Mobile Communication Question & AnswersJune 5, 2021 By WatElectronics This article lists 100+ Mobile Communication MCQs for engineering students. All the Mobile Communication Questions & Answers given below include a hint and wherever possible link to the relevant topic. This is helpful for the users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on the Mobile Communication topic.Mobile communication is a technology that allows multiple users anywhere on geolocation to communicate wirelessly using a device like mobile phones or cord phones. This technology is also called a mobile cellular network. For mobile communication, to begin it require 2 people with a mobile phone to communicate wirelessly, where one person acts as a transmitter who dials the call number to a specific receiver, and the other acts as a receiver who receives the call from the sender to communicate.Modification in mobile features is responsible for the evolution of mobile communication generation such as 1G, 2G, 3G, 4G, and 5G technologies which are further integrated using GSM, GPRS technologies. Mobile communication provides features such as high load balancing capacity, scales over a wide area, and good network management systems. The advantage of using mobile communication is location independent, wireless communication operates at higher speed, easily accessible, and provides a connection. 1). Mobile communication network is also called as ______ network.Cellular networkMobile network2G networkBoth a and bHintMobile communication network is also called a mobile network or cellular network. 2). _______ technology is used for communicating over large distances wirelessly.Mobile communicationLand communicationCommunicationAll the aboveHintMobile communication type technology is used for communicating over large distances wirelessly. 3). Which of the following are not used in mobile communication?WiresCablesWired antennaAll the aboveHintThe components that are not used in mobile communication are wires, wired antennas, and cables. 4). ______ technology has grouped different mobile telephony and data type technologies to over 3G.3.2G3.5G3.6G4GHint3.5 G technology has grouped different mobile telephony and data type technologies to over 3G. 5). A mobile phone uses ______ type of duplex communication.HalfFullZeroBoth a and bHintA mobile phone uses a full type of duplex communication. 6). A full-duplex communication is _______ way communication.SingleTwoMultipleAll the aboveHintFull-duplex communication is 2-way communication. 7). Which of the following are the features of mobile communication?High load balancing capacityHighly scalableGood network management systemAll the aboveHintThe features of mobile communication are high load balancing capacity, good network management system, and are highly scalable 8). Which of the following are the examples of mobile communication systems?Cellular phonesCordless phonesWired phonesBoth a and bHintEexamples of a mobile communication system are cellular phones and Cordless phones. 9). Which of the following are the facilities of mobile communications?Mobile 2way radioMobile telephonePublic land radioAmateur radioAll the aboveHintThe facilities of mobile communications are Mobile 2way radio, Mobile telephone, Public land radio and Amateur radio. 10). Mobile 2-way radio is ________ communication systems.One to manyTwo-wayFull duplexSimplexHintMobile 2-way radio is a one-to-many communication system. 11). Mobile 2-way radio operates in _______ mode.Half-duplexFull duplexMulti duplexNone of the aboveHintMobile 2-way radio operates in half-duplex type mode. 12). Citizen band radio operates at _______ frequency.26 to27.1 MHz1.8 MHZ2MHHz3.5 MHzHintCitizen band radio operates at 26 to 27.1 MHz frequency. 13). Citizen band radio communication use ______ type of modulation.AMFMPMAll the aboveHintCitizen band radio communication use AM type of modulation. Read more about Amplitude Modulation. 14). Citizen band radio at 10KHz has _______ number of channels.20304050HintCitizen band radio at 10KHz has 40 channels. 15). Mobile 2-way radio uses _______ types of service.CommercialNon-commercialPaidAll the aboveHintMobile 2-way radio uses Non-commercial types of service. 16). Which of the following is a mobile 2-way radio non-commercial type of service?Press to talkSwitch to talkHold to talkNone of the aboveHintA mobile 2-way radio non-commercial type of service is switch to talk. 17). A mobile 2-way radio non-commercial types of service uses ______ modulation.Double sideband suppressed carrierSingle sideband suppressed carrierSideband carrierAll the aboveHintA mobile 2-way radio non-commercial type of service use modulation such as double sideband suppressed carrier and single sideband suppressed carrier. 18). Public land radio is a _________ system.One to manyTwo way FM radioFull duplex FM radioSimplexHintPublic land radio is a two-way FM-type radio system. 19). Which of the following is the application of Public land radio?FirePoliceMunicipal agenciesAll the aboveHintPublic land radio is used in fire, municipal agencies, and police. 20). Is Public land radio limited to a certain area?YesNoMaybeHintYes, Public land radio is limited to a certain area. 21). Mobile telephones offer _______ transmission.HalfFullZeroInfiniteHintMobile telephones offer half transmission. 