2. Spectrum Efficiency of a cellular network is, A. Increase in delay d. Different spectrum and same PN code, ANSWER: Same spectrum and different PN code, 77)   Advantage of using Spread Spectrum modulation is/are, 1. B. Waveform coders 2. B. B 17. Limited spectrum is required e. Both b and c are correct, 142)   The advantage of using SDMA over other spread spectrum technique is, a. 3. b. 1, 2 and 3 are correct c. Use of different frequencies at same time slot B. PN sequence for modulation D. Frequency selective fading, 146. Increased immunity to jamming c. Hand off Phase 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. Fundamentals of mobile communication - 1 - MCQs with answers 3G Cellular Networks Q1. 3. d. Use of different time slot for different frequency channels, ANSWER: Use of same frequency channel for different time slot, a. TDMA cellular systems Propagation delays are eliminated D. 300 KHz, 21. ... questions and answers Sample/practice exam 2019, questions and answers Sample/practice exam 2019, questions and ... Business Communications (04 71 100) Get the App. c. MSC need not monitor the signal strength b. These Communication Objective Questions with Answers are important for competitive exams UGC NET, CAT, CMAT, GATE, IBPS Specialist Recruitment Test. b. Uses different antenna heights C. Using different antennas d. All of the above, 98)   Speech Coders are categorized on the basis of, a. C. 1 and 4 are correct 3. D. All of the above, Ans:- Number of bit errors during transmission, 82. Different amplitudes * To get Clear; figures / diagrams, tables / values, answers / explanations and more, download the Communications MCQs Multiple Choice Questions and Answers PDF. b. c. All the three are correct Mobile station battery consumption is low Frequency modulation C. ASK D. FSK. e. Both a and b, 151)   Small scale multipath propagation is caused due to waves with, 1. d. All of the above, a. Equalizer structure B. CDMA D. All of the above, A. Transmitter Low frequency bands of speech c. Low earth orbit satellites Read More. Its ability to frequency reuse, A. You will get your online test score after finishing the complete test. The speech coders are selected on the basis of, 1. Each user is assigned unique frequency slots 1 and 2 are correct e. Both a and c, 1. C. Mobility In Network c. Directly proportional to square of Doppler spread Time diversity Mobile Internet 3. C. Low co-channel interference Working of Adaptive Equalizers include, A. C. Increased spectral efficiency D. < 2 GHz, 10. 2. Cheaper filters with less complicated logic functions Direct RF pulse system helps in calculating, A. 2. D. Both a and b are correct Free download in PDF Mobile Communication Multiple Choice Questions with Answers for competitive exams. 4G mobile communication, 1. 2. 25)   The interference between the neighboring base stations is avoided by, a. Assigning different group of channels B. d. Directly proportional to twice of Doppler spread, ANSWER: Directly proportional to Doppler spread, 145)   Types of small scale fading, based on Doppler spread are, a. C. Two calls in progress in nearby mobile stations Cross talk D. All of the above, A. Radius of the cell b. 2. B. Erlangs C. Power delay of the channel Low spectral efficiency Increase in probability of collision b. b. Windowing, Pre emphasis, segmentation, filtering c. Signal to noise ratio 8 users - 2 1 and 4 are correct B. 3. Coherence Bandwidth of the channel is more than bandwidth of transmitted channel B. d. All four are correct, 121)   The advantages of FDMA over TDMA includes, 1. Multiplexing is transmitting multiple signals over a single communications line or computer channel. The guard interval is provided in OFDM, A. Effective Isotropic Radiated Power Rate of change of multipath radio channel 1, 2 and 3 are correct Fast fading Home » Mobile Communication Questions » 300+ TOP MOBILE COMMUNICATION Multiple Choice Questions & Answers, 1. 1 and 3 are correct 1 and 2 are correct D. All the four are correct, 1. c. The queue may be provided Avoids ISI D. All of the above, Ans:- Assigning different group of channels, 26. b. Waveform coders List and explain two (2) reasons why communication skills is important in our lives. Frequency synchronization problems D. All of the above, 46. b. Different phase, 152. b. Its ability to frequency reuse, a. c. Waiting for channel allocation 1)   The modulation technique used for mobile communication systems during world war II was, a. Amplitude modulation d. None of the above, ANSWER: Multipath delay spread small scale fading, 147)   In Frequency Selective Fading, the, a. c. Both a & b Multiple users at same frequency, 135)   The troubles that OFDM faces over other spread spectrum techniques are, 1. 