Open Systems Handbook by Alan R. Simon and Tom Wheeler (Auth.)

By Alan R. Simon and Tom Wheeler (Auth.)

An entire advisor to open platforms networking, the method of linking disparate LANs to accomplish greatest community portability and cross-platform interoperability. The booklet could be a useful reference software for the LAN supervisor, offering the knowledge essential to enforce and software program for powerful open platforms networking

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Example text

The fact that a relatively quiet desktop unit can reside in the office is partially attributable to developments in power supply units that have eliminated the need for high-speed fans. Advances in disk drives and high-performance, low-noise i n p u t / o u t p u t devices have also improved the environment at individual desktop computers. Modern systems use basic building blocks to create different capacity processors. Scalability is achieved through the use of microprocessor units to build different nodes in open systems.

Scan programs, which can detect and eliminate most common viruses, are available. In the world of massive parallel processing, good viruses can have a beneficial effect of propagating data and code through multiple processors. In the worse case, unprotected computers can become the targets for destruction. Viruses can be stopped using virus examination programs, but there is no foolproof technique. Open systems have made the security task more complex, as individual workstations have an autonomy of action that can crash the system (Murray, 1984).

The operating system that is most important in support plans for open systems is UNIX (Norton and Hahn, 1991), which was originally developed at Bell Laboratories by Kernighan and Ritchie (Bach, 1986) in 1972. The original UNIX is a derivative of the MULTICS work performed at MIT in the 1960s. The system was widely used earlier at AT&T locations and released to the academic community, which enhanced the system as they expanded support to other processors. Wide academic acceptance helped to popularize the system.

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