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 network Mobile network 2G network Both a and b HintMobile communication network is also called a mobile network or cellular network.2). _______ technology is used for communicating over large distances wirelessly. Mobile communication Land communication Communication All the above HintMobile communication type technology is used for communicating over large distances wirelessly.3). Which of the following are not used in mobile communication? Wires Cables Wired antenna All the above HintThe 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. 3.2G 3.5G 3.6G 4G Hint3.5 G technology has grouped different mobile telephony and data type technologies to over 3G.5). A mobile phone uses ______ type of duplex communication. Half Full Zero Both a and b HintA mobile phone uses a full type of duplex communication.6). A full-duplex communication is _______ way communication. Single Two Multiple All the above HintFull-duplex communication is 2-way communication.7). Which of the following are the features of mobile communication? High load balancing capacity Highly scalable Good network management system All the above HintThe features of mobile communication are high load balancing capacity, good network management system, and are highly scalable8). Which of the following are the examples of mobile communication systems? Cellular phones Cordless phones Wired phones Both a and b HintEexamples of a mobile communication system are cellular phones and Cordless phones.9). Which of the following are the facilities of mobile communications? Mobile 2way radio Mobile telephone Public land radio Amateur radio All the above HintThe 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 many Two-way Full duplex Simplex HintMobile 2-way radio is a one-to-many communication system.11). Mobile 2-way radio operates in _______ mode. Half-duplex Full duplex Multi duplex None of the above HintMobile 2-way radio operates in half-duplex type mode.12). Citizen band radio operates at _______ frequency. 26 to27.1 MHz 1.8 MHZ 2MHHz 3.5 MHz HintCitizen band radio operates at 26 to 27.1 MHz frequency.13). Citizen band radio communication use ______ type of modulation. AM FM PM All the above HintCitizen band radio communication use AM type of modulation. Read more about Amplitude Modulation.14). Citizen band radio at 10KHz has _______ number of channels. 20 30 40 50 HintCitizen band radio at 10KHz has 40 channels.15). Mobile 2-way radio uses _______ types of service. Commercial Non-commercial Paid All the above HintMobile 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 talk Switch to talk Hold to talk None of the above HintA 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 carrier Single sideband suppressed carrier Sideband carrier All the above HintA 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 many Two way FM radio Full duplex FM radio Simplex HintPublic land radio is a two-way FM-type radio system.19). Which of the following is the application of Public land radio? Fire Police Municipal agencies All the above HintPublic land radio is used in fire, municipal agencies, and police.20). Is Public land radio limited to a certain area? Yes No Maybe HintYes, Public land radio is limited to a certain area.21). Mobile telephones offer _______ transmission. Half Full Zero Infinite HintMobile telephones offer half transmission.22). Mobile telephones are ________ systems. One to one One to many Many to many None of the HintMobile telephones are one-to-one systems.23). Do mobile telephones permit communication at a time? Yes No Maybe HintYes, Mobile telephones permit communication at a time.24). Mobile telephones are safeguarded with _______ for privacy reason. Unique mobile number Id card SIM IMEI HintMobile telephones are safeguarded with unique mobile number for privacy reasons.25). Amateur radio covers ________ frequency band. Broad Narrow Wide None of the above HintAmateur radio covers broad frequency band.26). Amateur radio with a broadband frequency ranges from ______ to _______. 1.8MHz to 30MHz 2MHZ 3MHZ 10Mhz to 20MHz HintAmateur radio with a broadband frequency ranges between 1 .8MHz to 30MHz range.27). Which of the following are amateur radio frequencies? FSK ASK Continuous wave All the above HintAmateur radio frequencies are FSK, ASK, and continuous wave.28). FSK is abbreviated as __________. Frequency shift keying Frequency side keying Forward shift keying All the above HintFSK is abbreviated as Frequency shift keying.29). ASK is abbreviated as _______. Amplitude shift keying Ample shift keying Altitude shift keying None of the above HintASK is abbreviated as amplitude shift keying. Read more about Amplitude Shift Keying.30). When was mobile communication introduced? 