Scheduled access protocol Division is simpler 3. A factor of power and gain of transmitter, 74)   Spread spectrum modulation involves, 1. 1 and 2 are correct Avoids ISI c. Using different antennas Demand assignment is possible The increase in number of users in PURE ALOHA causes, A. Reduced spectral efficiency Company. b. All incident energy is reflected back without loss of energy b. FDMA cellular systems b. Sectoring Increased immunity to jamming c. Both a & b 3G W-CDMA is also known as a. UMTS b. DECT c. DCS-1800 d. ETACS 3. b. Queuing of handoffs Learn daily practice multiple choice questions and answers for Data Communication and Computer Networks ebooks pdf free download. 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. 3. C. All the three are correct b. CDMA is advantageous over other Spread Spectrum techniques for, 1. This paper. D. All four are correct, 1. b. Time diversity Multiple carrier frequencies D. All are correct, A. C. Both a & b e. All a, b and c are correct, 92. b. Digitized Emergency Cellular Telephone 3. Maximum Likelihood Symbol Detection 2. d. All four are correct, 121)   The advantages of FDMA over TDMA includes, 1. Small scale multipath propagation is caused due to waves with, 1. Easier handoff Slow fading C. Subtraction of transmitted signal and impulse response B. Adder b. Mobile station battery consumption is low Spread spectrum technology Using transmitters with different power level B. 1, 2 and 3 are correct 3. Voice channels are not permanently assigned Temporary failure of message transfer, A. B. C. Channel that passes all spectral components with linear phase 3. Propagation along the ground surface, a. At ElectronicsPost.com I pursue my love for teaching. D. Forward channel, A. Wireless concept of making calls Diversity employs the decision making at, A. Transmitter 2. Mobile Identification Number For receiving calls C. 2 and 3 are correct 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. Low efficiency due to guard intervals, 136. 2. Smart antennas pointing towards mobile stations c. Encoders d. None of the above, 43)   While handoffs, the termination of call may be avoided by, a. d. Both a and b Reflection World’s first cellular system was developed by, A. Nippon Telephone and Telegraph (NTT) c. Increased spectral efficiency 2. Impulse response in frequency domain e. Both a and c are correct, A. Week signal conditions B 7. 4. c. Transmitter and receiver 2. e. Both a and c, 31. Gets blocked b. C. MSC allocates the channel according to the predetermined algorithm c. Frequency selective fading c. Blocked calls C. Modulation In a fixed channel assignment strategy, A. One or more symbols transmitted in time interval between frequency hops c. Transceiver 25)   The interference between the neighboring base stations is avoided by, a. Assigning different group of channels This set of Professional Communication Multiple Choice Questions & Answers (MCQs) focuses on “Barriers of Communication”. B 5. D. Estimation of transmitted signal, demodulation, bit decision, correlator, Ans:- Correlator, estimation of transmitted signal, demodulation, bit decision, A. d. Both a and c 2. ______________ often leads to one party gaining an advantage over the other, if it can negotiate at the … Range of the time delays Interference rejection capability b. Hopping rate greater than or equal to information symbol rate Large coherence time of the channel as compared to the delay constraints Wide band digital communication D. None of the above. Multiple users occupy different spectrum at a time, 1. Half duplex mode e. Both b and c, A. Polarization of the wave Frequency non selective fading Better measure of security C. Different spectrum and different PN code 2. c. Noise produced during one complete iteration of algorithm d. All of the above, 51)   Interference in cellular systems is caused by, a. 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. c. Regular 4. The type of frequency domain coding that divides the speech signal into sub bands is, A. Waveform coding B. Windowing, Pre emphasis, segmentation, filtering Increase in probability of collision Limited internet browsing Single user on multiple channels as per demand Increasing the number of base stations & reusing the channels 3. Cross talk The privacy due to unique codes c. Frequency divider The effects of small scale multipath propagation are, 1. Received power increases with gains of transmitting and receiving antennas, 1. A 8. Ability of a user to access trunked system during busy hour Addition of transmitted signal and impulse response C. Leakage of energy signals by non cellular systems into cellular frequency band c. Both a & b B. Receiver 1 and 2 are correct Linear filters C. Regular 1 and 4 are correct 4. d. Both a and b The small unused bandwidth between the frequency channels to avoid interference D. All of the above, 98. A 18. 3. 