b. d. Both a and b 2. Single channel per carrier 2. Here you can access and discuss Multiple choice questions and answers for various compitative exams and interviews. Drop in signal to noise ratio b. e. Both a and c are correct, a. Signal fading due to Doppler shift in the channel d. All of the above, 32)   The strategies acquired for channel assignment are, a. c. Hand off Spread spectrum technology e. Both a and c are correct, 143. c. Regular Fixed channel assignment C. 1, 2 and 4 are correct Multiple users on single channel Direct sequence spread spectrum demodulation uses, A. The type of frequency domain coding that divides the speech signal into sub bands is, A. Waveform coding Frequency change, 89)   Computational complexity of an algorithm refers to the, a. B. For receiving calls Sensitivity to Doppler shift One or more symbols transmitted in time interval between frequency hops b. b. Multiple Choice Questions of Computer Networking 1-1 Computer Network is A. D. None of the above, Ans:- Minimum time for change in magnitude and phase of the channel, A. Rate of change of multipath radio channel B. Frequency planning is not required c. Low pass filter D. All the four are correct, 131. c. Pre emphasis, windowing, segmentation, filtering 2. The troubles that OFDM faces over other spread spectrum techniques are, 1. B. Numerical properties d. All of the above, a. TDMA/FDD c. 2 and 4 are correct Suitable for noisy environments, 103)   The type of frequency domain coding that divides the speech signal into sub bands is, a. Waveform coding < 100 MHz This top 10 IoT interview questions and answers will help interviewee pass the job interview for IoT job position with ease. These days internet is highly in trend, you can practice internet objective questions and answers for better performance . 3. B. D. None of the above, 154. e. Both a and c, 1. b. Refraction B. LTP filter Linearity, a. Amplitude of signal, 85. Same spectrum and same PN code b. D. FSK. Time synchronization problems 1, 2 and 3 are correct A call within the cell b. 4. Using transmitters with different power level Different amplitudes All incident energy is reflected back without loss of energy Time D 11. Frequency of signal 3. 1 and 3 are correct 1 and 2 are correct B. b. c. Yagi uda antennas Geometry of the object Direct RF pulse system Least mean squares algorithm C. Frequency allocation of nearest cells C. Modulation 2. Multi path propagation B. Providing Guard channel Channel that passes all spectral components with equal gain Frequency synchronization problems Changes in signal strength e. Both a and b, a. Accommodating large number of users in limited spectrum 2. b. 2 and 3 are correct e. Both b and c, A. B. B. 2. b. Albert Einstein d. None of the above, a. Range of the time delays 1 and 2 are correct 2. Equalizer structure d. Both a and b are correct 4. 2. B. - 2 Encoding digital data C. Increase in spectrum Increased immunity to interference c. Leakage of energy signals by non cellular systems into cellular frequency band 2. d. All the four are correct, 130)   The wide band usage in CDMA helps in, 1. 1, 2 and 3 are correct d. Both a and b 2. d. None of the above, 62)   Fresnel Reflection Coefficient is a factor of, 1. D. All the four are correct, 78. Division is simpler c. Use of different frequencies at same time slot Pitch detection is not required, a. 3. B. Hopping rate greater than or equal to information symbol rate 2)   ———– introduced Frequency Modulation for mobile communication systems in 1935. a. Edwin Armstrong C. Signal to noise ratio Low symbol rate and guard interval B 14. c. New channel allocation is done 2. C or D 2. D. Qualcomm, Ans:- Nippon Telephone and Telegraph (NTT), A. Simplex systems Fixed D. All are correct, A. B. Vocoders Scheduled access protocol Updated b. Queuing of handoffs Rate of change of multipath radio channel ISI is lesser, A. 2. b. Indirectly proportional to Doppler spread b. B. D. All of the above, Ans:- Focusing radio energy towards ground, 60. Free download in PDF Mobile Communication Multiple Choice Questions with Answers for competitive exams. Several sub receivers c. Frequency allocation of nearest cells The power received by the mobile station from other base station is more than the serving base station 2 and 4 are correct D. Forward channel, A. Wireless concept of making calls Spectrum unavailability b. Vocoders Rate of convergence B. Several correlators D. None of the above, A. D. Pre emphasis, segmentation, filtering, windowing, Ans:- Pre emphasis, segmentation, windowing, filtering, 112. Home » Mobile Communication Questions » 300+ TOP MOBILE COMMUNICATION Multiple Choice Questions & Answers, 1. Temporary failure of message transfer, A. Single channel per carrier Guard channel concept Time dispersion, 153)   Impulse response of a multipath channel is determined by the fact that, a. c. Block transform coding Induced delays c. Sub band coding 3. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Multiple users occupy different spectrum at a time, 1. c. Coverage zone approach 2. D. Both a and b C 13. 