Computer Science > EXAM > dsac annex d study guide 2022 questions with complete answers (All)

dsac annex d study guide 2022 questions with complete answers

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alexander Graham Bell Correct Answer: furthered his fathers work on visible speech for the deaf. telephony Correct Answer: the technology associated with electronic transmission of voice, fax, an... d other info between distant parties telephone Correct Answer: a handheld device containing both a speaker or transmitter and a receiver telecommunication Correct Answer: the transmission of signs signals messages words writings images and sounds or information of any nature by wire radio optical or other electromagnic systems Telecommunications Correct Answer: -occurs when the exchange of information between communication participants includes the use of technology pbx purpose Correct Answer: save the cost of requiring a line for each user to the telephone company's central office pbx Correct Answer: office contains the switching equipment for routing phone calls. contains the equipment for controlling the sites that are connected to the PSTN Central Office. It functions as the central routing hub for telephone calls. switching office Correct Answer: the central routing hub for telephone calls tdm Correct Answer: office contains the switching equipment for routing phone calls. contains the equipment for controlling the sites that are connected to the PSTN Central Office. It functions as the central routing hub for telephone calls. two types of signals Correct Answer: analog and digital current Correct Answer: current can be defined as the amount of electrical signals flowing through the medium _ currents means _ means of transmission Correct Answer: higher faster analog signals Correct Answer: Continuous wave denoted by a sine wave loop start signaling Correct Answer: analog supervisory signaling provides way to indicated on/off hook [Show More]

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