Ch15 OS

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Module 15: Network Structures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
A Distributed System
Motivation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Network-Operating Systems ,[object Object],[object Object],[object Object]
Distributed-Operating Systems ,[object Object],[object Object],[object Object]
Distributed-Operating Systems (Cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Topology ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Network Topology
Network Types ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Network Types (Cont.) ,[object Object]
Network Types (Cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Communication Processors in a Wide-Area Network
Communication ,[object Object],[object Object],[object Object],[object Object],The design of a communication network must address four basic issues:
Naming and Name Resolution ,[object Object],[object Object],[object Object],[object Object],[object Object]
Routing Strategies ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Routing Strategies (Cont.) ,[object Object],[object Object],[object Object],[object Object]
Connection Strategies ,[object Object],[object Object],[object Object],[object Object]
Contention ,[object Object],[object Object],[object Object],[object Object],Several sites may want to transmit information over a link simultaneously. Techniques to avoid repeated collisions include:
Contention (Cont.) ,[object Object],[object Object]
Communication Protocol ,[object Object],[object Object],[object Object],The communication network is partitioned into the following multiple layers;
Communication Protocol (Cont.) ,[object Object],[object Object],[object Object],[object Object]
Communication Via ISO Network Model
The ISO Protocol Layer
The ISO Network Message
The TCP/IP Protocol Layers
Robustness ,[object Object],[object Object]
Failure Detection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Failure Detection (cont) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Reconfiguration ,[object Object],[object Object],[object Object],[object Object]
Design Issues ,[object Object],[object Object],[object Object],[object Object]
Networking Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
An Ethernet Packet
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