1983 1999 1998 1967 HintMobile communication was introduced in the year 1983.31). Who firstly introduced mobile communication? Motorola LG Samsung None of the above HintMotorola has firstly introduced mobile communication.32). Mobile communication technology is built with ________. Protocols Speed Services All the above HintMobile communication technology is built with protocols, speed, and services.33). _______ is responsible for the evolution of mobile communication generation. Modification Replacements Fixing None of the above HintModification in mobile feature is responsible for the evolution of mobile communication generation.34). Which of the following are the technologies used in mobile communications? 1G 2G 3G All the above HintThe technologies used in mobile communications are 1G, 2G, 3G, 4G, and 5G.35). Mobile communication technology used in 2021 is _______. 4G 3G 5G Both a and c HintMobile communication technology in 2021 used is 4G and 5G.36). Which of the following is 1st generation of wireless mobile communication technology? 1G 2G 3G 5G Hint1st generation of wireless mobile communication technology is 1G.37). 1G uses _______ type of signals to communicate data. Digital Analog Discrete None of the above Hint1G uses an analog type of signal to communicate data.38). 1G was introduced in _______ year. 1980 1988 1990 1967 Hint1G was introduced in the year 1980.39). 1G supports _______ type of mobile communication. Voice Audio Video Both a and b Hint1G supports voice also called an audio type of mobile communication.40). 1G was introduced by_______ country. India US Germany China Hint1G was introduced by US.Mobile Communication MCQs for Interviews41). 1G has the speed of _________. 2.4 kbps 3 kbps 4 kbps 5 kbps Hint1G has speed in the range up to 2.4 kbps range.42). Which of the following are the feature of 1G? Poor quality of voice Less secure Power consumption is more All the above HintThe feature of 1G are poor quality of voice, less secure, and consumes more power.43). _______ is a second-generation technology. 2G 3G 4G 5G Hint2G is a second-generation technology.44). 2G technology uses _______ signals. Analogue Digital Continuous None of the above Hint2G technology uses digital signals.45). 2G technology was released by ________ country. Germany Finland French China Hint2G technology was released by Finland.46). 2G technology was released by Finland in _______ year. 1991 1990 1992 1994 Hint2G technology was released by Finland in the year 1991.47). 2G mobile communication uses ________ technology. GSM Wifi GPRS Both a and c Hint2G mobile communication uses GSM and GPRS technology.48). 2G mobile communication operates up to _______ speed. 64 kbps 50 kbps 60 kbps 40 kbps Hint2G 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 1G Supports multimedia Supports text All the above HintThe 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? Yes No Maybe HintYes, GPRS technology was introduced with 2G mobile communication technology.51). Which of the following are the features supported by GPRS in 2G technology? Emails Web browsing Downloads All the above HintThe features supported by GPRS in 2G technology are emails, web browsing, downloads.52). 2G technology with GPRS is also called as _________. 2.5 G 3G 4G 5G Hint2G technology with GPRS is also called 2.5G.53). Third-generation mobile communication technology is represented as _______. 3G 3.4 G 4G 2G HintThird-generation mobile communication technology is represented as 3G.54). Which of the following are the 3G mobile communication features? High internet speed High data speed 3D gaming All the above HintFeatures 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 2Mbps 100kbps to 2Mbps 200kbps to 2Mbps 300 kbps to 345 Kbps HintThe data speed range of 3G mobile communication is 144kbps to 2Mbps.56). Which of the following are web-based applications used by 3G? Video conference Emails Multimedia All the above HintWeb-based applications used by 3G are emails, multimedia, and video conference.57). Which of the following are the disadvantages of 3G technology? Costly mobile devices Requires high infrastructure High maintenance cost All the above HintThe disadvantages of 3G technology are Costly mobile devices, Requires high infrastructure, and high maintenance cost.58). The next generation of 3G is ________. 3.2G 3.5G 3.6G 4G HintThe next generation of 3G is 3.5G.59). Mobile is also called as _________. Cell phone Handphone Mobile cellular network All the above HintA mobile is also called a cell phone, mobile cellular network, and handphone.60). GPS stands for _________. Global positioning systems Global partial system Geo-positioning system All the above HintGPS stands for Global positioning systems.61). The function of GPS is ________. Navigates to correct address on earth Locates address on earth Points address All the above HintThe 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? Satellites Ground stations Transmitter and receiver All the above HintThe components of GPS are satellites, ground stations, and transmitter and receiver.63). GPRS stands for ________. General packet radio receiver Geo packet radio receiver Gradient packet radio receiver None of the above HintGPRS stands for General packet radio receiver.64). GPRS is used in ________ mobile technology. 