1 and 4 are correct The power received by the mobile station from other base station is more than the serving base station Multiple users on single channel d. None of the above, a. c. Both a & b Single transmission in one time slot 2. d. Communication channel, 1. D. All of the above, 51. 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. 38)   In Dynamic channel assignment, any channel which is being used in one cell can be reassigned simultaneously to another cell in the system at a reasonable distance. Rate of convergence 4. B. Hopping rate greater than or equal to information symbol rate d. All of the above, ANSWER: Number of operations for one iteration of algorithm, 90)   The algorithms acquired for adaptive equalization are, 1. Multi path propagation C. 2 and 4 are correct B. Welch window Inaccuracies in the mathematical analysis C. Envelope detection, encoding, sampling, multiplexing C. Quantizer C. 1, 2 and 4 are correct Apprentice Telecommunications Technician Test CTT. d. All the four are correct, 131)   The advantages of using a CDMA technique over other spread spectrum techniques are, 1. The 2G GSM technology uses a carrier separation of, A. Time required to attain a call with the busy base station Obstacles 2. C. Maximum Likelihood Sequence Estimation, A. C. Propagation of call 3. d. Amplitude, a. D. All of the above, 14. Number of operations for one iteration of algorithm Excess delay Temporary failure of message transfer C. The channel spectrum Single user on multiple channels as per demand c. 1, 2 and 3 are correct In Dynamic channel assignment, any channel which is being used in one cell can be reassigned simultaneously to another cell in the system at a reasonable distance. b. CDMA d. < 2 GHz, 10)   Half duplex system for communication has, a. Communication in single direction Each user has unique PN code, a. C. λ/ sec 2. C. 2 and 3 are correct e. Both a and c, A. D. All of the above, A. Multiple choice questions with answers Organizational Behaviour & Management (Hogeschool Rotterdam) Multiple choice questions with answers Organizational Behaviour & Management (Hogeschool Rotterdam ... Download Full PDF Package. D. None of the above, A. These short solved questions or quizzes are provided by Gkseries. Cell size Indirectly proportional to Doppler spread The wide band usage in CDMA helps in, 1. Our 1000+ Wireless & Mobile Communications questions and answers focuses on all areas of Wireless & Mobile Communications subject covering 100+ topics in Wireless & Mobile Communications. Limited internet browsing 2. b. b. The power received by the mobile station from other base station is more than the serving base station 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 D. Both a and b are correct Direct sequence spread spectrum demodulation uses, A. Blocking is reduced c. Irrespective of the location of the user Type of modulation technique used e. Both b and c, a. b. Strong destructive interference B. ______________ often leads to one party gaining an advantage over the other, if it can negotiate at the … b. C. II bits 1. Coded sequence, a. Time Ability of a user to access trunked system during busy hour Sensitivity to Doppler shift Frequency change, 89)   Computational complexity of an algorithm refers to the, a. C. MSC need not monitor the signal strength Wireless Communication Quiz Our quizzes are multiple choice questions. 1 and 3 are correct B. e. Both a and c, a. Transversal filter C. Frequency selective fading 24)   In TD-SDMA, there is a frame of _____milliseconds and the frame is divided into _____ time slots. Linearity, a. 4. Polarization diversity, A. A 18. Same spectrum and different PN code 2 and 3 are correct When all of the radio channels are in use in a trunking system, A. c. Increased spectral efficiency C 13. Reflection Top Telecommunication Quizzes Trivia Questions amp Answers. B. Same spectrum and same PN code D. Both a and c b. Receiver D. All of the above, 34. d. Both a and b c. Leakage of energy signals by non cellular systems into cellular frequency band B. Send numeric messages d. 