B. Sectoring Limited internet browsing 3. Minimization of weighted mean square error 4. Type of modulation technique used Cross talk C or D 2. B. They are among low bit rate vocoders, a. 1, 2 and 3 are correct The two common multiplexing techniques are FDM, which separates signals by modulating the data onto different carrier frequencies, and TDM, which separates signals by interleaving bits one after the other. C. Spectrum C. 1, 2 and 3 are correct MULTIPLE CHOICE QUESTIONS WITH ANSWERS ON NETWORK. C. Digital modulation formats You will get your online test score after finishing the complete test. MOBILE COMMUNICATION Multiple Choice Questions :-1. Avoids ISI Cybernetic. Geometry of the object Frequency of the incident wave, A. C. Use of different frequencies at same time slot 3. Envelope detection, sampling, encoding, multiplexing C. One or more symbols transmitted between frequency hops 2. The speech coders are selected on the basis of, 1. 3. 3. d. All of the above, 99)   Waveform coders and Vocoders are the types of, a. C. CDMA cellular systems The user is blocked e. Both a and b, 151. 1, 2 and 3 are correct Capacity of the system is increased Training B. d. All of the above, ANSWER: Focusing radio energy towards ground, 60)   Diffraction, at high frequencies, depends upon, 1. 2. About us; d. FSK. d. Block transform coding, 105)   The steps involved in Channel vocoders for speech transmission are, a. C. Large coherence time of the channel as compared to the delay constraints d. All the three are correct, 72)   According to Friis free space equation, 1. b. CDMA c. One or more symbols transmitted between frequency hops C. The channel spectrum D. Digital European Cellular Telephone, Ans:- Digital European Cordless Telephone, 5. The small unused bandwidth between the frequency channels to avoid interference b. The increased capacity of SDMA is due to, A. D. None of the above, 30. b. B. Waveform coders Drop in signal to noise ratio Low frequency bands of speech 1 and 2 are correct Fixed channel assignment High traffic conditions C. Digital European Cordless Telephone c. The call gets blocked if all the channels of the cell are occupied c. 2 and 4 are correct C. Increase in spectrum 2, 3 and 4 are correct b. c. 2 and 3 are correct d. The spectrum acquired by the noise between the signal, ANSWER: The small unused bandwidth between the frequency channels to avoid interference, 1. A single, overall cost of capital is often used to evaluate projects because: a. c. Frequency selective fading All the Multiple Choice Question and Answer (MCQs) have been compiled from the books of Data Communication and Networking by the well known author behrouz A forouzan. c. AT&T Bell Laboratories b. Different amplitudes 1, 2 and 3 are correct Resistance to multipath fading Calculations and analysis is increased c. When mobile station receives more power from other base station than the serving base station 2. b. Vocoders d. Both a and c are correct, ANSWER: One or more symbols transmitted in time interval between frequency hops, a. B. d. All of the above, 98)   Speech Coders are categorized on the basis of, a. Every user has assigned unique frequency slot 1. C. Low co-channel interference B. Queuing of handoffs The process of transferring a mobile station from one base station to another is, A. MSC Termination of a call The modulation technique used for mobile communication systems during world war II was. B. d. All are correct, a. Two base stations operating in same frequency band Time-domain graph plots Multiple Choice Question and Answer. c. Sub band coding 1 and 2 are correct c. Both a & b 1 and 2 are correct B. Suitability for frequent handoffs b. Sectoring b. TDMA is a multiple access technique that has, A. * To get Clear; figures / diagrams, tables / values, answers / explanations and more, download the Communications MCQs Multiple Choice Questions and Answers PDF. d. All of the above, a. Transmitter 4. Synchronization information Capacity of the system is increased b. b. Cordless 3. A. Amplitude modulation B. c. Bandwidth of the signal b. Roamer The free space model of propagation refers to, 1. D. Both a and b c. Diffraction Time dispersion, 153. 2. Multiple choice questions with answers Organizational Behaviour & Management (Hogeschool Rotterdam) Multiple choice questions with answers Organizational Behaviour & Management (Hogeschool Rotterdam ... Download Full PDF Package. b. 2. 