CRT Cloud Computing & Infrastructure 5

Question 1

What is the key difference between vertical scaling (scale-up) and horizontal scaling (scale-out) in cloud infrastructure?

Accepted Answer

Vertical scaling increases a single instance's resources; horizontal scaling adds more instances

Answer

Vertical scaling grows a single server's CPU/RAM/storage, while horizontal scaling distributes load across additional instances.

Question 2

Which cloud storage type is optimized for high-throughput sequential reads and writes, such as big data analytics workloads?

Accepted Answer

Object storage

Answer

Object storage like Amazon S3 handles massive unstructured datasets and is optimized for large-scale parallel reads common in analytics pipelines.

Question 3

What does a CI/CD pipeline primarily automate in cloud software delivery?

Accepted Answer

Building, testing, and deploying code changes continuously

Answer

CI/CD (Continuous Integration/Continuous Delivery) pipelines automate code integration, automated testing, and deployment to reduce manual release steps.

Question 4

Which cloud pricing strategy reserves compute capacity for 1 or 3 years in exchange for significant discounts compared to on-demand rates?

Accepted Answer

Reserved instances

Answer

Reserved Instances commit to a specific instance type for 1 or 3 years, offering up to 72% savings compared to on-demand pricing.

Question 5

In cloud security, what does encryption 'at rest' protect against?

Accepted Answer

Unauthorized access to stored data if physical media is compromised

Answer

Encryption at rest protects data stored on disk from being read if the storage media is physically stolen or accessed without authorization.

(CRT) Certified Retail Tobacconist Practice Test

(CRT) Certified Retail Tobacconist Practice Test

CRT Cloud Computing & Infrastructure 5