Question 1

Advantages of fiber optic cable over copper cables include all of the following except _________	.

Accepted Answer

A)  faster data rates 
B)  immunity from EMI 
C)  lower cost 
D)  transmission over longer distances 
A)  faster data rates 
B)  immunity from EMI 
C)  lower cost 
D)  transmission over longer distances C

Question 2

A type of time division multiplexing that improves channel efficiency is _________.

Accepted Answer

A)  bit- interleaved 
B)  statistical 
C)  byte- interleaved 
D)  synchronous 
A)  bit- interleaved 
B)  statistical 
C)  byte- interleaved 
D)  synchronous B

Question 3

Serial- to- parallel and parallel- to- serial converters allow computers to communicate with external devices.

Accepted Answer

A) True 
 B)False  True

Question 4

Baud rate is another term for bit rate.

Accepted Answer

A) True 
 B)False

Question 5

The unwanted change in the shape of a waveform is referred to as modulation.

Accepted Answer

A) True 
 B)False

Question 6

A constellation map graphically displays _________.

Accepted Answer

A)  the data rate and frame size of a modulated signal 
B)  the phase and amplitude of a modulated signal 
C)  the baud rate and data efficiency for a modulated signal 
D)  the number of frames and detected errors for a modulated signal 
A)  the data rate and frame size of a modulated signal 
B)  the phase and amplitude of a modulated signal 
C)  the baud rate and data efficiency for a modulated signal 
D)  the number of frames and detected errors for a modulated signal

Question 7

Parallel data transmission _________.

Accepted Answer

A)  does not have problems with data skew 
B)  is typically faster than serial transmission 
C)  does not required reduced data rates to prevent errors 
D)  all of the above 
A)  does not have problems with data skew 
B)  is typically faster than serial transmission 
C)  does not required reduced data rates to prevent errors 
D)  all of the above

Question 8

"Return to zero"and "return to one"are types of synchronous communications that use separate clock and data lines.

Accepted Answer

A) True 
 B)False

Question 9

EMI stands for _________.

Accepted Answer

A)  excessive measured interference 
B)  electromagnetic interference 
C)  electromotive induction 
D)  external magnetic inductance 
A)  excessive measured interference 
B)  electromagnetic interference 
C)  electromotive induction 
D)  external magnetic inductance

Question 10

Time division multiplexing include all of the following except ___________.

Accepted Answer

A)  asynchronous 
B)  byte- interleaved 
C)  bit- interleaved 
D)  statistical 
A)  asynchronous 
B)  byte- interleaved 
C)  bit- interleaved 
D)  statistical

Question 11

Conversion of optical power to heat is one result of absorption in fiber optic cables.

Accepted Answer

A) True 
 B)False

Question 12

Time division multiplexing switches multiple data sources onto and off of a single transmission line in a specific sequence.

Accepted Answer

A) True 
 B)False

Question 13

Wireless communication in the infrared frequency band are limited to line- of- sight communications.

Accepted Answer

A) True 
 B)False

Question 14

Statistical time division multiplexing functions by using variable time slot assignments.

Accepted Answer

A) True 
 B)False

Question 15

Single- mode propagation has greater bandwidth than multimode propagation.

Accepted Answer

A) True 
 B)False

Question 16

An intersective method of pulse width modulation _________.

Accepted Answer

A)  compares the value of a pulse waveform intersecting the modulating signal to determine the pulse width 
B)  compares the value of a reference dc voltage intersecting the modulating signal to determine the pulse width 
C)  compares the value of a sawtooth waveform intersecting the modulating signal to determine the pulse width 
D)  compares the value of a reference sine wave intersecting the modulating signal to determine the pulse width 
A)  compares the value of a pulse waveform intersecting the modulating signal to determine the pulse width 
B)  compares the value of a reference dc voltage intersecting the modulating signal to determine the pulse width 
C)  compares the value of a sawtooth waveform intersecting the modulating signal to determine the pulse width 
D)  compares the value of a reference sine wave intersecting the modulating signal to determine the pulse width

Question 17

Attenuation in a coaxial cable will increase if _________.