3. B. Coherence Bandwidth of the channel is more than bandwidth of transmitted channel d. Both a and c b. Bellcore and Motorola D. None of the above, A. 3. D. All are correct, A. C. Frequency selective fading Advantage of using Dynamic channel assignment is, A. Is a function of transmitting and receiving antenna gain b. These short objective type questions with answers are very important for Board exams as well as competitive exams. D. Both a and b are correct D. All of the above. d. All the four are correct, 1. d. All of the above, ANSWER: Assigning different group of channels, 26)   Radio capacity may be increased in cellular concept by, a. d. Both a and c e. Both a and c, 31)   The advantage of using frequency reuse is, a. d. 116 users, a. d. All of the above, ANSWER: Number of operations for one iteration of algorithm, 90)   The algorithms acquired for adaptive equalization are, 1. 2. The serving base station requests for a channel from MSC Computational complexity of an algorithm refers to the, A. B. C. High symbol rate C. Both a & b Providing Guard channel Different phase, 152)   The effects of small scale multipath propagation are, 1. c. Transmitter and receiver Uses large and small cells Fixed assignment is possible Least mean squares algorithm Reflection coefficient is zero Wireless Communication Quiz Our quizzes are multiple choice questions. 35)   In a dynamic channel assignment strategy, a. This set of Professional Communication Multiple Choice Questions & Answers (MCQs) focuses on “Barriers of Communication”. Temporary failure of message transfer, A. Increase in Co- channel reuse ratio indicates, A. 3. C. Block transform coding Inaccuracies in the mathematical analysis Frequency variations at the source Each user is assigned unique frequency slots Random frequency modulation 3. Fast fading D. None of the above, Ans:- Communication in single direction at a time, A. B. d. All of the above, a. B. Transmitters of base stations b. b. Lattice filter Fading of the received radio signals in a mobile communication environment occurs because of ..... A) Direct propagation Mobile Identification Number Several correlators c. Coverage zone approach 3. d. None of the above, ANSWER: Communication in single direction at a time, a. C. λ/ sec 1 and 2 are correct D. Sampling, Envelope detection, multiplexing, encoding, Ans:- Envelope detection, sampling, encoding, multiplexing, 106. 2. A 9. D. The spectrum acquired by the noise between the signal, Ans:- The small unused bandwidth between the frequency channels to avoid interference, 1. C. Different spectrum and different PN code d. All of the above, 14)   IMT-2000 is a digital mobile system that functions as, a. Pager Half duplex systems According to Friis free space equation, 1. B. Welch window Telecommunication Mcqs With Answers PDF Download. c. 1, 2 and 3 are correct The traffic carried by whole network Coded sequence, A. Rate of change of multipath radio channel ISI is lesser, a. d. Estimation of transmitted signal, demodulation, bit decision, correlator, ANSWER: Correlator, estimation of transmitted signal, demodulation, bit decision, 97)   Search window of a RAKE receiver is, a. One or more symbols transmitted in time interval between frequency hops Inaccuracies in the mathematical analysis D. Both a and b The type of frequency domain coding that divides the speech signal into sub bands is, A. Waveform coding Current signal sample is independent of past samples B. Coded sequence, a. The power delay profile helps in determining, A. TELECOM MCQS … d. Both a and b Time synchronization problems b. Multiple carrier frequencies The call is served by unused channels of the cell 1 and 2 are correct b. Waveform coders D. All of the above, 48. Spread spectrum technology B. Time required to attain a call with the busy base station d. PLL, 114)   In GSM Codec, the bits encoded for forward error correction are, a. Ia bits 2. In voice excited vocoders, PCM transmission helps in transmission of, A. c. Part of energy gets absorbed Large bandwidth 2. Better transmission quality c. Hand off B. d. All four are correct, a. D. High speed users with large coverage area, Ans:- Ability of a user to access trunked system during busy hour, A. Erlangs /MHz /km2 B. Wide band digital communication D. All four are correct, 122. Increased immunity to jamming B QUESTION 1 1. B. Distributed antenna systems are used at, A. Transmitters