FOUR $(4)$ channels of data are multiplexed using Time$-$Division Multiplexing. If $64$ bits of data

are multiplexed per channel and each channel transmits data at a speed of $2$ Mbps$,$

determine;

i$.$ Size of the frame.

ii$.$ Rate of the frame.

iii. Duration of a frame.

iv$.$ Prove that the bit rate of the transmission line is $8$ Mbps