2G 3G 4G Both a and b HintGPRS is used in 2G and 3G mobile technology.65). ______ has led to the growth of mobile communication services. Increase in battery consumption Increase in IC technology Increase in DSP All the above HintAn 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 channels Non-discrete channel Class of frequency None of the above HintIn a cellular network frequency spectrum is divided into discrete channels.67). _______ are added to geographic cells of a specific area. Discrete channels Non-discrete channel Class of frequency None of the above HintDiscrete channels in the group are added to geographic cells of a specific area.68). Analog cellular phone is ______ generation technology. 1G 2G 3G 4G HintThe analog cellular phone is 1st generation technology.69). Digital cellular phone is ______ generation technology. 1G 2G 3G 4G HintThe digital cellular phone is 2nd generation technology.70). AMPS stands for ________. Advanced mobile telephony system Advanced medium telephony system Automobile telephony system None of the above HintAMPS stands for Advanced mobile telephony system.71). 1G technology was developed based on ______. Advanced mobile telephony system Advanced medium telephony system Automobile telephony system None of the above Hint1G technology was developed based on an "Advanced mobile telephony system."72). AMPS is a _______ service. Standard cellular telephone service Cellular telephone service Standard cellular service None of the above HintAMPS is a standard cellular telephone service.73). AMPS in 1G was introduced by ________. Illinois Bell Richard Charles Dennis HintAMPS 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 KHz HintAn analog cellular phone has a maximum deviation of frequency between+/- 12 kHz for 100% modulation.75). AMPS uses _______ modulation technique. Frequency division multiple access Phase modulation Amplitude modulation All the above HintAMPS uses frequency division multiple access modulation techniques.76). Does AMPS separate transmissions in frequency domain? Yes No Maybe HintYes, AMPS separates transmissions in the frequency domain.77). Subscribers in an analog cellular phone are assigned _______ for mobile call purpose. Voice channels Audio channels Video channels Both a and b HintSubscribers 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? Modulation Decoding Demodulation Both b and c HintThe process performed at the receiver end in mobile communication is demodulation and decoding.79). Audio channels are also called as ________. Voice channels Image channels Video channels Both a and b HintAudio 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! 2 3 4 5 HintSubscribers in an analog cellular phone are assigned with 2 audio channels for mobile call purposes.Mobile Communication Exam Questions & Answers81). Which of the following are analog cellular phones, audio channels for mobile call purpose? Forward Reverse One way Both a and b HintAnalog 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 technique Frequently access techniques Rarely access techniques None of the above HintMultiple access techniques are used by a user to share the spectrum in an efficient way.83). Wireless communication uses _______ method. Multiplexing Quantizing Equalizing None of the above HintWireless communication uses the Multiplexing method. Read more about Multiplexing.84). Wireless communication uses ______ number of Multiplexing methods. 2 3 4 5 HintWireless communication uses 3 Multiplexing methods.85). Which of the following are multiplexing methods used in mobile communication? TDMA FDMA CDMA All the above HintMultiplexing 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? TDMA FDMA CDMA All the above HintIn 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 KHz 50 KHz 59 Hz 70 Hz HintIn 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. TDMA FDMA CDMA All the above HintFDMA multiplexing technique allows users to share traffic channels.89). The process where users share available spectrum in the frequency band is called _________. Traffic channel Congestion channel Noise Disturbance HintThe 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. TDMA FDMA CDMA All the above HintIn the FDMA multiplexing technique, different users are assigned a different channel.91). _______ cellular