CS601 Solved Grand Quiz Spring 2021

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CS601 Solved Grand Quiz Spring 2021

CS601 SOLVED MCQs

Which one of following is a scrambling coding technique?

  • B8ZS
  • B8SZ
  • B08SZ
  • BZ8S

According to the Fourier analysis, frequencies obtained after decomposition of digital signals are____________.

  • Continuous
  • Discrete
  •  Bit length
  • Homogeneous

Low pass channel has_______ bandwidth between two stations.

  • Dedicated
  • Shared
  • Multiplexed
  • Infinite

_______ is the heart of blocking code.

  • Coding
  • Division
  • Substitution
  • Multiplication

Wireless transmission can be divided into_____ broad groups.

  • Two
  • Three
  • Four
  • Five

Wiring used for transmission modes depends upon________.

  • Latency
  • Data Stream
  • Data sniffing
  • Packet Tracing

If a digital transmission system is sending five bits in every half a second, the bit-rate of the system.

  • 5 bps
  • 10 Hz
  • 0.2 bps
  • 10 bps

If the message going to pass through a packet-switched network, it can be divided into packets of_________.

  • Fixed size
  • Variable size
  • Both fix and Variable size
  • None

In an analogue hierarchy to carry voice channels, a group can carry _________voice channels.

  • 60
  • 12
  • 20
  • 10
  • QUESTION: In optical fiber a glass or plastic core is surrounded by a ___________.
  • Cladding
  • Outer conductor shield
  • Inner Conductor shield
  • Insulator

In transmission impairments ______________ noise occurs from other sourcelike

  • Impulse
  • Induced
  • Cross talk
  • Thermal

___________ is a digital process that allows connections to share the high bandwidth of a link.

  • FDM
  • TDM
  • WDM
  • None of the choices is correct

Bandwidth in hertz in the range of_________ contained in a composite signal.

  • Signals
  • Phases
  • Amplitudes
  • Frequencies

LAN stands for ___________.

  • Logical area network
  • Long-distance Area Network
  • Local Area Network
  • Long Area Network

Demultiplexer is a_________ device.

  • One to many
  • Many to many
  • One to one
  • Many to many

Mr. Asif while sitting in Lahore is linking with his friend in Dubai through Skype is a_____________.

  • Local Area Network
  • Metropolitan Area Network
  • Wide Area Network
  • Home Based Network

In __________ modulation, frequency and amplitude remain constant.

  • Phase
  • Frequency
  • Amplitude
  • Quadrature

In TDM based digital hierarchy used by the Telephone companies, DS-0 is a single digital channel of_________.

  • 1.544 Mbps
  • 128 kbps
  • 64 kbps
  • 32 kbps

The bandwidth-delay product defines the number of bits that can fill the ____________.

  • Link
  • Network
  • Hub
  • Switch

If a digital-signals has four levels, then we need _____ bits to represent each level.

  • 2
  • 3
  • 4
  • 5

Routing is a function of____________ layer.

  • Network
  • Physical
  • Transport
  • Datalink

_________ relatively measures the strength of two signals.

  • Signal rate
  • Bit rate
  • Decibel
  • Pulse rate

Taking off the header from the message is called________.

  • Layering
  • Encryption
  • Decapsulation
  • Stuffing

Which of the following is not a characteristic of a sine wave?

  • Amplitude
  • Segmentation
  • Phase
  • Frequency

In frequency domain plot, which value is replaced with frequency?

  • Wavelength
  • Amplitude
  • Phase
  • Time

_________ is the process of converting binary data to a digital signal.

  • QAM
  • ASK
  • FSK
  • Line coding

Low pass channel with ___________ bandwidth is not real and is used for theoretical modeling.

  • Multiplex
  • Infinite
  • Ethernet
  • Narrow

HDB3 falls under which coding scheme?

  • Bipolar
  • Bi phase
  • Line
  • Block

Unit of phase is________.

  • Bits per second
  • Watts
  • Bauds
  • Degree

BFSK stands for_____________.

  • Baud Frequency Shift Key
  • Binary Frequency Sift Key
  • Barrier Frequency Shift Key
  • Bridge Frequency Shift Key

____________ is NOT an example of connecting device.

  • Bridge
  • Router
  • TCP
  • Switch

Coaxial cables are categorized by their____________ ratings.

