Question 1

Another term for the weakening of a signal over distance is:

Accepted Answer

A) turnaround time 
B) propagation delay 
C) dispersion 
D) insulation 
E) attenuation 
A) turnaround time 
B) propagation delay 
C) dispersion 
D) insulation 
E) attenuation

Question 2

Define analog, and then describe the conversion from analog to digital using a four step method sampling, measuring, quantizing and coding), and present a detailed diagram like the one which in the slides.What is quantizing error and how can it be lessened in some situations? Draw a sketch of quantizing error in your model.

Accepted Answer

Analog refers to a continuous signal tha

Question 3

When all bits of a character are transferred one after another, the bits are transferred in ___________ mode.

Accepted Answer

A) serial 
B) frequency division 
C) multiplexing 
D) parallel 
E) full complex 
A) serial 
B) frequency division 
C) multiplexing 
D) parallel 
E) full complex

Question 4

A physical circuit refers to the transmission characteristics of the connection, such as the speed at which data is being sent through the connection.

Accepted Answer

A) True 
 B)False

Question 5

Radio, microwave and satellite are all examples of guided media.

Accepted Answer

A) True 
 B)False

Question 6

The room that contains the cable termination points and the distribution frames is referred to as

Accepted Answer

A) telecommunications closet 
B) equipment room 
C) building entrance 
D) backbone room 
E) work area 
A) telecommunications closet 
B) equipment room 
C) building entrance 
D) backbone room 
E) work area

Question 7

The two basic types of media are:

Accepted Answer

A) statistical and frequency 
B) guided and wireless radiated) 
C) local and wide area 
D) attenuator and Gaussian 
E) duplexed and non-duplexed 
A) statistical and frequency 
B) guided and wireless radiated) 
C) local and wide area 
D) attenuator and Gaussian 
E) duplexed and non-duplexed

Question 8

A _________ is an FDM device that splits the physical circuit into three logical circuits phone, upstream data, downstream data).

Accepted Answer

A) DSL modem 
B) cable modem 
C) wireless router 
D) V.44 modem 
E) Serial modem 
A) DSL modem 
B) cable modem 
C) wireless router 
D) V.44 modem 
E) Serial modem

Question 9

Microwave transmission:

Accepted Answer

A) is a type of high frequency radio communication 
B) requires a clear line-of-sight path 
C) is typically used for long distance data transmission 
D) does not require the laying of any cable 
E) all of the above 
A) is a type of high frequency radio communication 
B) requires a clear line-of-sight path 
C) is typically used for long distance data transmission 
D) does not require the laying of any cable 
E) all of the above

Question 10

One form of interference with satellite transmission is called raindrop attenuation in which the transmissions are absorbed by heavy rain.

Accepted Answer

A) True 
 B)False

Question 11

WDM is a version of FDM used in fiber-optic cables.

Accepted Answer

A) True 
 B)False

Question 12

_____________ 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.

Accepted Answer

A) quantizing error 
B) handshaking phase 
C) modulating frequency 
D) POTS anomaly 
E) amplitude Trellis effect 
A) quantizing error 
B) handshaking phase 
C) modulating frequency 
D) POTS anomaly 
E) amplitude Trellis effect

Question 13

____________ refers to the transmission characteristics of the circuit.

Accepted Answer

A) handshaking 
B) virtual circuit 
C) bonding 
D) logical circuit 
E) physical circuit 
A) handshaking 
B) virtual circuit 
C) bonding 
D) logical circuit 
E) physical circuit

Question 14

______________ refers to the time it takes for a signal to travel from sender to recipient highly exaggerated with satellite transmission).

Accepted Answer

A) Line-of-sight effect 
B) Multimode index 
C) Saturation effect 
D) Raindrop attenuation 
E) Propagation delay 
A) Line-of-sight effect 
B) Multimode index 
C) Saturation effect 
D) Raindrop attenuation 
E) Propagation delay

Question 15

In general, networks designed to transmit primarily computer data are likely to be ________.

Accepted Answer

A) international 
B) level 1 
C) numeric 
D) analog 
E) digital 
A) international 
B) level 1 
C) numeric 
D) analog 
E) digital

Question 16

Which of the following statements is correct?

