tailieunhanh - Lecture Operating system concepts (Sixth ed) - Chapter 15: Network structures

Lecture Operating system concepts (Sixth ed) - Chapter 15: Network structures. The main contents of this chapter include all of the following: Background, topology, network types, communication, communication protocol, robustness, design strategies. | Module 15 Network Structures Background Topology Network Types Communication Communication Protocol Robustness Design Strategies Operating System Concepts Silberschatz Galvin and Gagne 2002 Motivation Resource sharing sharing and printing files at remote sites processing information in a distributed database using remote specialized hardware devices Computation speedup - load sharing Reliability - detect and recover from site failure function transfer reintegrate failed site Communication - message passing Operating System Concepts Silberschatz Galvin and Gagne 2002 Network-Operating Systems Users are aware of multiplicity of machines. Access to resources of various machines is done explicitly by Remote logging into the appropriate remote machine. Transferring data from remote machines to local machines via the File Transfer Protocol FTP mechanism. Operating System Concepts Silberschatz Galvin and Gagne 2002 Distributed-Operating Systems Users not aware of multiplicity of machines. Access to remote resources similar to access to local resources. Data Migration - transfer data by transferring entire file or transferring only those portions of the file necessary for the immediate task. Computation Migration - transfer the computation rather than the data across the system. Operating System Concepts Silberschatz Galvin and Gagne .