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Google Cloud Products and Services →hardMultiple ChoiceObjective-mapped

Cloud Digital Leader Google Cloud Products and Services Practice Question

This GCDL practice question tests your understanding of google cloud products and services. 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 wants to migrate its on-premises Oracle database to Google Cloud. They need PostgreSQL compatibility with high performance for transaction processing and built-in support for AI-driven optimisations. Which database service should they choose?

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

✓

AlloyDB

AlloyDB is a PostgreSQL-compatible database with 4x faster transaction processing than standard PostgreSQL and AI-powered features for performance optimization.

Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

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 Spanner

    Why it's wrong here

    Spanner is relational but not PostgreSQL-compatible; it uses its own SQL dialect.

  • ✗

    Bigtable

    Why it's wrong here

    Bigtable is NoSQL, not relational or PostgreSQL-compatible.

  • ✗

    Cloud SQL for PostgreSQL

    Why it's wrong here

    Cloud SQL is standard PostgreSQL, without AI optimisations, and limited in performance compared to AlloyDB.

  • ✓

    AlloyDB

    Why this is correct

    AlloyDB is PostgreSQL-compatible, offers high performance, and includes AI-driven optimisations like adaptive caching.

    Related concept

    Standard ACLs match source addresses.

Common exam traps

Common exam trap: ACLs stop at the first match

ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.

Detailed technical explanation

How to think about this question

ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.

KKey Concepts to Remember

  • Standard ACLs match source addresses.
  • Extended ACLs can match source, destination, protocol and ports.
  • The first matching ACL entry is used.
  • There is usually an implicit deny at the end.

TExam Day Tips

  • Check inbound versus outbound direction.
  • Read the ACL from top to bottom.
  • Look for a broader permit or deny above the intended line.

Key takeaway

ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

Real-world example

How this comes up in practice

A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.

What to study next

Got this wrong? Here's your next step.

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related GCDL ACL questions on filtering logic and placement.

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FAQ

Questions learners often ask

What does this GCDL question test?

Google Cloud Products and Services — This question tests Google Cloud Products and Services — Standard ACLs match source addresses..

What is the correct answer to this question?

The correct answer is: AlloyDB — AlloyDB is a PostgreSQL-compatible database with 4x faster transaction processing than standard PostgreSQL and AI-powered features for performance optimization.

What should I do if I get this GCDL question wrong?

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related GCDL ACL questions on filtering logic and placement.

What is the key concept behind this question?

Standard ACLs match source addresses.

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Last reviewed: Jul 4, 2026

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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.