22). Mobile telephones are ________ systems.One to oneOne to manyMany to manyNone of theHintMobile telephones are one-to-one systems. 23). Do mobile telephones permit communication at a time?YesNoMaybeHintYes, Mobile telephones permit communication at a time. 24). Mobile telephones are safeguarded with _______ for privacy reason.Unique mobile numberId cardSIMIMEIHintMobile telephones are safeguarded with unique mobile number for privacy reasons. 25). Amateur radio covers ________ frequency band.BroadNarrowWideNone of the aboveHintAmateur radio covers broad frequency band. 26). Amateur radio with a broadband frequency ranges from ______ to _______.1.8MHz to 30MHz2MHZ3MHZ10Mhz to 20MHzHintAmateur radio with a broadband frequency ranges between 1 .8MHz to 30MHz range. 27). Which of the following are amateur radio frequencies?FSKASKContinuous waveAll the aboveHintAmateur radio frequencies are FSK, ASK, and continuous wave. 28). FSK is abbreviated as __________.Frequency shift keyingFrequency side keyingForward shift keyingAll the aboveHintFSK is abbreviated as Frequency shift keying. 29). ASK is abbreviated as _______.Amplitude shift keyingAmple shift keyingAltitude shift keyingNone of the aboveHintASK is abbreviated as amplitude shift keying. Read more about Amplitude Shift Keying. 30). When was mobile communication introduced?1983199919981967HintMobile communication was introduced in the year 1983. 31). Who firstly introduced mobile communication?MotorolaLGSamsungNone of the aboveHintMotorola has firstly introduced mobile communication. 32). Mobile communication technology is built with ________.ProtocolsSpeedServicesAll the aboveHintMobile communication technology is built with protocols, speed, and services. 33). _______ is responsible for the evolution of mobile communication generation.ModificationReplacementsFixingNone of the aboveHintModification in mobile feature is responsible for the evolution of mobile communication generation. 34). Which of the following are the technologies used in mobile communications?1G2G3GAll the aboveHintThe technologies used in mobile communications are 1G, 2G, 3G, 4G, and 5G. 35). Mobile communication technology used in 2021 is _______.4G3G5GBoth a and cHintMobile communication technology in 2021 used is 4G and 5G. 36). Which of the following is 1st generation of wireless mobile communication technology?1G2G3G5GHint1st generation of wireless mobile communication technology is 1G. 37). 1G uses _______ type of signals to communicate data.DigitalAnalogDiscreteNone of the aboveHint1G uses an analog type of signal to communicate data. 38). 1G was introduced in _______ year.1980198819901967Hint1G was introduced in the year 1980. 39). 1G supports _______ type of mobile communication.VoiceAudioVideoBoth a and bHint1G supports voice also called an audio type of mobile communication. 40). 1G was introduced by_______ country.IndiaUSGermanyChinaHint1G was introduced by US.Mobile Communication MCQs for Interviews 41). 1G has the speed of _________.2.4 kbps3 kbps4 kbps5 kbpsHint1G has speed in the range up to 2.4 kbps range. 42). Which of the following are the feature of 1G?Poor quality of voiceLess securePower consumption is moreAll the aboveHintThe feature of 1G are poor quality of voice, less secure, and consumes more power. 43). _______ is a second-generation technology.2G3G4G5GHint2G is a second-generation technology. 44). 2G technology uses _______ signals.AnalogueDigitalContinuousNone of the aboveHint2G technology uses digital signals. 45). 2G technology was released by ________ country.GermanyFinlandFrenchChinaHint2G technology was released by Finland. 46). 2G technology was released by Finland in _______ year.1991199019921994Hint2G technology was released by Finland in the year 1991. 47). 2G mobile communication uses ________ technology.GSMWifiGPRSBoth a and cHint2G mobile communication uses GSM and GPRS technology. 48). 2G mobile communication operates up to _______ speed.64 kbps50 kbps60 kbps40 kbpsHint2G mobile communication operates up to 64 kbps of speed. 49). Which of the following are the features of 2G mobile communication technology?Better quality compared to 1GSupports multimediaSupports textAll the aboveHintThe features of 2G mobile communication technology are better quality compared to 1G, supports multimedia and text features. 50). Is GPRS technology introduced along with 2G mobile communication technology?YesNoMaybeHintYes, GPRS technology was introduced with 2G mobile communication technology. 51). Which of the following are the features supported by GPRS in 2G technology?EmailsWeb browsingDownloadsAll the aboveHintThe features supported by GPRS in 2G technology are emails, web browsing, downloads. 52). 2G technology with GPRS is also called as _________.2.5 G3G4G5GHint2G technology with GPRS is also called 2.5G. 53). Third-generation mobile communication technology is represented as _______.3G3.4 G4G2GHintThird-generation mobile communication technology is represented as 3G. 54). Which of the following are the 3G mobile communication features?High internet speedHigh data speed3D gamingAll the aboveHintFeatures provided by 3G mobile communication are high internet speed, high data speed, and 3D gaming. 