ch10 - Chapter 10 Management of Network Functions...

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Chapter 10 Management of Network Functions Understanding Operating Systems, Fourth Edition
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Understanding Operating Systems, Fourth Edition 2 Objectives Objectives You will be able to describe: The complexities introduced to operating systems by network capabilities Network operating systems (NOS) compared to distributed operating systems (DO/S) How a DO/S performs memory, process, device, and file management How a NOS performs memory, process, device, and file management Important features of DO/S and NOS
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Understanding Operating Systems, Fourth Edition 3 History of Networks History of Networks Networks were created initially to share expensive hardware resources OSs were enhanced with network capabilities to give users easy access to centralized information resources Development of network operating system followed by the more powerful distributed operating system Use of distributed processing allows Even greater access to centralized information Users to work together to complete common tasks
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Understanding Operating Systems, Fourth Edition 4 Comparison of Network and Distributed Comparison of Network and Distributed Operating Systems Operating Systems Network Operating Systems (NOS): Gives local operating systems extended powers Handles interfacing details and coordinates remote processing Coordinates communications between local operating systems Limitation: Doesn’t take global control over memory management, process management, device management, or file management Sees them as autonomous local functions
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Understanding Operating Systems, Fourth Edition 5 Comparison of Network and Distributed Comparison of Network and Distributed Operating Systems Operating Systems (continued) (continued) Figure 10.1: A NOS environment
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Understanding Operating Systems, Fourth Edition 6 Comparison of Network and Distributed Comparison of Network and Distributed Operating Systems Operating Systems (continued) (continued) Distributed Operating Systems (DO/S): Need for global control of assets by OS led to the development of DO/S Provide a unified environment designed to optimize operations for the network as a whole Typically constructed with replicated kernel OS Network and intricacies are hidden from users so they can use network as single logical system
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Understanding Operating Systems, Fourth Edition 7 Comparison of Network and Distributed Comparison of Network and Distributed Operating Systems Operating Systems (continued) (continued) Figure 10.2: A DO/S environment
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Understanding Operating Systems, Fourth Edition 8 Comparison of Network and Comparison of Network and Distributed Distributed Operating Systems Operating Systems (continued) (continued) Table 10.1: Comparison of NOS and DO/S
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Understanding Operating Systems, Fourth Edition 9 DO/S Development DO/S Development Manages entire group of resources within the network in a global fashion Resource allocation based on negotiation and
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This note was uploaded on 10/20/2008 for the course IST 341 taught by Professor Woldering during the Fall '08 term at Cleveland State.

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ch10 - Chapter 10 Management of Network Functions...

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