Answered: Which of the following devices…

Which of the following devices modulates digital signals into analog signals that can be sent over traditional telephone lines? a. Router b. Gateway c. Switch d. Modem

Comptia A+ Core 1 Exam: Guide To Computing Infrastructure (mindtap Course List)

10th Edition

ISBN:9780357108376

Author:Jean Andrews, Joy Dark, Jill West

Publisher:Jean Andrews, Joy Dark, Jill West

Chapter9: Supporting Mobile Devices

Section: Chapter Questions

Problem 17TC

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Concept explainers

Wireless Transmission Technology

If communication is done between two mediums without using a cable or wire, then it is referred to as wireless communication. Wireless communication is a type of data communication in which the transmission of information takes place without the help of a wire or cable. The device works by broadcasting electromagnetic signals through the air, atmosphere, or physical environment. The sender device generates electromagnetic signals (wireless signals) which is received by several intermediary stations before it reaches the destination device. The destination station receives and processes these signals. An electrical circuit with antenna, which is capable of changing digital data to wireless signal, can act as a transmitter (sender) and a circuit converts wireless signal to digital data with antenna can be a receiver.

Question

7.	Which of the following devices modulates digital signals into analog signals that can be sent over traditional telephone lines?
a.	Router
b.	Gateway
c.	Switch
d.	Modem

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