This PCDOE practice question tests your understanding of implementing service monitoring strategies. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization wants to be alerted when the total size of a Cloud Storage bucket exceeds 1 TB. Which metric should they monitor?
storage.googleapis.com/storage/total_bytes
This metric measures total bucket size.
storage.googleapis.com/storage/object_count
Why wrong: Object count does not indicate size.
storage.googleapis.com/storage/network_sent_bytes
Why wrong: Network egress is not bucket size.
storage.googleapis.com/storage/request_count
Why wrong: Request count is not size.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
storage.googleapis.com/storage/total_bytes
The metric `storage.googleapis.com/storage/total_bytes` directly measures the total amount of data stored in a Cloud Storage bucket, including all object data and metadata. Monitoring this metric allows the organization to set an alert threshold at 1 TB (1,099,511,627,776 bytes) to trigger when the bucket exceeds that size. This is the correct metric for tracking storage capacity usage.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
storage.googleapis.com/storage/total_bytes
Why this is correct
This metric measures total bucket size.
Related concept
Read the scenario before looking for a memorised answer.
storage.googleapis.com/storage/object_count
Why it's wrong here
Object count does not indicate size.
storage.googleapis.com/storage/network_sent_bytes
Why it's wrong here
Network egress is not bucket size.
storage.googleapis.com/storage/request_count
Why it's wrong here
Request count is not size.
Common exam traps
Google Cloud often tests the distinction between metrics that measure capacity (total_bytes) versus metrics that measure activity (object_count, request_count) or throughput (network_sent_bytes), leading candidates to confuse object count with total size.
Detailed technical explanation
The `total_bytes` metric is a gauge-type metric that updates as objects are added, deleted, or overwritten, and it includes all versions of objects if object versioning is enabled. In a real-world scenario, if the bucket uses lifecycle rules to delete old versions, the metric will automatically decrease, but if versioning is on and no cleanup is configured, the total_bytes can grow unexpectedly due to retained noncurrent versions. This metric is available in Google Cloud Monitoring and can be aggregated across buckets using filters for organization-wide alerts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
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FAQ
Implementing service monitoring strategies — This question tests Implementing service monitoring strategies — Read the scenario before looking for a memorised answer..
The correct answer is: storage.googleapis.com/storage/total_bytes — The metric `storage.googleapis.com/storage/total_bytes` directly measures the total amount of data stored in a Cloud Storage bucket, including all object data and metadata. Monitoring this metric allows the organization to set an alert threshold at 1 TB (1,099,511,627,776 bytes) to trigger when the bucket exceeds that size. This is the correct metric for tracking storage capacity usage.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This PCDOE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCDOE exam.
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