問題文
A capture of an 802.15.4 data frame shows the PAN ID compression bit set to one, and only one PAN identifier present in the addressing fields. Which pair states what that bit tells the receiver to expect and what the receiver then does?
選択肢
- The frame control field can leave out one repeated value, so the compression flag omits the source addresses and the receiving device copies the shown count in that specification.
- The frame control field can leave out one repeated value, so the compression flag omits the source identifier and the receiving device copies the shown identity in that specification.
- The frame control field can leave out one repeated value, so the compression flag omits the source identifier and the receiving device copies the shown count in that specification.
- The frame control field can leave out one repeated value, so the compression flag omits the source addresses and the receiving device copies the shown identity in that specification.