dsac annex d study guide 2022 questions with
complete answers
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,
and 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
complete answers
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,
and 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
