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Question

A modem is connected to a:

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
phone line

Modem Connection Essentials

A modem is a crucial piece of hardware that enables communication between computers over long distances.

Modem Function: The primary role of a modem is to modulate and demodulate signals. It converts digital data from a computer into analog signals suitable for transmission over communication lines (like phone lines) and converts incoming analog signals back into digital data for the computer.

Device Connectivity

  • A modem directly connects to a phone line (or cable line, fiber optic, etc., depending on the type of modem).
  • This connection allows the modem to access the public switched telephone network (PSTN) or other network infrastructure.
  • This link is essential for establishing an internet connection or sending/receiving data remotely.

Therefore, a modem is fundamentally connected to a phone line to facilitate data communication.

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