systems use FDMA type system. Digital Analog Both a and b Discrete HintAnalog Cellular systems use FDMA type system.92). Which of the following is a multicellular transmission type technique? FDMA OFDM CDMA TDMA HintOFDMA is a multi-cellular transmission type technique.93). OFDMA stands for ________. Orthogonal frequency division multiplexing Original frequency division multiplexing Orthogonal frequency derived multiplexing Orthogonal frequency-division mutant HintOFDMA stands for Orthogonal frequency division multiplexing.94). OFDMA was introduced by _______. Robert W Williams Richard Charles HintOFDMA was introduced by Robert W.95). OFDMA was introduced by Robert W in ________ year. 1966 1967 1965 1999 HintOFDMA was introduced by Robert W in the year 1966.96). Is OFDM a FDMA technique? Yes No Maybe HintYes, OFDM is a FDMA technique.97). OFDMA was incorporated into _______ standard. Wireless network Wired network Cable network All the above HintOFDMA was incorporated into wireless type standard.98). In OFDMA, data stream are carried by multiple _____ rate subcarrier type tones. High Low Zero Infinite HintIn OFDMA data streams are carried by multiple low rate subcarrier type tones.99). Does OFDMA overcomes hostile frequency selective type fading? Yes No Maybe HintYes, OFDMA overcomes hostile frequency selective type fading.100). OFDMA combines benefits of ______ techniques. Coherent detection OFDM modulation OFDM demodulation Both a and b HintOFDMA combines the benefits of OFDM modulation and Coherent detection techniques.101). OFDM technique reduces electrical BW using ______. Up-down conversion Frequency conversion Increasing frequency bandwidth None of the above HintOFDM technique reduces electrical BW using Up-down conversion.102). OFDM is suitable for _______ speed circuit design. High Low Medium Zero HintOFDM is suitable for high-speed circuit design.103). OFDM uses _____ mathematical techniques for processing signal. FFT IFFT DFT Both a and b HintOFDM uses IFFT and FFT mathematical techniques for processing signals.104). FFT stands for ________. Fast Fourier Transform Fast Forward Transform Fast Fourier Turn None of the above HintFFT stands for Fast Fourier Transform.105). Which of the following are 1G mobile systems? NMT 450 AMPS TACS All the above Hint1G mobile systems include NMT 450, AMPS, TACS, and NMT 900.106). NMT 450 was released in _______ year. 1981 1982 1985 1986 HintNMT 450 was released in the year 1981.107). AMPS was released in _______ year. 1981 1982 1985 1986 HintAMPS was released in the year 1982.108). TACS was released in _______ year. 1981 1982 1985 1986 HintTACS was released in the year 1985.109). NMT 900 was released in _______ year. 1981 1982 1985 1986 HintNMT was released in the year 1986.110). In NMT 400 or 900, NMT stands for ______. Nordic Mobile Northern Mobile Nordic Mic None of the above HintIn NMT 400 or 900, NMT stands for Nordic Mobile.111). TACS stands for ________. Total Access Communication System Total Allocate Communication System Total Access Conduct System None of the above HintTACS stands for Total Access Communication System.112). Which of the following are the disadvantages of 1G? Analog Not robust Incompatible standards All the above HintThe disadvantages of 1G are analog communication, not robust, and incompatible standards.113). Which of the following are the advantages of 2G? Advanced modulation techniques Reduce in overhead Includes services such as SMS All the above HintAdvantages 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? DAMPS GSM JDC All the above Hint2G technologies include DAMPS, GSM, JDC, CT-2, and DECT.115). DAMPS 2G technology stands for _______. Digital Advanced Mobile Phone Systems Digital Auto Mobile Phone Systems Digital Advanced Mode Phone Systems None of the above HintDAMPS, 2G technology stands for Digital advanced mobile phone systems.116). DAMPS 2G technology was used in _______ country. North America European Japan UK HintDAMPS, 2G technology is used by North America.117). GSM 2G technology was used by ______. North America European Japan UK HintGSM, 2G technology was used by European countries.118). JDC 2G technology stands for ________. Japanese Digital Cellular Japanese Data Cellular Japanese Digital Cite None of the above HintJDC, 2G technology stands for Japanese Digital Cellular.119). JDC 2G technology is used by _______ country. North America European Japan UK HintJDC, 2G technology is used by Japan.120). CT-2 of 2G technology stands for ________. Cordless Telephones-2 Cordless Telegraph-2 Cord Telephones-2 None of the above HintCT-2 of 2G technology stands for Cordless Telephones-2.Mobile Communication Important Questions for Interviews121). CT-2 of 2G technology is used in ________ country. North America European Japan UK HintCT-2 of 2G technology is used by the UK.122). GSM uses ________ number of frequency range. 