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Impulse response is time varying Maximum Likelihood Symbol Detection b. No reflection occurs at the first medium The signal is transmitted using multiple channels Interference B 20. d. High speed users with large coverage area, ANSWER: Ability of a user to access trunked system during busy hour, a. Erlangs /MHz /km2 Minimization of weighted mean square error 4G mobile communication, 1. Larger capacity 2. Capacity of the system is increased b. e. All a, b and c are correct, 84. c. 2 and 4 are correct Several sub receivers 2. D. Both a and b B. c. 1 and 4 are correct 2. Angle of incidence of wave, A. D. Different spectrum and same PN code, Ans:- Same spectrum and different PN code, 77. Updated D. Qualcomm, Ans:- Nippon Telephone and Telegraph (NTT), A. Simplex systems The effects of small scale multipath propagation are, 1. 2. Gets blocked d. All of the above D. SDMA cellular systems, 126. d. Both a and b are correct D. None of the above, 37. 3. d. Multiplexers, 107)   In voice excited vocoders, PCM transmission helps in transmission of, a. b. Receiver d. All of the above, 48)   Trunking in a cellular network refers to, a. 4. Mobile radio channel may be modeled as linear filter B. D. Both b and c b. Estimation of transmitted signal, correlator, demodulation, bit decision C. 1 and 4 are correct C or D 2. Random frequency modulation B. FDMA cellular systems 2. B. Refraction Calculations and analysis is increased Coherence Bandwidth of the channel is more than bandwidth of transmitted channel b. Ib bits c. Yagi uda antennas 1, 2 and 3 are correct 2. B. 2. Digital European Cellular Telex 2. B. c. New channel allocation is done c. 1, 2 and 4 are correct Resistance to multipath fading More than one frequency hop during each symbol c. Subtraction of transmitted signal and impulse response D. 116 users, A. B. 4. Transfers the call Spread spectrum technology Time required for synchronization between the transmitter and the receiver TELECOM MCQS … d. All of the above, ANSWER: Assigning different group of channels, 26)   Radio capacity may be increased in cellular concept by, a. e. Both a and c, 31)   The advantage of using frequency reuse is, a. The minimum spectrum allocation required for W-CDMA is, 23. c. Multiple users on multiple channels at different time slots B. e. Both a and c, A. Transversal filter Impulse response in phase domain Spectrum unavailability Smart antennas pointing towards mobile stations C. Communication in both directions at the same time In TDMA, the user occupies the whole bandwidth during transmission, A. D. All four are correct, 1. D. None of the above, 62. b. Modulation technique C. The queue may be provided b. Transmitters of base stations Send alphanumeric messages Frequency non selective fading D. FSK. PN sequence for modulation 4. Equalization based, A. Correlator, estimation of transmitted signal, demodulation, bit decision b. 3. Robustness to transmission errors c. ASK b. c. Large coherence time of the channel as compared to the delay constraints Distance between the transmitter and receiver, A. d. Sampling, Envelope detection, multiplexing, encoding, ANSWER: Envelope detection, sampling, encoding, multiplexing, 106)   Vocal tract cepstral coefficients and excitation coefficients are separated by, a. Samplers 3. 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 Impulse response is time varying D. High speed users with large coverage area, Ans:- Ability of a user to access trunked system during busy hour, A. Erlangs /MHz /km2 PCM, DPCM, DM, ADPCM are the types of, A. Vocoders B. C. Part of energy gets absorbed Frequency variations at the source Free download in PDF Mobile Communication Multiple Choice Questions and Answers for competitive exams. d. Demand access protocol, 140)   The increase in number of users in PURE ALOHA causes, a. Polarization of the incident wave Faster handoffs 4. C. Voice message 4. Division is simpler Calculations and analysis is increased The small unused bandwidth between the frequency channels to avoid interference Division is simpler c. Sub band coding Increase in probability of collision B. CDMA/FDD Computational complexity of an algorithm refers to the, A. C. Transceiver 2 and 4 are correct c. Blocked calls ISI is lesser, A. 2. D. None of the above. b. c. Both a & b C. Hybrid access protocol The serving base station requests for a channel from MSC MULTIPLE CHOICE QUESTIONS – WIRELESS COMMUNICATION 1. c. Hybrid access protocol d. None of the above. 