  • Electronic Industries Association (EIA)
  •  Amplitude modulation (AM)
  • Frequency modulation (FM)
  • Radio Government (RG)

_________ is Shannon capacity formula to determine highest theoretically data rate for a noisy channel.

  • Capacity=Bandwidth*(1+SNR)
  • Capacity=Bandwidth*log2(2+SNR)
  • Capacity=Bandwidth*log2(SNR)
  • Capacity=Bandwidth*log2(1+SNR)

Which one of the following is not among the required phases for the actual communication in a circuit switched network?

  • Setup
  • Data transfer
  • Protocol
  • Connection teardown

A common bipolar encoding scheme is called ________.

  • AMI
  • NRZ
  • RZ
  • QAM

A telephone line analog signal has got the bandwidth of ___________.

  • 8 kHz
  • 2 kHz
  • 16 kHz
  • 4 kHz

In __________ systems, resources are allocated on demand.

  • Frequency switching
  • Line switching
  • Circuit switching
  • Packet switching

A fiber-optic cable transmit signals in the form of_________.

  • Light
  • Sound
  • Waves
  • None of the given

Composite wave can be used to send ____________.

  • Bandwidth
  • Telephone
  • Amplitude
  • Frequency

Routing is the function of _________ layer.

  • Network
  • Physical
  • Transport
  • Data link

A virtual-circuit network operates on ____________layer.

  • Datalink
  • Network
  • Physical
  • Application

In TCP\IP model, the Physical Layer exchanges data in the form of ___________.

  • Packets
  • Frames
  • Bits
  • Segments

_________ signal completes certain pattern in a specific amount of time.

  • Non-periodic
  • Periodic
  • A Periodic
  • Wavelength

Narrow bands of lights in wave division multiplexing are denoted by___________.

If a digital signal has four levels, the we need _________bits to represent.

  • 2
  • 3
  • 4
  • 5

We can have combination of___________ possible codes with a 5-bit code.

  • 4
  • 8
  • 18
  • 32

There are _________categories of multiplexing.

  • 2
  • 3
  • 7
  • 5

Top most organization that provides support for the Internet Standard process is called___________.

  • Internet Society (ISOC)
  • Internet Architecture Board (IAB)
  • IETF
  • IRTF

If the message is going to pass through a packet-switched network, it can be divided into packets of___________.

  • Fixed size
  • Variable size
  • Both-fix and variable size
  • None

________ data moves faster and timing errors are less frequent because the transmitter and receiver time is synced.

  • Synchronous
  • Asynchronous
  • Isochronous
  • Metachronous

In frequency modulation, the frequency of the oscillator changes according to the_____________.

  • Output Voltage
  • Output Frequency
  • Input Voltage
  • Output Phases

Binary Amplitude Shift Keying also called as:

  • Dual Keying
  • On-In Keying
  • On-Off Keying
  • In-Out Keying

__________ signals can take infinite levels of intensity over time.

  • Digital
  • Discrete
  • Analog
  • Logical

Bi-polar uses_________ voltage levels.

  • One
  • Two
  • Three
  • Four

In serial data transmission ________ data transmission mode can be cheap but slower.

  • Synchronous
  • Asynchronous
  • Isochronous
  • Metachronous

In star-based network comprising of four computers and one switch, total number of cable needed will be___________.

  • 4
  • 5
  • 6
  • 3

Parabolic antenna is used for_________ communication.

  • Infrared waves
  • Microwave
  • Light wave
  • Radio wave

In circuit switching total Delay is combination of Connection Time and____________.

  • Switching time
  • Acknowledgement time
  • Receiving time
  • Connection tear down time

Guard bands are used in _________ multiplexing technique, to avoid overlapping of frequency bands assigned to each user.

  • PDM
  • CSMA
  • TDM
  • FDM

Datagram switching is done on___________.

  • Application Layer
  • Datalink Layer
  • Physical Layer
  • Network Layer

Token Ring was devised by____________.

  • IBM
  • OSI
  • Dell
  • NASA

In TDM based digital hierarchy used by the Telephone companies, DS-0 is a digital channel of______________.

  • 1.544 Mbps
  • 128 kbps
  • 64 kbps
  • 32kbps               Repeated

____________can be published using Request for Comments (RFCs).

  • Proposed Standard
  • Draft Standard
  • Internet Draft
  • Internet Standard

In transmission impairments_______ noise occurs from the random motion of electrons in a wire.

  • Thermal noise
  • Impulse noise
  • Cross talk
  • Induced noise

In ASK correct formula for calculating the bandwidth is as_____________-.

