You need to set up permissions for a set of Compute Engine instances to enable them to write data into a particular Cloud Storage bucket. You want to follow

Google-recommended practices. What should you do?

• A. Create a service account with an access scope. Use the access scope 'https://www.googleapis.com/auth/devstorage.write_only'.
• B. Create a service account with an access scope. Use the access scope 'https://www.googleapis.com/auth/cloud-platform'.
• C. Create a service account and add it to the IAM role 'storage.objectCreator' for that bucket.
• D. Create a service account and add it to the IAM role 'storage.objectAdmin' for that bucket.

You need to run an important query in BigQuery but expect it to return a lot of records. You want to find out how much it will cost to run the query. You are using on-demand pricing. What should you do?

• A. Arrange to switch to Flat-Rate pricing for this query, then move back to on-demand.
• B. Use the command line to run a dry run query to estimate the number of bytes read. Then convert that bytes estimate to dollars using the Pricing Calculator.
• C. Use the command line to run a dry run query to estimate the number of bytes returned. Then convert that bytes estimate to dollars using the Pricing Calculator.
• D. Run a select count (*) to get an idea of how many records your query will look through. Then convert that number of rows to dollars using the Pricing Calculator.

🔍 ¿Qué es un dry run?

Un dry run es una validación de consulta en la que BigQuery analiza la consulta y calcula cuántos bytes tendría que leer, pero no ejecuta la consulta ni accede a los datos reales.

You need to set up a policy so that videos stored in a specific Cloud Storage Regional bucket are moved to Coldline after 90 days, and then deleted after one year from their creation. How should you set up the policy?

• A. Use Cloud Storage Object Lifecycle Management using Age conditions with SetStorageClass and Delete actions. Set the SetStorageClass action to 90 days and the Delete action to 275 days (365 ג€" 90)
• B. Use Cloud Storage Object Lifecycle Management using Age conditions with SetStorageClass and Delete actions. Set the SetStorageClass action to 90 days and the Delete action to 365 days.
• C. Use gsutil rewrite and set the Delete action to 275 days (365-90).