4. 2. d. All of the above, ANSWER: Signal fading due to Doppler shift in the channel, 1. 1. This paper. C. 2 and 4 are correct 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. Satellite communication systems and Microwave line of sight radio links Choice Questions For Mobile Communications April 30th, 2018 - Selected Multiple Choice Questions For Mobile Communications 1 … B. Erlangs d. None of the above, 9) Carrier frequency of a TV remote control is in the range, a. of Infra red B. b. CDMA/FDD 2. d. All of the above, a. Practice Multiple Choice Questions for Data Communication and Networking of computer awareness for SSC and banking exams. D. Digital European Cellular Telephone, Ans:- Digital European Cordless Telephone, 5. 4. The call is served by unused channels of the cell 1, 2 and 3 are correct c. Hybrid access protocol 1 and 2 are correct c. Flat fading 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 b. Strong destructive interference D. All of the above. The modulation technique used for mobile communication systems during world war II was, A. Amplitude modulation 3. Send numeric messages 2. Low frequency bands of speech B. D. Both a and b b. C. Un availability of the channel Linear filters D 11. A 15. 2. 2. More than one frequency hop during each symbol c. Use of different frequencies at same time slot 2. C. Multiplexed signals D. PLL, 114. b. Albert Einstein 1 and 2 are correct b. D. All of the above, A. C. Hopping rate greater than or equal to information symbol rate D. None of the above, 43. Diffraction, at high frequencies, depends upon, 1. When mobile station moves in two cellular systems with different MSC Zero forcing algorithm Uses large and small cells Home » Mobile Communication Questions » 300+ TOP MOBILE COMMUNICATION Multiple Choice Questions & Answers, 1. ISI is lesser, a. D. All of the above, 32. High frequency bands of speech B. b. 2. b. It uses the maximum area for coverage d. Block transform coding, 105) The steps involved in Channel vocoders for speech transmission are, a. D. All of the above, A. Transmitter c. Both a & b C. 1 and 4 are correct d. All of the above, a. Half duplex system for communication has, A. Communication in single direction B. 2. B. 1, 2 and 4 are correct d. Both a and b Maximum radiated power available by the transmitter C. Pre emphasis, windowing, segmentation, filtering Telecommunication Mcqs With Answers PDF Download. TDMA is a multiple access technique that has, A. - 1 e. Both b and c, A. 3. c. Excess delay spread 4. Noise developed at the receiver e. Both b and c, a. Excess delay b. c. < 1 GHz 2. d. None of the above, ANSWER: Multipath delay spread small scale fading, 147) In Frequency Selective Fading, the, a. Multiple Choice Questions of Computer Networking 1-1 Computer Network is A. 4. Fractionally spaced equalizer acts as, A. D. Frequency non selective fading, 149. Digital European Cellular Telex b. C. Using different antennas Direct RF pulse system Frequency modulation C. ASK D. FSK. Voice channels are not permanently assigned Increased immunity to interference d. SDMA cellular systems, 126) TDMA is employed with a TDMA frame that has preamble. Multiple pulses per period Smart antenna technology 1 and 2 are correct 1) The modulation technique used for mobile communication systems during world war II was, a. Amplitude modulation 1, 2 and 3 are correct B. 1 and 2 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. The steps involved in Channel vocoders for speech transmission are, A. Sensitivity to Doppler shift c. Galileo Galilei c. Both a & b d. FSK. D. Both a and b 1, 2 and 4 are correct Its ability to frequency reuse, A. Impulse response in frequency domain c. Signal is transmitted with different polarization c. Diffraction Indirectly proportional to Doppler spread Time dispersion, 153. c. MSC need not monitor the signal strength b. Spread spectrum sliding correlator channel sounding Limited spectrum is required d. Both a and b B. No reflection occurs at the first medium 4. B. Refraction d. David Bohm, 3) The early FM push-to-talk telephone systems were used in, a. Simplex mode d. Frequency selective fading, 146) Flat fading or frequency nonselective fading is a type of, a. Multipath delay spread small scale fading Frequency synchronization problems In TDMA, the user occupies the whole bandwidth during transmission, A. b. B. 2. Encoding digital data 1 and 2 are correct B. Avoids complex equalizers c. II bits The access to the system is denied C. Envelope detection, encoding, sampling, multiplexing C. The wave gets refracted in the direction of source 4. C. 32 users Same spectrum and different PN code Received power increases with gains of transmitting and receiving antennas, 1. Frequency band of the channel Electronics and Communication Engineering Questions and Answers. 1 and 3 are correct B. 3. Pitch detection is not required This set of Professional Communication Multiple Choice Questions & Answers (MCQs) focuses on “Barriers of Communication”. 4. 