Google PCA Practice Question: Managing and Provisioning a Solution Infrastructure
This PCA practice question tests your understanding of managing and provisioning a solution infrastructure. 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 company is migrating a legacy application that uses a file server to GCP. The application requires a shared file system that supports the NFS protocol and can be mounted by multiple Compute Engine instances. The team also needs to use Cloud NAT to allow the instances to download updates. Which TWO services should they use? (Choose 2)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Cloud NAT
Filestore provides NFS file shares, and Cloud NAT allows instances without public IPs to access the internet for updates.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Cloud NAT
Why this is correct
Cloud NAT enables outbound internet access for private instances.
Related concept
Static NAT maps one inside address to one outside address.
✗
Cloud VPN
Why it's wrong here
Cloud VPN connects on-premises to GCP, not needed here.
✗
Cloud Storage Fuse
Why it's wrong here
Cloud Storage Fuse mounts Cloud Storage buckets as file systems, but it is not NFS.
✓
Cloud Filestore
Why this is correct
Filestore is a managed NFS file server.
Related concept
Static NAT maps one inside address to one outside address.
✗
Private Google Access
Why it's wrong here
Private Google Access allows access to Google APIs, not general internet.
Common exam traps
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.
Detailed technical explanation
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.
Real-world example
How this comes up in practice
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
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 PCA NAT questions on configuration and troubleshooting.
Managing and Provisioning a Solution Infrastructure — This question tests Managing and Provisioning a Solution Infrastructure — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Cloud NAT — Filestore provides NFS file shares, and Cloud NAT allows instances without public IPs to access the internet for updates.
What should I do if I get this PCA 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 PCA NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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