- A
Monitor the EC2 instance CPU and memory utilization using Amazon CloudWatch metrics.
High CPU/memory can cause latency.
- B
Check AWS Config rules for any non-compliant resources.
Why wrong: Config rules are for compliance, not performance diagnostics.
- C
Use Amazon CloudWatch detailed monitoring to get 1-minute metrics for EC2 instances.
Detailed monitoring provides more granular data for analysis.
- D
Enable and analyze the Application Load Balancer access logs to identify slow requests.
Access logs show request latency per target.
- E
Review VPC Flow Logs to check for packet loss or throttling.
Why wrong: Flow logs show network traffic, not application latency.
Question 138 of 1,733
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
An SAP system running on AWS is experiencing high latency in the application layer. The system uses a load balancer to distribute traffic across multiple EC2 instances. Which THREE actions could help diagnose the latency issue? (Choose THREE.)
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
✓
Monitor the EC2 instance CPU and memory utilization using Amazon CloudWatch metrics.
Option A is correct because high application-layer latency in an SAP system on AWS can stem from insufficient CPU or memory resources on the EC2 instances. Amazon CloudWatch metrics for CPU utilization and memory utilization (via the CloudWatch agent) directly reveal whether the instances are resource-constrained, which is a common cause of slow request processing. Monitoring these metrics helps isolate whether the latency is due to compute bottlenecks rather than network or load balancer issues.
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.
- ✓
Monitor the EC2 instance CPU and memory utilization using Amazon CloudWatch metrics.
Why this is correct
High CPU/memory can cause latency.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Check AWS Config rules for any non-compliant resources.
Why it's wrong here
Config rules are for compliance, not performance diagnostics.
- ✓
Use Amazon CloudWatch detailed monitoring to get 1-minute metrics for EC2 instances.
Why this is correct
Detailed monitoring provides more granular data for analysis.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Enable and analyze the Application Load Balancer access logs to identify slow requests.
Why this is correct
Access logs show request latency per target.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Review VPC Flow Logs to check for packet loss or throttling.
Why it's wrong here
Flow logs show network traffic, not application latency.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse VPC Flow Logs (which show network metadata) with tools that measure actual packet loss or throttling, but Flow Logs only record whether packets were accepted or rejected by security groups/NACLs, not performance metrics like latency or throughput.
Trap categories for this question
Command / output trap
Flow logs show network traffic, not application latency.
Detailed technical explanation
How to think about this question
Detailed monitoring (Option C) provides 1-minute metrics instead of the default 5-minute period, enabling faster detection of CPU spikes or memory pressure that correlate with latency events. Application Load Balancer access logs (Option D) include the `request_processing_time`, `target_processing_time`, and `response_processing_time` fields, which pinpoint whether the delay occurs at the load balancer, the target EC2 instance, or the network between them. In an SAP environment, where transaction processing is sensitive to compute delays, combining these metrics with detailed monitoring allows precise root-cause analysis.
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.
TExam Day Tips
- 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 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.
Quick reference
OSI Model Reference
| Layer | Name | PDU | Key Protocols / Devices |
|---|---|---|---|
| 7 | Application | Data | HTTP, HTTPS, DNS, SMTP, FTP, SSH |
| 6 | Presentation | Data | TLS / SSL, JPEG, ASCII encoding |
| 5 | Session | Data | NetBIOS, RPC, SIP |
| 4 | Transport | Segment / Datagram | TCP, UDP |
| 3 | Network | Packet | IP, ICMP, OSPF — Routers |
| 2 | Data Link | Frame | Ethernet, Wi-Fi, PPP — Switches, Bridges |
| 1 | Physical | Bits | Cables, NICs, Hubs, Repeaters |
What to study next
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Technology — This question tests Technology — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Monitor the EC2 instance CPU and memory utilization using Amazon CloudWatch metrics. — Option A is correct because high application-layer latency in an SAP system on AWS can stem from insufficient CPU or memory resources on the EC2 instances. Amazon CloudWatch metrics for CPU utilization and memory utilization (via the CloudWatch agent) directly reveal whether the instances are resource-constrained, which is a common cause of slow request processing. Monitoring these metrics helps isolate whether the latency is due to compute bottlenecks rather than network or load balancer issues.
What should I do if I get this PAS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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