55). What is the data speed range of 3G mobile communication?144kbps to 2Mbps100kbps to 2Mbps200kbps to 2Mbps300 kbps to 345 KbpsHintThe data speed range of 3G mobile communication is 144kbps to 2Mbps. 56). Which of the following are web-based applications used by 3G?Video conferenceEmailsMultimediaAll the aboveHintWeb-based applications used by 3G are emails, multimedia, and video conference. 57). Which of the following are the disadvantages of 3G technology?Costly mobile devicesRequires high infrastructureHigh maintenance costAll the aboveHintThe disadvantages of 3G technology are Costly mobile devices, Requires high infrastructure, and high maintenance cost. 58). The next generation of 3G is ________.3.2G3.5G3.6G4GHintThe next generation of 3G is 3.5G. 59). Mobile is also called as _________.Cell phoneHandphoneMobile cellular networkAll the aboveHintA mobile is also called a cell phone, mobile cellular network, and handphone. 60). GPS stands for _________.Global positioning systemsGlobal partial systemGeo-positioning systemAll the aboveHintGPS stands for Global positioning systems. 61). The function of GPS is ________.Navigates to correct address on earthLocates address on earthPoints addressAll the aboveHintThe function of GPS is to navigate to the correct address on earth, Locates address on earth, and Point address. 62). Which of the following are the components of GPS?SatellitesGround stationsTransmitter and receiverAll the aboveHintThe components of GPS are satellites, ground stations, and transmitter and receiver. 63). GPRS stands for ________.General packet radio receiverGeo packet radio receiverGradient packet radio receiverNone of the aboveHintGPRS stands for General packet radio receiver. 64). GPRS is used in ________ mobile technology.2G3G4GBoth a and bHintGPRS is used in 2G and 3G mobile technology. 65). ______ has led to the growth of mobile communication services.Increase in battery consumptionIncrease in IC technologyIncrease in DSPAll the aboveHintAn increase in battery consumption, IC technology, and DSP has led to the growth of mobile communication services. 66). In cellular network frequency spectrum are divided into _________.Discrete channelsNon-discrete channelClass of frequencyNone of the aboveHintIn a cellular network frequency spectrum is divided into discrete channels. 67). _______ are added to geographic cells of a specific area.Discrete channelsNon-discrete channelClass of frequencyNone of the aboveHintDiscrete channels in the group are added to geographic cells of a specific area. 68). Analog cellular phone is ______ generation technology.1G2G3G4GHintThe analog cellular phone is 1st generation technology. 69). Digital cellular phone is ______ generation technology.1G2G3G4GHintThe digital cellular phone is 2nd generation technology. 70). AMPS stands for ________.Advanced mobile telephony systemAdvanced medium telephony systemAutomobile telephony systemNone of the aboveHintAMPS stands for Advanced mobile telephony system. 71). 1G technology was developed based on ______.Advanced mobile telephony systemAdvanced medium telephony systemAutomobile telephony systemNone of the aboveHint1G technology was developed based on an "Advanced mobile telephony system." 72). AMPS is a _______ service.Standard cellular telephone serviceCellular telephone serviceStandard cellular serviceNone of the aboveHintAMPS is a standard cellular telephone service. 73). AMPS in 1G was introduced by ________.Illinois BellRichardCharlesDennisHintAMPS in 1G was introduced by Illinois Bell. 74). Analogue cellular phone has a maximum deviation of the frequency of ______ for 100% modulation.+/- 12 KHz+/- 11 KHz+/- 10 KHz+/- 9 KHzHintAn analog cellular phone has a maximum deviation of frequency between+/- 12 kHz for 100% modulation. 75). AMPS uses _______ modulation technique.Frequency division multiple accessPhase modulationAmplitude modulationAll the aboveHintAMPS uses frequency division multiple access modulation techniques. 76). Does AMPS separate transmissions in frequency domain?YesNoMaybeHintYes, AMPS separates transmissions in the frequency domain. 77). Subscribers in an analog cellular phone are assigned _______ for mobile call purpose.Voice channelsAudio channelsVideo channelsBoth a and bHintSubscribers in an analog cellular phone are assigned audio or voice channels for mobile call purposes. 78). Which of the following is the process performed at receiver end in mobile communication?ModulationDecodingDemodulationBoth b and cHintThe process performed at the receiver end in mobile communication is demodulation and decoding. 79). Audio channels are also called as ________.Voice channelsImage channelsVideo channelsBoth a and bHintAudio channels are also called voice channels. 80). Subscribers in an analog cellular phone are assigned with ____ number of audio channels for mobile call purpose.Add description here!2345HintSubscribers in an analog cellular phone are assigned with 2 audio channels for mobile call purposes.Mobile Communication Exam Questions & Answers 81). Which of the following are analog cellular phones, audio channels for mobile call purpose?ForwardReverseOne wayBoth a and bHintAnalog cellular phone, audio channels for mobile call purpose are reverse and forward. 