Download e-book for iPad: Advanced Lectures on Networking: NETWORKING 2002 Tutorials by Jon Crowcroft, Ian Pratt (auth.), Enrico Gregori, Giuseppe

By Jon Crowcroft, Ian Pratt (auth.), Enrico Gregori, Giuseppe Anastasi, Stefano Basagni (eds.)

This publication provides the revised model of 7 tutorials given on the NETWORKING 2002 convention in Pisa, Italy in may well 2002.
The teachers current a coherent view of the center matters within the following areas:
- peer-to-peer computing and communications
- cellular computing middleware
- community defense within the multicast framework
- categorizing computing resources in response to communique patterns
- comments on ad-hoc networking
- verbal exchange via digital technologies
- optical networks.

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Extra resources for Advanced Lectures on Networking: NETWORKING 2002 Tutorials

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The Coda middleware targets therefore fixed or, at most, nomadic systems, as it relies on a fixed core infrastructure. The unit of replication in Coda is a volume, that is, a collection of files that are stored on one server and form a partial subtree of the shared file system. The set of servers that contain replicas of a volume is its volume storage group (VSG). Disconnections are treated as rare events: when disconnected, the client can access only the data that was previously cached at the client site; upon reconnection modified files and directories from disconnected volumes are propagated to the VSG.

The Internet, using wireless communication. For a wide area network, data services of mobile telephone systems, such as GSM or UMTS, can be used. Inside a building, wireless LAN, such as Bluetooth, can be used instead. The Nexus communication layer acts as a broker to bridge the differences between existing heterogeneous networks. 42 C. Mascolo, L. Capra, and W. Emmerich Distributed data management: according to the demands of different location aware applications, spatial data have to be offered in multiple representations.

Connectivity may be asymmetric or symmetric depending, for instance, on the radio frequency of the transmission used by the hosts. Radio connectivity defines the clouds depicted in Figure 4 implying that connection is, by default, not transitive. However ad-hoc routing protocols have been defined [51] in order to overcome this limitation and allow routing of packets through mobile hosts. Mobile Computing Middleware 1 0 0 1 27 A 00000000 11111111 111111111 000000000 000000000 B 111111111 000000000 111111111 000000000 00111111111 11 00 11 00 11 00 11 00 11 00 11 00 C 11 Fig.

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