How is mapreduce related to cloud computing?

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

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: 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: 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: 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: HotFix

Correct Answer: Sparse matrix, Index generation

Correct Answer: Direct method, Subtraction method, Modulo-Division method, Digit-Extraction method, Mid-Square method, Folding method, Pseudo-random method

Correct Answer: A spanning tree is a tree associated with a network All the nodes of the graph appear on the tree once A minimum spanning tree is a spanning tree organized so that the total edge weight between nodes is minimized

Correct Answer: SELECT DISTINCT(salary) FROM emp as e1 WHERE (3) = (SELECT COUNT(DISTINCT(salary)) FROM emp as e2 WHERE e1salary <= e2salary)