- A
Use a DNS failover record with manual update
Why wrong: Manual update is not automatic.
- B
Use a Network Load Balancer with static IP addresses
Why wrong: ELB alone cannot handle failover without health checks.
- C
Use an Application Load Balancer with health checks and Route 53 failover routing
Provides automatic failover across AZs.
- D
Deploy a single EC2 instance in one Availability Zone
Why wrong: Single instance does not provide high availability.
Question 1,108 of 1,733
PAS-C01 Application Load Balancer Practice Question
This PAS-C01 practice question tests your understanding of operations and maintenance. 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. A key principle to apply: application Load Balancer. 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 administrator needs to ensure that a critical SAP system on AWS is highly available with automatic failover across Availability Zones. The system uses an SAP HANA database with replication. Which configuration meets these requirements with minimal operational overhead?
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
✓
Use an Application Load Balancer with health checks and Route 53 failover routing
Option C is correct because using an Application Load Balancer with health checks and Route 53 failover routing provides automatic failover across Availability Zones with minimal operational overhead. Option A is incorrect because a DNS failover record with manual update requires human intervention and is not automatic. Option B is incorrect because a Network Load Balancer with static IP addresses does not inherently provide cross-AZ failover; Route 53 health checks and routing policies are still needed for failover. Option D is incorrect because a single EC2 instance in one Availability Zone is a single point of failure and provides no high availability.
Key principle: Application Load Balancer
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a DNS failover record with manual update
Why it's wrong here
Manual update is not automatic.
- ✗
Use a Network Load Balancer with static IP addresses
Why it's wrong here
ELB alone cannot handle failover without health checks.
- ✓
Use an Application Load Balancer with health checks and Route 53 failover routing
Why this is correct
Provides automatic failover across AZs.
Related concept
Application Load Balancer
- ✗
Deploy a single EC2 instance in one Availability Zone
Why it's wrong here
Single instance does not provide high availability.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Application Load Balancer
- Route 53 failover routing
- High Availability
- Health checks
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
Application Load Balancer
Real-world example
How this comes up in practice
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.
Visual reference
Quick reference
Common DNS Record Types
| Record | Purpose | Example |
|---|---|---|
| A | IPv4 address mapping | example.com → 93.184.216.34 |
| AAAA | IPv6 address mapping | example.com → 2606:2800::1 |
| CNAME | Alias to another hostname | www → example.com |
| MX | Mail server for domain | example.com → mail.example.com (priority 10) |
| TXT | Text data (SPF, DKIM, verification) | v=spf1 include:_spf.example.com ~all |
| NS | Authoritative name servers | example.com NS ns1.example.com |
| PTR | Reverse DNS (IP → hostname) | 34.216.184.93.in-addr.arpa → example.com |
| SOA | Zone authority record | Primary NS, admin email, serial, TTL defaults |
What to study next
Got this wrong? Here's your next step.
Review application Load Balancer, then practise related PAS-C01 questions on the same topic to reinforce the concept.
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Operations and Maintenance — study guide chapter
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Operations and Maintenance practice questions
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Operations and Maintenance — This question tests Operations and Maintenance — Application Load Balancer.
What is the correct answer to this question?
The correct answer is: Use an Application Load Balancer with health checks and Route 53 failover routing — Option C is correct because using an Application Load Balancer with health checks and Route 53 failover routing provides automatic failover across Availability Zones with minimal operational overhead. Option A is incorrect because a DNS failover record with manual update requires human intervention and is not automatic. Option B is incorrect because a Network Load Balancer with static IP addresses does not inherently provide cross-AZ failover; Route 53 health checks and routing policies are still needed for failover. Option D is incorrect because a single EC2 instance in one Availability Zone is a single point of failure and provides no high availability.
What should I do if I get this PAS-C01 question wrong?
Review application Load Balancer, then practise related PAS-C01 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Application Load Balancer
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Last reviewed: Jun 20, 2026
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.
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