← PAS-C01·Amazon Web Services

Question 1,585 of 1,733

Technology →easyMultiple ChoiceObjective-mapped

PAS-C01 Technology Practice Question

This PAS-C01 practice question tests your understanding of technology. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 intermittent network connectivity issues between the application server and the database server. Both servers are in the same VPC but in different Availability Zones. The network ACLs and security groups are properly configured. What is the most likely cause and solution?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

A
The security groups are stateful and blocking return traffic; use network ACLs instead
Why wrong: Security groups are stateful and allow return traffic automatically.
B
The route tables are not correctly configured for cross-AZ traffic; verify and update route tables
Cross-AZ traffic requires appropriate route table entries.
C
Use AWS Transit Gateway to connect the subnets in different AZs
Why wrong: Transit Gateway is for connecting multiple VPCs, not subnets within a VPC.
D
The network ACLs are blocking traffic between Availability Zones; update the NACLs
Why wrong: NACLs are stateless but if properly configured, they should allow traffic.

Full breakdown with real-world context →

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 route tables are not correctly configured for cross-AZ traffic; verify and update route tables

The most likely cause is that the route tables in the subnets do not have routes for the destination CIDR of the other Availability Zone (AZ). By default, each subnet in a VPC is associated with a route table, and for traffic to flow between subnets in different AZs, the route tables must include a local route for the VPC CIDR. If the route tables are misconfigured (e.g., missing the local route or pointing to an incorrect target), cross-AZ traffic will fail, causing intermittent connectivity issues between the application and database servers.

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.

✗
The security groups are stateful and blocking return traffic; use network ACLs instead
Why it's wrong here
Security groups are stateful and allow return traffic automatically.
✓
The route tables are not correctly configured for cross-AZ traffic; verify and update route tables
Why this is correct
Cross-AZ traffic requires appropriate route table entries.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use AWS Transit Gateway to connect the subnets in different AZs
Why it's wrong here
Transit Gateway is for connecting multiple VPCs, not subnets within a VPC.
✗
The network ACLs are blocking traffic between Availability Zones; update the NACLs
Why it's wrong here
NACLs are stateless but if properly configured, they should allow traffic.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often assume security groups or NACLs are the cause of cross-AZ connectivity issues, but the real culprit is usually route table misconfiguration, as AWS relies on the local route for all intra-VPC traffic regardless of AZ boundaries.

Detailed technical explanation

How to think about this question

In a VPC, the main route table or custom route tables must contain a local route (destination: VPC CIDR, target: local) for all subnets to communicate within the VPC. If a subnet’s route table is misconfigured (e.g., missing the local route or having a conflicting route), traffic to the other AZ’s subnet will be dropped. Intermittent issues can occur if the route table is updated dynamically (e.g., via a route propagation change) or if the application server’s subnet uses a different route table than expected. AWS VPC flow logs can be used to confirm dropped packets due to missing routes.

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.

Visual reference

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Related PAS-C01 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Design of SAP Workloads on AWS practice questions

Practise PAS-C01 questions linked to Design of SAP Workloads on AWS.

Technology practice questions

Practise PAS-C01 questions linked to Technology.

Migration practice questions

Practise PAS-C01 questions linked to Migration.

Operations and Maintenance practice questions

Practise PAS-C01 questions linked to Operations and Maintenance.

PAS-C01 fundamentals practice questions

Practise PAS-C01 questions linked to PAS-C01 fundamentals.

PAS-C01 scenario practice questions

Practise PAS-C01 questions linked to PAS-C01 scenario.

PAS-C01 troubleshooting practice questions

Practise PAS-C01 questions linked to PAS-C01 troubleshooting.

Practice this exam

Start a free PAS-C01 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

PAS-C01 practice-test guide →Study guide →Browse all practice tests

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: The route tables are not correctly configured for cross-AZ traffic; verify and update route tables — The most likely cause is that the route tables in the subnets do not have routes for the destination CIDR of the other Availability Zone (AZ). By default, each subnet in a VPC is associated with a route table, and for traffic to flow between subnets in different AZs, the route tables must include a local route for the VPC CIDR. If the route tables are misconfigured (e.g., missing the local route or pointing to an incorrect target), cross-AZ traffic will fail, causing intermittent connectivity issues between the application and database servers.

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.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

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 →

How Courseiva writes practice questions · Editorial policy

Keep practising

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

This PAS-C01 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 PAS-C01 exam.