CRT Cloud Computing & Infrastructure 2 — Questions and Answers
Question 1: Which cloud deployment model keeps all resources exclusively within a single organization's private network?
- Public cloud
- Private cloud (Correct answer)
- Hybrid cloud
- Community cloud
Correct answer: Private cloud
A private cloud dedicates all infrastructure to one organization, hosted on-premises or by a third party, with no shared resources.
Question 2: What term describes the ability of a cloud system to automatically add resources during peak demand and remove them when demand drops?
- Load balancing
- Elasticity (Correct answer)
- Fault tolerance
- Redundancy
Correct answer: Elasticity
Elasticity refers to the dynamic scaling of cloud resources up or down automatically in response to workload changes.
Question 3: Which cloud storage class is best suited for data that is rarely accessed but must be retrievable within milliseconds?
- S3 Glacier Deep Archive
- S3 Standard-IA
- S3 Glacier Instant Retrieval (Correct answer)
- S3 One Zone-IA
Correct answer: S3 Glacier Instant Retrieval
S3 Glacier Instant Retrieval is designed for archive data that needs millisecond access, combining low cost with fast retrieval.
Question 4: In cloud networking, what does a Virtual Private Cloud (VPC) primarily provide?
- A shared public IP pool
- An isolated virtual network within the cloud provider (Correct answer)
- A dedicated hardware server
- A content delivery network
Correct answer: An isolated virtual network within the cloud provider
A VPC is a logically isolated section of the cloud where users can launch resources in a defined virtual network they control.
Question 5: Which type of cloud service gives developers a platform to build, run, and manage applications without handling the underlying infrastructure?
- IaaS
- SaaS
- PaaS (Correct answer)
- FaaS
Correct answer: PaaS
Platform as a Service (PaaS) provides a managed environment for application development, abstracting OS, middleware, and runtime management.
Question 6: What is the primary purpose of an Availability Zone in major cloud providers like AWS?
- To reduce cost by sharing hardware
- To provide geographic fault isolation within a region (Correct answer)
- To enforce data sovereignty laws
- To increase network bandwidth
Correct answer: To provide geographic fault isolation within a region
Availability Zones are physically separate data centers within a region, designed to be isolated from failures in other zones.
Question 7: Which protocol is most commonly used to securely manage and configure Linux-based cloud virtual machines remotely?
- FTP
- Telnet
- SSH (Correct answer)
- RDP
Correct answer: SSH
SSH (Secure Shell) provides encrypted remote command-line access to Linux systems, making it the standard for cloud VM management.
CRT Cloud Computing & Infrastructure 2
Which cloud deployment model keeps all resources exclusively within a single organization's private network?