3. d. PLL, 76)   In spread spectrum technique, the multiple users are assigned with, a. c. Low pass filter The techniques used for small scale multipath measurements are, 1. d. Qualcomm, ANSWER: Nippon Telephone and Telegraph (NTT), a. Simplex systems Number of bit errors during transmission Uses large and small cells D. All of the above, 42. B. Lattice filter c. Different spectrum and different PN code Received power falls with square of the distance between the transmitter and receiver Fixed assignment is possible c. Digital European Cordless Telephone It rejects narrow band interference 2. d. None of the above, ANSWER: Minimum time for change in magnitude and phase of the channel, a. The science of communication and control is known as _____. In GSM Codec, the bits encoded for forward error correction are, A. Ia bits e. Both b and c, a. Blocking is reduced Better transmission quality No, at this stage it is one-way communication b. b. 4. c. Two calls in progress in nearby mobile stations c. Part of energy gets absorbed c. Voice message Cross talk Half duplex system for communication has, A. Communication in single direction 3. These short solved questions or quizzes are provided by Gkseries. 4. Equalization based, 96)   The RAKE receiver involves the steps, a. Correlator, estimation of transmitted signal, demodulation, bit decision Polarization of the incident wave Less complexity c. Encoders Coded sequence, A. To eliminate ISI D. Both a and b Large coherence time of the channel as compared to the delay constraints B. Ib bits The methods used for non linear equalization are, A. Increased immunity to interference C. Same spectrum may be allocated to other network B. Fixed Practice these MCQ questions and answers for preparation of various competitive and entrance exams. C. AT&T Bell Laboratories 3. 3. B. Digitized Emergency Cellular Telephone b. Vocoders FIR filter The Linear Equalizer may be implemented as, A. When mobile station moves between two cellular systems D. Both a and b are correct Limited internet browsing 4. B. name chapter 1--communicating in today's workplace description instructions modify add question here question multiple choice points modify remove question. Speech coding technique that is independent of the source is, A. Vocoders Obstacles Ans:- Frequency modulation. B. D. All of the above, A. D. Both a and c are correct, Ans:- One or more symbols transmitted in time interval between frequency hops, A. D. None of the above, A. A 8. b. The bandwidth of modulated signal The test contains 11 questions and there is no time limit. b. Half duplex mode More than one frequency hop during each symbol 3. Token ring C 10. 2. d. All of the above, 32)   The strategies acquired for channel assignment are, a. 2. 4. d. Both a and b are correct Speech coders c. CDMA cellular systems B. Adder b. 3. In voice excited vocoders, PCM transmission helps in transmission of, A. Different propagation delays B. Termination of a call To eliminate the need of pulse shaping filter MCQ quiz on Mobile Communication multiple choice questions and answers on Mobile Communication MCQ questions on Mobile Communication objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams Page 9 1 and 3 are correct B. The channel allocated is not available You can answer the quiz questions by clicking on the "radio" buttons. The access to the system is denied 2. These days internet is highly in trend, you can practice internet objective questions and answers for better performance . The channel allocated is not available C. CDMA cellular systems Distance between the transmitter and receiver, a. The received signal from a multipath channel is expressed as, A. Convolution of transmitted signal and impulse response 1, 2 and 3 are correct Geometry of the object The small unused bandwidth between the frequency channels to avoid interference Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. b. d. The spectrum acquired by the noise between the signal, ANSWER: The small unused bandwidth between the frequency channels to avoid interference, 1. 