Top Cloud Computing Interview Questions With Answers Part 1
1. What is cloud computing?
Cloud computing is a culmination of numerous attempts at large-scale computing with seamless access to virtually limitless resources.
Cloud Computing = Software as a Service + Platform as a Service + Infrastructure as a Service.
2. Why cloud computing is considered as Internet-based computing?
- Cloud computing is internet-based computing whereby shared resources, software, and information are provided to computers and other devices on-demand, like the electricity grid.
- It is the next stage technology that uses the clouds to provide the services whenever and wherever the user need it.
- It provides a method to access several servers worldwide.
3. What are the components of Cloud Computing?
Components in a cloud refer to the platforms, like front end, back end, and cloud-based delivery and the network used. All together it forms an architecture for cloud computing. With the main components like SAAS, PAAS and IAAS there are 11 more major categories in cloud computing that are:
4. Define Storage-as-a-Service?
- Storage-as-a-Service: This is the component where we can use or request storage. It is also called disk space on demand.
5. What is the Service Model in Cloud Computing?
The different Service layers of cloud computing are:
- SaaS: Software as a Service (SaaS), it provides users access directly to the cloud application without installing anything on the system.
- IaaS: Infrastructure as a service, it provides the infrastructure in terms of hardware like memory, processor speed etc.
- PaaS: Platform as a service, it provides cloud application platform for the developers
6. What are the kind of cloud storage and why is cloud computing is so popular?
Data is centrally stored in the cloud and available across the internet. There are various storage options available or we can classify them broadly in the following three categories:
- Public Cloud
- Private Cloud
- Hybrid Cloud
7. Define Public Cloud?
In this model a service provider makes resources, such as application and storage, available to the general public over the internet. Public cloud services may be free or offered on a pay-per-usage model.
8. Define Private Cloud?
A private cloud provides more control over the company's data and under the control of the company's IT department.
9. Define Hybrid Cloud?
A hybrid cloud is a combination of public cloud storage and private cloud storage, where some critical data resides in the enterprise's private cloud and other data is stored and accessible from a public cloud storage provider.
10. What are the differences between a public cloud and a private cloud?
- Pay for whatever resource you need at whatever time period.
- These are provided commercially.
- Supports heavy workloads without disturbing any functionality.
- It is very cheap for the consumers, since the hardware, application and other costs are handled by the providers.
- It is owned by a specific private group for their own use of employed, partners and their own customers.
- Security, governance and compliance is highly automated.
- Similarly, the features are like a Public Cloud irrespective of security and maintenance.
- The cost is very high.