Engineering and Tech B Unit #1 -
Communications Technologies Exam
Questions and Answers Graded A+
This was the first breakthrough technology to provide transmission of information
via electrical means. - Correct answer-Telegraph
Starting from about 1840, America was becoming wired for: - Correct answer-
telegraph and electrical power technology
The purpose of Alexander Graham Bell's telephone invention was to - Correct
answer-transmit and receive multiple voice tones over wire
Telephones were initially ______________ communications systems - Correct
answer-point to point
Telephone networks are sophisticated and built for - Correct answer-all of these -
- call switching and call routing
- reliability
- redundancy
, Guglielmo Marconi was a clear leader in the wireless field with many solid
accomplishments. In 1896 he patented the - Correct answer-wireless telegraph
Wireless technologies have enabled - Correct answer-all of these -
- long distance communications with terrestrial microwave systems and satellite
systems
- television and radio broadcast
- modern radio and wireless applications
A byproduct of Thomas Edison's research and development for the filament light
bulb was the development of the - Correct answer-Vacuum tube
The vacuum tube was used for - Correct answer-both a and b -
- conversion of alternating current (AC) signal to a direct current (DC) signal
- amplification
The transistor was developed by - Correct answer-Bell Laboratories
Transistors are used - Correct answer-all of the above -
- for amplification
- for switching circuitry
- for improving reliability over vacuum tubes
Communications Technologies Exam
Questions and Answers Graded A+
This was the first breakthrough technology to provide transmission of information
via electrical means. - Correct answer-Telegraph
Starting from about 1840, America was becoming wired for: - Correct answer-
telegraph and electrical power technology
The purpose of Alexander Graham Bell's telephone invention was to - Correct
answer-transmit and receive multiple voice tones over wire
Telephones were initially ______________ communications systems - Correct
answer-point to point
Telephone networks are sophisticated and built for - Correct answer-all of these -
- call switching and call routing
- reliability
- redundancy
, Guglielmo Marconi was a clear leader in the wireless field with many solid
accomplishments. In 1896 he patented the - Correct answer-wireless telegraph
Wireless technologies have enabled - Correct answer-all of these -
- long distance communications with terrestrial microwave systems and satellite
systems
- television and radio broadcast
- modern radio and wireless applications
A byproduct of Thomas Edison's research and development for the filament light
bulb was the development of the - Correct answer-Vacuum tube
The vacuum tube was used for - Correct answer-both a and b -
- conversion of alternating current (AC) signal to a direct current (DC) signal
- amplification
The transistor was developed by - Correct answer-Bell Laboratories
Transistors are used - Correct answer-all of the above -
- for amplification
- for switching circuitry
- for improving reliability over vacuum tubes
