In: Computer Science
Match the device or system with the correct type of signal and data.
Device/ System  | Data/ Signal  | 
Modem transmissions  | B. Digital data/analog encoding  | 
Ethernet  | 
  | 
AM/ FM radio  | D. Analog data/ Analog encoding  | 
PCM  | C. Analog data/ digital encoding  | 
The table is already matched , below are 4 types:
Data broadcasting using all waves can be 4 types:
| 
 Device/ System  | 
 Data/ Signal  | 
| 
 Modem transmissions  | 
 B. Digital data/analog encoding  | 
| 
 Ethernet  | 
 A. Digital data/ digital encoding  | 
| 
 AM/ FM radio  | 
 D. Analog data/ Analog encoding  | 
| 
 PCM  | 
 C. Analog data/ digital encoding  |