Q1: What is cloud computing? A1: Cloud computing is the delivery of
computing services including servers, storage, databases, networking, software,
analytics, and intelligence over the Internet ("the cloud") to offer faster
innovation, flexible resources, and economies of scale.
Q2: What are the main service models in cloud computing? A2: The three
main service models are Infrastructure as a Service (IaaS), Platform as a Service
(PaaS), and Software as a Service (SaaS).
Q3: What is IaaS? A3: Infrastructure as a Service (IaaS) provides virtualized
computing resources over the internet, including virtual machines, storage, and
networks, allowing users to rent IT infrastructure on a pay-as-you-go basis.
Q4: What is PaaS? A4: Platform as a Service (PaaS) provides a platform
allowing customers to develop, run, and manage applications without the
complexity of building and maintaining the infrastructure.
Q5: What is SaaS? A5: Software as a Service (SaaS) delivers software
applications over the internet on a subscription basis, eliminating the need for
installation and maintenance on individual computers.
Q6: What are the cloud deployment models? A6: The main cloud
deployment models are Public Cloud, Private Cloud, Hybrid Cloud, and
Community Cloud.
Q7: What is a Public Cloud? A7: A Public Cloud is a cloud computing model
where services are delivered over the public internet and shared across multiple
organizations, owned and operated by third-party cloud service providers.
Q8: What is a Private Cloud? A8: A Private Cloud is a cloud computing
environment dedicated to a single organization, offering greater control,
security, and customization, either hosted on-premises or by a third party.
,Q9: What is a Hybrid Cloud? A9: A Hybrid Cloud combines public and
private clouds, allowing data and applications to be shared between them,
providing greater flexibility and optimization of existing infrastructure.
Q10: What are the key characteristics of cloud computing according to
NIST? A10: The five key characteristics are: On-demand self-service, Broad
network access, Resource pooling, Rapid elasticity, and Measured service.
Q11: What is virtualization in cloud computing? A11: Virtualization is the
creation of virtual versions of computing resources such as servers, storage, and
networks, enabling multiple virtual instances to run on a single physical
machine.
Q12: What is a hypervisor? A12: A hypervisor, or Virtual Machine Monitor
(VMM), is software that creates and runs virtual machines by separating the
physical hardware from the operating systems and applications.
Q13: What are the two types of hypervisors? A13: Type 1 (bare-metal)
hypervisors run directly on hardware, while Type 2 (hosted) hypervisors run on
top of an existing operating system.
Q14: What is scalability in cloud computing? A14: Scalability is the ability to
increase or decrease computing resources based on demand, either vertically
(adding resources to existing instances) or horizontally (adding more instances).
Q15: What is elasticity in cloud computing? A15: Elasticity is the capability
to automatically scale resources up or down based on current demand, ensuring
optimal resource utilization and cost efficiency.
Q16: What is multi-tenancy? A16: Multi-tenancy is an architecture where a
single instance of software serves multiple customers (tenants), with each
tenant's data isolated and secure from others.
Q17: What is cloud orchestration? A17: Cloud orchestration is the automated
arrangement, coordination, and management of complex cloud systems,
middleware, and services to deploy and manage cloud resources efficiently.
Q18: What is containerization? A18: Containerization is a lightweight
virtualization method that packages applications and their dependencies
together, enabling consistent deployment across different computing
environments.
Q19: What is Docker? A19: Docker is a popular containerization platform that
allows developers to package applications into containers, which are
, standardized executable components combining application source code with
operating system libraries and dependencies.
Q20: What is Kubernetes? A20: Kubernetes is an open-source container
orchestration platform that automates deploying, scaling, and managing
containerized applications across clusters of hosts.
Q21: What is cloud migration? A21: Cloud migration is the process of
moving data, applications, and other business elements from on-premises
infrastructure or legacy systems to a cloud computing environment.
Q22: What are the benefits of cloud computing? A22: Key benefits include
cost reduction, scalability, flexibility, automatic updates, disaster recovery,
collaboration enhancement, and access to advanced technologies.
Q23: What is OpEx vs CapEx in cloud context? A23: CapEx (Capital
Expenditure) involves upfront investment in infrastructure, while OpEx
(Operational Expenditure) involves ongoing costs for cloud services, allowing
pay-as-you-go pricing.
Q24: What is cloud bursting? A24: Cloud bursting is a deployment model
where applications run in a private cloud or data center and burst into a public
cloud when demand for computing capacity spikes.
Q25: What is a cloud service provider (CSP)? A25: A Cloud Service
Provider is a company that offers cloud computing services such as storage,
computing power, and applications to individuals or organizations.
Q26: What is serverless computing? A26: Serverless computing is a cloud
execution model where the cloud provider manages the infrastructure, allowing
developers to focus on code without managing servers.
Q27: What is Function as a Service (FaaS)? A27: FaaS is a serverless
computing model where developers deploy individual functions that are
executed in response to events, with the cloud provider managing all
infrastructure.
Q28: What is cloud-native? A28: Cloud-native refers to applications designed
specifically to run in cloud environments, utilizing microservices, containers,
and dynamic orchestration for scalability and resilience.
