Chapter 1: Distributed Systems: What is a distributed system?

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Heterogeneity � Heterogeneity of � networks � computer hardware � operating systems � programming languages � implementations of different developers � Portability, interoperability � Mobile code, adaptability (applets, agents) � Middleware (CORBA etc) � Degree of transparency? Latency? Location-based services? Kangasharju: Distributed Systems October 23, 08 28
Challenges for Openness � Openness facilitates � interoperability, portability, extensibility, adaptivity � Activities addresses � extensions: new components � re-implementations (by independent providers) � Supported by Kangasharju: Distributed Systems � public interfaces � standardized communication protocols October 23, 08 29
Page 1 and 2: Chapter 1: Distributed Systems: Wha
Page 3 and 4: Kangasharju: Distributed Systems Co
Page 5 and 6: Exercises � Weekly exercises: �
Page 7 and 8: Questions? Kangasharju: Distributed
Page 9 and 10: Kangasharju: Distributed Systems De
Page 11 and 12: Examples of Distributed Systems Int
Page 13 and 14: Mobile Ad Hoc -Networks Problems, e
Page 15 and 16: Examples of Distributed Systems, 4
Page 17 and 18: Goals and challenges for distribute
Page 19 and 20: Kangasharju: Distributed Systems Ch
Page 24 and 25: Figure 2.11 Timing failures Class o
Page 26 and 27: Concurrency � Concurrency: Kangas
Page 32 and 33: Challenges for Security � Securit
Page 34 and 35: Defeating Security Threats � Tech
Page 36 and 37: Challenges: Design Requirements �
Page 38 and 39: Hardware Concepts � Characteristi
Page 40 and 41: Multiprocessors (1) 1.7 A bus-based
Page 42 and 43: 1-9 Homogeneous Multicomputer Syste
Page 44 and 45: Software Concepts System Descriptio
Page 46 and 47: History of distributed systems �
Page 48 and 49: 1.14 Multicomputer Operating System
Page 50 and 51: Distributed Shared Memory Systems (
Page 52 and 53: 1-19 Network Operating System (1) K
Page 54 and 55: 1.21 Kangasharju: Distributed Syste
Page 56 and 57: 1-22 Positioning Middleware General
Page 58 and 59: Distributed application Middleware
Page 60 and 61: 1.23 Middleware and Openness Kangas
Page 62 and 63: More examples on distributed softwa
Page 64 and 65: Client-Server � Client-server mod
Page 66 and 67: A sample server. Kangasharju: Distr
Page 68 and 69: 1-28 Kangasharju: Distributed Syste
Page 70 and 71: Multitiered Architectures (2) Clien
Page 72 and 73: � Mobile code Variations on the C
Page 74 and 75: Variations on the Client-Server mod
Page 76 and 77: Other Architectures � Andrews par

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