82). _______ techniques are used by a user to share the spectrum in an efficient way.Multiple access techniqueFrequently access techniquesRarely access techniquesNone of the aboveHintMultiple access techniques are used by a user to share the spectrum in an efficient way. 83). Wireless communication uses _______ method.MultiplexingQuantizingEqualizingNone of the aboveHintWireless communication uses the Multiplexing method. Read more about Multiplexing. 84). Wireless communication uses ______ number of Multiplexing methods.2345HintWireless communication uses 3 Multiplexing methods. 85). Which of the following are multiplexing methods used in mobile communication?TDMAFDMACDMAAll the aboveHintMultiplexing methods used in mobile communication are TDMA- time-division multiplexing, FDMA- frequency division multiplexing, and CDMA- code division multiplexing. 86). In which spectrum available spectrum is divided and further these narrow bands are divided equally into time slots?TDMAFDMACDMAAll the aboveHintIn TDMA, the spectrum available spectrum is divided into and further these narrow bands are divided equally into time slots. 87). In North America, the digital cellular standard at IS 136 for each frequency channel is assigned with ______ frequency.30 KHz50 KHz59 Hz70 HzHintIn North America, the digital cellular standard at IS 136 for each frequency channel is assigned with 30 KHz of frequency. 88). _______ multiplexing technique allows user to share traffic channels.TDMAFDMACDMAAll the aboveHintFDMA multiplexing technique allows users to share traffic channels. 89). The process where users share available spectrum in the frequency band is called _________.Traffic channelCongestion channelNoiseDisturbanceHintThe process where users share available spectrum in the frequency band is called traffic channel. 90). In which multiplexing technique, different users are assigned with the different channels.TDMAFDMACDMAAll the aboveHintIn the FDMA multiplexing technique, different users are assigned a different channel. 91). _______ cellular systems use FDMA type system.DigitalAnalogBoth a and bDiscreteHintAnalog Cellular systems use FDMA type system. 92). Which of the following is a multicellular transmission type technique?FDMAOFDMCDMATDMAHintOFDMA is a multi-cellular transmission type technique. 93). OFDMA stands for ________.Orthogonal frequency division multiplexingOriginal frequency division multiplexingOrthogonal frequency derived multiplexingOrthogonal frequency-division mutantHintOFDMA stands for Orthogonal frequency division multiplexing. 94). OFDMA was introduced by _______.Robert WWilliamsRichardCharlesHintOFDMA was introduced by Robert W. 95). OFDMA was introduced by Robert W in ________ year.1966196719651999HintOFDMA was introduced by Robert W in the year 1966. 96). Is OFDM a FDMA technique?YesNoMaybeHintYes, OFDM is a FDMA technique. 97). OFDMA was incorporated into _______ standard.Wireless networkWired networkCable networkAll the aboveHintOFDMA was incorporated into wireless type standard. 98). In OFDMA, data stream are carried by multiple _____ rate subcarrier type tones.HighLowZeroInfiniteHintIn OFDMA data streams are carried by multiple low rate subcarrier type tones. 99). Does OFDMA overcomes hostile frequency selective type fading?YesNoMaybeHintYes, OFDMA overcomes hostile frequency selective type fading. 100). OFDMA combines benefits of ______ techniques.Coherent detectionOFDM modulationOFDM demodulationBoth a and bHintOFDMA combines the benefits of OFDM modulation and Coherent detection techniques. 101). OFDM technique reduces electrical BW using ______.Up-down conversionFrequency conversionIncreasing frequency bandwidthNone of the aboveHintOFDM technique reduces electrical BW using Up-down conversion. 102). OFDM is suitable for _______ speed circuit design.HighLowMediumZeroHintOFDM is suitable for high-speed circuit design. 103). OFDM uses _____ mathematical techniques for processing signal.FFTIFFTDFTBoth a and bHintOFDM uses IFFT and FFT mathematical techniques for processing signals. 104). FFT stands for ________.Fast Fourier TransformFast Forward TransformFast Fourier TurnNone of the aboveHintFFT stands for Fast Fourier Transform. 105). Which of the following are 1G mobile systems?NMT 450AMPSTACSAll the aboveHint1G mobile systems include NMT 450, AMPS, TACS, and NMT 900. 106). NMT 450 was released in _______ year.1981198219851986HintNMT 450 was released in the year 1981. 107). AMPS was released in _______ year.1981198219851986HintAMPS was released in the year 1982. 108). TACS was released in _______ year.1981198219851986HintTACS was released in the year 1985. 109). NMT 900 was released in _______ year.1981198219851986HintNMT was released in the year 1986. 110). In NMT 400 or 900, NMT stands for ______.Nordic MobileNorthern MobileNordic MicNone of the aboveHintIn NMT 400 or 900, NMT stands for Nordic Mobile. 111). TACS stands for ________.Total Access Communication SystemTotal Allocate Communication SystemTotal Access Conduct SystemNone of the aboveHintTACS stands for Total Access Communication System. 