TEST SET 2 SUBJECTIVES

Define the term cloud computing. (2 marks)

Answer explanation

Cloud computing is the delivery of computing services—including servers, storage, databases, networking, software, and more—over the internet (cloud) to offer faster innovation, flexible resources, and economies of scale. (2 marks)

• Describe two core characteristics of cloud computing. (3 marks)

Answer explanation

• Two core characteristics:

  • On-demand self-service: Users can provision resources without human interaction.

  • Broad network access: Services are available over the network and accessed through standard platforms. (3 marks)

Illustrate the difference between public and private cloud with examples. (4 marks)

Answer explanation

• Public Cloud: Services offered to multiple customers, e.g., AWS or Google Cloud.

• Private Cloud: Dedicated infrastructure for one organization, often managed internally. (4 marks)

Describe how IaaS, PaaS, and SaaS differ in terms of user control and provider responsibility. (4 marks)

Explain the process of deploying an application using Platform as a Service (PaaS). (4 marks)

Answer explanation

• Developers upload code to the PaaS environment.

• The platform compiles, tests, and deploys the app.

• Built-in services like databases or scaling are auto-integrated. (4 marks)

Compare how cloud storage is used in the education sector versus the healthcare sector. (5 marks)

Answer explanation

• Education: Cloud used to store digital learning materials, enable collaboration via shared docs.

• Healthcare: Used to store patient records, enable secure remote access.

• Comparison: Education prioritizes accessibility and sharing; healthcare emphasizes compliance, privacy. (5 marks)

Define the term virtualization in cloud computing. (2 marks)

Answer explanation

Virtualization is the process of creating virtual versions of physical resources like servers, networks, or storage, enabling multiple systems to run on a single physical machine. (2 marks)

Explain the function of a hypervisor in resource management. (3 marks)

Answer explanation

A hypervisor allocates and manages CPU, memory, storage, and network to multiple VMs, ensuring isolated execution environments on a single physical host. (3 marks)

Differentiate between containers and virtual machines in terms of performance and deployment. (4 marks)

Answer explanation

• Containers: Lightweight, share OS kernel, faster startup.

• VMs: Include full OS, heavier, better isolation.

• Deployment: Containers are better for microservices; VMs suit legacy applications. (4 marks)

Describe how elasticity and scalability benefit web applications hosted in cloud. (4 marks)

Answer explanation

• Elasticity allows automatic scaling based on demand.

• Scalability enables apps to handle increasing workloads without performance loss.

• Together, they improve performance and cost-efficiency. (4 marks)