A receiving host computes the checksum on a frame and determines that the frame is damaged．The frame is then discarded．At which

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问题 A receiving host computes the checksum on a frame and determines that the frame is damaged．The frame is then discarded．At which OSI layer did this happen?

选项 A、 session
B、 network
C、 physical
D、 data link
E、 transport

答案D

解析帧的处理是在二层

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A receiving host computes the checksum on a frame and determines that the frame is damaged．The frame is then discarded．At which

思科640802

思科认证

WhileAmericanshavebecomeevermoredependentuponelectricityintheirdailylives,acrucialpartofthesystemthatsupport

Progressivesoftensupportdiversitymandatesasapathtoequalityandawaytoleveltheplayingfield.Butalltoooftensuch

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Whatmakesagreathighschool?Americansthinkalotofthingsdo,fromoutstandingacademicsorasupportiveenvironmentfors

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