Question 600 of 247
SOA-C02 Networking and Content Delivery Practice Question
A SysOps administrator needs to ensure high availability for a web application running on EC2 instances across multiple Availability Zones. Which TWO actions should the administrator take?
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
✓
Launch EC2 instances in at least two different Availability Zones.
Options A and D are correct. Launching EC2 instances across multiple Availability Zones (A) provides fault isolation, and registering them with an Application Load Balancer that has health checks enabled (D) ensures traffic is routed only to healthy instances. Option B is incorrect because CloudFront is a CDN, not a load balancer; it improves performance but does not directly provide high availability by health checking instances. Option C is incorrect because all instances in a single Availability Zone creates a single point of failure. Option E is incorrect because EBS volumes are tied to a specific Availability Zone and real-time replication does not address instance-level failures across zones.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Launch EC2 instances in at least two different Availability Zones.
Why this is correct
Distributing instances across AZs provides fault tolerance.
- ✗
Place a CloudFront distribution in front of the instances.
Why it's wrong here
CloudFront caches content but does not provide load balancing or failover across AZs.
- ✗
Launch all EC2 instances in a single Availability Zone for consistency.
Why it's wrong here
A single AZ is a single point of failure.
- ✓
Register the instances with an Application Load Balancer that has health checks enabled.
Why this is correct
The load balancer distributes traffic and automatically routes away from unhealthy instances.
- ✗
Attach an EBS volume to each instance and replicate data in real-time.
Why it's wrong here
EBS volumes are AZ-specific; replication does not provide high availability for the application layer.
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Last reviewed: Jun 20, 2026
This SOA-C02 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 SOA-C02 exam.
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