Question Bank.pdf - CS 6703 GRID AND CLOUD COMPUTING QUESTION BANK UNIT I \u2013 INTRODUCTION PART A 1 Define cloud computing Cloud computing is the

Question Bank.pdf - CS 6703 GRID AND CLOUD COMPUTING...

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CS 6703 GRID AND CLOUD COMPUTING REC CS 6703 GRID AND CLOUD COMPUTING - QUESTION BANK UNIT I INTRODUCTION PART - A 1. Define cloud computing Cloud computing is the delivery of computing as a service rather than a product, hereby shared resources, software, and information are provided to computers and other devices as a utility. 2. What is distributed computing? This is a field of computer science/engineering that studies distributed systems. A distributed system consists of multiple autonomous computers, each having its own private memory, communicating through a computer network. Information exchange in a distributed system is accomplished through message passing. A computer program that runs in a distributed system is known as a distributed program. The process of writing distributed programs is referred to as distributed programming. 3. Difference between distributed and parallel computing. Distributed Parallel Each processor has its own private memory (distributed memory). Information is exchanged by passing messages between the processors. All processors may have access to a shared memory to exchange information between processors. It is loosely coupled. It is tightly coupled An important goal and challenge of distributed systems is location transparency. Large problems can often be divided into smaller ones which are then solved concurrently. 4. What is mean by service oriented architecture? In grids/web services, Java, and CORBA, an entity is, respectively, a service, a Java object, and a CORBA distributed object in a variety of languages. These architectures build on the traditional seven Open Systems Interconnection (OSI) layers that provide the base networking abstractions. On top of this we have a base software environment, which would be .NET or Apache Axis for web services, the Java Virtual Machine for Java, and a broker network for CORBA. 5. What is High Performance Computing (HPC) (Apr/May 2017)
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CS 6703 GRID AND CLOUD COMPUTING REC Supercomputer sites and large data centers must provide high-performance computing services to huge numbers of Internet users concurrently. Because of this high demand, the Linpack Benchmark for high-performance computing (HPC) applications is no longer optimal for measuring system performance. The emergence of computing clouds instead demands high-throughput computing (HTC) systems built with parallel and distributed computing technologies. We have to upgrade data centers using fast servers, storage systems, and high-bandwidth networks. The purpose is to advance network-based computing and web services with the emerging new technologies. 6. Define peer-to-peer network. (Nov/Dec 2017) The P2P architecture offers a distributed model of networked systems. Every node acts as both a client and a server, providing part of the system resources. Peer machines are simply client computers connected to the Internet. All client machines act autonomously to join or leave the system freely. This implies that no master-slave relationship exists among the peers. No central coordination or central database is needed.
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