Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
Exhibit
CloudWatch metrics for Lambda function 'image-resize': - Average Duration: 220 ms - P95 Init Duration after idle: 1,400 ms - ConcurrentExecutions: 15 average, 60 during campaign launches - Throttles: 0 - User complaint: first upload after inactivity feels slow
Based on the exhibit, what change best reduces Lambda cold-start impact for a predictable user-upload workflow?
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
Distractor review
Set a reserved concurrency limit for the function to protect it from throttling.
Reserved concurrency protects capacity, but it does not directly remove cold-start latency for the first invocation after idle time.
B
Best answer
Enable provisioned concurrency for the function.
Provisioned concurrency keeps a pre-initialized pool of Lambda execution environments ready to respond immediately. The exhibit shows long init duration after inactivity, which is the classic symptom of cold starts affecting user experience. Because the traffic pattern is predictable during launches, provisioned concurrency is the most direct way to reduce startup latency and smooth response times.
C
Distractor review
Increase the function timeout to give more time for initialization.
A longer timeout does not improve startup speed. It only allows slower executions to continue running longer before failing.
D
Distractor review
Move the function to a larger memory setting only to eliminate all initialization time.
More memory can improve execution speed, but it does not eliminate cold starts or guarantee a warm execution environment.
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.
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Question 2
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Question 5
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FAQ
Questions learners often ask
What does this SAA-C03 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Enable provisioned concurrency for the function. — Provisioned concurrency is the best solution because the problem is not throttling or steady execution time; it is the initialization delay seen after the function has been idle. By keeping Lambda environments ready ahead of time, provisioned concurrency avoids the cold-start penalty and provides more predictable latency for user uploads. This is especially suitable when traffic is known in advance. Why others are wrong: Reserved concurrency controls how many concurrent executions the function can use, but it does not pre-warm environments. Increasing timeout only changes how long Lambda can run, not how quickly it starts. Adding memory may improve runtime performance, but cold starts can still occur and cause the same first-request delay.
What should I do if I get this SAA-C03 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
Discussion
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