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Much has been said about the mechanics of the ARPA Computer Network (ARPANET) and especially about the organization of its communications subnet. Until recently the main effort has gone into the implementation of an ARPANET user-level communications interface. Operating just above the communications subnet in ARPANET HOST Computers, this ARPANET interface… (More)
This study is presented as a competent treatment of the subject, worthy of publication. The Rand Corporation Youches for the quality of the research. without npcessarily Pndorsing the opinions and conclusions of the authors.
Application programs require specific I/O data formats that differ from program to program. One approach recently adopted for providing resource sharing of disparate programs is to develop specific dialogs for classes of programs. Each such program must then be retrofitted with one of the standard dialog interfaces. The DRS exhibits a different view of… (More)
The technology exists to produce systems for automated communication within one office or among separate offices. What does NOT exist is a methodology for making such systems EFFECTIVE and ATTRACTIVE for computer-naive users, attributes that should be considered highly important to the sucess of an office-automation system. This paper presents the… (More)
This paper describes a manual procedure for itemizing the service features of a computer network protocol. The procedure has been tested and refined several times. The testing is described here, along with analysis of test results and general observations. The authors conclude that, although the procedure now provides only partially satisfying results, such… (More)
After providing background information on protocol modeling, we then describe a linear programming model useful in protocol design. This is followed by a description of its use and some comments on its implementation.
*Wttä paper discusses some advantages of resource sharing through a netwo.'k of computers as compared to resource sharing through ether forms of timesharing services. The ARPA network of computers, sponsored by the Defense Advanced Research Projects Agency of the Department of Defense, is used as an example of large-scale resource sharing in a computer… (More)
The National Bureau of Standards has developed service and design specifications for transport and session protocols for use in computer system and network procurements. These protocols reside in layers four and five of the International Organization for Standardization's (ISO) Reference Model for Open Systems Interconnection. This paper describes the… (More)