N10-005 Question #671: Real Exam Question with Answer & Explanation

The correct answer is A: Dialup. POTS (Plain Old Telephone System) refers to the traditional analog copper telephone network. Both Dialup and DSL use this existing copper phone line infrastructure: Dialup uses a modem to convert digital data to analog signals and transmits over the voice-grade POTS line at up to

Question

Which of the following WAN technology types are mainly used over POTS lines to provide Internet connectivity? (Select TWO).

Options

ADialup
BDSL
CSONET
DCable
EWiMAX
FLTE

Explanation

POTS (Plain Old Telephone System) refers to the traditional analog copper telephone network. Both Dialup and DSL use this existing copper phone line infrastructure: Dialup uses a modem to convert digital data to analog signals and transmits over the voice-grade POTS line at up to 56 Kbps; DSL (Digital Subscriber Line) also uses copper phone lines but transmits digital signals at higher frequencies, achieving much faster speeds while allowing simultaneous voice use. SONET (C) is a high-speed fiber optic standard. Cable (D) uses coaxial TV cable infrastructure. WiMAX (E) and LTE (F) are wireless broadband technologies, unrelated to phone lines.

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