Subtask 5.2: Ensure solution and operations reliability

Your company hosts a public-facing web application on GKE behind a Global External HTTP(S) Load Balancer. You notice a sudden spike in traffic originating from a specific country, which is causing performance degradation. The traffic appears to be a Layer 7 DDoS attack. How can you quickly mitigate this?

You have implemented VPC Service Controls to protect your BigQuery datasets. A data scientist working from home needs to query the data using the BigQuery web UI. Their home IP address is dynamic. How can you grant them access without compromising the security perimeter?

Your Site Reliability Engineering (SRE) team has defined a Service Level Objective (SLO) of 99.9% availability for a critical API. Over the last 30 days, the API has experienced several outages, and the error budget has been completely exhausted. According to SRE best practices, what action should the team take?

You want to monitor the CPU utilization of a fleet of Compute Engine instances. If the average CPU utilization exceeds 80% for more than 5 minutes, you want the operations team to receive a notification in their Slack channel. How should you configure this?

You are defining Service Level Indicators (SLIs) for a user-facing e-commerce website. According to Google's SRE practices, which TWO metrics are the most appropriate SLIs for a request-driven web service? (Select TWO)