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Question

A dial-up connection uses a _____ to physically connect your computer to a phone line.

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

Dial-up Connection Component Explained

A dial-up connection requires specific hardware to bridge the gap between a digital computer and the analog phone line system.

Understanding the Connection Device

The primary device used to physically connect a computer to a phone line for a dial-up internet connection is a Modem.

  • Modem: This hardware device (MOdulator-DEModulator) translates the digital signals from your computer into analog signals that can be transmitted over standard phone lines. It also performs the reverse process, converting incoming analog signals back into digital data for your computer. This modulation and demodulation are essential for dial-up communication.

Why Other Options Are Incorrect

  • Ethernet: Ethernet is used for connecting devices within a local area network (LAN), typically using network cables, not for dial-up over phone lines.
  • Multiplexer: While involved in combining signals, it's not the specific device connecting a single computer to a phone line for dial-up access.
  • Hub: A hub is a networking device that connects multiple computers in a LAN, broadcasting data to all connected devices. It is not used for establishing a dial-up connection over a phone line.

Therefore, the modem is the essential component for a dial-up connection to link with the phone line.

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