112). Which of the following are the disadvantages of 1G?AnalogNot robustIncompatible standardsAll the aboveHintThe disadvantages of 1G are analog communication, not robust, and incompatible standards. 113). Which of the following are the advantages of 2G?Advanced modulation techniquesReduce in overheadIncludes services such as SMSAll the aboveHintAdvantages of 2G are - uses advanced modulation techniques, reduce in overhead, and service such as SMS are included. 114). Which of the following are 2G technologies?DAMPSGSMJDCAll the aboveHint2G technologies include DAMPS, GSM, JDC, CT-2, and DECT. 115). DAMPS 2G technology stands for _______.Digital Advanced Mobile Phone SystemsDigital Auto Mobile Phone SystemsDigital Advanced Mode Phone SystemsNone of the aboveHintDAMPS, 2G technology stands for Digital advanced mobile phone systems. 116). DAMPS 2G technology was used in _______ country.North AmericaEuropeanJapanUKHintDAMPS, 2G technology is used by North America. 117). GSM 2G technology was used by ______.North AmericaEuropeanJapanUKHintGSM, 2G technology was used by European countries. 118). JDC 2G technology stands for ________.Japanese Digital CellularJapanese Data CellularJapanese Digital CiteNone of the aboveHintJDC, 2G technology stands for Japanese Digital Cellular. 119). JDC 2G technology is used by _______ country.North AmericaEuropeanJapanUKHintJDC, 2G technology is used by Japan. 120). CT-2 of 2G technology stands for ________.Cordless Telephones-2Cordless Telegraph-2Cord Telephones-2None of the aboveHintCT-2 of 2G technology stands for Cordless Telephones-2.Mobile Communication Important Questions for Interviews 121). CT-2 of 2G technology is used in ________ country.North AmericaEuropeanJapanUKHintCT-2 of 2G technology is used by the UK. 122). GSM uses ________ number of frequency range.3456HintGSM uses 4 frequency ranges. 123). GSM is implemented using 4 frequency ranges and ______ number of multiplexing techniques.3456HintGSM is implemented using 4 frequency ranges and 3 multiplexing techniques. 124). Which of the following are the multiplexing techniques used in GSM?FDMATDMAFDDAll the aboveHintThe multiplexing techniques used in GSM are FDMA, TDMA, and FDD. 125). Primary GSM uses uplink frequency in the range between _______.890 to 915 MHz935 to 960 MHz880 to 915 MHz925 to 960 MHzHintPrimary GSM uses uplink frequency in the range between 890 to 915 MHz. 126). Primary GSM uses downlink frequency in the range between _______.890 to 915 MHz935 to 960 MHz880 to 915 MHz925 to 960 MHzHintPrimary GSM uses downlink frequency in the range between 935 to 960 MHz. 127). Extended GSM uses uplink frequency in the range between _______.890 to 915 MHz935 to 960 MHz880 to 915 MHz925 to 960 MHzHintExtended GSM uses uplink frequency in the range between 880 to 915 MHz. 128). Extended GSM uses downlink frequency in the range between _______.890 to 915 MHz935 to 960 MHz880 to 915 MHz925 to 960 MHzHintExtended GSM uses downlink frequency in the range between 925 to 960 MHz. 129). GSM 1800 uses uplink frequency in the range between _______.1710 to 1785 MHz1805 to 1880 MHz1850 to 1910 MHZ1930 to 1990 MHZHintGSM 1800 uses uplink frequency in the range between 1710 to 1785 MHz. 130). GSM 1800 uses downlink frequency in the range between ________.1710 to 1785 MHz1805 to 1880 MHz1850 to 1910 MHZ1930 to 1990 MHZHintGSM 1800 uses downlink frequency in the range between 1805 to 1880 MHz. 131). GSM 1900 uses uplink frequency in the range between _______.1710 to 1785 MHz1805 to 1880 MHz1850 to 1910 MHZ1930 to 1990 MHZHintGSM 1900 uses uplink frequency in the range between 1850 to 1910 MHZ. 132). GSM 1900 uses downlink frequency in the range between _______.1710 to 1785 MHz1805 to 1880 MHz1850 to 1910 MHZ1930 to 1990 MHZHintGSM 1900 uses downlink frequency in the range between 1930 to 1990 MHZ. 133). The cellular approach in mobile radio is used when frequency resource is _______.LimitedZeroMaximumMinimumHintThe cellular approach in mobile radio is used when frequency resource is limited. 134). A cellular network in which the sum of the area is divided into a smaller portion of are is called _______CellsZonePerimeterFenceHintA cellular network in which the sum of the area is divided into a smaller portion of are is called cells. 135). A cell can cover _______ number of mobile subscribers.MultipleLimitedNumerousZeroHintA cell can cover a limited number of mobile subscribers. 136). Which of the following are the components of a cell?Base stationRF channelsTransmitter and receiverBoth a and bHintThe components of a cell are base-station and RF channels. 137). Is the frequency within a cell is simultaneously utilized by other cells at a geographical distance?YesNoMaybeHintYes, frequency within a cell is simultaneously utilized by other cells at a geographical distance. 138). A 7 cell type pattern divides frequency resources into ______ number of parts.5673HintA 7 cell type pattern divides frequency resources into 7 parts, where each part constitutes cell site and radio channels. 139). A cluster of cells where the available frequency spectrum is completely consumed is called ______.Cluster of cellsGroup cellsCell siteNone of the aboveHintA group of cells where the available frequency spectrum is completely consumed is called a cluster of cells. 