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GCDL Practice Question: A financial services company needs a managed data…
This GCDL practice question tests your understanding of a financial services company needs a managed data…. 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.
A financial services company needs a managed data warehouse that can ingest streaming transaction data in real time AND support complex SQL analytics across years of historical data — all without managing any infrastructure. Which Google Cloud product meets both streaming ingest and analytical query requirements in a single serverless service?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Cloud SQL with read replicas — one instance for streaming writes, read replicas for analytical queries
Cloud SQL is a transactional OLTP database, not a data warehouse. It doesn't scale to petabytes of analytical data and its streaming ingest is limited by transactional throughput constraints. It's not designed for the analytical query complexity described.
B
Distractor review
Cloud Dataflow running continuously to process the stream and load to Persistent Disk for SQL queries
Dataflow processes streams but writes to sinks (BigQuery, Bigtable, GCS). Persistent Disk doesn't support SQL analytics. This description conflates stream processing with storage and analytics — BigQuery handles all three layers.
C
Distractor review
Cloud Bigtable for streaming ingest and BigQuery for historical analytics — two separate services
While this combination works technically, it introduces data synchronization complexity and separate management overhead. The question asks for a single service meeting both requirements, which BigQuery does natively.
D
Best answer
BigQuery, which supports real-time streaming ingest via its Storage Write API and large-scale analytical SQL queries across petabytes of data in a single fully managed, serverless service
BigQuery meets both requirements natively. The Storage Write API (and legacy streaming API) enables sub-minute data availability for analytics. BigQuery's distributed query engine handles analytical SQL across petabytes. No infrastructure to manage, no separate streaming and analytical systems to maintain.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Related practice questions
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More questions from this exam
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Question 1
A traditional retailer currently maintains its own data centers, purchasing servers every 3–5 years and paying for facilities, power, and staff regardless of demand. When it migrates its workloads to the public cloud, which change in cost model does it experience?
Question 2
An e-commerce company plans its infrastructure for peak shopping events (e.g., Black Friday) which drive 50× normal traffic. On-premises, they must maintain 50× capacity year-round. In the cloud, they provision 50× capacity only during peak periods. Which cloud characteristic enables this cost optimization?
Question 3
Which term describes the process by which organizations integrate digital technology into all areas of their business, fundamentally changing how they operate and deliver value to customers?
Question 4
When a company moves from maintaining its own data center to using Google Cloud, which operational responsibility does Google assume that the company previously managed?
Question 5
A hospital runs a patient records system that must remain on-premises due to strict regulatory data residency requirements. However, they also want to use cloud-based AI for diagnostic imaging analysis. Which cloud deployment model best describes their architecture?
Question 6
What is virtualization in the context of cloud computing, and why is it fundamental to how cloud providers deliver services?
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FAQ
Questions learners often ask
What does this GCDL question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: BigQuery, which supports real-time streaming ingest via its Storage Write API and large-scale analytical SQL queries across petabytes of data in a single fully managed, serverless service — BigQuery supports both streaming inserts (real-time data ingest via the BigQuery Storage Write API or legacy streaming API) and large-scale analytical SQL queries across petabytes of historical data — all in a single serverless, fully managed service. This combination of streaming ingest and analytical querying in one managed service without separate infrastructure makes BigQuery uniquely suited for this requirement.
What should I do if I get this GCDL question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related GCDL NAT questions on configuration and troubleshooting.
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This GCDL 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 GCDL exam.