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GCDL Practice Question: A cloud architect is explaining to executives why…
This GCDL practice question tests your understanding of a cloud architect is explaining to executives why…. 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 cloud architect is explaining to executives why they should use managed services (like Cloud SQL, Memorystore, Pub/Sub) instead of running self-managed equivalents on VMs (PostgreSQL on VM, Redis on VM, RabbitMQ on VM). Which argument best captures the strategic rationale for preferring managed services?
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
Best answer
Managed services transfer undifferentiated operational complexity (patching, backups, HA, scaling) to Google, freeing engineering teams to focus on differentiated business logic rather than infrastructure management
This is the strategic argument. 'Undifferentiated heavy lifting' — the operational work common to every company running that software — is what managed services absorb. No company's competitive advantage comes from being better at PostgreSQL patch management; it comes from the applications and insights built on top of databases. Managed services free teams for that differentiated work.
B
Distractor review
Managed services guarantee better performance than self-managed deployments in all scenarios
Managed services provide good performance for most workloads but are not universally superior. Expert DBAs can tune self-managed databases for specific workloads to outperform defaults. Performance is not the primary strategic argument.
C
Distractor review
Using managed services eliminates the need for any cloud expertise within the engineering team
Managed services reduce operational expertise requirements for infrastructure management but don't eliminate the need for cloud and architectural expertise. Teams still need to design data models, configure services, manage IAM, and architect system integrations.
D
Distractor review
Managed services are always less expensive than self-managed alternatives on VMs
Managed services often have higher direct cost than equivalent VM deployments. The economic argument is total cost including labor, not just direct service cost. At small scale, self-managed can be cheaper.
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.
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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: Managed services transfer undifferentiated operational complexity (patching, backups, HA, scaling) to Google, freeing engineering teams to focus on differentiated business logic rather than infrastructure management — Managed services embody Google's operational expertise for running that specific software at scale. The thousands of hours Google's engineers invest in operational automation, resilience testing, capacity management, and performance tuning are captured in the managed service. Organizations that self-manage equivalents on VMs must recreate all of that expertise internally — a significant and ongoing investment in undifferentiated work that doesn't directly contribute to their business.
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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