A. ISDN
B. Modem
C. UDP
D. DSL
Explanation:
ISDN or Integrated Services Digital Network is a circuit-switched telephone network system that transmits both data and voice over a digital line.
A. ISDN
B. Modem
C. UDP
D. DSL
Explanation:
ISDN or Integrated Services Digital Network is a circuit-switched telephone network system that transmits both data and voice over a digital line.