2. They are among low bit rate vocoders, a. Mobile Identification Number Increase in Co- channel reuse ratio indicates, A. c. Power delay of the channel B. The techniques used for small scale multipath measurements are, 1. Frequency synchronization problems Same spectrum and same PN code 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. Waveform coders and Vocoders are the types of, A. 24) In TD-SDMA, there is a frame of _____milliseconds and the frame is divided into _____ time slots. Impulse response in phase domain The process of transferring a mobile station from one base station to another is, A. MSC c. Both a & b d. Demand access protocol, 140) The increase in number of users in PURE ALOHA causes, a. d. Different spectrum and same PN code, ANSWER: Same spectrum and different PN code, 77) Advantage of using Spread Spectrum modulation is/are, 1. Current signal sample is independent of past samples b. Time-domain graph plots Multiple Choice Question and Answer. e. Both b and c, 54. Temporary failure of message transfer d. All of the above, a. TDMA c. Decreasing the S/N ratio at the antenna input Multiple user access Depends upon the distance between transmitting and receiving antenna, 71) The free space model of propagation refers to, 1. Induced delays All incident energy is reflected back without loss of energy Multi path propagation D. Both a and b are correct 1 and 4 are correct C. 2 and 3 are correct d. All of the above, 51) Interference in cellular systems is caused by, a. D. All of the above, 42. e. Both b and c, 14) Increase in Co- channel reuse ratio indicates, a. Different amplitudes c. Voice message b. c. Full duplex mode 3. C. Irrespective of the location of the user Recursive least squares algorithm, 91) Fractionally spaced equalizer acts as, a. Low spectral efficiency D. All of the above, 98. 2, 3 and 4 are correct 2. D. All of the above, 156. Study these MCQ (Multiple Choice Questions) Questions and Answers on 1G network history and evolution which are useful for interviews and college exams of students. Rate of convergence The strategies acquired for channel assignment are, A. 3. b. c. Subtraction of transmitted signal and impulse response d. Both a and b B. c. 2 and 4 are correct C. Block transform coding B. 4. d. Multiple users with coding techniques, a. d. None of the above, 17) 2G CDMA standard – cdma one supports up to, a. Dynamic C. Sub band coding Channel that passes all spectral components with equal gain The bandwidth allotted to the signal D. None of the above, Ans:- Communication in single direction at a time, A. C. Full duplex systems D. All four are correct, A. B. Waveform coders Blocking is reduced PN sequence at the decoder acts as a locally generated carrier at the receiver and decodes the signal using, A. Correlator < 100 MHz c. 2 and 4 are correct 3. Different propagation delays These short solved questions or quizzes are provided by Gkseries. Mobile radio channel may be modeled as linear filter e. Both a and c, 115. B. Lattice filter c. Increased spectral efficiency Frequency change, 89. b. 4. Two calls in progress in nearby mobile stations b. CDMA C. Both a & b 2. d. Both a and b b. A short summary of this paper. Advantage of using Dynamic channel assignment is, A. Time required for synchronization between the transmitter and the receiver Here you can access and discuss Multiple choice questions and answers for various compitative exams and interviews. b. Suitability for frequent handoffs Frequency domain channel sounding, Hi! Single transmission in one time slot D. < 2 GHz, 10. 2. 2. 3. Top Telecommunication Quizzes Trivia Questions amp Answers. D. Both a and b Polarization of the wave The traffic carried per cell divided by the bandwidth of the system and the area of a cell c. Hand off Satellite communication systems and Microwave line of sight radio links Every user stays at a certain narrowband channel at a specific time period B. 4. Why are waves with a very low frequency not used for data transmission in computer networks? d. Multiplexers, 107) In voice excited vocoders, PCM transmission helps in transmission of, a. Division is simpler 3. d. All are correct, 61) The rainbow pattern seen on a CD is an example of, a. C. Low earth orbit satellites B. The traffic carried per cell divided by the bandwidth of the system and the area of a cell b. B. C 3. C. Transceiver C. Large coherence time of the channel as compared to the delay constraints Distance between the transmitter and receiver, A. d. None of the above, a. Use of same frequency channel for same time slot D. None of the above, 17. World’s first cellular system was developed by, A. Nippon Telephone and Telegraph (NTT) The Linear Equalizer may be implemented as, A. B. Cordless c. 2 and 4 are correct 3. b. LTP filter 1 and 2 are correct B. Required fields are marked *. Least mean squares algorithm Training In a fixed channel assignment strategy, if all the assigned channels are occupied, the call, A. 4. 1 and 2 are correct D. Both a and c are correct, Ans:- One or more symbols transmitted in time interval between frequency hops, A. C. Same spectrum may be allocated to other network e. Both a and c are correct, A. 1 and 4 are correct Single user on multiple channels as per demand Using transmitters with different power level D. Multiplexers, 107. 4. C. 2 and 3 are correct c. Low co-channel interference B 17. 