These are interfaces, usually kept in a tabular structure, that access some subsystem within the kernel such as disk operations. Essentially calls are made within programs and a checked copy of the request is passed through the system call. Hence, not far to travel at all. The disadvantages of the monolithic kernel are converse with the advantages. Modifying and testing monolithic systems takes longer than their microkernel counterparts.
It shares the infrastructure between several organizations from a specific community. It may be managed internally Community cloud falls between public and private with respect to the target of customers but the computational resources and infrastructure are exclusive to two or more organizations that have common privacy or security Community cloud combines distributed resources from grid computing and distributed from digital ecosystem and sustainability from green community with use cases of cloud computing The cloud infrastructure is shared by many organizations with same policy and compliance consideration because of this model is shared by bigger group this is further enable decreasing IT operational costs in contrast to private cloud It is best suited state level government departments that need to access the same data and applications Community cloud is also provides the capability to realize business process in the cloud and also high level of security and the cost of setting up community cloud is very cheap due to division of costs Management of community cloud can be outsourced to cloud
Cloud computing, one of the buzz words of 2008, allows you to store your files and folders in a “cloud” area on the internet, allowing you access to all of your files and folders wherever you are in the world- but you do need a physical device with internet access to access it. Mobile computing is taking a physical device with you. This could be a laptop or a mobile phone or some device which enables you to telework- working wherever you go because of the small size of the device you are using. Either way, there will be some drawbacks. I’m not going to focus on the positives too much, simply because being able to do work shouldn’t have to be a positive thing, rather something we should just be able to do without any concern.
INTRODUCTION A smart grid is a power network which is based on digital technology is used to supply power, via two-way digital communications. A smart grid system allows for monitoring, analysis, control and communication within the supply chain and helps improve efficiency, reduce energy consumption and cost, and maximize the transparency and reliability of the energy supply chain. The smart grid was introduced with the aim of overcoming the weaknesses of conventional electrical grids by using smart meters. Smart grid technology has been employed by two-way communication introduced for controlling the use of appliances by However, the widespread presence of Internet access in most homes has made the smart grid more practically reliable to implement. Smart grid is equally advantageous for
The disadvantage of repeater is that they reduce the performance of wireless LAN. A repeater must receive and retransmit each frame on the same radio channel, which doubles the amount of traffic needed for the network. Other than that, the problem of receiving duplicate data will happen when using multiple repeaters. Radio NICs Radio NIC is one of the major part in a wireless LAN that functions within the computer device and provides wireless connectivity. A wireless LAN radio NIC, also known as radio card, often implements the 802.11 standard.
Overall, overseeing assets, offices, and transmission in real-time. "Extensions" alludes to ways that an ERP environment can be "expanded" (supplemented) with outsider programs. It is in fact simple to uncover most ERP transactions to outside projects that do different things. On the other hand, on the grounds that ERP applications normally contain modern decides that control how information can be made or changed, some such capacities can be exceptionally hard to execute. This is the place outsider suppliers may go about as an augmentation of their IT group.
Keywords: Virtualization system; cloud computing; desktop virtualization. I. INTRODUCTION Desktop virtualization is an alternative to traditional desktop delivery.It refers to the virtualization of the computer desktop in order moving OS and application execution from local (to the user) device to a remote data center to achieve security and flexibility of the desktop usage. With this technology, we can connect or access to our individual desktop though the network by any device at anytime and anywhere.  Operating users node becomes a lightweight computer that handles only keyboard, mouse and monitor (as well as locally attached devices such as scanners and printers).
A computational Grid environment behaves like a virtual organization consisting of distributed resources. A virtual organization is a group of individuals and institutions defined by a definite set of sharing rules like what is shared, who is allowed to share, and the conditions under which the sharing takes place . As Grid computing focuses on dynamic and inter-organizational sharing, it enhances the existing distributed computing technologies. In most organizations, there are large amount of under-utilized computing resources. Considering a normal employee works 7 hours a day, 42 hours a week and there are 168 hours per week, most of the desktop machines remain busy less than 25% of the time.
Mobile cloud computing is a recent emerging technology in computer field. It is the integration of two major fields namely the mobile computing and cloud computing. Mobile computing is the process of operating many applications via mobile devices whereas cloud computing is the computational process via cloud or internet by provisioning the resources on demand and pay per use. The emergence of MCC has been proposed in order to overcome the major drawbacks in using mobile devices such as capacity, storage, computational speed, limited bandwidth, lifetime, and latency. MCC provides the solutions for these novel cons of the mobile computation.