  •  B=(1*d)S
  • B=(d-1)S
  • B=(d-5)S

Which one of the following is among the required phases for the actual communication in a circuit switched network?

  • Setup
  • Data transfer
  • Protocol
  • Connection tear down

According to the Fourier analysis, frequencies obtained after decomposition of non-periodic digital signals are___________.

  • Bit length
  • Automatic
  • Heterogenous
  • Continuous

The most common type of connector used by the coaxial cable is______________.

  • BNC
  • RJ-45
  • RJ-11
  • RJ-57

When data is sent or received using___________ the data bits are organized in a specific order, since they

  • Parallel data transmission
  • Serial data transmission
  • Hybrid data transmission
  • Both parallel and serial data transmission

__________have established standards for using these signals for communication between devices such as keyboards, mice, PCs, and printers.

  • Microwave
  • Infrared waves
  • Simple waves
  • Radio waves

In case of Frequency shift key, the difference between two frequency is represented as____________.

  • 2
  • 3
  • 6
  • 2 5

___________category of coaxial cable is used for thin Ethernet.

  • RG-58
  • RG-59
  • RG-1
  • RG-47

Cellular telephone uses___________ waves for communication.

  • Light waves
  • Infrared waves
  • Radio waves
  • Microwaves

___________mode of serial transmission guarantees fixed rate data.

  • Synchronous
  • Asynchronous
  • Isochronous
  • Metasochronous

Router is a network device which operates on the__________ layers of the TCP\IP protocol suit.

  • Application
  • Transport
  • Network
  • Presentation

_________ layer is responsible for the creating of the datagrams.

  • Physical
  • Data link
  • Session
  • Network

Narrow bands of light in waves division multiplexing are denoted by___________.

  •                                       Repeated

In virtual circuit approach when a frame enters a switch and when it leaves a switch its VCI always___________.

  • Always changes
  • Sometimes changes
  • Sometimes Remain Same
  • Remain the same

According to stats, fewer than_________ crossbar points can be used at once.

  • 14%
  • 100%
  • 30%
  • 25%

If data rate is to be 1 Mbps then what will be the minimum bandwidth required for NRZ-1 coding scheme?

  • 1Khz
  • 200Khz
  • 500Khz
  • 0.5khz

Data format used at Transport layer of TCP\IP protocol suit is called__________.

  • Packet
  • Frame
  • Bit
  • Segment

A virtual circuit network operates on ___________ layer.

  • Data link
  • Network
  • Physical
  • Application                                                 Repeated

If 32 bits are sent in two seconds then the bitrate for that signal is______________.

  • 32 bps
  • 64 bps
  • 8 Hz
  • 16 bps                                                    Repeated

Cable TV networks use____________ cables.

  • Coaxial
  • UTP
  • STP
  • Twisted pair                                         Repeated

____________ normally used for long-distance data transfer.

  • Parallel data transmission
  • Serial data transmission
  • Hybrid data transmission
  • Both parallel and Serial data transmission                    Repeated

__________ is a block coding method.

  • NRZ
  • NRZ-1
  • 8B\10B
  • 8B\12B

TCP\IP was chosen to be the official protocol of internet ________________.

  • 1973
  • 1980
  • 1983
  • 1988

To measure the data rate ___________ theoretically formula(s)Were developed.

  • One
  • Two
  • Three
  • Four                                                                             Repeated

In FSK, Baud rate is less than or equal to _____________ rate.

  • Signal
  • Decibel
  • Bit
  • None of these Given                Repeated

___________ signal is represented by the discrete values.

  • Analog
  • Digital
  • Both
  • Continuous

Electromagnetic waves ranging in frequencies between 3 kHz and 1 GHz are called_________.

  • Infrared waves
  • Radio waves
  • PCLight waves
  • Microwaves

Suppose a signal is amplitude then the value od decibel will be __________.

  • 0
  • 1
  • Negative
  • Positive                                                Repeated

_________ technique does not follows analog conversion.

  • QAM
  • AM
  • FM
  • PM
  • Repeated

In Pulse Code Modulation (PCM), the sampling is dependent on_________.

  • Time
  • Amplitude
  • Frequency
  • Signal Rate

________________ is the sub type of Time Division Multiplexing Technique.

  • Amplitude TDM
  • Light TDM
  • Statistical TDM
  • Barrier TDM

Modulation of analog signal is needed if the medium is ______________ in nature.

