These systems beep when the user receives a short alphanumeric message, and are often used for communicating with mobile workers:
A. low-earth orbit.
B. paging.
C. microbrowser.
D. RFID
Answer:B
These systems beep when the user receives a short alphanumeric message, and are often used for communicating with mobile workers:
A. low-earth orbit. B. paging. C. microbrowser. D. RFID