220-801 · Question #412
Which of the following Internet connection types uses analog transmission? (Select TWO).
The correct answer is A. DSL B. Dial-up. Both DSL and Dial-up transmit data using analog signals over the traditional PSTN (Public Switched Telephone Network) copper phone lines. Dial-up uses a modem to modulate/demodulate analog signals at low frequencies. DSL also uses analog modulation techniques (e.g., DMT) across…
Question
Which of the following Internet connection types uses analog transmission? (Select TWO).
Options
- ADSL
- BDial-up
- CIDSN
- DWiMAX
- ESatellite
How the community answered
(28 responses)- A93% (26)
- D4% (1)
- E4% (1)
Explanation
Both DSL and Dial-up transmit data using analog signals over the traditional PSTN (Public Switched Telephone Network) copper phone lines. Dial-up uses a modem to modulate/demodulate analog signals at low frequencies. DSL also uses analog modulation techniques (e.g., DMT) across the same copper telephone infrastructure, just at higher frequencies to achieve broadband speeds. ISDN is a fully digital telephone service. WiMAX and Satellite are digital wireless technologies that do not use analog phone line transmission.
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