GCP Professional Cloud Architect Practice Question

A financial-services firm runs a latency-sensitive trading-analytics pipeline that streams data through Pub/Sub → Dataflow → BigQuery. Overnight, the FinOps budget alert shows BigQuery querying charges have quadrupled and Dataflow network-egress costs have spiked. The on-call architect wants to use Gemini Cloud Assist to diagnose the surge quickly and obtain actionable cost-saving recommendations while avoiding disruptive changes to live jobs. Which approach best uses Gemini Cloud Assist to achieve these goals?

Export relevant Cloud Logging entries for the affected Pub/Sub, Dataflow, and BigQuery resources during the incident window and ask Gemini Cloud Assist to correlate the anomalies and propose cost-optimization actions.
Use Gemini Application Design Center to regenerate the entire pipeline as Terraform and redeploy it so configuration errors become apparent.
Ask Gemini to create a Looker Studio dashboard showing daily spend and then manually inspect the charts to locate anomalous services.
Run gcloud beta billing reports generate-forecast, pass the resulting billing SKU forecast to Gemini, and request a summary of excessive spend drivers.

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Answer Description

Supplying Gemini Cloud Assist with focused Cloud Logging exports-such as Dataflow job logs, Pub/Sub delivery logs, and BigQuery audit logs-from the exact period of the cost spike gives the tool the telemetry it can parse. Gemini Cloud Assist analyzes log text to correlate the surge: a burst of upstream Pub/Sub messages forced Dataflow to autoscale aggressively, which in turn drove a large volume of costly BigQuery querying operations. Armed with this insight, Gemini can recommend non-disruptive remediations like introducing a staging Cloud Storage bucket for batch loads and tightening Dataflow autoscaling limits. The other approaches either provide only billing summaries, attempt a full redeployment, or rely on manual dashboard inspection-none leverage Gemini's log-based root-cause analysis and optimization capabilities as effectively.

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