Accepted Answer

A) Parallel transmission is most often used for sending data on a circuit that is made up of one wire. 
B) Parallel transmission is distinguished from serial transmission by the fact that the transmitting device sends a single bit, then a second bit, and so on, until all the bits are transmitted. 
C) Parallel transmission is only used for analog data. 
D) Serial transmission is slower than parallel transmission. 
E) Parallel transmission is the same as serial transmission. 
A) Parallel transmission is most often used for sending data on a circuit that is made up of one wire. 
B) Parallel transmission is distinguished from serial transmission by the fact that the transmitting device sends a single bit, then a second bit, and so on, until all the bits are transmitted. 
C) Parallel transmission is only used for analog data. 
D) Serial transmission is slower than parallel transmission. 
E) Parallel transmission is the same as serial transmission.

Question 17

In general, older networks and local loops designed to transmit voice data are likely to be ________.

Accepted Answer

A) international 
B) level 2 
C) numeric 
D) digital 
E) analog 
A) international 
B) level 2 
C) numeric 
D) digital 
E) analog

Question 18

To get more "bandwidth" in a digital transmission, you must:

Accepted Answer

A) increase the range of frequencies available for a transmission 
B) increase the loudness per transmission 
C) decrease the bits per second transmission speed 
D) increase the phase shifts per transmission 
E) decrease the baud rate per transmission 
A) increase the range of frequencies available for a transmission 
B) increase the loudness per transmission 
C) decrease the bits per second transmission speed 
D) increase the phase shifts per transmission 
E) decrease the baud rate per transmission

Question 19

Baud rate is the number of bits transmitted per second.

Accepted Answer

A) True 
 B)False

Question 20

In which type of modulation is a 1 distinguished from a 0 by shifting the direction in which the wave begins?

Accepted Answer

A) bandwidth modulation 
B) amplitude modulation 
C) frequency modulation 
D) phase modulation 
E) codec modulation 
A) bandwidth modulation 
B) amplitude modulation 
C) frequency modulation 
D) phase modulation 
E) codec modulation

Another term for the weakening of a signal over distance is:

When all bits of a character are transferred one after another, the bits are transferred in ___________ mode.

A physical circuit refers to the transmission characteristics of the connection, such as the speed at which data is being sent through the connection.

Radio, microwave and satellite are all examples of guided media.

The room that contains the cable termination points and the distribution frames is referred to as

The two basic types of media are:

A _________ is an FDM device that splits the physical circuit into three logical circuits phone, upstream data, downstream data).

Microwave transmission:

One form of interference with satellite transmission is called raindrop attenuation in which the transmissions are absorbed by heavy rain.

WDM is a version of FDM used in fiber-optic cables.

_____________ 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.

____________ refers to the transmission characteristics of the circuit.

______________ refers to the time it takes for a signal to travel from sender to recipient highly exaggerated with satellite transmission).

In general, networks designed to transmit primarily computer data are likely to be ________.

Which of the following statements is correct?

In general, older networks and local loops designed to transmit voice data are likely to be ________.

To get more "bandwidth" in a digital transmission, you must:

Baud rate is the number of bits transmitted per second.

In which type of modulation is a 1 distinguished from a 0 by shifting the direction in which the wave begins?

Introduction to Data Communications

Application Layer

Data Link Layer

Network and Transport Layers

Network Design

Wired and Wireless Local Area Networks

Backbone Networks

Wide Area Networks

The Internet

Network Security

Network Management

Filters

Exam 3: Physical Layer

Another term for the weakening of a signal over distance is:

When all bits of a character are transferred one after another, the bits are transferred in ___________ mode.

A physical circuit refers to the transmission characteristics of the connection, such as the speed at which data is being sent through the connection.

Radio, microwave and satellite are all examples of guided media.

The room that contains the cable termination points and the distribution frames is referred to as

The two basic types of media are:

A _________ is an FDM device that splits the physical circuit into three logical circuits phone, upstream data, downstream data).

Microwave transmission:

One form of interference with satellite transmission is called raindrop attenuation in which the transmissions are absorbed by heavy rain.

WDM is a version of FDM used in fiber-optic cables.

_____________ 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.

____________ refers to the transmission characteristics of the circuit.

______________ refers to the time it takes for a signal to travel from sender to recipient highly exaggerated with satellite transmission).

In general, networks designed to transmit primarily computer data are likely to be ________.

Which of the following statements is correct?

In general, older networks and local loops designed to transmit voice data are likely to be ________.

To get more "bandwidth" in a digital transmission, you must:

Baud rate is the number of bits transmitted per second.

In which type of modulation is a 1 distinguished from a 0 by shifting the direction in which the wave begins?

Introduction to Data Communications

Application Layer

Data Link Layer

Network and Transport Layers

Network Design

Wired and Wireless Local Area Networks

Backbone Networks

Wide Area Networks

The Internet

Network Security

Network Management

Filters