Quick Answer
The answer is the Application Load Balancer (ALB). This is correct because an ALB operates at Layer 7 of the OSI model and can intelligently distribute HTTP and HTTPS traffic across multiple SAP application server instances deployed in different Availability Zones, ensuring high availability for SAP NetWeaver. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of how to architect resilient SAP landscapes using native AWS services; a common trap is confusing Route 53’s DNS-based routing with actual load balancing, or assuming Auto Scaling groups handle traffic distribution rather than instance count management. Remember that for SAP application servers, the ALB is the only service that actively balances incoming user requests across AZs, while Route 53 merely directs initial DNS queries. Memory tip: ALB = Application Layer Balancing, meaning it reads the application traffic, not just the network packets.
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.
A company is deploying SAP NetWeaver on AWS and needs to configure the SAP application server instances for high availability. Which AWS feature is used to distribute traffic across multiple application server instances in different Availability Zones?
Auto Scaling group
Why wrong: Manages instance count, not traffic distribution.
Amazon Route 53 weighted routing
Why wrong: DNS-based routing, not real-time load balancing.
Application Load Balancer
ALB distributes traffic across instances in multiple AZs.
NAT Gateway
Why wrong: For outbound internet traffic, not load balancing.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Application Load Balancer
An Application Load Balancer (ALB) can distribute HTTP/HTTPS traffic across multiple targets in different AZs. Option D is correct. Route 53 is a DNS service, not a load balancer. NAT Gateway is for outbound traffic. Auto Scaling groups manage instance count, not traffic distribution.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Auto Scaling group
Why it's wrong here
Manages instance count, not traffic distribution.
Amazon Route 53 weighted routing
Why it's wrong here
DNS-based routing, not real-time load balancing.
Application Load Balancer
Why this is correct
ALB distributes traffic across instances in multiple AZs.
Related concept
Static NAT maps one inside address to one outside address.
NAT Gateway
Why it's wrong here
For outbound internet traffic, not load balancing.
Common exam traps
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.
Detailed technical explanation
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.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PAS-C01 NAT questions on configuration and troubleshooting.
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FAQ
Technology — This question tests Technology — Static NAT maps one inside address to one outside address..
The correct answer is: Application Load Balancer — An Application Load Balancer (ALB) can distribute HTTP/HTTPS traffic across multiple targets in different AZs. Option D is correct. Route 53 is a DNS service, not a load balancer. NAT Gateway is for outbound traffic. Auto Scaling groups manage instance count, not traffic distribution.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PAS-C01 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
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