___ is a procedure or rule that defines how data is to be transmitted ______ substitutes four consecutive zeros with 000V or B00V What is the other name for parity? A seven-bit character can represent one of ___ possibilities. What is the number of bits that are zeros when tramissing odd-parity code symbols? With ____, each character is framed between a start and a stop bit. In a _________ protocol, the data section of a frame is a sequence of bits. A simple parity-check code can detect __________ errors. In cyclic redundancy checking, what is the CRC? An 8-bit character code. The line control unit (LCU) operates on the data in digital form. SYN character of EBCDIC code. For a ______ channel, we need to use the Shannon capacity to find the maximum bit rat ______ refers to the physical or logical arrangement of a network. Which of the following encoding methods does not provide for synchronization? A system that perform parallel-to-serial and serial-to-parallel conversion of a data All bits in a character are sent and received in ____ in serial port. The computer that initiates information transfer A logic __ is used for the start bit. _______ encoding has a transition at the beginning of each 0 bit. ________ is normally referred to as mB/nB coding; it replaces each m-bit group with a bit group.
Transcript
___ is a procedure or rule that defines how data is to be transmitted
______ substitutes four consecutive zeros with 000V or B00VWhat is the other name for parity?A seven-bit character can represent one of ___ possibilities.What is the number of bits that are zeros when tramissing odd-parity code symbols?
With ____, each character is framed between a start and a stop bit.
In a _________ protocol, the data section of a frame is a sequence of bits.
A simple parity-check code can detect __________ errors.
________ is normally referred to as mB/nB coding; it replaces each m-bit group with an n-bit group.
In cyclic redundancy checking, what is the CRC?
An 8-bit character code.
The line control unit (LCU) operates on the data in digital form.SYN character of EBCDIC code.For a ______ channel, we need to use the Shannon capacity to find the maximum bit rate.
______ refers to the physical or logical arrangement of a network.
Which of the following encoding methods does not provide for synchronization?A system that perform parallel-to-serial and serial-to-parallel conversion of a data link.
All bits in a character are sent and received in ____ in serial port.The computer that initiates information transferA logic __ is used for the start bit.
_______ encoding has a transition at the beginning of each 0 bit.
Unipolar, bipolar, and polar encoding are types of _______ encoding.
In _______encoding, we use three levels: positive, zero, and negative.What is the Nyquist sample rate for a voice input of 10 kHz?How many channels does a T2 line carry?
Binary codes are sometimes transformed in modem intoThe baudot code uses how many bits per symbol?An equipment that interfaces the data terminal equipment to the analog transmission line
What is produced by a longitudinal redundancy check (LRC)?
Data link control deals with the design and procedures for ______ communication.
________ is a type of transmission impairment in which an outside source such as crosstalk corrupts a signal.
________ provides synchronization without increasing the number of bits.
___________ conversion involves three techniques: line coding, block coding, and scrambling.
Data means
In _______encoding, we use three levels: positive, zero, and negative.Which of the following is not an analog-to-analog conversion?
In what year did computer and terminals start comunicating with each other over long distance?
How many number of equiprobable events are there for 8-bits of information?
________ is the process of converting digital data to a digital signal.
The cause of bit errors in data transmission
________ is a type of transmission impairment in which the signal loses strength due to the resistance of the transmission medium.
________ is a type of transmission impairment in which the signal loses strength due to the different propagation speeds of each frequency that makes up the signal.
In _________, the frequency of the carrier signal is varied to represent data. Both peak amplitude and phase remain constant.
In ________, the phase of the carrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant.
________ can be achieved by using multiplexing; ______ can be achieved by using spreading.
Before data can be transmitted, they must be transformed to ________.
Given two sine waves A and B, if the frequency of A is twice that of B, then the period of B is ________ that of A.
The signal rate is sometimes called the ____ rate.
The _______ model shows how the network functions of a computer ought to be organized.
In a frequency-domain plot, the horizontal axis measures the ________.
_________ conversion is the representation of analog information by an analog signal.
Quadrature amplitude modulation (QAM) is a combination of ___________.
The lowest layer in the ISO protocol hierarchy.The OSI model consists of _______ layers.The Internet model consists of _______ layers.
The capacity of the standard 4-kHz telephone channel with 30 dB S/N is
The ______ layer establishes, maintains, and synchronizes the interactions between communicating devices.The _________ layer enables the users to access the network.The ________ layer is responsible for the process-to-process delivery of the entire message.
The ______ layer is responsible for the source-to-destination delivery of a packet across multiple network links.
Which OSI reference model layer does Telnet function at?
The _______ layer coordinates the functions required to transmit a bit stream over a physical medium.The _______ layer links the network support layers and the user support layers.
In Manchester and differential Manchester encoding, the transition at the middle of the bit is used for __________.
_______ conversion is the process of changing one of the characteristics of an analog signal based on the information in the digital data.
