Exam Prep Flashcards
What are Capital Expenditures (CapEx)?
Capital Expenditures (CapEx) refer to investments in long-term assets, involving large upfront investments, such as physical infrastructure like servers and datacenters.
What are Operational Expenditures (OpEx)?
Operational Expenditures (OpEx) are ongoing expenses for business operations, characterized by a pay-as-you-go model without large upfront investments.
What are CapEx Technology Costs?
CapEx Technology Costs involve upfront investments in physical infrastructure like servers and datacenters, allowing organizations to forecast long-term needs and potentially benefit from tax deductions.
What are OpEx Technology Costs?
OpEx Technology Costs are ongoing expenses for technology services, where organizations “rent” services instead of purchasing them upfront, paying only for what is needed at the moment without the need for long-term forecasts.
How does OpEx relate to Cloud Computing?
OpEx and Cloud Computing are closely linked as cloud services typically operate on an OpEx model, offering consumption-based pricing where organizations pay based on immediate usage, enabling low costs during periods of low usage and the ability to scale resources as needed.
What is the essence of Cloud Computing?
Cloud Computing involves on-demand delivery of compute services over the internet, including compute, networking, storage, databases, and software, with flexibility being a key advantage.
What is the Shared Responsibility Model in Cloud Computing?
The Shared Responsibility Model entails the separation of responsibility between cloud vendors and customers, with different cloud service models having different breakdowns of responsibilities, ensuring ongoing and foundational topics in cloud computing discussions.
What are the key characteristics of the Private Cloud model?
The Private Cloud model is dedicated to a single customer, similar to a datacenter, not available to the public, but involves a lot of maintenance and upfront costs.
What characterizes the Public Cloud model?
The Public Cloud model is available to anyone, provided by major providers like Azure, AWS, and GCP, offering greater flexibility compared to private clouds.
What is the Hybrid Cloud model known for?
The Hybrid Cloud model offers the most flexibility by allowing organizations to connect public cloud with private workloads, but it also introduces more complexity compared to other cloud models.
What does IaaS stand for, and what does it offer?
IaaS stands for Infrastructure as a Service, providing managed infrastructure such as virtual machines (VMs). Users have full control over the virtualized computer aspects except physical components like CPU, RAM, OS, and networking.
What responsibilities do users have in an IaaS model?
In IaaS, users are responsible for managing the operating system and user access, alongside having full control over the virtualized environment.
What is PaaS, and how does it differ from IaaS?
PaaS, or Platform as a Service, offers fully managed cloud solutions where the cloud vendor handles infrastructure management, allowing users to focus solely on developing solutions without worrying about infrastructure management.
What are the key features of PaaS?
PaaS provides specialized services for different use cases, offering a serverless option where users can run code without any resource management. However, this trade-off may result in less flexibility and control.
What is SaaS, and what types of applications does it offer?
SaaS, or Software as a Service, provides ready-to-go, cloud-based software, primarily productivity applications, accessible over the internet with hosting and scaling provided. It operates on a subscription model and is tailored for specialized use cases.
What is Defense in Depth, and what does it involve?
Defense in Depth is a security strategy involving layers of defense to protect data, including layers such as data, application, compute, network, perimeter, identity and access, and physical security. Cloud vendors typically handle physical security.