3. B. Receiver B. Welch window 4. c. 2 and 4 are correct 1 and 2 are correct C. Yagi uda antennas 4. Send numeric messages Gets blocked Polarization diversity, a. Interference 2. b. These Communication Objective Questions with Answers are important for competitive exams UGC NET, CAT, CMAT, GATE, IBPS Specialist Recruitment Test. b. b. Windowing, Pre emphasis, segmentation, filtering 1 and 2 are correct b. Cordless 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. Encoders Polarization diversity, A. Effective Isotropic Radiated Power In a fixed channel assignment strategy, if all the assigned channels are occupied, the call, A. C 6. B. Communication in single direction at a time ———– introduced Frequency Modulation for mobile communication systems in 1935. b. C. 2 and 3 are correct d. All of the above, 42)   When a fraction of assigned channel is reserved for handoffs, it is, a. 2. B. Frequency non selective fading 2. Increase in probability of collision 1, 2 and 3 are correct The techniques used to improve the capacity of cellular systems are, A. Splitting Zero forcing algorithm D. All of the above b. Decreasing the strength of antenna c. Large coherence time of the channel as compared to the delay constraints Received power falls with square of the distance between the transmitter and receiver 4. Spread spectrum technology High frequency bands of speech 4. D. All of the above. Working of Adaptive Equalizers include, A. Company. D. All of the above, A. TDMA C. Cosine window 2. Gets transferred to another cell Current signal sample is independent of past samples b. FDMA cellular systems b. b. Voice channels are not permanently assigned Uses large and small cells D. Both a and b Cell size Drop in signal to noise ratio A question may or may not specify the number of choices to select. Number of operations for one iteration of algorithm Current signal sample is independent of past samples c. Increased spectral efficiency b. Type of modulation technique used c. Multiple users on multiple channels at different time slots These topics are chosen from a collection of most authoritative and best reference books on Wireless & Mobile Communications. C. 1, 2 and 4 are correct B. Why are waves with a very low frequency not used for data transmission in computer networks? D. None of the above, 37. e. Both a and c, 1. Each user has unique PN code, A. In Mobile Assisted Handoff (MAHO), the handoff takes place when, A. D. All of the above, 99. Geometry of the object D. 2 and 3 are correct, 63. Every user stays at a certain narrowband channel at a specific time period B 17. e. Both b and c, 54. These short solved questions or quizzes are provided by Gkseries. Blocking is reduced d. Multiple users with coding techniques, a. C. Full duplex mode Frequency of the incident wave, A. D. Demand access protocol, 140. b. 2, 3 and 4 are correct Half duplex systems Depends upon the distance between transmitting and receiving antenna, 71)   The free space model of propagation refers to, 1. B. Ib bits 2. 4. B. MCQ; ... with the objective to fulfill the IMT-Advanced criteria of 1000 Mbit/s for stationary reception and 100 Mbit/s for mobile reception. D. None of the above, 87. C. Low earth orbit satellites B. Type of modulation technique used d. All of the above, 34)   In a fixed channel assignment strategy, a. The Linear Equalizer may be implemented as, A. Frequency modulation 2, 3 and 4 are correct 1, 2 and 3 are correct Low efficiency due to guard intervals, 136)   The guard interval is provided in OFDM, a. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. D. SDMA cellular systems, 126. Phase These short objective type questions with answers are very important for Board exams as well as competitive exams. 25)   The interference between the neighboring base stations is avoided by, a. Assigning different group of channels Distance between the subscriber and the base station c. 2 and 4 are correct Calculations and analysis is increased d. All of the above, a. Each user is assigned unique frequency slots Changes in signal strength c. Power delay of the channel d. < 2 GHz, 10)   Half duplex system for communication has, a. Communication in single direction Impulse response is time varying d. All four are correct, 1. c. Multiplexed signals d. All of the above, 52)   Interference in frequency bands may lead to, a. c. Un availability of the channel 1.25 MHz b. Distance between the subscriber and the base station INFORMATION TECHNOLOGY QUESTIONS AND ANSWERS … PDF File: Information Technology Questions And Answers Multiple Choice – PDF-ITQAAMC-15LIOM-9 4/4. Cross talk The free space model of propagation refers to, 1. Equalizer algorithm b. Suitability for frequent handoffs C. Low pass filter c. Full duplex systems C 4. B. Directly proportional to Doppler spread c. Full duplex mode C. AT&T Bell Laboratories b. Diversity employs the decision making at, A. Transmitter Fixed assignment is possible d. High speed users with large coverage area, ANSWER: Ability of a user to access trunked system during busy hour, a. Erlangs /MHz /km2 A factor of power and gain of transmitter, 74)   Spread spectrum modulation involves, 1. b. Tracking Computer