The answer is to enable the cache feature in CodeBuild to store dependencies in Amazon S3 and use a custom Docker image with pre-installed dependencies. These two actions directly address the root cause of slow builds by eliminating the need to download dependencies from the internet on every run. Caching stores resolved dependency files in a persistent S3 bucket, so subsequent builds retrieve them locally, while a custom Docker image bakes dependencies directly into the build environment, avoiding repeated downloads entirely. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of optimizing build pipelines for speed and cost efficiency—a common trap is choosing to increase compute resources, which masks the symptom without fixing the dependency download bottleneck. Remember the memory tip: “Cache the cache, bake the base”—cache your dependency folder in S3 and bake dependencies into your Docker base image for the fastest builds.
SAP-C02 Continuous Improvement for Existing Solutions Practice Question
This SAP-C02 practice question tests your understanding of continuous improvement for existing solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 uses AWS CodeBuild to compile and test code. The build process takes a long time because dependencies are downloaded from the internet each time. The company wants to speed up the build process. Which TWO actions should the company take? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a custom Docker image in CodeBuild that includes the dependencies
Option A avoids downloading dependencies on every build by using a custom Docker image with pre-installed dependencies. Option B caches dependency files in a persistent S3 bucket. Option C (increase compute) may help but does not address the root cause. Option D (parallel builds) may increase complexity. Option E (CodeArtifact) is for storing artifacts but does not speed up initial download as much as caching.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 AWS CodeArtifact to store and retrieve dependencies
Why it's wrong here
While useful, it still requires download; caching is more direct.
✓
Use a custom Docker image in CodeBuild that includes the dependencies
Read the scenario before looking for a memorised answer.
✗
Use local build agents to run builds in parallel
Why it's wrong here
Parallel builds do not reduce the time of a single build.
✗
Increase the compute type of the build environment
Why it's wrong here
Faster CPU does not reduce dependency download time significantly.
✓
Enable the cache feature in CodeBuild to store dependencies in Amazon S3
Why this is correct
Cached dependencies are reused on subsequent builds.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
What to study next
Got this wrong? Here's your next step.
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use a custom Docker image in CodeBuild that includes the dependencies — Option A avoids downloading dependencies on every build by using a custom Docker image with pre-installed dependencies. Option B caches dependency files in a persistent S3 bucket. Option C (increase compute) may help but does not address the root cause. Option D (parallel builds) may increase complexity. Option E (CodeArtifact) is for storing artifacts but does not speed up initial download as much as caching.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company uses AWS CodeBuild to run unit tests. The build process is taking longer than expected. The buildspec.yml file includes a pre-build phase that downloads dependencies from a public repository. What is the most effective way to reduce build time?
hard
✓ A.Configure the build project to use an S3 cache for dependencies.
B.Run the build in parallel across multiple build projects.
C.Increase the compute type of the build environment to use more vCPUs.
D.Reduce the build timeout setting to force faster execution.
Why A: Option B is correct because caching dependencies in S3 avoids re-downloading them each build. Option A is wrong because increasing compute resources may not help if the bottleneck is network bandwidth. Option C is wrong because parallel builds are for multiple builds, not a single build. Option D is wrong because CodeBuild doesn't have a build timeout setting that reduces build time; it's a limit.
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This SAP-C02 practice question is part of Courseiva's free Amazon Web Services 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 SAP-C02 exam.
Question Discussion
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