Accepted Answer

A)  temperature increases 
B)  skin effect increases 
C)  cabling length decreases 
D)  cable resistance decreases 
A)  temperature increases 
B)  skin effect increases 
C)  cabling length decreases 
D)  cable resistance decreases

Question 18

Statistical time division multiplexing improves channel efficiency by ensuring that every time slot contains data.

Accepted Answer

A) True 
 B)False

Question 19

All of the following are methods for modulating analog signals with digital data except __________.

Accepted Answer

A)  ASK 
B)  FSK 
C)  QAM 
D)  SNR 
A)  ASK 
B)  FSK 
C)  QAM 
D)  SNR

Question 20

Synchronous time division multiplexing is inefficient because_________.

Accepted Answer

A)  data must be buffered before transmission 
B)  it requires the use of synchronous memory 
C)  the sender and receive clocks must be frequently resynchronized 
D)  time slots assigned to an inactive data source will not be used 
A)  data must be buffered before transmission 
B)  it requires the use of synchronous memory 
C)  the sender and receive clocks must be frequently resynchronized 
D)  time slots assigned to an inactive data source will not be used

Advantages of fiber optic cable over copper cables include all of the following except _________ .

A type of time division multiplexing that improves channel efficiency is _________.

Serial- to- parallel and parallel- to- serial converters allow computers to communicate with external devices.

Baud rate is another term for bit rate.

The unwanted change in the shape of a waveform is referred to as modulation.

A constellation map graphically displays _________.

Parallel data transmission _________.

"Return to zero"and "return to one"are types of synchronous communications that use separate clock and data lines.

EMI stands for _________.

Time division multiplexing include all of the following except ___________.

Conversion of optical power to heat is one result of absorption in fiber optic cables.

Time division multiplexing switches multiple data sources onto and off of a single transmission line in a specific sequence.

Wireless communication in the infrared frequency band are limited to line- of- sight communications.

Statistical time division multiplexing functions by using variable time slot assignments.

Single- mode propagation has greater bandwidth than multimode propagation.

An intersective method of pulse width modulation _________.

Attenuation in a coaxial cable will increase if _________.

Statistical time division multiplexing improves channel efficiency by ensuring that every time slot contains data.

All of the following are methods for modulating analog signals with digital data except __________.

Synchronous time division multiplexing is inefficient because_________.

Introductory Concepts

Number Systems, Operations, and Codes

Logic Gates

Boolean Algebra and Logic Simplification

Combinational Logic Analysis

Functions of Combinational Logic

Latches, Flip-Flops, and Timers

Shift Registers

Counters

Programmable Logic

Data Storage

Signal Conversion and Processing

Data Processing and Control

Integrated Circuit Technologies

Filters

Exam 13: Data Transmission

Advantages of fiber optic cable over copper cables include all of the following except _________ .

A type of time division multiplexing that improves channel efficiency is _________.

Serial- to- parallel and parallel- to- serial converters allow computers to communicate with external devices.

Baud rate is another term for bit rate.

The unwanted change in the shape of a waveform is referred to as modulation.

A constellation map graphically displays _________.

Parallel data transmission _________.

"Return to zero"and "return to one"are types of synchronous communications that use separate clock and data lines.

EMI stands for _________.

Time division multiplexing include all of the following except ___________.

Conversion of optical power to heat is one result of absorption in fiber optic cables.

Time division multiplexing switches multiple data sources onto and off of a single transmission line in a specific sequence.

Wireless communication in the infrared frequency band are limited to line- of- sight communications.

Statistical time division multiplexing functions by using variable time slot assignments.

Single- mode propagation has greater bandwidth than multimode propagation.

An intersective method of pulse width modulation _________.

Attenuation in a coaxial cable will increase if _________.

Statistical time division multiplexing improves channel efficiency by ensuring that every time slot contains data.

All of the following are methods for modulating analog signals with digital data except __________.

Synchronous time division multiplexing is inefficient because_________.

Introductory Concepts

Number Systems, Operations, and Codes

Logic Gates

Boolean Algebra and Logic Simplification

Combinational Logic Analysis

Functions of Combinational Logic

Latches, Flip-Flops, and Timers

Shift Registers

Counters

Programmable Logic

Data Storage

Signal Conversion and Processing

Data Processing and Control

Integrated Circuit Technologies

Filters