The BSC protocol is used by a master device to communicate with a slave device $($station number $3).$

a$)$ The master selects the device, to ascertain whether it can send data to the device. Give the command sent by the master in ASCII as well as in hex. Write down the transmission in the format etc. for ASCII and $<55><10>$ etc. for hex. There is no need to show the $.$

b$)$ The device indicates that it is ready to accept data, and the master sends, as data, the word $$Hi$!($Without the inverted commas$).$ Write down the transmission $($frame$)$ in ASCII as well as hex. No need to show the $.$ For the checksum you may simply write $.$

How is data transparency achieved in DF$-1?$