Cloud Interview Questions and Answers
Question - 81 : - Disadvantages of SaaS cloud computing layer
Answer - 81 : -
1) Security
Data is stored in the cloud, so that that security may be an issue for some users. However, cloud computing is not more secure than in-house deployment.
2) Latency issue
Since data and applications are stored in the cloud at a variable distance from the end-user, there is a possibility that there may be more significant latency when interacting with the application compared to local deployment. Therefore, the SaaS model is not suitable for applications whose demand response time in milliseconds.
3) Total Dependency on the Internet
Without an internet connection, most SaaS applications are not usable.
4) Switching between SaaS vendors is difficult
Switching SaaS vendors involves the slow and challenging task of transferring the massive data files over the internet and then converting and importing them into another SaaS.
Question - 82 : - What is IaaS in Cloud Computing?
Answer - 82 : -
IaaS, i.e., Infrastructure as a Service, also known as Hardware as a Service. In this model type, organizations usually give their IT infrastructures such as servers, processing, storage, virtual machines, and other resources. Customers can access the resources very quickly on the internet using the on-demand pay model.
Take up IaaS for cloud computing course and understand more about these clouds and their specifications.
Iaas platform eliminates the need for every organization to maintain the IT infrastructure.
IaaS is divided into three aspects: public, private, and hybrid. The private cloud can offer that infrastructure resides at the customer end. In contrast, the public cloud is located at the cloud computing data Centre end, and the hybrid cloud is a combination of both public and private cloud.
IaaS provides us with various services, which are listed below:
Compute: Computing various services, including virtual CPUs, Virtual main memory for virtual machines at the user end.
Storage: IaaS provider provides back-end support for storage for storing files.
Network: Network as a Service provides networking components such as routers, switches, and bridges for virtual machines.
Load Balancers: it gives load balancing at the infrastructure layer.
Question - 83 : - What are the security laws which are implemented to secure data in a cloud ?
Answer - 83 : -
The security laws which are implemented to secure data in cloud are
- Processing: Control the data that is being processed correctly and completely in an application
- File: It manages and control the data being manipulated in any of the file
- Output reconciliation: It controls the data which has to be reconciled from input to output
- Input Validation: Control the input data
- Security and Backup: It provides security and backup it also controls the security breaches logs
Question - 84 : - Mention the name of some large cloud providers and databases?
Answer - 84 : -
- Google bigtable
- Amazon simpleDB
- Cloud based SQL
Question - 85 : - Explain the difference between cloud and traditional datacenters?
Answer - 85 : -
- The cost of the traditional data center is higher due to heating and hardware/software issues
- Cloud gets scaled when the demand increases. Majority of the expenses are spent on the maintenance of the data centers, while that is not the case with cloud computing
Question - 86 : - Explain what are the different modes of software as a service (SaaS)?
Answer - 86 : -
- Simple multi-tenancy : In this each user has independent resources and are different from other users, it is an efficient mode.
- Fine grain multi-tenancy: In this type, the resources can be shared by many but the functionality remains the same.
Question - 87 : - What is the use of API’s in cloud services?
Answer - 87 : -
API’s ( Application Programming Interface) is very useful in cloud platforms
- It eliminates the need to write the fully fledged programs
- It provides the instructions to make communication between one or more applications
- It allows easy creation of applications and link the cloud services with other systems
Question - 88 : - What are the different data centers deployed for cloud computing?
Answer - 88 : -
Cloud computing consists of different datacenters like
- Containerized Datacenters
- Low Density Datacenters
Question - 89 : - In cloud computing what are the different layers?
Answer - 89 : -
The different 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
Question - 90 : - How important is the platform as a service?
Answer - 90 : -
Platform as a service or PAAS is an important layer in cloud computing. It provides application platform for providers. It is responsible for providing complete virtualization of the infrastructure layer and makes it work like a single server.