What are the uses of Amazon web services?

Correct Answer: Service oriented architecture (SOA) is an architectural style that supports service oriented methodology that is being added in the cloud architecture as a mandatory component Cloud architecture support the use of on-demand access to resources and it provides lots of other facilities that are being found in SOA as well SOA makes these requirements optional to use But, to get the full functionality and more performance based efficiency there is a requirement for the mixture of SOA and cloud architecture

Correct Answer: - Cloud architecture uses simple APIs to provide easily accessible services to the user through the internet medium - It provides scale on demand feature to increase the industrial strength - It provides the transparency between the machines so that users don?t have to worry about their data Users can just perform the functionality without even knowing the complex logics implemented in cloud architecture - It provides highest optimization and utilization in the cloud platform

Correct Answer: Cloud architecture provide large pool of dynamic resources that can be accessed any time whenever there is a requirement, which is not being given by the traditional architecture In traditional architecture it is not possible to dynamically associate a machine with the rising demand of infrastructure and the services Cloud architecture provides scalable properties to meet the high demand of infrastructure and provide on-demand access to the user

Correct Answer: It depends on the type of business that demands a cloud setup Suppose if the subscription on a public cloud for an application that is to be deployed on OS images is proving to be more costly then to buy some new datacenters and maintain them Then obviously the a private cloud has to be setup instead of a public cloud This public clouds follow utility billing methodology as electricity bill for example

Correct Answer: The hypervisor is a virtual machine monitor (VMM) that manages resources for virtual machines The name hypervisor is suggested as it is a supervisory tool for the virtual machines There are mainly two types of hypervisors : - Type-1: the guest Vm runs directly over the host hardware, eg Xen, Hyper-V, VmWare ESXi - Type-2: the guest Vm runs over hardware through a host OS, eg Kvm, Oracle virtualbox

Correct Answer: Every architecture rely on a database that is easy to maintain and gets easily configured Amazon uses the database by the name SimpleDB This is the database that is used for cloud architecture to track the statuses of the components The component of the system are asynchronous and discrete, it requires capturing the state of the system so that in any failure the user can easily revert back to its normal configuration SimpleDB is schema-less database and there is no need to define the structure before the creation of any data Every controller in the database defines their own structure and link the data to a job

Correct Answer: Amazon S3 provides uploading of large files and retrieve small offsets for end-to-end transfer data rates The large file gets stored into small files that are smaller in size Amazon S3 stores multiple of files together in a bundle or in a compressed form, For example in gzip or gz format and then convert them into Amazon S3 objects The files get uploaded on the Amazon server by the use of FTP or another protocol and then retrieved through the HTTP GET request The request includes the defined parameters like URL, offset (byte-range) and size (length)

Correct Answer: It enables SQL server to address diverse data sources like OLE DB similarly It allows Remote server access and has the ability to issue distributed queries, updates, commands and transactions

Correct Answer: UNION selects only distinct values whereas UNION ALL selects all values and not just distinct ones

Correct Answer: Only one column can exist per table that is attached with ROWGUIDCOL property One can then use $ROWGUID instead of column name in select list