LESSON 1: DISTRIBUTED SYSTEMS CONTENTS 1.0 Aim and Objectives 1.1. Introduction 1.2. Organization 1.3. Goals and Advantages 1.4. Disadvantages 1.5. Architecture 1.6. Concurrency 1.7. Languages 1.8. Let us Sum UP 1.9. Lesson-End Activities 1.10. Points for Discussion 1.11. References 1.0. AIM AND OBJECTIVES At the end of this Lesson you will be able to understand the concept of Distributed Computing‚ organization of Distributed Computing‚ advantages and limitations of Distributed Computing
Premium Computer science Computer Grid computing
Distributed Systems 6. Name Services Werner Nutt 1 Naming Concepts Names = strings used to identify objects (files‚ computers‚ people‚ processes‚ objects) Textual names (human readable) – used to identify individual services‚ people • email address: Hans.Mair@inf.unibz.it • URL: www.google.com – or groups of people or objects • mailing lists: professors@unibz.it • mail domains (if there are several mail exchangers) 2 Naming Concepts (cntd) Numeric addresses (identify the location
Free Domain Name System
CUIT 406 Distributed System Lecturer: Mr. A. Gamundani Assignment: 1 Due Date: 23 September 2013 QUESTION 1 a) Differentiate between loosely coupled systems and tightly coupled systems. [6] Tightly coupled systems Loosely coupled
Premium Operating system
CHUKA UNIVERSITY DEPARTMENT OF COMPUTER SCIENCE COMP 414:DISTRIBUTED ASSIGNMENT 1‚ DUE DATE 31/01/2014 (a) With examples describe Access‚ Location and Migration transparency in a distributed system. (4mks) Access Transparency: Clients should be unaware of the distribution of the files. The files could be present on a totally different set of servers which are physically distant apart and a single set of operations should be provided to access these remote as well as the local files. Applications
Premium Client-server Operating system Domain Name System
dynamically‚ as needed. The central aim of having multiple threads of execution is to maximize the degree of concurrent execution between operations. Operating system architecture There are two key examples of kernel design: the so-called monolithic and microkernel approaches: Monolithic: It is massive – it performs all basic operating system functions and takes up in the order of megabytes of code and data – and that it is undifferentiated Microkernel: The kernel provides only the most basic
Premium Object-oriented programming Java Object
Geoffrey Banks POS/355 Paul Rouk April 15‚ 2013 Distributed Systems According to Andrew Tanenbaum “A distributed system is a collection of computers that appear to its users as a single coherent system.” (http://www.cs.helsinki.fi/u/alanko/hj/K06/kalvokopiot/ch1_p6.pdf) Almost every current company uses distributed systems connected to servers and even larger databases. Each of these companies connects their organization and its information through local area networks also connected through
Premium Computer Personal computer
Explain the purpose of an operating system Process Management A multitasking operating system may give the appearance that a lot of processes are running concurrently/simultaneously‚ this is not true as only one process can be executing at any one time on a single-core CPU‚ unless on a multi-core or similar technology. Processes are often called tasks in embedded operating systems. The function of the task or process is something that takes up time‚ as opposed to memory‚ which is ’something that
Premium Operating system File system
Failures that May Occur in a Distributed Systems Robert Marler POS/355 September 1‚ 2014 Kelvin Upson Failures that May Occur in a Distributed Systems A distribution systems is a collection of processors that have a common goal for their system. Some examples would be SOA-based systems‚ massively multiplayer online games and peer-to-peer applications. The distributed system is software systems in which components located on network computers. This systems communicate and coordinate through
Premium Failure Database Database management system
Failures in a Distributed System Paper Phyllis Lenoir POS/355 November 19‚ 2012 Asho Rao A distributed system is an application that executes a collection of protocols to coordinate the actions of multiple processes on a network‚ where all component work together to perform a single set of related tasks. A distributed system can be much larger and more powerful given the combined capabilities of the distributed components‚ than combinations of stand-alone systems. But it’s not easy - for a
Premium Failure Peer-to-peer Causality
Distributed File System Abstract A method of storing and accessing files based in a Client/Server Architecture. In a distributed file system‚ one or more central servers store files that can be accessed‚ with proper authorization rights‚ by any number of remote clients in the network. Much like an operating system organizes files in a hierarchical file management system‚ the distributed system uses a uniform naming convention and a mapping scheme to keep track of where files are located. When
Free File system Computer file