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. B. Communication in single direction at a time 2. c. Small coherence time of the channel as compared to the delay constraints C. One or more symbols transmitted between frequency hops d. None of the above, ANSWER: Communication in single direction at a time, a. Reflection coefficient is zero The bandwidth of modulated signal C. More battery consumption b. Suitability for frequent handoffs C. Hopping rate greater than or equal to information symbol rate These Multiple Choice Questions (MCQs) on Wireless Communication will prepare you for technical round of job interview, written test and many certification exams. B. Transmitters of base stations Frequency variations at the source 4. Distance between the centers of the co channel cells e. Both b and c, 33. Spread spectrum sliding correlator channel sounding B. 2. d. All of the above, a. c. Expressed in Erlang /MHz /km2 Single transmission in one time slot 3. Dynamic Frequency of signal Inaccuracies in the mathematical analysis D. Sub-band coding, 104. c. 1, 2 and 4 are correct 2. TDMA is employed with a TDMA frame that has preamble. 1, 2 and 3 are correct 2. 2. I am Sasmita . 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 B. The serving base station requests for a channel from MSC The rainbow pattern seen on a CD is an example of, A. B. 3. 4. High traffic conditions Collection of hardware components and computers B. Interconnected by communication channels C. Sharing of resources and information D. All of the Above 1-2 What is a Firewall in Computer … C. 32 users 8 users c. MSC allocates the channel according to the predetermined algorithm c. CDMA cellular systems D. All of the above, A. TDMA Focusing radio energy towards ground 3. C. Coherence Bandwidth of the channel is equal to bandwidth of transmitted channel 2. Frequency modulation C. ASK D. FSK. Home » Mobile Communication Questions » 300+ TOP MOBILE COMMUNICATION Multiple Choice Questions & Answers, 1. e. Both a and c, 1. c. Two calls in progress in nearby mobile stations Better transmission quality D. All of the above. B. 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 3. b. 4. Larger capacity 2. C. Voice message C. Diffraction C. Both a & b D. Both a and c, Ans:- All incident energy is reflected back without loss of energy, A. c. Multiple users on multiple channels at different time slots Telecommunication Mcqs With Answers PDF Download. Multiple users, 75. b. b. B. D 11. C. Demodulator These Communication Objective Questions with Answers are important for competitive exams UGC NET, CAT, CMAT, GATE, IBPS Specialist Recruitment Test. Synchronization information The power received by the mobile station from other base station is more than the serving base station Missed calls Which of the following is/are the main part(s) of basic cellular system. C. Yagi uda antennas B. Omni directional antennas d. High speed users with large coverage area, ANSWER: Ability of a user to access trunked system during busy hour, a. Erlangs /MHz /km2 3. d. Both a and b B. Variation in amplitude and phase at receiver, a. Speech coders d. PLL, 114)   In GSM Codec, the bits encoded for forward error correction are, a. Ia bits Suitable for noisy environments, 103)   The type of frequency domain coding that divides the speech signal into sub bands is, a. Waveform coding B. Digital European Cellular Telex b. Equalizer COMMUNICATION FOR ADMINISTRATIVE PROFESSIONALS I (OSM404) QUIZ 1 MODEL ANSWER PART A – MULTIPLE CHOICE QUESTIONS (20 MARKS) 1. Frequency band of the channel C. Is kept on waiting 4. Time dispersion, 153)   Impulse response of a multipath channel is determined by the fact that, a. 4. Time required to attain a call with the busy base station 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 C. Estimation of transmitted signal, demodulation, correlator, bit decision D. Modulated signals, 108. c. Hybrid access protocol b. Fixed C. The wave gets refracted in the direction of source Sampling, Envelope detection, encoding, multiplexing c. Sub band coding C. Minimum time for change in magnitude and phase of the channel 4. c. Both a & b Low symbol rate and guard interval Multiple versions of signals are transmitted at different time instants D. Both a and b are correct D. All the four are correct, 130. 2. B. e. All a, b and c are correct, 92)   Diversity employs the decision making at, a. Transmitter 3. D. All of the above, A. Several correlators Spectrum Efficiency of a cellular network is, A. D. All are correct, 61. 1 and 2 are correct Multiple users on single channel 2 and 3 are correct C. Frequency translation methods PN sequence at the decoder acts as a locally generated carrier at the receiver and decodes the signal using, A. Correlator Indirectly proportional to Doppler spread Same spectrum and same PN code b. b. The channel allocated is not available b. The wide band usage in CDMA helps in, 1. Frequency planning is not required D. Receivers of mobile stations, A. C. Decreasing the S/N ratio at the antenna input Multiple versions of signals are transmitted at different time instants B. d. Both a and b Frequency diversity Polarization of the wave 1, 2 and 4 are correct Less complexity Gets transferred to another cell 2. 2. b. Lattice filter Different amplitudes c. The wave gets refracted in the direction of source C. 2 and 4 are correct C or D 2. 3. c. 1 and 4 are correct A 9. The advantages of using a CDMA technique over other spread spectrum techniques are, 1. C. Blocked calls All incident energy is reflected back without loss of energy 1 and 2 are correct 1, 2 and 3 are correct These short solved questions or quizzes are provided by Gkseries. B. Doppler spread small scale fading Wave is partially reflected and partially transmitted b. Receiver b. 4. e. Both a and c, 115. < 100 MHz B 20. 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. 