- A
Use a multi-region configuration with a write region in the required region
Why wrong: Multi-region replicates data across multiple regions for reads, failing data residency.
- B
Use a multi-region configuration but restrict access to only one region
Why wrong: Multi-region configurations store replicas in multiple regions, violating data residency.
- C
Use a single-region configuration in the required region
Single-region configuration keeps all replicas within one region, satisfying data residency.
- D
Use a dual-region configuration
Why wrong: Dual-region replicates data across two regions, which may not comply with data residency.
Question 671 of 1,000
Cloud Digital Leader Fundamental Cloud Concepts Practice Question
This GCDL practice question tests your understanding of fundamental cloud concepts. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 is required to keep all data within a specific geographic region for regulatory compliance. They plan to deploy a globally distributed application using Cloud Spanner. How should they configure Cloud Spanner to meet this compliance requirement?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a single-region configuration in the required region
Cloud Spanner allows you to choose specific regions for your instance, and replicas are placed only within that region. Multi-region configurations span multiple geographic areas and would violate the data residency requirement. Therefore, a single-region configuration is required.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a multi-region configuration with a write region in the required region
Why it's wrong here
Multi-region replicates data across multiple regions for reads, failing data residency.
- ✗
Use a multi-region configuration but restrict access to only one region
Why it's wrong here
Multi-region configurations store replicas in multiple regions, violating data residency.
- ✓
Use a single-region configuration in the required region
Why this is correct
Single-region configuration keeps all replicas within one region, satisfying data residency.
Related concept
OSPF neighbours must agree on key parameters.
- ✗
Use a dual-region configuration
Why it's wrong here
Dual-region replicates data across two regions, which may not comply with data residency.
Common exam traps
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Detailed technical explanation
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
- OSPF neighbours must agree on key parameters.
- Router ID selection can affect neighbour relationships and LSDB output.
- OSPF cost influences the preferred path.
- A route can appear in OSPF information but not become the installed route.
TExam Day Tips
- Check area mismatch first when OSPF adjacency fails.
- Review passive interfaces when a network is advertised but no neighbour forms.
- Use show ip ospf neighbor and show ip route clues carefully.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related GCDL OSPF questions on adjacency and route selection.
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FAQ
Questions learners often ask
What does this GCDL question test?
Fundamental Cloud Concepts — This question tests Fundamental Cloud Concepts — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: Use a single-region configuration in the required region — Cloud Spanner allows you to choose specific regions for your instance, and replicas are placed only within that region. Multi-region configurations span multiple geographic areas and would violate the data residency requirement. Therefore, a single-region configuration is required.
What should I do if I get this GCDL question wrong?
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related GCDL OSPF questions on adjacency and route selection.
What is the key concept behind this question?
OSPF neighbours must agree on key parameters.
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Last reviewed: Jul 4, 2026
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.
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