of mobile systems D. 2 and 3 are correct, 63. The time span for which the equalizer converges depends upon, 1. e. Both b and c, A. 35. Frequency modulation C. ASK D. FSK. b. ______________ often leads to one party gaining an advantage over the other, if it can negotiate at the … b. Spread spectrum technology PDF | On Apr 2, 2013, mahendra Kumar published multiple choice questions on wireless communication | Find, read and cite all the research you need on ResearchGate 1 and 3 are correct d. SDMA cellular systems, 126)   TDMA is employed with a TDMA frame that has preamble. e. Both a and c, 1. b. e. Both a and c, a. b. b. Receiver d. All of the above, 46)   In Mobile Assisted Handoff (MAHO), the handoff takes place when, a. B. c. Inputs and outputs of repeaters c. 32 users 1 and 4 are correct C. Multiple users on multiple channels at different time slots Single user on multiple channels as per demand Learn daily practice multiple choice questions and answers for Data Communication and Computer Networks ebooks pdf free download. C. The queue may be provided B. The shape of the cellular region for maximum radio coverage is, 28. Frequency diversity C. Irrespective of the location of the user B. Focused signal transmitted into narrow transmission beams B. D. Each signal is modulated with frequency modulation technique, Ans:- Different users in different time slots, 123. Increasing the number of base stations & reusing the channels d. All the four are correct, 78)   Direct sequence spread spectrum demodulation uses, a. Two calls in progress in nearby mobile stations B. 1, 2 and 4 are correct Cheaper filters with less complicated logic functions High frequency bands of speech Impulse response in frequency domain C. Full duplex mode b. Distance between the subscriber and the base station Interference rejection capability D. None of the above, 9. b. c. 1, 2 and 4 are correct d. Both a and b INFORMATION TECHNOLOGY QUESTIONS AND ANSWERS MULTIPLE CHOICE … Multiple Choice Pdf. d. Frequency selective fading, 146)   Flat fading or frequency nonselective fading is a type of, a. Multipath delay spread small scale fading 4. 3. Several sub receivers Zero forcing algorithm 1, 3 and 4 are correct Practice Multiple Choice Questions for Data Communication and Networking of computer awareness for SSC and banking exams. Several sub receivers Number of bit errors during transmission 2. Commonly used mode for 3G networks is, 22. Resistance to multipath fading B. Time synchronization problems D. All the four are correct, 1. To eliminate the need of pulse shaping filter C. Hopping rate greater than or equal to information symbol rate b. Modulation technique d. All are correct, a. b. Slow fading Uses large and small cells c. Coherence Bandwidth of the channel is equal to bandwidth of transmitted channel Half duplex mode Multiple users, 75. Multi path propagation Missed calls B. The privacy due to unique codes When mobile station moves in two cellular systems with different MSC Cheaper filters with less complicated logic functions Independent of the signal source Current signal sample is obtained from linear combination of past samples D. Both a and c Multiple carrier frequencies C 4. The power received by the mobile station from other base station is more than the serving base station d. All four are correct, 121)   The advantages of FDMA over TDMA includes, 1. D. All of the above, Ans:- Signal fading due to Doppler shift in the channel, 1. e. None of the above, ANSWER: Convolution of transmitted signal and impulse response, 155)   Direct RF pulse system helps in calculating, a. d. None of the above. a) Noise b) Semantic problems c) Cultural barriers d) Over communication View Answer d. None of the above, 88)   The performance of algorithms for Adaptive Equalization are given by, 1. 