140). If 2 cells have a similar number of adjacent clusters and use the same RF channel set then the channel is called _______.Co-channel cellAdjacent cellSide-channelNeighboring cellHintIf 2 cells have a similar number of adjacent clusters and use the same RF channel set then the channel is called a co-channel cell. 141). Which of the following are the properties of the cellular site?Uses available RF efficientlyMobile user can get an efficient signal within cell siteZero disturbanceBoth a and bHintThe properties of the cellular site are it uses available RF efficiently and a mobile user can get an efficient signal within the cell site. 142). A cell is available in which of the following shapes?HexagonSquareTriangleAll the aboveHintA cell is available in shapes such as square, triangle, and hexagon. 143). A hexagon shape covers a specific area using ______ cells.FewManySingleTwoHintA hexagon shape covers a specific area using fewer cells. 144). A hexagonal cell has a minimum number of _______.Base stationsCapital investmentsBoth a and bTransmitterHintA hexagonal cell has a minimum number of base stations and capital investments. 145). Can other shapes such as triangle, circle, or square type cell provide efficient coverage compared to hexagon cell shape?YesNoMaybeHintNO, other shapes such as triangle, circle, or square type cell do not provide efficient coverage compared to hexagon cell shape. 146). Do radio signals depend on environmental conditions?YesNoMaybeHintYes, radio signals do depend on environmental conditions when they travel from transmitter to receiver. 147). Which of the following is the reason behind radio signal dependency on the environment?Separation between receiver and transmitterObjects like trees, terrain, and buildingsClimatic changesAll the aboveHintThe reason behind radio signal dependency on the environment is due to the separation between receiver and transmitter, intermediate objects like trees, terrain, and buildings, and climatic changes. 148). The variation of signal attenuation with respect to different parameters is called ______.FadingDistortionDisturbanceNoiseHintThe variation of signal attenuation with respect to different parameters is called fading. 149). Fading is a _________ process.RandomContinuousDiscontinuousNone of the aboveHintFading is a random type process. 150). Fading is of _______ types.3456HintFading is of 4 types slow, fast, block, and selective type fading. 151). Which of the following are the advantages of mobile communication?Location-independentWireless communicationOperates at higher speedAll the aboveHintThe advantage of using mobile communication is location independent, wireless communication operates at higher speed, easily accessible, and provides a connection. 152). Which of the following are the disadvantages of mobile communication?Workflow disruptionRequires effective monitoringSecurity breachAll the aboveHintThe disadvantages of mobile communication are workflow disruption, requires effective monitoring, and security breaches. 153). What is the value of RF signal propagation in free space?2345HintRF signal propagation in free space is r= 2. 154). RF signal propagation constant with value 2 is applied for ______ systems.Static radioDynamic radioBoth a and bNone of the aboveHintRF signal propagation constant with value 2 is applied for static type radio systems. 155). What is the range value of RF signal propagation constant in a mobile environment?2 to 33 to 44 to 6Both b and cHintRF signal propagation constant value in mobile environment ranges between 3 to 4. 156). LOS in mobile communication is abbreviated as ________.Line Of SightLight of SightLinear Of SightLoss of SightHintLOS in mobile communication is abbreviated as Line Of Sight. 157). _______ propagation of RF waves occurs due to reflection of RF energy from obstacles.MultipathUnidirectionalBi-directionalAll the aboveHintMultipath propagation of RF waves occurs due to the reflection of RF energy from obstacles. 158). Reflection of waves generally occurs from ________.WallsHillObjectsAll the aboveHintReflection of waves generally occurs from walls, hills, and other physical objects. 159). Do reflected waves undergo phase change?YesNoMaybeHintYes, reflected waves undergo a phase change. 160). At what degrees of phase do reflect waves cancel out each other?90120180260HintAt 180 degrees of phase reflected waves cancel out each other.Mobile Communication MCQs With Answers 161). When a signal cancels out, does its signal strength reduce?YesNoMaybeHintYes, when a signal cancels out, its signal strength becomes weak. 162). Multipath propagation property in mobile communication leads to ________.Inter symbol interfacePulse wideningBoth a and bSignal discardingHintMultipath propagation property in mobile communication leads to inter symbol interface and Pulse widening. 163). _______ type of fading in mobile communication is caused due to multipath reception.Rayleigh fadingShadow fadingBlock fadingSelective fadingHintRayleigh type of fading in mobile communication is caused due to multipath reception. 164). ________ cause changes in the frequency of the received RF type signal.Mobility of subscriberMobile phone usageTurning of signalAll the aboveHintMobility of subscriber causes changes in the frequency of received RF type signal. 