What are some open source cloud computing platform databases?

Correct Answer: Cloud data center doesn?t require experts to operate it, but it requires skilled people to see the maintenance, maintain the workloads and to keep the track of the traffic The labor cost is 6% of the total cost to operate the cloud data center Power distribution and cooling of the datacenter cost 20% of the total cost Computing cost is at the end and is the highest as it is where lots of resources and installation has to be done It costs the maximum left percentage

Correct Answer: During app launching, the system creates a main thread for the app and calls the app?s main function on that main thread The Xcode project's default main function hands over control to the UIKit framework, which takes care of initializing the app before it is run

Correct Answer: The UIKit framework is used to develop application?s user interface for iOS UIKit framework provides event handling, drawing model, windows, views, and controls specifically designed for a touch screen interface

Correct Answer: IOS 4 and above supports multi-tasking and allows apps to remain in the background until they are launched again or until they are terminated

Correct Answer: 1Map beautifully designed from the ground up (and the sky down) 2Integration of Facebook with iOS 3shared photo streams 4Passbook - boarding passes, loyalty cards, retail coupons, cinema tickets and more all in one place 5Facetime - on mobile network as wifi 6changed Phone app - *remind me later, *reply with message 7Mail - redesigned more streamline interface 8Camera with panorama

Correct Answer: 1 Zero infrastructure investment : Cloud architecture provide user to build large scale system with full hardware, machines, routers, backup and other components So, it reduces the startup cost of the business 2 Just-in-time Infrastructure : It is very important to scale the infrastructure as the demand rises This can be done by taking cloud architecture and developing the application in the cloud with dynamic capacity management 3 More efficient resource utilization : Cloud architecture provides users to use their hardware and resource more efficiently and utilize it in a better way This can be done only by applications request and relinquish resources only when it is needed (on-demand)

Correct Answer: There are four phases that basically gets involved in the cloud architecture: 1 Launch phase: it launches the basic services and makes the system ready for communication and for application building 2 Monitor phase: it monitors the services that is being launched and then manages them so that on demand the user will be able to get what he wants 3 Shutdown phase: it shutdown the services that are not required first and after all the services gets shutdown, and then it closes the system services 4 Cleanup phase: it clean up the left out processes and services that is being either broken or didn?t get shutdown correctly

Correct Answer: Amazon SQS is a message passing mechanism that is used for communication between different connectors that are connected with each other It also acts as a communicator between various components of Amazon It keeps all the different functional components together This functionality helps different components to be loosely coupled, and provide an architecture that is more failure resilient system

Correct Answer: - Multi-threading fetching in Amazon S3 is used to fetch the objects concurrently using the multiple threads and map the task so that fetching can be made simpler - It is not a good practice to increase the threading for a particular object as every node on the server has some bandwidth constraints - It provides user the ease with which they can upload the files and upload the threads in parallel - It provides high speed of data transfer and easy maintenance of the sever as well

Correct Answer: MapReduce is a software framework that was created by Google It`s prime focus was to aid in distributed computing, specifically large sets of data on a group of many computers The frameworks took its inspiration from the map and reduce functions from functional programming