SAP-C02 Continuous Improvement for Existing Solutions Practice Question
Network Topology
A developer notices that CloudWatch Logs for a Lambda function show no logs after a recent deployment. The function is invoked successfully. What is the most likely cause?
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
✓
The Lambda execution role does not have permissions to write to CloudWatch Logs.
If the Lambda execution role lacks logs:CreateLogGroup and logs:PutLogEvents permissions, Lambda cannot write logs. Option A is wrong because the log group exists but has 0 stored bytes. Option C is wrong because retention policy doesn't prevent new logs. Option D is wrong because the log group exists.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The Lambda function is exceeding the CloudWatch Logs API rate limits.
Why it's wrong here
Rate limits would cause throttling, not complete absence of logs.
- ✓
The Lambda execution role does not have permissions to write to CloudWatch Logs.
Why this is correct
Without proper IAM permissions, Lambda cannot create log streams or write logs.
- ✗
The log group retention policy is set to 7 days, which expired old logs.
Why it's wrong here
The log group shows 0 stored bytes, meaning no logs were written.
- ✗
The log group was deleted and not recreated.
Why it's wrong here
The log group exists as shown in the exhibit.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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