165). Which of the following are the counter techniques for solving frequency distortion of an RF signal?Channel codingInterleavingEqualizationAll the aboveHintThe counter techniques for solving frequency distortion of an RF signal are channel coding, interleaving, and equalization. 166). Which of the following are the advantages of sectoring?Decreases co-channel interferenceIncreases systems capacityIncreases noiseBoth a and bHintThe advantages of sectoring are it increases systems capacity and decreases co-channel interferences. 167). Which of the following are the disadvantages of sectoring?Requires more antennasReduces efficiency of trunkingIncreases use of Hands offsAll the aboveHintThe disadvantages of sectoring are it requires more antennas, reduces the efficiency of trunking, and increases the use of Hands offs. 168). Do mobile units when travels through a path cross different cells?YesNoMaybeHintYes, a mobile unit when travels through a path do crosses different cells. 169). Mobile unit traveling through different cells enters different frequency allows the control taken by ______.Base stationsAntennaServersAll the aboveHintMobile unit traveling through different cells enters different frequencies allows the control taken by a base station. 170). Mobile unit traveling through different cells enters different frequencies allows a base station to take control is defined as ______.Hands offTruckingInterpolationAll the aboveHintMobile unit traveling through different cells enters different frequencies allows a base station to take control is defined as hands-off. 171). Which of the following are the conditions for hand-off?Signal received should be below threshold valueInterface ratio of a carrier should be below that 18dBHigh power consumptionBoth a and bHintThe conditions for handoff are the signal received should be below a threshold value and the interface ratio of a carrier should be below that 18dB. 172). Which of the following is the function of an imperfect filter?Leaks frequencies into pass bandAdjacent channel interferenceHigh power consumptionsBoth a and bHintThe function of an imperfect filter is to leak frequencies into passband and adjacent channel interference. 173). Which of the following are the countermeasures for an imperfect filter?Isolating RF channelReducing distanceImproving SNR rationAll the aboveHintThe countermeasure for an imperfect filter is by isolating the RF channel. 174). It is not possible to separate RF frequencies when the value of the reuse factor is ______.SmallLargeInfiniteZeroHintIt is not possible to separate RF frequencies when the value of the reuse factor is small. 175). _______ is used for accommodating multiple users within a limited radio spectrum.TrunkingFadingMultiplexingBoth a and bHintTrunking is used for accommodating multiple users within a limited radio spectrum. 176). GOS in mobile communication stands for _______.Grade of ServiceGrade of SiteGeneral out SourcingNone of the aboveHintGOS in mobile communication stands for Grade of Service. 177). The condition where all the channels are engaged is called _______.Grade of ServiceTrunkingFadingNone of the aboveHintThe condition where all the channels are engaged is called Grade of Service. 178). Cellular-based designers estimate _______ to allocate RF number of channels to meet GOS.CostCapacitySNRAll the aboveHintCellular-based designers estimate capacity to allocate RF number of channels to meet GOS. 179). ________ is required to calculate GOS value.ERLANG B tableLOG tableAnti Log TableAll the aboveHintERLANG B table is required to calculate the GOS value. 180). The advantage of cell splitting is ________.Improves capacityReduces transmission powerAdds noiseBoth a and bHintThe advantage of cell splitting is it reduces transmission power and improves the capacity of the cell. 181). GSM network in mobile communication has _______ number of systems.2345HintGSM network in mobile communication has 4 systems. 182). Which of the following are the GSM network systems?Switching systemMobile stationBase station systemOperation and maintenance center (OMC)All the aboveHintGSM network systems are switching system, mobile station, base station system, and Operation and maintenance center (OMC). 183). Switching system is also named _______.Network and Switching SystemsNetworking systemsService systemsAll the aboveHintThe switching system is also named Network and Switching Systems. 184). NSS in mobile networking systems is abbreviated as _________.Network and Switching SystemsNetworking Systems SwitchNetwork Software SystemAll the aboveHintNSS in mobile networking systems is abbreviated as Network and Switching Systems. 185). Which of the following is the function of NSS?Processes callsProcesses subscriber related functionsDeactivates networkBoth a and bHintThe function of NSS is to process subscribers-related functions and calls. 186). Which of the following are the functional units of NSS?Mobile switching centerVisitor location registerHome location registerAll the aboveHintThe functional units of NSS are mobile switching center, visitor location register, home location register, authentication center, and equipment identity register. 