY the file into Amazon Redshift and query the file with Athena from Amazon S3.
• B) Use Amazon EMR to convert each .csv file to Apache Avro. COPY the files into Amazon Redshift and query the file with Athena from Amazon S3.
• C) Use AWS Glue to convert the files from .csv to a single large Apache ORC file. COPY the file into Amazon Redshift and query the file with Athena from Amazon S3.
• D) Use AWS Glue to convert the files from .csv to Apache Parquet to create 20 Parquet files. COPY the files into Amazon Redshift and query the files with Athena from Amazon S3.

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Definitions:

Pale Skin

A lighter or whiter appearance of the skin than is normal for an individual, which can be a sign of illness, stress, or exposure to cold.

Absence of Pulse

An indication that the heart is not effectively pumping blood, a critical sign of cardiac arrest or death.

Bone Demineralization

The loss of minerals from the bone, leading to weakened bone structure and increased risk of fractures.

Osteoporosis

A medical condition characterized by the weakening of bones, making them fragile and more likely to break.