Show AutoQuiz is edited by Joel Don, ISA's community manager. This automation industry quiz question comes from the ISA Certified Control Systems Technician (CCST) program. Certified Control System Technicians calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables. Click this link for information about the CCST program. This question comes from the Level I study guide, Domain 3, Troubleshooting. Level I represents a professional who has a five-year total of education, training, and/or experience.  A device used to change an analog signal to a digital signal is most often called a:a) transducer In electronics, a digital-to-analog converter (DAC, D/A, D–A, D2A, or D-to-A) is a function that converts digital data (usually binary) into an analog signal (current, voltage, or electric charge). An analog-to-digital converter (ADC) performs the reverse function. The correct answer is D. Joel Don is an independent content marketing, social media and public relations consultant. Prior to his work in marketing and PR, Joel served as an editor for regional newspapers and national magazines throughout the U.S. He earned a master's degree from the Medill School at Northwestern University with a focus on science, engineering and biomedical marketing communications, and a bachelor of science degree from UC San Diego.
Nov 7, 2020 Last Updated: Nov 7, 2020 No Comments IT Questions Bank › Category: IT Essentials › Which device converts digital signals to analog signals and vice versa? Which device converts digital signals to analog signals and vice versa?
Explanation: Modems are used to connect computers to POTS analog lines. Hubs, routers, and switches work using digital signals at all times. More Questions: A+ 220-1001 Certification Practice Exam Please login or Register to submit your answer
Electronic signals in a telecommunications network can be analog or digital. A modem (abbreviated from MOdulation/DEModulation) is a translating device that can convert signals from digital to analog and back. Figure 7-5
Types of networks include:
Ethernet is the dominant LAN standard at the physical network level, specifying the physical medium to carry signals between computers; access control rules; and a standardized frame, or set of bits used to carry data over the system. LANS may use a client/server (in Windows, a domain network model) architecture or a peer-to-peer architecture (in Windows, a workgroup network model), in which computers exchange data without going through a separate server. Larger LANS may have multiple servers for different, specific purposes, such as print, Web, mail, or application servers. LANs have different topologies, ways of connecting their components. There are three major network topologies:
Microwave systems (terrestrial and satellite) transmit high-frequency radio signals and are used for high-volume, long-distance, point-to-point communications. Microwaves follow a straight line, and transmission stations or satellites are used as relay stations for long distance signals. Figure 7-7
Telecommunications transmission speed is represented in bits per second (bps). The number of cycles per second a medium can send is called hertz; the capacity of the channel, measured as the difference between the highest and lowest frequencies it can transmit, is called bandwidth. A number of services are available to organizations requiring broadband, or high-speed transmission, capabilities or access to the Internet, including:
Which device converts digital signals to analog signals?Modem used to converts digital signals to analog signals. It enables a computer to transmit data.
Does modem convert digitalA modem attached to a computer converts digital data to an analog signal that it uses to modulate a carrier frequency. This frequency is transmitted over a line, frequently as an audio signal over a telecommunications line, to another modem that converts it back into a copy of the original data.
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