Q29: What is a microservices architecture? A29: Microservices architecture
is a design approach where applications are built as collections of small,
independent services that communicate through APIs.
computing services including servers, storage, databases, networking, software,
analytics, and intelligence over the Internet ("the cloud") to offer faster
innovation, flexible resources, and economies of scale.
Q2: What are the main service models in cloud computing? A2: The three
main service models are Infrastructure as a Service (IaaS), Platform as a Service
(PaaS), and Software as a Service (SaaS).
Q3: What is IaaS? A3: Infrastructure as a Service (IaaS) provides virtualized
computing resources over the internet, including virtual machines, storage, and
networks, allowing users to rent IT infrastructure on a pay-as-you-go basis.
Q4: What is PaaS? A4: Platform as a Service (PaaS) provides a platform
allowing customers to develop, run, and manage applications without the
complexity of building and maintaining the infrastructure.
Q5: What is SaaS? A5: Software as a Service (SaaS) delivers software
applications over the internet on a subscription basis, eliminating the need for
installation and maintenance on individual computers.
Q6: What are the cloud deployment models? A6: The main cloud
deployment models are Public Cloud, Private Cloud, Hybrid Cloud, and
Community Cloud.
Q7: What is a Public Cloud? A7: A Public Cloud is a cloud computing model
where services are delivered over the public internet and shared across multiple
organizations, owned and operated by third-party cloud service providers.
Q8: What is a Private Cloud? A8: A Private Cloud is a cloud computing
environment dedicated to a single organization, offering greater control,
security, and customization, either hosted on-premises or by a third party.
,Q9: What is a Hybrid Cloud? A9: A Hybrid Cloud combines public and
private clouds, allowing data and applications to be shared between them,
providing greater flexibility and optimization of existing infrastructure.
Q10: What are the key characteristics of cloud computing according to
NIST? A10: The five key characteristics are: On-demand self-service, Broad
network access, Resource pooling, Rapid elasticity, and Measured service.
Q11: What is virtualization in cloud computing? A11: Virtualization is the
creation of virtual versions of computing resources such as servers, storage, and
networks, enabling multiple virtual instances to run on a single physical
machine.
Q12: What is a hypervisor? A12: A hypervisor, or Virtual Machine Monitor
(VMM), is software that creates and runs virtual machines by separating the
physical hardware from the operating systems and applications.
Q13: What are the two types of hypervisors? A13: Type 1 (bare-metal)
hypervisors run directly on hardware, while Type 2 (hosted) hypervisors run on
top of an existing operating system.
Q14: What is scalability in cloud computing? A14: Scalability is the ability to
increase or decrease computing resources based on demand, either vertically
(adding resources to existing instances) or horizontally (adding more instances).
Q15: What is elasticity in cloud computing? A15: Elasticity is the capability
to automatically scale resources up or down based on current demand, ensuring
optimal resource utilization and cost efficiency.
Q16: What is multi-tenancy? A16: Multi-tenancy is an architecture where a
single instance of software serves multiple customers (tenants), with each
tenant's data isolated and secure from others.
Q17: What is cloud orchestration? A17: Cloud orchestration is the automated
arrangement, coordination, and management of complex cloud systems,
middleware, and services to deploy and manage cloud resources efficiently.
Q18: What is containerization? A18: Containerization is a lightweight
virtualization method that packages applications and their dependencies
together, enabling consistent deployment across different computing
environments.
Q19: What is Docker? A19: Docker is a popular containerization platform that
allows developers to package applications into containers, which are
, standardized executable components combining application source code with
operating system libraries and dependencies.
Q20: What is Kubernetes? A20: Kubernetes is an open-source container
orchestration platform that automates deploying, scaling, and managing
containerized applications across clusters of hosts.
Q21: What is cloud migration? A21: Cloud migration is the process of
moving data, applications, and other business elements from on-premises
infrastructure or legacy systems to a cloud computing environment.
Q22: What are the benefits of cloud computing? A22: Key benefits include
cost reduction, scalability, flexibility, automatic updates, disaster recovery,
collaboration enhancement, and access to advanced technologies.
Q23: What is OpEx vs CapEx in cloud context? A23: CapEx (Capital
Expenditure) involves upfront investment in infrastructure, while OpEx
(Operational Expenditure) involves ongoing costs for cloud services, allowing
pay-as-you-go pricing.
Q24: What is cloud bursting? A24: Cloud bursting is a deployment model
where applications run in a private cloud or data center and burst into a public
cloud when demand for computing capacity spikes.
Q25: What is a cloud service provider (CSP)? A25: A Cloud Service
Provider is a company that offers cloud computing services such as storage,
computing power, and applications to individuals or organizations.
Q26: What is serverless computing? A26: Serverless computing is a cloud
execution model where the cloud provider manages the infrastructure, allowing
developers to focus on code without managing servers.
Q27: What is Function as a Service (FaaS)? A27: FaaS is a serverless
computing model where developers deploy individual functions that are
executed in response to events, with the cloud provider managing all
infrastructure.
Q28: What is cloud-native? A28: Cloud-native refers to applications designed
specifically to run in cloud environments, utilizing microservices, containers,
and dynamic orchestration for scalability and resilience.
Q29: What is a microservices architecture? A29: Microservices architecture
is a design approach where applications are built as collections of small,
independent services that communicate through APIs.