Knowledge Communications MCQ Multiple Choice Questions and Answers PDF Download for the Government Jobs, Competitive Exams and Public / Private Tests Time synchronization problems Inaccuracies in the mathematical analysis C. New channel allocation is done C. 1 and 4 are correct d. None of the above, 19)   The 2G GSM technology uses a carrier separation of, a. C. Decreasing the S/N ratio at the antenna input Capacity of the system is increased d. None of the above, 154)   The received signal from a multipath channel is expressed as, a. Convolution of transmitted signal and impulse response D. None of the above, Ans:- Multipath delay spread small scale fading, A. b. Lattice filter Different phase, 152)   The effects of small scale multipath propagation are, 1. d. 116 users, a. Sensitivity to Doppler shift D. All four are correct, 122. B. I am an M.Tech in Electronics & Telecommunication Engineering. B. Decreasing the strength of antenna Practice Multiple Choice Questions for Data Communication and Networking of computer awareness for SSC and banking exams. c. 1, 2 and 4 are correct 4. d. Frequency non selective fading, 149)   The power delay profile helps in determining, a. b. 3. Frequency domain channel sounding, Your email address will not be published. 1 and 2 are correct Properties of the material at which reflection occurs 1 and 3 are correct 2, 3 and 4 are correct B. Windowing, Pre emphasis, segmentation, filtering Flat fading or frequency nonselective fading is a type of, A. Multipath delay spread small scale fading 2, 3 and 4 are correct Interacting with People – Multiple choice Questions (with answers) 28518 – Interact with People to provide support in a health or wellbeing ... a. Fingers b. Adder 3. You will get 1 point for each correct answer. Smart antennas pointing towards mobile stations c. Quantizer Equalization based, A. Correlator, estimation of transmitted signal, demodulation, bit decision c. 2 and 3 are correct 2. 4. Frequency allotted Two base stations operating in same frequency band 2. Training d. Sub-band coding, 104)   The speech coding technique that is dependent on the prior knowledge of the signal is, a. Waveform coders d. All of the above, 48)   Trunking in a cellular network refers to, a. b. Omni directional antennas B. 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. Commonly used mode for 3G networks is, 22. A 15. b. Modulation technique B. d. Amplitude, a. B. B. Sectoring e. Both a and c, A. 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 d. All of the above, a. TDMA b. C. Spectrum To eliminate ISI d. All of the above, a. b. b. Receiver Fast fading B. When a wave falls on a perfect conductor, A. Minimization of weighted mean square error Use of same frequency channel for same time slot d. All of the above, 14)   IMT-2000 is a digital mobile system that functions as, a. Pager The effects of small scale multipath propagation are, 1. At ElectronicsPost.com I pursue my love for teaching. C. Mobility In Network Frequency planning is not required Resistance to multi path fading Spectrum unavailability Reflection B. Tracking 3. D. All of the above, 46. b. Vocoders e. Both a and c, A. Transversal filter D. David Bohm, 3. Fundamentals of mobile communication - 1 - MCQs with answers 3G Cellular Networks Q1. b. rms delay spread 2. 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. Read More. d. Both a and b When mobile station moves between two cellular systems D. Hamming window, 113. Properties of the material at which reflection occurs The bandwidth of modulated signal 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 11 1 and 2 are correct b. Demand assignment is possible d. None of the above, a. INFORMATION TECHNOLOGY QUESTIONS AND ANSWERS MULTIPLE CHOICE … Multiple Choice Pdf. Interference in frequency bands may lead to, A. 3G W-CDMA is also known as a. UMTS b. DECT c. DCS-1800 d. ETACS B. B. Equalizer Increased capacity Fresnel Reflection Coefficient is a factor of, 1. d. None of the above, 102)   Advantage of using waveform coders is, 1. B. 4. D. None of the above, A. B. 4G Multiple Choice questions and answers pdf free download for freshers experienced 4G faqs,Objective certification,Interview questions. B. Using transmitters with different power level C. Frequency selective fading d. None of the above, ANSWER: Communication in single direction at a time, a. The science of communication and control is known as _____. 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 Each user is assigned unique frequency slots Addition of transmitted signal and impulse response c. All the three are correct 1.25 MHz C. The call gets blocked if all the channels of the cell are occupied Frequency diversity D. Channel allocation for transmission, 100. b. Spectrum Efficiency of a cellular network is, A. d. All of the above, a. Sectored directional antennas C. Estimation of transmitted signal, demodulation, correlator, bit decision C. Quantizer It rejects narrow band interference While handoffs, the termination of call may be avoided by, A. C. Excess delay spread b. D. All of the above, 32. Better transmission quality B. Diffraction, at high frequencies, depends upon, 1. 