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.The frame is then discarded.At which OSI layer did this happen?（）
A、session
B、network
C、physical
D、data link
E、transport
- D
关注下方微信公众号，在线模考后查看
热门试题
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