  • Bandpass
  • Low-pass
  • Bi-pass
  • High-pass

Quadrature Amplitude Modulation (QAM) is the combination of____________ and __________.

  • FSK-PSK
  • PSK-FSK
  • ASK-PSK
  • ASK-FSK

There _____________ components of data communication system.

  • 4
  • 5
  • 6
  • 7

QPSK stands for_____________.

  • Quality phase shift key
  • Queuing phase shift key
  • Quadrature phase shift key
  • Quality physical shift key

To calculate the data rate for noisy channel___________ formula is used.

  • Shannon
  • Nyquist
  • Propagation
  • Greedy

Most commonly used connector for twisted pair cable is ______________.

  • RJ-11
  • RJ-45
  • RJ-44
  • RJ-52

Binary Amplitude Shift Keying is also called as:

  • Dual Keying
  • On-In Keying
  • On-Off Keying
  • In-Out Keying

Some manufacturers provide a special port called the__________.

  • IrDA
  • Consol
  • Parallel
  • USB

To calculate the data rate for noiseless channel ____________ formula is used.

  • Ready
  • Shannon
  • Nyquist
  • Propagation

Two PCs and one printer are connected in a network within a room, it is an example of _________.

  • LAN
  • WAN
  • MAN
  • SONET

Analog the following cables given, __________ cable provides highest bandwidth and less attenuation.

  • UTP
  • Coaxial cable
  • Coaxial cable
  • Fiber optical

To calculate the data for noisy channel_________ formula is used.

  • Shannon
  • Nyquist
  • Propagation
  • Greedy

In circuit switched networks we have low efficiency but minimal _____________.

  • Delay
  • Speed
  • Throughput
  • Errors

Signals travel through fiber optic cable are in the form of___________.

  • Light
  • Bits
  • Electromagnetic
  • Bytes

Polar encoding scheme uses__________ voltage level.

  • 0
  • 1
  • 2
  • 3

TCP\IP protocol suit consists of __________ layers.

  • 3
  • 5
  • 6
  • 7

Bandwidth in hertz is the range of__________ contained in a composite signal.

  • Signals
  • Phases
  • Amplitudes
  • Frequencies

___________ is an example of a host in a network.

  • Router
  • Computer
  • Bridge
  • Hub

Set of rules to be followed for effective communication is called____________.

  • Topology
  • Protocol
  • Switching
  • Encryption

_________ is NOT an example of a connecting device.

  • Bridge
  • Router
  • TCP
  • Switch

When an antenna transmits radio waves, they are propagated in ________________.

  • All directions
  • Left directions
  • Right directions
  • Only up and down direction

Which one of the following is not a bipolar encoding level?

  • Negative
  • One
  • Zero
  • Positive

___________and________ are the two types of addressing in virtual circuit approach.

  • Local, Global
  • Private, Public
  • Variable, Dynamic
  •  Dependent, Independent

In transmission implements____________ noise occurs from other sources like motors and appliances etc.

  • Impulse
  • Inductive
  • Cross talk
  • Thermal

In computer network the stations are connected to each other in such a way that each station is connected to every other station through dedicated links. This makes___________.

  • Bus
  • Ring
  • Star
  • Mesh

In scrambling coding scheme, the number of pulses replacing the bits will be______________?

  • Equal to pulses
  • Double the pulses
  • Half of the pulses
  • Triple the pulses

In the context of analog to analog signal conversation technique. “PM” Stands for__________.

  • Pulse Modulation
  • Phase modulation
  • Parse modulation
  • Popular modulation

______________ relatively measurement the strength of two signals.

  • Signals
  • Bit rate
  • Decibel
  • Pulse rate

Datagram approach and circuit approach are two popular approaches which lead us to__________.

  • Line switching
  • Circuit switching
  • Dynamic switching
  • Packet switching

If data is to be 1 Mbps then what will be the minimum bandwidth required for NRZ-I coding scheme?

  • 1Khz
  • 200Khz
  • 500khz
  • 0.5khz

In virtual circuit approach when frame enters a switch and when it leaves a switch its VCi always___________.

  • Always Changes
  • Sometimes Changes
  • Sometimes Remain Same
  • Remain the Same

A common bipolar coding scheme is called__________.

  • AMI
  • NRZ
  • RZ
  • QAM

________ means loss of energy in signal.

  • Noise
  • Delay
  • Attenuation
  • Distortion

The conversion of analog simple of the signal into digital form is called _____________ process.

