Arman Process Journal (APJ)

Abstract Nowadays, operating systems exist in almost every device, such as mobile phones, personal computers, main computers, etc., with various functions. Operating systems are constantly being updated and improved during recent years. The operating system is a portal that is responsible for using and controlling the computer hardware and also creating a powerful yet useful software environment for performing various tasks. Also, software operating system is a system that manages computer resources and provides a platform for application software to run and use its services. The main criterion for choosing an operating system is based on its functions, features and how it is used in different services. Therefore, one of the popular scientific topics in this field that can be addressed and is the focus of this research is the knowledge of different types of operating systems and related applications from the past to the present. In the article, we intend to compare and examine the types of common operating systems, their features, advantages and disadvantages, focusing on distributed systems.

Abstract Cloud computing is a leading paradigm in the era of information and communication technology to provide the shared and cost-effective hardware, middleware and software resources and related services. This paradigm is the best model for easy access to set of shared computing resources such as networks, servers, storage devices and so on. Related services are available at any time and place, according to the user's request and users can easily use this services by connecting to a physical or logical server over the Internet. In this research, an attempt is made to examine the important and fundamental dimensions of this paradigm and related details. In this study, we also examined the important solutions of the virtualization technology, which is one of the emerging techniques in the world of information and communication technology, as a basis for building the suitable and cost-effective infrastructures of a cloud environments. Applying virtualization in cloud computing is a knowledge and technique that can be used to overcome many problems and obstacles in the field of emerging information technologies and pave the way for sustainable development and creating the right conditions for business to the best.

Abstract Cloud computing is a processing model that has attracted the attention of researchers due to its flexibility, rapid expansion and low cost, and it provides the shared use of services without the need for ownership and management of resources in the network environment. On the other hand, cloud computing is a pool of virtual computer resources. Resource virtualization in cloud computing allows heavy tasks to be performed faster and with less dependence on physical resources. Although cloud computing has become very popular among users, security problems are considered as a big obstacle for users to use cloud computing systems. Data security and virtualization security are two important security issues in cloud computing. In this article, we examine the dimensions of virtualization security in cloud computing environments.

Abstract Cloud computing is a leading paradigm in the era of information and communication technology to provide the shared and cost-effective hardware, middleware and software resources and related services. This paradigm is the best model for easy access to set of shared computing resources such as networks, servers, storage devices and so on. Related services are available at any time and place, according to the user's request and users can easily use this services by connecting to a physical or logical server over the Internet. In this research, an attempt is made to examine the important and fundamental dimensions of this paradigm and related details. In this study, we also examined the important solutions of the virtualization technology, which is one of the emerging techniques in the world of information and communication technology, as a basis for building the suitable and cost-effective infrastructures of a cloud environments. Applying virtualization in cloud computing is a knowledge and technique that can be used to overcome many problems and obstacles in the field of emerging information technologies and pave the way for sustainable development and creating the right conditions for business to the best.