Subtask 5.3: Manage implementation and optimize costs

Your company requires that all data stored in Cloud Storage be encrypted using keys managed by your security team. The security team wants to automatically rotate the keys every 90 days. Which encryption method should you use?

A media company serves terabytes of video content daily to users globally. They are currently serving the videos directly from Cloud Storage buckets in the US, resulting in high network egress costs and high latency for users in Asia and Europe. Which TWO architectural changes should you implement to reduce costs and improve performance? (Select TWO)

A company is running a large fleet of Compute Engine instances for a batch processing workload. The workload is fault-tolerant, can be interrupted, and takes about 4 hours to complete. They want to drastically reduce their compute costs. Which THREE strategies should they combine to achieve the lowest possible cost? (Select THREE)

Your data analytics team is running complex SQL queries on a 100 TB BigQuery table. The queries are scanning the entire table every time, resulting in massive costs. The queries typically filter data by a `transaction_date` column and group results by a `country_code` column. Which TWO BigQuery features should you implement to reduce the amount of data scanned and lower costs? (Select TWO)

A global enterprise has applications deployed in GCP and on-premises. They are analyzing their monthly GCP bill and notice high network egress costs. Which TWO architectural changes would effectively reduce network egress costs? (Select TWO)

Your company generates 1 TB of log data daily. The data must be immediately accessible for analysis for the first 30 days. From day 31 to 365, it is rarely accessed but must be kept for compliance. After 1 year, it must be kept indefinitely for legal reasons but will almost never be read. Which TWO actions should you take to optimize Cloud Storage costs? (Select TWO)