Choose the different ways that you have to optimize query performance

Snowflake includes administration settings for resource consumption in order to

An Architect uses COPY INTO with the ON_ERROR=SKIP_FILE option to bulk load CSV files into a table called TABLEA, using its table stage. One file named file5.csv fails to load. The Architect fixes the file and re-loads it to the stage with the exact same file name it had previously.
Which commands should the Architect use to load only file5.csv file from the stage? (Choose two.)

For the best performance while loading data into table from a stage, you should avoid applying patterns that filter on a large number of files.

How will you drop a cluster key?