Description : An integrated circuit that performs the PCM encoding and decoding functions
Last Answer : Codec
Description : In the communication process, the decoding, encoding, feedback and response are together classified as A. communication tools B. communication channels C. communication functions D. communication parties
Last Answer : C. communication functions
Description : A theory that establishes the minimum sampling rate that can be used for a given PCM systems.
Last Answer : Nyquist sampling theorem
Description : Involves compression in the transmitter after the input sample has been converted to a linear PCM code and then expansion in the receiver prior to PCM coding:
Last Answer : Digital companding
Description : A theory that establishes the minimum sampling rate that can be used for a given PCM systems
Description : The PCM code for each channel occupies a fixed time slot called:
Last Answer : Epoch
Description : The main advantage of DM over PCM is:
Last Answer : simple circuit
Description : Data rate at which serial PCM bits are clocked out of the PCM encoder onto the transmission line.
Last Answer : line speed
Description : In PCM, it converts the PAM sampled to parallel PCM codes
Last Answer : Analog-to-Digital converter
Description : The most common method used for sampling voice signals in PCM systems.
Last Answer : flat top sampling
Description : Type of PCM which is designed to take advantage of the sample-to-sample redundancies in the typical speech waveform
Last Answer : Differential PCM
Description : Numerical indication of how efficiently a PCM code is utilized
Last Answer : Coding efficiency
Description : Used for transmission of PCM encoded time – division multiplexed digital signal.
Last Answer : T carriers
Description : It is the most prevalent encoding technique used for TDM signals:
Last Answer : PCM
Description : Variation of biphase that is used for encoding SMPTE time code data and for recording on video tapes
Last Answer : Biphase – M
Description : Rate of change of a signal on a transmission medium after encoding and modulation have occurred
Last Answer : baud rate
Description : The way in which the message travels to the receiver is called: A. Encoding B. Decoding C. Channel D. Source
Last Answer : C. Channel
Description : The process of translating thought into a symbolic form is known as _____________ 1. Encoding 2. Feedback 3. Noise 4. Decoding 5. The message channel
Last Answer : Encoding
Description : __________classified by decoding, feedback, encoding and response are together in communication process. A.communication tools B.communication channels C.communication parties D.communication function Answer: D
Last Answer : D.communication function
Description : Effective communication is measured through (a) Feed Back (b) Encoding (c) Decoding (d) None of the above
Last Answer : (a) Feed Back
Description : Fax is: A. Facsimile Decoding B. Facsimile Encoding C. Factual Encoding. D. Factual Decoding
Last Answer : B. Facsimile Encoding
Description : In one corner of its magazine advertisement for office copiers, Pitney Bowes places a small box asking for the names and addresses of individuals or companies seeking more information. Pitney has ... facilitate ______ for this communication. A)decoding. B)feedback. C)encoding. D)noise reduction.
Last Answer : D)noise reduction.
Description : The process of putting one's thoughts (meaning) into signs (symbols) is called A)decoding. B)noise. C)interference. D)transmission. E)encoding.
Last Answer : E)encoding.
Description : The process by which a sender transmits content is known as (a) Encoding ; (b) Decoding ; (c) Feedback ; (d) Receiver
Last Answer : (a) Encoding ;
Description : Transforming thoughts, ideas and messages into verbal and non-verbal signs is referred to as (A) channelization (B) mediation (C) encoding (D) decoding
Last Answer : (C) encoding
Description : The work of EU is ________ A. encoding B. decoding C. processing D. calculations
Last Answer : The work of EU is decoding
Description : ________ is the method of encoding audio signals used in US standard 1544 kbit/s 24 channel PCM systems. A. Shannon’s law B. A-law C. Newton’s law D. Mu-law
Last Answer : D. Mu-law
Description : In PCM encoding, quantization level varies as a function of ________ a) Frequency b) Amplitude c) Square of frequency d) Square of amplitude
Last Answer : b) Amplitude
Description : The signals which are obtained by encoding each quantized signal into a digital word is called as a) PAM signal b) PCM signal c) FM signal d) Sampling and quantization
Last Answer : b) PCM signal
Description : The OSI layer that provides the control functions necessary to establish, manage and terminated the connections as required to satisfy the user reques
Last Answer : Session layer
Description : What is a device that provides a method of sampling energy from within a waveguide for measurement or use in another circuit?
Last Answer : Directional Coupler
Description : What circuit in the TV receiver is used to develop the high voltage needed to operate the picture tube?
Last Answer : Horizontal output
Description : Which circuit is most common to both frequency-hopping and direct-sequence spread spectrum transmitters?
Last Answer : PSN code generator
Description : A virtual circuit which is logically equivalent to a two-point dedicated private-line circuit except slower
Last Answer : Permanent Virtual Circuit
Description : The main circuit in a PSN generator is ____.
Last Answer : Shift register
Description : ____ is a virtual-circuit wide-area network that was designed in response to demands for a new type of WAN in the late 1980s and early 1990s.
Last Answer : . Frame Relay
Description : The magnetic field of an antenna is perpendicular to the earth. The antenna’s polarization ___
Last Answer : is horizontal
Description : It is the ratio of the power density radiated in a particular direction to the power density radiated to the same point by a reference antenna, assuming both antennas are radiating the same amount of power
Last Answer : directive gain
Description : The property of interchangeability for the transmitting and receiving operations is known as ____
Last Answer : reciprocity
Description : The fields surrounding the antenna do not collapse their energy back into the antenna but rather radiate it out in space
Last Answer : radiation field
Description : It is the ratio of the radiated to the reflected energy:
Last Answer : Radiation efficiency
Description : It is the resistance that, if it replaced the antenna, would dissipate exactly the same amount of power that the antenna radiates
Last Answer : . Radiation resistance
Description : Plots of field strength or power density with respect to the value at a reference point.
Last Answer : relative radiation pattern
Description : The radiation pattern plotted in terms of electric field strength or power density
Last Answer : absolute radiation pattern
Description : The line bisecting the major lobe, or pointing from the center of the antenna in the direction of maximum radiation is called _____
Last Answer : line of shoot
Description : A special type of transmission line that consist of conducting metallic tube through which high frequency electromagnetic energy is propagated
Last Answer : waveguide
Description : If energy is applied at the geometrical center of antenna, the antenna is said to be ___
Last Answer : center-fed
Description : The radiation pattern of collinear and a broadside antenna is __
Last Answer : bidirectional
Description : Hertz antenna are predominantly used with frequencies above
Last Answer : 2MHz
Description : The point on the antenna where the transmission line is connected is called _____
Last Answer : feedpoint