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 Speech Coders are categorized on the basis of, A. Send alphanumeric messages Digital European Cellular Telex Multiple choice and open answer questions Try the multiple choice questions below to test your knowledge of this chapter. d. All of the above, a. Transmitter 2 and 4 are correct d. Both a and b 2. Free download in PDF Mobile Communication Multiple Choice Questions and Answers for competitive exams. B. Fewer number of cells are required b. Sectoring b. c. Mobility In Network Less complexity d. Hamming window, 113)   The received signal at the GSM speech decoder is passed through, a. STP filter Increased immunity to jamming The received signal from a multipath channel is expressed as, A. Convolution of transmitted signal and impulse response d. Qualcomm, ANSWER: Nippon Telephone and Telegraph (NTT), a. Simplex systems b. These are time domain vocoders c. 2 and 3 are correct It uses the maximum area for coverage If coherence time of the channel is smaller than the symbol period of the transmitted signal, it is, A. a. Different amplitudes Polarization of the wave 4. d. All four are correct, 121)   The advantages of FDMA over TDMA includes, 1. C. Small coherence time of the channel as compared to the delay constraints B. 4. C. Is used for high speed users with large coverage area and low speed users with small coverage area b. D. Both a and b A. IEEE 802.11 B. Signal compression techniques And, if you really want to know more about me, please visit my "About" Page. Your email address will not be published. e. Both a and b, A. Accommodating large number of users in limited spectrum d. Communication channel, 1. b. Required fields are marked *. D. Each signal is modulated with frequency modulation technique, Ans:- Different users in different time slots, 123. B. 3. B. Waveform coders b. 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. PN sequence for modulation D. Both a and b d. Both a and c Sampling, Envelope detection, encoding, multiplexing C. Digital European Cordless Telephone Linear predictive coders are based on the principle that, 1. Different spectrum allocation in different time slots, A. B. Modulation technique Distance between the transmitter and receiver, A. B. Termination of a call 4. D. Both a and b are correct 2. C. Both a & b Transfers the call C. λ/ sec B. Faster handoffs e. Both a and b, 151)   Small scale multipath propagation is caused due to waves with, 1. 3. Each cell is assigned a predetermined set of frequencies 3. D. All of the above, A. TDMA/FDD A single, overall cost of capital is often used to evaluate projects because: a. 35)   In a dynamic channel assignment strategy, a. Multiple carrier frequencies It is vulnerable to timing problems, a. Easier handoff c. 2 and 3 are correct d. All are correct, a. 2. D. Sampling, Envelope detection, multiplexing, encoding, Ans:- Envelope detection, sampling, encoding, multiplexing, 106. d. The spectrum acquired by the noise between the signal, ANSWER: The small unused bandwidth between the frequency channels to avoid interference, 1. c. Range of noise Its ability to frequency reuse, a. C. Both a & b 3. C. 1 and 4 are correct e. Both b and c, a. Increase in Co- channel reuse ratio indicates, A. c. Decreasing the S/N ratio at the antenna input Amplitude of the incident wave Coherence Bandwidth of the channel is less than bandwidth of transmitted channel e. Both a and c, 115. 2. D. The spectrum acquired by the noise between the signal, Ans:- The small unused bandwidth between the frequency channels to avoid interference, 1. Cheaper filters with less complicated logic functions 64 users Signal compression techniques TELECOM MCQS … The speech coding technique that is dependent on the prior knowledge of the signal is, A. Waveform coders d. Frequency selective fading, 146)   Flat fading or frequency nonselective fading is a type of, a. Multipath delay spread small scale fading 1 and 2 are correct Fading due to large obstructions b. Multiple users at same frequency, 135. Training 1 and 3 are correct The serving base station requests for a channel from MSC b. c. Both a & b Different propagation delays 1, 2 and 3 are correct B. D. Receivers of mobile stations, A. A 18. Free download in PDF Mobile Communication Multiple Choice Questions with Answers for competitive exams. Limited internet browsing D. 300 KHz, 21. D. Both a and c, Ans:- All incident energy is reflected back without loss of energy, A. C. 32 users D. All are correct, 61. C. Regular C 3. Multi channel per carrier b. c. Both a & b 1, 3 and 4 are correct b. CDMA/FDD c. Maximum Likelihood Sequence Estimation, a. c. When mobile station receives more power from other base station than the serving base station C. Same spectrum may be allocated to other network The access to the system is denied More storage required B. B. Large bandwidth When mobile station moves in two cellular systems with different MSC 4. Gets blocked You can answer the quiz questions by clicking on the "radio" buttons. 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