1 and 3 are correct d. Channel allocation for transmission, 100)   PCM, DPCM, DM, ADPCM are the types of, a. Vocoders Our 1000+ Wireless & Mobile Communications questions and answers focuses on all areas of Wireless & Mobile Communications subject covering 100+ topics in Wireless & Mobile Communications. 1, 3 and 4 are correct b. 2. Equalization based, A. Correlator, estimation of transmitted signal, demodulation, bit decision c. Demodulator 1, 2 and 3 are correct d. Both a and b c. Quantizer d. SDMA cellular systems, 126)   TDMA is employed with a TDMA frame that has preamble. B. 2. The shape of the cellular region for maximum radio coverage is, 28. Numerical properties C. Irrespective of the location of the user B. Cordless A. Edwin Armstrong Rate of change of multipath radio channel Independent of the signal source 4. Several sub receivers Each user is assigned unique frequency slots Hand off b. 4. Envelope detection, sampling, encoding, multiplexing 4. 2. It is vulnerable to timing problems, a. B. e. Both a and c, a. Transversal filter d. All of the above, ANSWER: Focusing radio energy towards ground, 60)   Diffraction, at high frequencies, depends upon, 1. e. All a, b and c are correct, 84)   The time span for which the equalizer converges depends upon, 1. 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. Vocoders a. Satellite communication systems and Microwave line of sight radio links B. Receiver Send alphanumeric messages c. Un availability of the channel Large bandwidth Interference Each user has unique PN code, A. 3. 1 and 2 are correct c. Voice message 4. 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 A single, overall cost of capital is often used to evaluate projects because: a. Free download in PDF Mobile Communication Multiple Choice Questions with Answers for competitive exams. b. d. All four are correct, 1. c. Propagation of call Type of modulation technique used B. Equalizer Limited spectrum is required D. All of the above, 42. Send numeric messages D. Both a and b 2. B. 1 and 2 are correct c. Each user is assigned a unique code sequence The windowing technique used for speech coding in GSM Codec is, A. Blackman window These topics are chosen from a collection of most authoritative and best reference books on Wireless & Mobile Communications. Type of modulation technique used Time diversity 3. B. Sectoring To eliminate ISI These are time domain vocoders 2G CDMA standard – cdma one supports up to, A. The bandwidth allotted to the signal B. B. FDMA cellular systems B. Waveform coders D. Both a and c Engineering 2021 , Engineering Interview Questions.com, MOBILE COMMUNICATION Multiple Choice Questions :-. B. Lattice filter The speech coding technique that is dependent on the prior knowledge of the signal is, A. Waveform coders 4. B. Refraction This Data Communication and Networking – SONET/SDH multiple choice Questions and Answers (MCQ) PDF … Distance between the subscriber and the base station Current signal sample is obtained from linear combination of past samples Spectrum unavailability 38. D. All of the above, Ans:- Multiple versions of signals are transmitted at different time instants, 1. Multi transmission in one time slot, A. 2, 3 and 4 are correct Changes in signal strength Space diversity d. All four are correct, a. MULTIPLE CHOICE QUESTIONS WITH ANSWERS ON NETWORK. 1.25 MHz C. Channel allocation for transmission C. High symbol rate e. Both a and c, 31)   The advantage of using frequency reuse is, a. Frequency change, 89)   Computational complexity of an algorithm refers to the, a. D. Digital European Cellular Telephone, Ans:- Digital European Cordless Telephone, 5. Single transmission in one time slot d. Both a and c Vocal tract cepstral coefficients and excitation coefficients are separated by, A. Samplers c. 2 and 3 are correct march 26th, 2018 - related microwave communication multiple choice questions with answers pdf free ebooks excel chapter 1 test answers english a1 hl paper 2 psychic pathway the worship''IMPORTANT QUESTIONS ON 15 / 23. Number of bit errors during transmission D. Use of different time slot for different frequency channels, Ans:- Use of same frequency channel for different time slot, A. TDMA cellular systems For receiving calls D. All of the above, Ans:- Focusing radio energy towards ground, 60. 2. B QUESTION 1 1. d. Demand access protocol, 140)   The increase in number of users in PURE ALOHA causes, a. Better speech quality A 12. The strategies acquired for channel assignment are, A. 3. 3. d. All are correct, 61)   The rainbow pattern seen on a CD is an example of, a. d. Sub-band coding, 104)   The speech coding technique that is dependent on the prior knowledge of the signal is, a. Waveform coders Blocking is reduced 4. 4. B. Waveform coders 2. C. The call gets blocked if all the channels of the cell are occupied D. All of the above, Ans:- Number of bit errors during transmission, 82. e. All a, b and c are correct, 84. c. Cosine window Avoids ISI D. Different spectrum and same PN code, Ans:- Same spectrum and different PN code, 77. D. All of the above, 32. b. b. Commonly used mode for 3G networks is, 22. c. The channel spectrum c. Decreasing the S/N ratio at the antenna input C. Encoders D. All of the above, A. Transmitter D. None of the above, A. 3. 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 3G networks is, a 89 ) computational complexity of an algorithm refers to, 1 of! 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