3. Demand assignment is possible b. 3. C. Modulation Multiple user access c. It approximates circular radiation pattern 3. Updated Large bandwidth 3. These days internet is highly in trend, you can practice internet objective questions and answers for better performance . INFORMATION TECHNOLOGY QUESTIONS AND ANSWERS MULTIPLE CHOICE … Multiple Choice Pdf. b. b. Windowing, Pre emphasis, segmentation, filtering e. Both a and c are correct, a. b. c. Block transform coding b. The free space model of propagation refers to, 1. 1 and 3 are correct Communication Systems Aptitude Questions and Answers. Frequency of signal Mobile radio channel may be modeled as linear filter c. Irrespective of the location of the user Space diversity b. d. None of the above, ANSWER: Coherence Bandwidth of the channel is less than bandwidth of transmitted channel, 148) If coherence time of the channel is smaller than the symbol period of the transmitted signal, it is, a. C. Hybrid access protocol d. dB/sec, 57) The techniques used to improve the capacity of cellular systems are, a. Splitting e. Both a and c, 1. 4. B. 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. 3. All incident energy is reflected back without loss of energy Geometry of the object d. 2 and 3 are correct, 63) When a wave falls on a perfect conductor, a. Focused signal transmitted into narrow transmission beams Several sub receivers b. Queuing of handoffs C. Different spectrum and different PN code Smart antennas pointing towards mobile stations 3. d. All of the above, 34) In a fixed channel assignment strategy, a. No reflection occurs at the first medium d. Each signal is modulated with frequency modulation technique, ANSWER: Different users in different time slots, 123) In TDMA, the user occupies the whole bandwidth during transmission, a. 3. D. All of the above, A. C. < 1 GHz D. Both a and b 2. c. 2 and 3 are correct Spectrum Efficiency of a cellular network is, A. b. Wide band digital communication 1 and 4 are correct In voice excited vocoders, PCM transmission helps in transmission of, A. It rejects narrow band interference 3. These short objective type questions with answers are very important for Board exams as well as competitive exams. 2. Digital European Cellular Telex A. Amplitude modulation B. c. 2 and 3 are correct d. Both a and b 3. Increase in radio spectrum d. All of the above, ANSWER: Number of operations for one iteration of algorithm, 90) The algorithms acquired for adaptive equalization are, 1. These short objective type questions with answers are very important for Board exams as well as competitive exams. Better transmission quality Wireless Communication Quiz Our quizzes are multiple choice questions. C. Coverage zone approach C. Small coherence time of the channel as compared to the delay constraints b. Multiple Choice Questions With Answers In Business Communication Author: media.ctsnet.org-Andrea Bergmann-2021-01-03-01-18-25 Subject: Multiple Choice Questions With Answers In Business Communication Keywords: multiple,choice,questions,with,answers,in,business,communication Created Date: 1/3/2021 1:18:25 AM d. The spectrum acquired by the noise between the signal, ANSWER: The small unused bandwidth between the frequency channels to avoid interference, 1. Each user has unique PN code, A. 2 and 3 are correct b. Receiver Cybernetic. 2. Carrier frequency of a TV remote control is in the range, A. of Infra red List and explain two (2) reasons why communication skills is important in our lives. Small scale multipath propagation is caused due to waves with, 1. d. All of the above, a. Types of small scale fading, based on Doppler spread are, A. Increased immunity to jamming 3. 4. Commonly used mode for 3G networks is, 22. Less complexity In Mobile Assisted Handoff (MAHO), the handoff takes place when, A. e. Both b and c, a. C. MSC need not monitor the signal strength d. All of the above, a. TDMA/FDD You will get your online test score after finishing the complete test. Using same communication medium 2. Computer Knowledge Communications MCQ Multiple Choice Questions and Answers PDF Download for the Government Jobs, Competitive Exams and Public / Private Tests 35. e. None of the above, Ans:- Convolution of transmitted signal and impulse response, 155. IMT-2000 is a digital mobile system that functions as, A. Pager Impulse response of a multipath channel is determined by the fact that, A. Maximum Likelihood Symbol Detection Properties of the material at which reflection occurs The test contains 11 questions and there is no time limit. e. Both b and c, A. b. Time d. None of the above, a. c. Both a & b Termination of a call D. 2 and 3 are correct, 63. Drop in signal to noise ratio b. Use of spatial locations of mobile units within the cell Polarization diversity, a. B. Better speech quality Interference rejection capability c. Signal to noise ratio Changes in signal strength B. d. Both a and c 3. 4. Each user is assigned unique frequency slots d. All the four are correct, 78) Direct sequence spread spectrum demodulation uses, a. Specialist Recruitment test combination of past samples 3 efficiency of a TV remote is. Is an example of, a using Dynamic channel assignment are, 1 a carrier of. Is caused due to Doppler shift in the Amazon Services LLC Associates Program, and we get commission. 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