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AU Cloud Computing Principles Questions

AU Cloud Computing Principles Questions


Question 1:

Resource Pooling Architecture: Resource pooling is a fundamental principle in cloud computing that involves aggregating and efficiently utilizing computing resources. In this architecture, multiple customers share a common pool of computing resources, such as CPU, memory, storage, and network bandwidth, which are dynamically allocated based on demand. Some advantages of resource pooling architecture include:

  1. Cost Efficiency: Resource pooling allows organizations to maximize resource utilization, reducing overall costs. Resources are allocated on-demand, eliminating the need for over-provisioning.
  2. Scalability: It enables easy scalability as resources can be allocated or deallocated rapidly to meet changing workloads.
  3. Flexibility: Customers can access a wide range of resources without the need for physical infrastructure management.

However, there are also disadvantages:

  1. Security Concerns: Sharing resources may raise security concerns, especially in multi-tenant environments. Proper isolation mechanisms are essential to mitigate these risks.
  2. Performance Variability: Resource contention among multiple users can lead to performance fluctuations, affecting the quality of service.

Resource pooling architecture is commonly used by cloud service providers like Amazon Web Services (AWS), Microsoft Azure, and Google Cloud. Enterprises with dynamic workloads or those seeking cost-effective infrastructure often adopt this architecture.

Cloud Bursting Architecture: Cloud bursting is a hybrid cloud computing model where an organization extends its private data center resources into the public cloud to handle spikes in demand. Some advantages of cloud bursting architecture include:

  1. Scalability: It allows organizations to scale resources seamlessly during peak loads, ensuring that services remain responsive and available.
  2. Cost Optimization: Companies can avoid the upfront investment in additional on-premises infrastructure by utilizing public cloud resources only when needed.

However, there are also disadvantages:

  1. Integration Complexity: Setting up a seamless cloud bursting solution requires careful integration between the private and public cloud environments, which can be complex.
  2. Data Transfer Costs: Transferring data between on-premises and cloud environments may incur additional costs, especially if large volumes of data need to be moved.

Cloud bursting is typically used by organizations with variable workloads, such as e-commerce sites during holiday sales or research institutions with sporadic high-performance computing needs.

Question 2:

Zero Downtime Architecture: Zero downtime architecture is a design approach that aims to minimize or eliminate service disruptions during updates, maintenance, or hardware failures. It often involves strategies like load balancing, redundancy, and rolling updates. Organizations that prioritize uninterrupted service availability, such as e-commerce platforms and financial institutions, utilize zero downtime architecture. The advantages include:

  1. High Availability: It ensures continuous service availability, improving customer satisfaction and minimizing revenue loss.
  2. Risk Mitigation: By minimizing downtime, the architecture reduces the risk of service interruptions impacting business operations.

Bare Metal Provisioning Architecture: Bare metal provisioning refers to deploying applications directly on physical servers without a hypervisor or virtualization layer. This architecture is favored by applications that require direct access to hardware resources for optimal performance, like high-performance databases or real-time applications. Advantages include:

  1. Performance: Bare metal provisioning offers the best performance as applications have direct access to hardware resources without virtualization overhead.
  2. Isolation: It provides better isolation compared to virtualization, which can be critical for applications with strict security or compliance requirements.

Organizations with performance-sensitive applications or those needing fine-grained control over their infrastructure opt for bare metal provisioning.

Question 3:

(1) Separation of the first (entry) node from looping nodes: Separating the entry node from looping nodes in a graph-based representation of logic flow is a good practice for several reasons. Firstly, it enhances clarity and readability. By having a dedicated entry node, it’s easier to understand where the logic begins and how it flows. Secondly, it minimizes redundancy. Without a clear entry node, you might end up repeating the same initial steps in multiple paths, leading to confusion and potential errors.

(2) Having just one alternative direction given an operation: Limiting each operation to just one alternative direction in a graph-based representation promotes simplicity and reduces ambiguity. It makes the logic flow more deterministic and easier to follow. Having multiple alternative directions from a single node can lead to confusion and make it challenging to predict the outcome of a specific operation, especially in complex systems.

(3) Better ways to represent logic flow: Graph-based diagrams are a widely used and effective way to represent logic flow. However, there are alternatives such as textual representations (e.g., pseudocode or flowcharts), state machines, or even natural language descriptions. The choice of representation depends on the complexity of the logic, the audience, and the specific requirements of the task. In some cases, a combination of different representations might be the most effective way to communicate complex logic. For instance, you might use a graph-based diagram for high-level visualization and pseudocode for detailed implementation instructions.

In summary, the choice of how to represent logic flow in diagrams depends on the specific needs of the project, and it’s essential to prioritize clarity, simplicity, and readability to facilitate effective communication and understanding of the logic.

AU Cloud Computing Principles Questions





Question 1: Describe the following cloud computing principles:

  • Resource pooling architecture
  • Cloud bursting architecture

What are the advantages/disadvantages of each? Who would likely use these architectures?

Question 2: Describe the following cloud computing principles:

  • Zero downtime architecture
  • Bare metal provisioning architecture

Who would utilize each? Why? 

Notes: Mentions at least 2 specific points from the assigned reading/topic. Utilizes at least 2 resources that are properly cited. Discussion at a graduate level, not just recitation of facts from the article. Length of post is at least 300 words.

Question 3: With regard to graphs,

(1) why is it a good idea to separate the first (entry) node from any looping nodes? and

(2) why is it a good idea to have JUST ONE alternative direction, given an operation? [For instance if X < Y we go from node 3 to node 4 ONLY and no other node].  And,

(3) Is there a better way to do all of this?  A better way to represent logic flow than these types of diagrams (either the manual ones like we used in chapter 6 or the ones we saw from the Node Generator for instance)???

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