  • Quantizing
  • Sampling
  • Modulation
  • Quantizing and Sampling

A local telephone network use ____________network.

  • Line switched
  • Packet switched
  • Circuit switched
  • Bit switched

In Amplitude Shift Keying. _______of the signal is/are changed.

  • Amplitude and Frequency
  • Amplitude
  • Frequency and Amplitude
  • Phase

In frequency domain plot, which value is plot on Y-axis?

  • Time
  • Frequency
  • Amplitude
  • Wavelength

In pulse code modulation the term sampling can also be referred as____________.

  • Pulse Amplitude Modulation
  • Pulse sample Modulation
  • Pulse line modulation
  • Pulse Frequency Modulation

Switch is a network device which operates on the _______________layer of TCP/IP protocol suit.

  • Application
  • Transport
  • Presentation
  • Data link

In analog transmission of digital data, the required bandwidth is always proportional to the signal rate expect in ________ a digital to analog conversion technique.

  • ASK
  • FSK
  • PSK
  • NSK

WDM stands for____________.

  • Wideband De-Modulation
  • Worst Data Manipulation
  • Wavelength Division Multiplexing
  • None of the Choices is correct

____________ does not follows analog to analog conversion.

  • QAM
  • AM
  • FM
  • PM

On a communication link, different channels are separates by unused strips of bandwidth called as___________.

  • Base band
  • Broad band
  • Null band
  • Guard band
  •  

_______________ layer converts frames coming from Data Link Layer into bits and sends

Them on the transmission medium.

  • Application
  • Physical
  • Network
  • Transport

Wavelength binds the___________ of a simple sine wave to the propagation speed of the medium.

  • Phase
  • Period of the frequency                          book page 61
  • Amplitude
  • Bandwidth

The bandwidth delay product define the number of bits that can fill the_____________.

  • Link
  • Network
  • Hub
  • Switch

The size of the packet determined by the network and _______________.

  • Delays
  • Switching
  • Instructions
  • Governing protocol
  •  

To improve the performance of line coding __________coding was……?

  • Block coding
  • MLT-3
  • 2BIQ
  • Double coding

Which one of the following is not a sampling technique?

  • Flat Top Sampling
  • Neutral sampling
  • Natural sampling
  • Ideal sampling

___________is normally used where speed is priority in data transfer.

  • Serial data transmission
  • Hybrid transmission
  • Parallel transmission
  • Both parallel and serial transmission

In a computer network, five stations are connected to each other in such a way that each station is connected to every other station through dedicated links. This makes____________ topology.

  • Bus
  • Ring
  • Star
  • Mesh

Some manufacturer provide a special port called the_________port that allows a wireless keyboard to communicate with a PC.

  • IrDA
  • Consol
  • Parallel
  • USB

Current technology supports______________ modes for propagation of light.

  • Two
  • Three
  • Four
  • Five

We quantize the sampling output into certain levels based on range of___________ and required accuracy.

  • Frequency
  • Amplitude
  • Time period
  • None

_____________is the Nyquist bit rate formula for noiseless channel.

  • BitRate=2*Bandwidth*log2 L
  • BitRate=2*Bandwidth*logL
  • BitRate=2*Bandwidth*log2L
  • BitRate=2*Bandwidth*L

A frequency is called ___________, if the rate of change in sine wave Is Instantaneous.

  • Infinite frequency                         book page 59
  • Zero frequency
  • Bandwidth
  • Frequency hertz

Which multiplexing technique involves signals composed of light beams?

  • FDM
  • TDM
  • WDM
  • PDM

__________ is a multiplexing technique which shifts each signal to a different carrier frequency.

  • FDM
  • TDM
  • WDM
  • PDM

Entire band in United States is regulated by_________ authorities.

  • FCC
  • ITU
  • NASA
  • ANSI

Two stations are connected via a secure link in which messages are encrypted from source to the destination message is called——————

  • Plain text
  • Cipher test
  • Message
  • Protocol  (not confirm)

Simultaneous transmission of multiple signal across a single data link is called——-

  • Demultiplexing
  • Multiplexing
  • Modulation
  • demodulation

in NRZ-1 the signal is inverted if ————- is encountered.

  • 0
  • 1
  • 00
  • 11

—————- Protocol suite is being used by the modern internet communication.

  • OSI
  • TCP/IP
  • ARPANET
  • Telnet

In the frequency shift keying, ————- remain(s) constant.

