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Семиуровневая модель OSI Обслуживание, ориентированное на установление логического соединения (иногда называемое Co ec io -Orie ed e work Service - CO S) описывается в ISO 8208 (X.25 Packe -Level Pro ocol - Протокол пакетного уровня X.25, иногда называемый Co ec io -Mode e work Pro ocol - CM P) и ISO 8878 (в котором описывается, как пользоваться ISO 8208, чтобы обеспечить ориентированные на установление логического соединения услуги OSI). Дополнительный документ ISO 8881 описывает, как обеспечить работу Протокола пакетного уровня X.25 в локальных сетях IEEE 802. OSI также определяет несколько протоколов маршрутизации, которые рассмотрены ниже. В дополнение к уже упоминавшимся спецификациям протоколов и услуг, имеются другие документы, связанные с сетевым уровнем OSI, в число которых входят: ISO 8648 На этот документ обычно ссылаются как на "внутреннюю организацию сетевого уровня" (i er al orga iza io of he e work level - IO L). Он описывает, каким образом можно разбить сетевой уровень на три отдельных различимых друг от друга подуровня, чтобы обеспечить поддержку для различных типов подсетей. | |
![]() Грызунок сделан из безопасного пищевого силикона, он выполняет роль прорезывателя для зубов. Бусины грызунка достаточно мягкие и очень 392 руб Раздел: Силиконовые ![]() Сейчас уже невозможно представить жизнь человечества без электричества. Для обеспечения людей электричеством работают огромные 452 руб Раздел: Физические опыты ![]() Обладает высокой однородностью цвета и точной нарезкой листа. Применяется для печати на копировально-множительной технике, лазерных и 462 руб Раздел: Формата А4 и меньше | ![]() Quinn R. Oxford University Press Oxford Read and Discover 335 руб | ![]() Oxford Read and Imagine graded readers are at eight levels (Starter, Beginner, and Levels 1 to 6) for students from age 4 and older. Oxford University Press Oxford Read and Imagine 433 руб |
![]() Oxford University Press Oxford Read and Discover 591 руб | ![]() New non-fiction graded readers for primary - 8-year-olds and up. Cross-curricular topics and colour photos make learning English through other subjects exciting. Oxford University Press Oxford Read and Discover 583 руб |
![]() Oxford University Press Oxford Read and Discover 618 руб | ![]() Why is exercise good for you? Oxford University Press Oxford Read and Discover 618 руб |
![]() Listen and read to discover all about favorite free-time activities around the world . . . Where is dog sledding popular? Oxford University Press Oxford Read and Discover 645 руб | ![]() Oxford University Press Oxford Read and Discover 284 руб |
![]() The readers are graded at four levels, from 3 to 6, suitable for students from age 8 and older. Oxford University Press Oxford Read and Discover 577 руб | ![]() Oxford University Press Oxford Read and Imagine 419 руб |
![]() Bladon R. Oxford University Press Oxford Read and Discover 335 руб | ![]() The World of Science and Technology The Natural World The World of Arts and Social Studies Also available for each reader: * Activity Book * Audio CD Pack (Reader and Audio CD) * Teacher' s Notes and CLIL guidance . The Activity Book Oxford University Press Oxford Read and Discover 577 руб |
![]() 630 руб | ![]() Read and discover all about the sky. Oxford University Press Oxford Read and Discover 569 руб |
![]() Two new levels for younger or lower-level students. 591 руб | ![]() These motivating non-fiction readers are rich in content and beautifully illustrated. Oxford University Press Oxford Read and Discover 530 руб |
![]() What shapes can you see in art? Northcott R. Oxford University Press Oxford Read and Discover 577 руб | ![]() Read and discover all about wheels. Sved R. Oxford University Press Oxford Read and Discover 577 руб |
![]() This series of non-fiction readers provides interesting and educational content, with activities and project work. Spilsbury L. Oxford University Press Oxford Read and Discover 577 руб | ![]() Read and discover all about favorite free-time activities around the world. . . Where is dog sledding popular? Penn J. Oxford University Press Oxford Read and Discover 577 руб |
![]() Picture Dictionary (levels 3 and 4) and Glossary (levels 5 and 6) offer extra support. Jacqueline M. Oxford University Press Oxford Read and Discover 591 руб | ![]() Fascinating information in carefully graded language appeals to a broad range of students and supports English across the curriculum, making the series perfect for CLIL (Content and Language Integrated Bladon R. Oxford University Press Oxford Read and Discover 591 руб |
![]() They offer great stories to read and enjoy. Oxford University Press Oxford Read and Imagine 372 руб | ![]() At Levels Starter and Beginner, this audio is free to download from below for Oxford Teachers' Club members, or from the Student' s Site at. At Levels 1 to 6, audio is available in CD packs for every Oxford University Press Oxford Read and Imagine 372 руб |
![]() At Levels Starter and Beginner, this audio is free to download from below for Oxford Teachers' Club members, or from the Student' s Site at. At Levels 1 to 6, audio is available in CD packs for every Oxford University Press Oxford Read and Imagine 545 руб | ![]() At Levels 1 to 6, every storybook reader links to an Oxford Read and Discover non-fiction reader. Oxford University Press Oxford Read and Imagine 629 руб |
![]() At Levels 1 to 6, every storybook reader links to an Oxford Read and Discover non-fiction reader. Oxford University Press Oxford Read and Imagine 372 руб | ![]() Activities provide Cambridge Young Learner Exams preparation. Oxford University Press Oxford Read and Imagine 315 руб |
![]() At Levels Starter and Beginner, this audio is free to download from below for Oxford Teachers' Club members, or from the Student' s Site at www. oup. com/elt/readandimagine. Oxford University Press Oxford Read and Imagine 305 руб | ![]() Oxford Read and Imagine graded readers are at eight levels (Starter, Beginner, and Levels 1 to 6) for students from age 4 and older. Shipton P. Oxford University Press Oxford Read and Imagine 579 руб |
![]() They offer great stories to read and enjoy. Oxford University Press Oxford Read and Imagine 419 руб | ![]() Activities provide Cambridge Young Learner Exams preparation. Oxford University Press Oxford Read and Imagine 315 руб |
![]() Activities provide Cambridge Young Learner Exams preparation. Oxford University Press Oxford Read and Imagine 372 руб | ![]() They offer great stories to read and enjoy. Oxford University Press Oxford Read and Imagine 315 руб |
![]() Audio in a choice of American and British English is available for every reader. Shipton P. Oxford University Press Oxford Read and Imagine 315 руб | ![]() Activities provide Cambridge Young Learner Exams preparation. Shipton P. Oxford University Press Oxford Read and Imagine 433 руб |
![]() Young learners follow Rosie, Ben and Grandpa on their adventures and grow up with the characters as they read and learn. 591 руб | ![]() Listen while you read with the included Audio CD. Today Ben' s wearing new glasses. What happens when he plays ball with his friends in the school playground? And what happens when Grandpa makes Ben some fantastic new glasses? Oxford Read and 577 руб |
![]() At Levels Starter and Beginner, this audio is free to download from below for Oxford Teachers' Club members, or from the Student' s Site. At Levels 1 to 6, audio is available in CD packs for every Shipton P. Oxford University Press Oxford Read and Imagine 315 руб | ![]() They offer great stories to read and enjoy. Shipton P. Oxford University Press Oxford Read and Imagine 315 руб |
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