1 and 2 are correct B. Properties of the material at which reflection occurs c. Excess delay spread Better measure of security c. High symbol rate The bandwidth allotted to the signal 3. d. 2 and 3 are correct, 63)   When a wave falls on a perfect conductor, a. The privacy due to unique codes Better measure of security b. D. Communication channel, 1. b. Vocoders Using same communication medium Sensitivity to Doppler shift C. Low earth orbit satellites Multiple choice questions have four possible answers. e. Both b and c, 33)   In a fixed channel assignment strategy, if all the assigned channels are occupied, the call, a. b. CDMA/FDD Electronics and Communication Engineering Questions and Answers. 3. c. Channel allocation for transmission B. d. None of the above, 88)   The performance of algorithms for Adaptive Equalization are given by, 1. Spectrum unavailability Half duplex mode ISI is lesser, a. b. c. 1, 2 and 4 are correct Time synchronization problems 4. 2. b. b. d. All of the above, 46)   In Mobile Assisted Handoff (MAHO), the handoff takes place when, a. Fingers 2. B. Interference in frequency bands may lead to, A. Mobile Identification Number In a dynamic channel assignment strategy, A. 2. Suitable for noisy environments, 103. c. The channel spectrum Fresnel Reflection Coefficient is a factor of, 1. C. Coherence Bandwidth of the channel is equal to bandwidth of transmitted channel Speech Coders are categorized on the basis of, A. C. Both a & b d. Frequency non selective fading, 149)   The power delay profile helps in determining, a. 2 and 4 are correct This top 10 IoT interview questions and answers will help interviewee pass the job interview for IoT job position with ease. B. c. Bandwidth of the signal Temporary failure of message transfer, A. 2. More than one frequency hop during each symbol Phase e. Both b and c, 14)   Increase in Co- channel reuse ratio indicates, a. Effective Isotropic Radiated Power I am Sasmita . 4. Numerical properties Resistance to multi path fading Use of spatial locations of mobile units within the cell C. 2 and 4 are correct c. 32 users And, if you really want to know more about me, please visit my "About" Page. Interacting with People – Multiple choice Questions (with answers) 28518 – Interact with People to provide support in a health or wellbeing ... a. Large coherence time of the channel as compared to the delay constraints C. The mobile station has no signal B. The process of transferring a mobile station from one base station to another is, A. MSC B. C. Inputs and outputs of repeaters Encoding digital data d. Both a and b Low efficiency due to guard intervals, 136)   The guard interval is provided in OFDM, a. b. B. Tracking Smart antenna technology Synchronization information C. Both a & b 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. D. Channel allocation for transmission, 100. 1, 2 and 3 are correct c. Same spectrum may be allocated to other network D. Each signal is modulated with frequency modulation technique, Ans:- Different users in different time slots, 123. D. 2 and 3 are correct, 63. 2. When a wave falls on a perfect conductor, A. D. All the four are correct, 78. B. Random frequency modulation d. All of the above, ANSWER: Signal fading due to Doppler shift in the channel, 1. 4. 3. d. All the three are correct, 72)   According to Friis free space equation, 1. Received power increases with gains of transmitting and receiving antennas, 1. D. Use of different time slot for different frequency channels, Ans:- Use of same frequency channel for different time slot, A. TDMA cellular systems 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 2. B. Sampling, Envelope detection, encoding, multiplexing 3. D. None of the above, 30. D. All the four are correct, 1. D. Hamming window, 113. A. IEEE 802.11 B. Time dispersion, 153)   Impulse response of a multipath channel is determined by the fact that, a. 4. e. Both a and c, 115. C. Digital European Cordless Telephone Avoids ISI Use of same frequency channel for same time slot C. 1, 2 and 4 are correct B. B. B. Windowing, Pre emphasis, segmentation, filtering 4. Robustness to transmission errors 1 and 3 are correct D. None of the above, Ans:- Communication in single direction at a time, A. B. rms delay spread e. Both b and c, A. C. Block transform coding I am an M.Tech in Electronics & Telecommunication Engineering. C. 2 and 3 are correct d. dB/sec, 57)   The techniques used to improve the capacity of cellular systems are, a. Splitting Resistance to multipath fading 3. The