CPA Cloud Infrastructure 2 — Questions and Answers
Question 1: Which cloud storage class is MOST cost-effective for data that is accessed less than once per year?
- Standard storage
- Infrequent Access storage
- Archive/Glacier storage (Correct answer)
- Reduced Redundancy storage
Correct answer: Archive/Glacier storage
Archive storage (e.g., AWS Glacier) offers the lowest cost for data that is rarely accessed, at the expense of higher retrieval latency.
Question 2: In cloud networking, what does a VPC (Virtual Private Cloud) primarily provide?
- A managed database service
- An isolated virtual network segment within the public cloud (Correct answer)
- A CDN for static assets
- A serverless compute environment
Correct answer: An isolated virtual network segment within the public cloud
A VPC gives users a logically isolated section of the cloud where they can launch resources in a defined virtual network.
Question 3: Which autoscaling policy adds or removes instances based on a scheduled time rather than real-time metrics?
- Dynamic scaling
- Predictive scaling
- Scheduled scaling (Correct answer)
- Manual scaling
Correct answer: Scheduled scaling
Scheduled scaling adjusts capacity at predetermined times, useful for known traffic patterns like business-hours spikes.
Question 4: What is the purpose of a cloud region's Availability Zone (AZ)?
- To reduce costs by sharing hardware across customers
- To provide isolated data centers within a region for fault tolerance (Correct answer)
- To enforce geographic data residency laws only
- To act as a CDN edge node
Correct answer: To provide isolated data centers within a region for fault tolerance
Availability Zones are physically separate data centers within a region, designed so failures in one AZ don't affect others.
Question 5: A developer deploys an application that needs to store user session data accessible by multiple app servers. Which cloud service type is BEST suited?
- Block storage volume
- Object storage bucket
- In-memory distributed cache (e.g., Redis) (Correct answer)
- Local instance storage
Correct answer: In-memory distributed cache (e.g., Redis)
An in-memory distributed cache like Redis provides fast, shared session storage accessible across multiple application servers.
Question 6: Which concept describes the cloud provider's responsibility versus the customer's responsibility for security?
- Principle of least privilege
- Zero-trust architecture
- Shared responsibility model (Correct answer)
- Defense in depth
Correct answer: Shared responsibility model
The shared responsibility model defines which security tasks the cloud provider handles (physical, hypervisor) versus the customer (OS, application, data).
Question 7: What does 'elasticity' mean in cloud computing?
- The ability to store elastic data formats like JSON
- Automatic scaling of resources up or down to match demand (Correct answer)
- The durability guarantee for stored objects
- Multi-region replication of services
Correct answer: Automatic scaling of resources up or down to match demand
Elasticity refers to the cloud's ability to automatically provision and release resources in near-real-time based on workload demand.
CPA Cloud Infrastructure 2
Which cloud storage class is MOST cost-effective for data that is accessed less than once per year?