ITN 100 Chapter 3 Study Guide
Questions And Answers
/. The two basic types of media are: - Answer-✅guided and wireless (radiated)
/.A(n) __________ circuit is another name for a multipoint configuration. - Answer-
✅shared
/._____________ is not a form of modulation used to transform digital data into analog
signals. - Answer-✅synchronous time division
/.To get more "bandwidth" in a digital transmission, you must: - Answer-✅increase the
range of frequencies available for a transmission
/.When sending four bits at a time using frequency modulation, the number of different
frequency levels that would be needed would be _______. - Answer-✅16
/.The type of media usually installed on homes and businesses by the telephone
company is called ____________. - Answer-✅twisted pair
/.In which type of modulation is a 1 distinguished from a 0 by shifting the direction in
which the wave begins? - Answer-✅phase modulation
, /.Which of the following is not a key advantage of digital transmission? - Answer-✅It
permits only low transmission rates.
/.Microwave transmission: - Answer-✅all of the above
*is typically used for long distance data transmission
*is a type of high frequency radio communication
*does not require the laying of any cable
*requires a clear line-of-sight path
/.The earliest type of fiber optic systems were: - Answer-✅Multimode
/._____________ refers to the difference between the original analog data and the
approximation of that data using the techniques for translating from analog data to
digital signals. - Answer-✅quantizing error
/.When converting analog voice data to digital signals, Pulse Code Modulation typically
samples the incoming voice signal _______ times per second - Answer-✅8,000
/.How many bits are required to sample an incoming signal 4000 times per second
using 64 different amplitude levels? - Answer-✅6
/.Time (non-statistical) division multiplexing differs from frequency division multiplexing
because it: - Answer-✅splits the communication circuit vertically (with time slots)
instead of horizontally
/.Which of the following is the most secure wired media? - Answer-✅fiber optic cable
Questions And Answers
/. The two basic types of media are: - Answer-✅guided and wireless (radiated)
/.A(n) __________ circuit is another name for a multipoint configuration. - Answer-
✅shared
/._____________ is not a form of modulation used to transform digital data into analog
signals. - Answer-✅synchronous time division
/.To get more "bandwidth" in a digital transmission, you must: - Answer-✅increase the
range of frequencies available for a transmission
/.When sending four bits at a time using frequency modulation, the number of different
frequency levels that would be needed would be _______. - Answer-✅16
/.The type of media usually installed on homes and businesses by the telephone
company is called ____________. - Answer-✅twisted pair
/.In which type of modulation is a 1 distinguished from a 0 by shifting the direction in
which the wave begins? - Answer-✅phase modulation
, /.Which of the following is not a key advantage of digital transmission? - Answer-✅It
permits only low transmission rates.
/.Microwave transmission: - Answer-✅all of the above
*is typically used for long distance data transmission
*is a type of high frequency radio communication
*does not require the laying of any cable
*requires a clear line-of-sight path
/.The earliest type of fiber optic systems were: - Answer-✅Multimode
/._____________ refers to the difference between the original analog data and the
approximation of that data using the techniques for translating from analog data to
digital signals. - Answer-✅quantizing error
/.When converting analog voice data to digital signals, Pulse Code Modulation typically
samples the incoming voice signal _______ times per second - Answer-✅8,000
/.How many bits are required to sample an incoming signal 4000 times per second
using 64 different amplitude levels? - Answer-✅6
/.Time (non-statistical) division multiplexing differs from frequency division multiplexing
because it: - Answer-✅splits the communication circuit vertically (with time slots)
instead of horizontally
/.Which of the following is the most secure wired media? - Answer-✅fiber optic cable
