CRT Cloud Computing & Infrastructure 3

Question 1

What is the role of a Content Delivery Network (CDN) in cloud infrastructure?

Accepted Answer

To distribute content from edge servers closer to end users

Answer

A CDN caches content at geographically distributed edge servers, reducing latency by serving users from the nearest point of presence.

Question 2

In Infrastructure as Code (IaC), what does Terraform primarily use to define cloud resources?

Accepted Answer

HCL configuration files

Answer

Terraform uses HashiCorp Configuration Language (HCL) in .tf files to declaratively define and provision cloud infrastructure.

Question 3

Which cloud cost model charges users only for the compute seconds their function consumes, with no idle billing?

Accepted Answer

Serverless / Function as a Service

Answer

Serverless FaaS (e.g., AWS Lambda) bills only for actual execution time in milliseconds, eliminating costs when code is not running.

Question 4

What does RPO (Recovery Point Objective) measure in a cloud disaster recovery plan?

Accepted Answer

The maximum acceptable data loss measured in time

Answer

RPO defines the maximum age of data that must be recoverable after a disaster, essentially the tolerable data loss window.

Question 5

Which cloud networking component acts as a virtual firewall, controlling inbound and outbound traffic at the instance level?

Accepted Answer

Security Group

Answer

Security Groups function as stateful virtual firewalls attached directly to instances, evaluating all inbound and outbound traffic rules.

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