The _______ layer ensures interoperability between communicating devices through transformation of data into a mutually agreed upon format.
The _______ layer is responsible for delivering data units from one station to the next without errors.
Data communications refers to the tranmission of
In QAM, both ________ of a carrier frequency are varied.Baudot code uses how many bits per symbol?
_________ utilization is the use of available bandwidth to achieve specific goals.
Frequency and period are ______.________is the rate of change with respect to time.
If the bandwidth of a signal is 5 KHz and the lowest frequency is 52 KHz, what is the highest frequency?
A sine wave in the ______ domain can be represented by one single spike in the _____ domain.What is the smallest unit of information in binary transmission system?
Binary codes are transformed in modems into
ASK, PSK, FSK, and QAM are examples of ________ conversion.
Radio communications between points using a single share frequency
In _______ transmission, the channel capacity is shared by both communicating devices at all times.
Communication between a computer and a keyboard involves ______________ transmission.
A television broadcast is an example of _______ transmission.
Data flow between two devices can occur in a _______ way.If the bit rate for an ASK signal is 1200 bps, the baud rate is ________.If the baud rate for a 64-QAM signal is 2000, what is the bit rate?
MEO satellites are located at altitudes between km.If the bit rate for a 16-QAM signal is 4000 bps, what is the baud rate?
The sharing of a medium and its link by two or more devices is called _______.
100Base-T4 uses ________ line coding.
100Base-TX uses _________ block coding and ________ line coding.
A format set of conventions governing the formatting and relative timing of message exchange between two communications system.
1000Base-SX, 1000Base-LX, and 1000Base-CX use _________ block coding and ________ line coding.
Standard Ethernet (10-Mbps) uses _______ encoding
Which of the following encoding methods does not provide for synchronization?
_______ encoding has a transition at the beginning of each 0 bit.
In ______, the change or lack of change in the level of the voltage determines the value of the bit.
A type of digital encoding technique used to detect collision in CSMA/CD.
In _____, the level of the voltage determines the value of the bit.
100Base-FX uses _________ block coding and ________ line coding.Which encoding method uses alternating positive and negative values for 1s?
Two common scrambling techniques are ________.
_______ encoding has a transition at the middle of each bit.
Which of the following is not an advantage of digital transmission?
____ is defined to be the maximum rate at which information can be transmitted through a channel.
____ is the difference between the original and reconstructed signal
Analog-to-analog conversion is needed if the available bandwidth is _______.Baseband transmission of a digital signal is possible only if we have a ____ channel.If the available channel is a ____ channel, we cannot send a digital signal directly to the channel.
OSI consists of how many layers of interconnection
In _____ transmission, the carrier signal is modulated so that its amplitude varies with the changing amplitudes of the modulating signal.
In TDM, the transmission rate of the multiplexed path is usually _______ the sum of the transmission rates of the signal sources.
___ is a data communications hardware that assist the host computer in handling input and output tasks.________ uses two carriers, one in-phase and the other quadrature.
Digital modulation technique used in modems.
Which of the following is not a digital-to-analog conversion?
Which mode of transmission achieves less than full-duplex but more than half-duplex.____ is a device used to convert a time varying electrical quantity to an appropriate from
Signals with a frequency between 2 MHz and 30 MHz use ______ propagation.
Signals with a frequency below 2 MHz use _______ propagation.
Signals with a frequency above 30 MHz use _______propagation.
Set of rules governing the orderly exchange of data information.
The use of coaxial cables in interconnecting networks is limited to an overall length of approximately.Use of coaxial cables in interconnecting networks is limited to an overall length of
100Base-T4 uses ________ line coding.
100Base-TX uses _________ block coding and ________ line coding.
1000Base-SX, 1000Base-LX, and 1000Base-CX use _________ block coding and ________ line coding.
Standard Ethernet (10-Mbps) uses _______ encoding
Which of the following encoding methods does not provide for synchronization?
_______ encoding has a transition at the beginning of each 0 bit.
In ______, the change or lack of change in the level of the voltage determines the value of the bit.
A type of digital encoding technique used to detect collision in CSMA/CD.
In _________, the frequency of the carrier signal is varied to represent data. Both peak amplitude and phase remain constant.
In ________, the phase of the carrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant.
In ________, the amplitude of the carrier signal is varied to create signal elements. Both frequency and phase remain constant.
In _____, the level of the voltage determines the value of the bit.
100Base-FX uses _________ block coding and ________ line coding.Which encoding method uses alternating positive and negative values for 1s?
Two common scrambling techniques are ________.
_______ encoding has a transition at the middle of each bit.Error control used in high frequency radio data transmission.
________ is the set of techniques that allows the simultaneous transmission of multiple signals across a single data link.
Standard Protocol Code B
B4B8 HDB3 B8ZSf BBCC LRC VRC CRC C7 14 64 128 DOdd Even Unknown Four C
