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This article lists protocols, categorized by the nearest layer in the Open Systems Interconnection model. This list is not exclusive to only the OSI protocol family. Many of these protocols are originally based on the Internet Protocol Suite (TCP/IP) and other models and they often do not fit neatly into OSI layers.
A communication system with a message protocol and models for the communication stack in each node (capable of hosting distributed applications (KNX Common Kernel); and; Models for the realization of these elements when developing actual devices to be mounted and linked in an installation.
A formal specification for this protocol exists in the TAP::Spec::Parser and TAP::Parser::Grammar modules. The behavior of the Test::Harness module is the de facto TAP standard implementation, along with a writeup of the specification on TestAnything.org. [4] A project to produce an IETF standard for TAP was initiated in August 2008, at YAPC ...
The Oxford Test of English and Oxford Test of English for Schools certify at A2, B1, and B2 levels. The Oxford Test of English Advanced certifies at B2 and C1. Test takers who do not achieve a certified CEFR level receive an indicative ‘Below’ level. The table below shows the standardised scores, CEFR levels and indicative ‘Below’ levels:
OSI model Layer Protocol data unit (PDU) Function [3] Host layers 7 Application: Data: High-level protocols such as for resource sharing or remote file access, e.g. HTTP. 6 Presentation: Translation of data between a networking service and an application; including character encoding, data compression and encryption/decryption: 5 Session
A Remote Terminal Unit for the DNP3 protocol can be a small, simple embedded device, or it can be a large, complex rack filled with equipment. The DNP User Group has established four levels of subsets of the protocol for RTU compliance. The DNP Users Group has published test procedures for Levels 1 and 2, the simplest implementations.
The following YANG module example-sports shows a data model for team sports. The module declares a namespace and a prefix and imports the type library module ietf-yang-types before defining the type season. It then defines a container sports that includes a list of persons and a list of teams.
Protocol conformance testing checks that a given entity implementation conforms to the protocol specification. The conformance test cases are developed based on the protocol specification and are applicable to all entity implementations. Therefore standard conformance test suites have been developed for certain protocol standards. [3]