  • Frequency
  • Amplitude
  • Both amplitude and phase
  • Both phase and frequency 

In ———– signal changes its shape or form.

  • Thermal noise
  • Distortion
  • Impulse noise
  • Attenuation

————– coding scheme are useful for LAN but not for long ranges.

  • Biphase                                 book page 113
  • Line
  • Vector
  • Serial

In ————— TDM, each input connection has an allotment in the output even if is not sending data.

  • Asynchronous
  • Statistical
  • Synchronous  (Book page 164)
  • Isochronous

——————- is a type of serial transmission in which data bits are transmitted as a continues stream in time with a master clock. Start bits, stop bits, and gaps are not used. Transmitter and receiver time is sync.

  • Synchronous
  • Asynchronous
  • Isochronous
  • Metasochronous 

————- Relative measures the strength of two signals.

  • Signal rate
  • Bit rate
  • Decibel
  • Pulse rate

When the bandwidth of a link is greater than the combined bandwidths of the signals, we use —————- multiplexing.

  • Wavelength division
  • Frequency division
  • Time division
  • Hybrid division

———— is an example of host in a network.

  • Router
  • Computer
  • Bridge
  • Hub 

On a communication link, different channels are separated by unused strips of bandwidth called as ————-.

  • Base band
  • Broad band
  • Null
  • Guard band

The conversion of analog sample of the signal into digital form is called ———— process.

  • Quantizing
  • Sampling
  • Modulation
  • Quantizing and sampling   (Book pages 115 to 116 )

In star based network comprising of four computers and on switch, total number of cables needed will be ———-

  • 4
  • 5
  • 6
  • 3

The logical connection between the peer layers is ———- connection.

  • Physical
  • Direct    (no strong reference but as per book explanation layer to layer is direct )
  • Indirect
  • Tangible

In ———– TDM, slots are dynamically allocated to the connected stations to improve bandwidth efficiency.

  • Synchronous
  • Statistical
  • Isochronous
  • None of the choice is correct

According to stats, lower than —————- crossbar point can be used at once .

  • 14%
  • 100%
  • 30%
  • 25%

————– Category of coaxial cable is used for cable TV.

  • RG-58
  • RG-59
  • RG-11
  • RG-47

————– is sometimes called the bit rate.

  • Signal rate
  • Modulation rate
  • Data rate
  • Pulse rate

Uni polar, polar and bipolar are the types of —————

  • Line
  • Differential Manchester
  • NRZ-I
  • Block

Router is a network device which operates on the ———— layer of the TCP/IP protocol.

  • Application
  • Transport
  • Network
  • Presentation

According to the Fourier analysis, frequencies obtained after decomposition of no period.

  • Bit length
  • Automatic
  • Heterogeneous
  • Continuous     (Fourier analysis can be used to decompose a digital signal. If the digital signal is

periodic, which is rare in data communications, the decomposed signal has a frequencydomain

representation with an infinite bandwidth and discrete frequencies. If the digital

signal is nonperiodic, the decomposed signal still has an infinite bandwidth, but the frequencies

are continuous page 70 Data communication Book 5th generation )

When the bandwidth of a link is greater than combined bandwidths of the

  • Wavelength division
  • Frequency division
  • Time division
  • Hybrid division

The ————— technique expands the bandwidth of a signal by replacing each data bit with n bits using a spreading code.

  • FDM
  • FHSS
  • TDM
  • DSSS

———– Cable is used in wavelength division multiplexing.

  • Twisted pair
  • Coaxial
  • Fiber optic
  • Ethernet

VCI address is ———— address in virtual circuit approach.

  • Private
  • Variable
  • Local
  • Global

In baseband transmission, a digital signal is transmitted as ————.

  • Analog signal
  • Digital signal
  • Modulation signal
  •  Multiplexed signal

telephone network use —————- network.

  • Line switched
  • Packet switched
  • Circuit switched
  • Bit switched

Entire band in United states is regulated by ————— authorities.

  • FCC
  • ITU
  • NASA
  • ANSI

————– are used for multicast communication, such as radio and television.

  • Microwaves
  • Radio waves
  • Light waves
  • Infrared waves

To calculate the data rate foe noiseless channel ———— formula is used-

  • Reedy
  • Shannon
  • Nyquist
  • propagation

In an analogue hierarchy to carry voice channels, a super group _____________ bandwidth.

  • 240 kHz
  • 240 Hz
  • 120 kHz
  • 60kHz

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