试题详情
- 单项选择题A receiving host computes the checksum on a frame and determines that the frame is damaged.Theframe is then discarded.At which OSI layer did this happen?()
- A、session 
- B、network 
- C、physical 
- D、data link 
- E、transport 
- D
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A、session
B、network
C、physical
D、data link
E、transport
关注下方微信公众号,在线模考后查看