187). Mobile switching center interfaces with ________ to operate.PSTNMSCOther mobile switching centersAll the aboveHintMobile switching center interfaces with PSTN, MSC, and other mobile switching centers to operate. 188). Which of the following are the functions of MSC?Handles location registrationHandles MSC-BSS signal protocolManages radio link during callsAll the aboveHintThe functions of MSC are it handles location registration, handles MSC-BSS signal protocol, and manages radio link during calls 189). MSC is abbreviated as ________.Mobile Switching CentersMobile Setup CentersMovement Switching CentersAll the aboveHintMSC is abbreviated as Mobile Switching Centers. 190). Which of the following are the components of the home location register?Contains IMSIServices subscription informationInformation on service restrictionAll the aboveHintThe components of the home location register are Contains IMSI, Services subscription information, and Information on service restriction. 191). IMSI is abbreviated as ___________.International Mobile Sub IdentityInternet Mobile Sub IdentityInternational Mobile Side IdentityNone of the aboveHintIMSI is abbreviated as International Mobile Sub Identity. 192). HLR is abbreviated as __________.Home Location RegisterHide Location RegisterHome Location RelayNone of the aboveHintHLR is abbreviated as Home Location Register. 193). Visitor location register is integrated with ________.MSCHLRISDNAll the aboveHintThe visitor location register is integrated with MSC. 194). Which of the following components does VLR comprise of?Mobile sub identityTemporary identity of mobile subISDN mobile directory numberAll the aboveHintVLR comprises of mobile sub identity, the temporary identity of a mobile sub, and ISDN mobile directory number. 195). IMEI stands for _________.International Mobile Equipment IdentityInter Mobile Equipment IdentityInternational Movable Equipment IdentityNone of the aboveHintIMEI stands for International Mobile Equipment Identity. 196). Authentication center is related to ________.HLRVLRMSCNone of the aboveHintThe authentication center is related to HLR. 197). Authentication center provides _______ for each mobile subscriber.Authentication keys (Ki)InformationMessagesAll the aboveHintThe authentication center provides authentication keys for each mobile subscriber. 198). The authentication key provided by the authentication center generates ______.RANDSRESCipher keyAll the aboveHintThe authentication key provided by the authentication center generates RAND (Random number), SRES (Signed Response), and cipher key. 199). Which of the following is the function of SRES in the authentication key?Authenticates mobileAuthenticates IMSISecures messagesAll the aboveHintThe function of SRES in the authentication key is to authenticate IMSI. 200). Which of the following are the functions of the cipher key?Encrypts communicationTransmits communicationAuthenticates IMSIAll the aboveHintThe function of the cipher key is it encrypts communication. 201). Which of the following are the functions of the operation and maintenance center?Installs softwareManages trafficTraces subscriberAll the aboveHintThe functions of the operation and maintenance center are it installs software, manages traffic, and traces subscriber. 202). Which of the following are the components of a base station?Base trans receiver stationBase station controllerAntennaBoth a and bHintThe components of a base station are the base trans receiver station and base station controller. 203). Which of the following are the components of mobile stations?SIMMobile equipment’sBase stationBoth a and bHintThe components of mobile stations are SIM and Mobile equipment. 204). SIM is abbreviated as _________.Subscriber Identity ModuleSubscriber Idea ModuleSubscriber Identity ModeNone of the aboveHintSIM is abbreviated as Subscriber Identity Module. 205). Which of the following are the functions of a base station?Transmits and receives radio wavesControls data flowManages mobilityAll the aboveHintFunctions of base stations are it transmits and receives radio waves, controls data flow and manages mobility 206). European GSM system categorizes mobile telephones into ______ number of units.3456HintEuropean GSM system categorizes mobile telephones into 5 units namely 0W, 0.8W, 8W, and 5W. 207). Which of the following are other network elements of mobile communication?SMS service centersVoice mailboxSMS flowAll the aboveHintOther network elements of mobile communication are SMS service centers, Voice mailbox, and SMS flow. 208). Rayleigh fading is also called as ___________.Macroscopic variationMicroscopic variationSignal variationNone of the aboveHintRayleigh fading is also called Macroscopic variation. 209). Which of the following are the processes used while communicating information over radio link?CodingModulationInterferenceBoth a and bHintThe processes used while communicating information over radio links are modulation and coding. 210). Which of the following is the process performed transmitter end in mobile communication?ModulationCodingDemodulationBoth a and bHintThe process performed by the transmitter end in mobile communication is modulation and coding. Time is Up!