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Software-Defined Networking
Published in Vikas Kumar Jha, Bishwajeet Pandey, Ciro Rodriguez Rodriguez, Network Evolution and Applications, 2023
Vikas Kumar Jha, Bishwajeet Pandey, Ciro Rodriguez Rodriguez
With SDN, the importance of software-centric approach to network services has increased, which was traditionally or initially mostly having the hardware-centric approach. This has been more beneficial with giving several benefits to the enterprises, network service providers, device-vendors, organizations, etc., such as cost-effective, dynamic, software-controlled, and less manual effort. The use of software in controlling the network services has developed a virtualization layer on top of the hardware infrastructure. This virtualization has helped in developing the network services based on the requirement of applications and not directly depending on the underlying hardware infrastructure. Thus, in simplest manner, we can say that an SDN is an evolution of the networking technologies and is the modern-era networking with a new approach to networking as compared with the legacy networking, which has given a framework for modern application-centric networking with multiple solutions available.
IT Security Action Plan
Published in Frank R. Spellman, Fundamentals of Public Utilities Management, 2020
Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources. The terms of service with all cloud service providers should be consulted to ensure that the company’s information and activities are protected with the same degree of security that the company would intend to provide on its own. Businesses should request security and auditing from their cloud service providers as applicable to the business’s needs and concerns. Service-level agreements of system restoration and reconstitution time must be reviewed and understood. Businesses should also inquire about additional services a cloud service can provide. These services may include backup-and-restore services and encryption services, which may be very attractive to businesses.
The impact of market de-regulation upon the management of potable water infrastructure: a UK perspective
Published in Mark Knight, Neil Thomson, Underground Infrastructure Research, 2020
Each water undertaker in England and Wales has now produced its own NAC. Most of this activity occurred during the 6-month period September 1999 to March 2000, a process which took British Gas Transco at least five years to perfect for the gas sector. Each NAC must:- Provide water transportation and storage services to meet market requirements on a nondiscriminatory basis.Ensure system security at all times without risk to human health.Ensure that serviceability and water quality are not compromised.Not be construed as anti-competitive..Provide pricing regimes which reflect the true cost of service delivered.Balance water supply and demand requirements.Ensure that all third parties involved in the supply chain carry out their own supply-demand balancingEnsure that engineering works are performed to the correct standards
A Comprehensive Literature of Genetics Cryptographic Algorithms for Data Security in Cloud Computing
Published in Cybernetics and Systems, 2023
Ozgu Can, Fursan Thabit, Asia Othman Aljahdali, Sharaf Al-Homdy, Hoda A. Alkhzaimi
Cloud computing is a technology that enables the delivery of services through the Internet. The cloud functions as a data center. A consumer is charged for using cloud resources, storage, and other services. Cloud subscriptions for users are determined by the services they require, such as IaaS (Infrastructure as a Service), PaaS (Platform as a Service), and SaaS (Software as a Service) (Software as a service). As a result, Cloud Computing has arisen to provide processing power storage, resources, and applications to users as a “Utility” for meeting their needs. The availability of this cloud model is promoted. It has five distinguishing characteristics, three service models, and four deployment models. The five most important aspects are resource pooling, broad network access, on-demand self-service, rapid flexibility, and measurable service. There are three service models IaaS: Infrastructure as A Service, PaaS: Platform as a service, SaaS: software as a service, application as a service, and everything as a service. The four deployment models are public cloud, private cloud, hybrid cloud, and community cloud.
RTTSMCE: a response time aware task scheduling in multi-cloudlet environment
Published in International Journal of Computers and Applications, 2021
Somula Ramasubbareddy, R. Sasikala
Cloud provides enough resources in the form of software as a service (Saas), infrastructure as a service (Iaas) and platform as a service(PaaS) [1–3,7,8]. By using MCC, mobile user process application on Remote cloud and the result will return to the mobile device this process can be termed as offloading [9,10]. The method of offloading can save computation power and battery power [9]. The Limitations of a mobile device can be overcome by using Remote cloud services but communication latency causes huge communication cost due to the long physical distance between the mobile device and remote cloud servers. To solve these issues, the concept of cloudlet is introduced. the cloudlet is available nearby mobile users, which exist between mobile devices and Remote cloud. The user access cache data copies from nearby cloudlet instead of accessing from the Remote cloud [11,12]. The mobile device sends a service request to cloudlet and access available resources, otherwise, mobile devices access from the remote server when cloudlets fail to provide resources [5,13]. Cloudless provide high bandwidth, low latency compared to remote cloud [12,14,15]. The following Figure 1 depicts the Multi-cloudlet based architecture, where the Mobile device connects the Remote cloud through cloudlets [11,16]. The response aware load balancing among servers is introduced through SDN Architecture [17,18]. When requests arrive at cloudlet, the cloudlet serves the service request otherwise, the request is left to the remote cloud (ex: Amazon cloud).
Present and future of semantic web technologies: a research statement
Published in International Journal of Computers and Applications, 2021
Cloud computing is an extended form of Internet-based computing that provides shared resources of computer processing and data to computers and other devices on demand. It delivers computing services like software, servers, networking, storage, and so on over the Internet. Cloud computing is a very vast area for research; therefore, the landscape of cloud computing has significantly changed over the last decade. The most challenging research directions for cloud computing are storage and fault tolerance strategies, peer-to-peer-based cloud workflow system, adaptive and data-driven workload manager for general clouds, service scalability and interoperability over the cloud, the combining of high-performance computing into cloud computing services, scientific services and data management in the cloud, and cloud computing privacy and security preservation in the cloud. We can remove problems of cloud interoperability by storing the information of cloud Resources and Services Description into ontologies with five main layers, namely software infrastructure, software environments, software kernel, hardware, and applications. Each layer holds more than one service if it has similar levels of abstraction. The cloud system for service discovery uses the concept of cloud ontology to compute the correspondences among the services. This system is an agent-based discovery system that utilizes three types of similar reasoning and enables to obtain the correspondences of cloud services. Their cloud ontology has entities of different cloud services for infrastructure as a service, software as a service, and platform as a service. Cloud computing ontologies are mainly used for the selection and discovery of the best service according to users’ needs and the description of cloud services resources.