1Encryption, compression and data format translation belong to the:ASession layerBApplication layerCTransport layerDPresentation layerView AnswerDiscussWorkspaceReportSaveEasy
2Which OSI layer frames data and detects errors on a single link?APhysical layerBData link layerCNetwork layerDSession layerView AnswerDiscussWorkspaceReportSaveEasy
3Port numbers are used at which OSI layer?ATransport layerBPhysical layerCNetwork layerDData link layerView AnswerDiscussWorkspaceReportSaveEasy
4Which device works at the data link layer?ARouterBHubCRepeaterDSwitchView AnswerDiscussWorkspaceReportSaveEasy
5Which OSI layer provides end-to-end reliability and flow control?ASession layerBTransport layerCNetwork layerDPhysical layerView AnswerDiscussWorkspaceReportSaveEasy