2. A call within the cell D. Amplitude, A. d. All of the above, ANSWER: Number of bit errors during transmission, 82)   The digital modulation technique used in frequency selective channels is, 83)   Working of Adaptive Equalizers include, a. B. D. Both a and b C. 2 and 4 are correct Induced delays Multiple choice questions have four possible answers. In a fixed channel assignment strategy, A. Properties of the material at which reflection occurs The interference between the neighboring base stations is avoided by, A. Assigning different group of channels The 2G GSM technology uses a carrier separation of, A. 4. Interference Decision Feedback Equalization d. Pre emphasis, segmentation, filtering, windowing, ANSWER: Pre emphasis, segmentation, windowing, filtering, 112)   The windowing technique used for speech coding in GSM Codec is, a. Blackman window b. B 7. More storage required Sampling, Envelope detection, encoding, multiplexing 1 and 2 are correct Demand assignment is possible b. e. Both a and c, 31. b. D. Pre emphasis, segmentation, filtering, windowing, Ans:- Pre emphasis, segmentation, windowing, filtering, 112. D. All of the above, Ans:- Number of operations for one iteration of algorithm, 90. b. rms delay spread C. Propagation of call C 3. Received power increases with gains of transmitting and receiving antennas, 1. Multiple Choice Questions and Answers By Sasmita January 9, 2020 1) The modulation technique used for mobile communication systems during world war II was a. B. Multiple user access c. Both a & b A question may or may not specify the number of choices to select. C. 2 and 3 are correct Frequency modulation 1 and 2 are correct D. All of the above C. When mobile station receives more power from other base station than the serving base station e. Both a and c, 1. B 20. A 19. Properties of the material at which reflection occurs D. Both a and b are correct d. All of the above, ANSWER: Accommodating large number of users in limited spectrum, 49)   When all of the radio channels are in use in a trunking system, a. C. Inputs and outputs of repeaters D. All of the above, A. TDMA Missed calls Use of same frequency channel for same time slot c. Decreasing the S/N ratio at the antenna input C. 2 and 3 are correct 2. c. Is kept on waiting b. Erlangs 2. All the Multiple Choice Question and Answer (MCQs) have been compiled from the books of Data Communication and Networking by the well known author behrouz A forouzan. B. The channel allocated is not available d. All of the above, a. c. More battery consumption 1 and 3 are correct C. Multiplexed signals Why are waves with a very low frequency not used for data transmission in computer networks? D. All of the above, 32. 4G Multiple Choice questions and answers pdf free download for freshers experienced 4G faqs,Objective certification,Interview questions. d. Both a and b 2. The signal is transmitted using multiple channels B. e. Both a and c, 1. d. None of the above, 87)   The methods used for non linear equalization are, a. The algorithms acquired for adaptive equalization are, 1. d. None of the above, 17)   2G CDMA standard – cdma one supports up to, a. 4. One or more symbols transmitted in time interval between frequency hops Why are waves with a very low frequency not used for data transmission in computer networks? C. Coherence Bandwidth of the channel is equal to bandwidth of transmitted channel Pitch detection is not required d. Coder and decoders have predetermined set of codes, ANSWER: The residue of subtraction of generated and original signal is quantized at the transmitter, 111)   The speech sequence in GSM Codec consists of, a. Pre emphasis, segmentation, windowing, filtering (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. C. Both a & b b. Receiver Numerical properties c. < 1 GHz MULTIPLE CHOICE QUESTIONS – WIRELESS COMMUNICATION 1. C. Quantizer C. Dynamic channel assignment Frequency of signal Multiple users occupy different spectrum at a time, 1. Direct RF pulse system Propagation delays are eliminated B. rms delay spread Addition of transmitted signal and impulse response The methods used for non linear equalization are, A. D. Both a and c d. None of the above, ANSWER: Increasing the number of base stations & reusing the channels, 27)   The shape of the cellular region for maximum radio coverage is, 28)   Hexagon shape is used for radio coverage for a cell because, a. 2. It rejects narrow band interference 1 and 2 are correct Amplitude of signal, 85)   The Linear Equalizer may be implemented as, a. It is vulnerable to timing problems, a. e. All a, b and c are correct, 84. d. Demand access protocol, 140)   The increase in number of users in PURE ALOHA causes, a. Guard channel concept Numerical properties B. Doppler spread small scale fading 4. c. Yagi uda antennas d. All of the above, ANSWER: Signal fading due to Doppler shift in the channel, 1. Practice these MCQ questions and answers for preparation of various competitive and entrance exams. Space diversity This paper.