17-Nov-2015 05:39

Validating identy network

IPTV service quality for thousands of individual subscribers under real-world triple play network conditions -- allowed Juniper to validate the performance of its IPTV and Multiplay solutions in a highly scaled and dynamic network environment.Xerox Network Systems (XNS) is a computer networking protocol suite developed by Xerox within the Xerox Network Systems Architecture.

XNS predated and influenced the development of the Open Systems Interconnection (OSI) networking model, and was very influential in local area networking designs during the 1980s.XNS added the concept of a network number, allowing larger networks to be constructed from multiple smaller ones, with routers controlling the flow of information between the networks.The protocol suite specifications for XNS were placed in the public domain in 1977.This helped XNS become the canonical local area networking protocol, copied to various degrees by practically all networking systems in use into the 1990s.XNS was used unchanged by 3Com's 3+Share and Ungermann-Bass's Net/One.It was also used, with modifications, as the basis for Novell Net Ware, and Banyan VINES.

XNS was used as the basis for the Apple Net system, but this never sold; a number of XNS's solutions to common problems were used in Apple Net's replacement, Apple Talk. The Physical and Data Link layers of the OSI model correspond to the Physical layer (layer 0) in XNS, which was designed to use the transport mechanism of the underlying hardware and did not separate the data link.

Specifically, XNS's Physical layer is really the Ethernet local area network system, also being developed by Xerox at the same time, and a number of its design decisions reflect that fact.

It had little impact on TCP/IP, however, which was designed earlier.

XNS was developed by the Xerox Systems Development Department in the early 1980s, who were charged with bringing Xerox Parc's research to market.

XNS was based on the earlier (and equally influential) PARC Universal Packet (PUP) suite from the late 1970s.

Some of the protocols in the XNS suite were lightly modified versions of the ones in the Pup suite.

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  1. "I liked your voice" "What are you wearing" "which hand" and that sort of thing. The theory in psychology is that a large portion of communication is nonverbal and an even larger portion of this is actually specifically facial.