- A
Attach an Internet Gateway to the VPC
Why wrong: Internet Gateway does not provide encryption.
- B
Configure SSL/TLS certificates on the database and application servers
SSL/TLS encrypts data in transit between tiers.
- C
Restrict security group rules to only allow traffic from the application tier
Security groups can enforce that only encrypted traffic is allowed by limiting source.
- D
Create a VPC Peering connection between the subnets
Why wrong: VPC Peering does not encrypt traffic.
- E
Use network ACLs to allow only database traffic
Why wrong: NACLs are for access control, not encryption.
Question 742 of 1,733
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 is deployed on EC2 instances in a VPC. The security team requires that all traffic between the SAP application and database tiers must be encrypted in transit. Which TWO actions should be taken to meet this requirement? (Choose two.)
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
✓
Configure SSL/TLS certificates on the database and application servers
To encrypt traffic between SAP application and database tiers, configure SSL/TLS certificates on both servers (B). Additionally, restrict security group rules to allow traffic only from the application tier's security group (C) to ensure that only authorized, encrypted connections are permitted. Option A (Internet Gateway) provides internet access, not encryption. Option D (VPC Peering) connects VPCs but does not encrypt traffic. Option E (NACLs) are stateless and do not provide encryption.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Attach an Internet Gateway to the VPC
Why it's wrong here
Internet Gateway does not provide encryption.
- ✓
Configure SSL/TLS certificates on the database and application servers
- ✓
Restrict security group rules to only allow traffic from the application tier
Why this is correct
Security groups can enforce that only encrypted traffic is allowed by limiting source.
Related concept
CIDR notation defines the prefix length.
- ✗
Create a VPC Peering connection between the subnets
Why it's wrong here
VPC Peering does not encrypt traffic.
- ✗
Use network ACLs to allow only database traffic
Why it's wrong here
NACLs are for access control, not encryption.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PAS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Technology — This question tests Technology — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Configure SSL/TLS certificates on the database and application servers — To encrypt traffic between SAP application and database tiers, configure SSL/TLS certificates on both servers (B). Additionally, restrict security group rules to allow traffic only from the application tier's security group (C) to ensure that only authorized, encrypted connections are permitted. Option A (Internet Gateway) provides internet access, not encryption. Option D (VPC Peering) connects VPCs but does not encrypt traffic. Option E (NACLs) are stateless and do not provide encryption.
What should I do if I get this PAS-C01 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PAS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Last reviewed: Jun 20, 2026
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