A. Automatic
B. Half-duplex
C. Full-duplex
D. Simplex
Submitted by: Irfan Marwat
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
(Sponsored by Sir Tauqeer)