advantages of using a CDMA technique over other spread spectrum techniques are, 1. c. Multiple pulses per period C. Both a & b Distance between the centers of the co channel cells Matched filter 3. B. Satellite communication systems and Microwave line of sight radio links Focusing radio energy towards ground B. Wireless Communication Quiz Our quizzes are multiple choice questions. D. Frequency non selective fading, 149. Which of the following is/are the main part(s) of basic cellular system. A 19. In a fixed channel assignment strategy, if all the assigned channels are occupied, the call, A. Fixed channel assignment C. Hand off 2. The increased capacity of SDMA is due to, A. Scheduled access protocol Distance between the centers of the co channel cells 3. C. Each user is assigned a unique code sequence Digital European Cellular Telex Directly proportional to Doppler spread b. b. 3. Increased immunity to interference Providing Guard channel Impulse response in phase domain Free download in PDF Communication Multiple Choice Questions(MCQs) with Answers for competitive exams. c. It approximates circular radiation pattern This paper. The steps involved in Channel vocoders for speech transmission are, A. 2. Coherence Bandwidth of the channel is less than bandwidth of transmitted channel b. B. D. All four are correct, A. 2. D. All of the above, Ans:- Multiple versions of signals are transmitted at different time instants, 1. Multiple users occupy different spectrum at a time, 1. Current signal sample is obtained from linear combination of past samples ———– introduced Frequency Modulation for mobile communication systems in 1935. The preamble contains Address of base station and subscribers, 1. Process of transferring the call to the new base station B. Queuing of handoffs c. Full duplex systems d. All are correct, a. Different amplitudes B. 2. Voice channels are not permanently assigned Guard channel concept c. Digital modulation formats 1 and 2 are correct b. e. Both a and c, 1. B. D. Forward channel, A. Wireless concept of making calls Multiple users on single channel Wide band digital communication e. All a, b and c are correct, 92)   Diversity employs the decision making at, a. Transmitter Every user has assigned unique frequency slot d. None of the above, ANSWER: Communication in single direction at a time, a. Geometry of the object Time synchronization problems 1 and 2 are correct In spread spectrum technique, the multiple users are assigned with, A. d. David Bohm, 3)   The early FM push-to-talk telephone systems were used in, a. Simplex mode d. Both a and b 64 users Hexagon shape is used for radio coverage for a cell because, A. C. Both a & b Large bandwidth c. The mobile station has no signal B. Frequency domain channel sounding, Hi! C. < 1 GHz e. Both a and c, 1. c. Flat fading 4. 1 and 3 are correct d. All of the above. Fixed assignment is possible Frequency modulation INFORMATION TECHNOLOGY QUESTIONS AND ANSWERS … PDF File: Information Technology Questions And Answers Multiple Choice – PDF-ITQAAMC-15LIOM-9 4/4. These short objective type questions with answers are very important for Board exams as well as competitive exams. c. Regular e. Both a and c, a. Flat fading or frequency nonselective fading is a type of, A. Multipath delay spread small scale fading d. SDMA cellular systems, 126)   TDMA is employed with a TDMA frame that has preamble. 3. d. 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Flat fading d. All of the above, 58)   Distributed antenna systems are used at, a. Transmitters of mobile systems Multiple carrier frequencies Smart antenna technology 2. Impulse response of a multipath channel is determined by the fact that, A. Multiple choice and open answer questions Try the multiple choice questions below to test your knowledge of this chapter. MCQ quiz on Mobile Communication multiple choice questions and answers on Mobile Communication MCQ questions on Mobile Communication objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams. d. Digital European Cellular Telephone, ANSWER: Digital European Cordless Telephone, 5)   World’s first cellular system was developed by, a. Nippon Telephone and Telegraph (NTT) Is important in our lives used in, 1 denied C. the queue may be provided All. D. Multiplexers, 107 ) in a Dynamic channel assignment strategy, a OFDM,.! 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