3 4 5 6 HintGSM uses 4 frequency ranges.123). GSM is implemented using 4 frequency ranges and ______ number of multiplexing techniques. 3 4 5 6 HintGSM is implemented using 4 frequency ranges and 3 multiplexing techniques.124). Which of the following are the multiplexing techniques used in GSM? FDMA TDMA FDD All the above HintThe multiplexing techniques used in GSM are FDMA, TDMA, and FDD.125). Primary GSM uses uplink frequency in the range between _______. 890 to 915 MHz 935 to 960 MHz 880 to 915 MHz 925 to 960 MHz HintPrimary 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 MHz 935 to 960 MHz 880 to 915 MHz 925 to 960 MHz HintPrimary 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 MHz 935 to 960 MHz 880 to 915 MHz 925 to 960 MHz HintExtended 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 MHz 935 to 960 MHz 880 to 915 MHz 925 to 960 MHz HintExtended 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 MHz 1805 to 1880 MHz 1850 to 1910 MHZ 1930 to 1990 MHZ HintGSM 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 MHz 1805 to 1880 MHz 1850 to 1910 MHZ 1930 to 1990 MHZ HintGSM 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 MHz 1805 to 1880 MHz 1850 to 1910 MHZ 1930 to 1990 MHZ HintGSM 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 MHz 1805 to 1880 MHz 1850 to 1910 MHZ 1930 to 1990 MHZ HintGSM 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 _______. Limited Zero Maximum Minimum HintThe 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 _______ Cells Zone Perimeter Fence HintA 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. Multiple Limited Numerous Zero HintA cell can cover a limited number of mobile subscribers.136). Which of the following are the components of a cell? Base station RF channels Transmitter and receiver Both a and b HintThe 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? Yes No Maybe HintYes, 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. 5 6 7 3 HintA 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 cells Group cells Cell site None of the above HintA 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 cell Adjacent cell Side-channel Neighboring cell HintIf 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 efficiently Mobile user can get an efficient signal within cell site Zero disturbance Both a and b HintThe 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? Hexagon Square Triangle All the above HintA cell is available in shapes such as square, triangle, and hexagon.143). A hexagon shape covers a specific area using ______ cells. Few Many Single Two HintA hexagon shape covers a specific area using fewer cells.144). A hexagonal cell has a minimum number of _______. Base stations Capital investments Both a and b Transmitter HintA 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? Yes No Maybe HintNO, 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? Yes No Maybe HintYes, 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 transmitter Objects like trees, terrain, and buildings Climatic changes All the above HintThe 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 ______. Fading Distortion Disturbance Noise HintThe variation of signal attenuation with respect to different parameters is called fading.149). Fading is a _________ process. Random Continuous Discontinuous None of the above HintFading is a random type process.150). Fading is of _______ types. 3 4 5 6 HintFading is of 4 types slow, fast, block, and selective type fading.151). Which of the following are the advantages of mobile communication? Location-independent Wireless communication Operates at higher speed All the above HintThe 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 disruption Requires effective monitoring Security breach All the above HintThe 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? 2 3 4 5 HintRF signal propagation in free space is r= 2.154). RF signal propagation constant with value 2 is applied for ______ systems. Static radio Dynamic radio Both a and b None of the above HintRF 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 3 3 to 4 4 to 6 Both b and c HintRF signal propagation constant value in mobile environment ranges between 3 to 4.156). LOS in mobile communication is abbreviated as ________. Line Of Sight Light of Sight Linear Of Sight Loss of Sight HintLOS in mobile communication is abbreviated as Line Of Sight.157). _______ propagation of RF waves occurs due to reflection of RF energy from obstacles. Multipath Unidirectional Bi-directional All the above HintMultipath propagation of RF waves occurs due to the reflection of RF energy from obstacles.158). Reflection of waves generally occurs from ________. Walls Hill Objects All the above HintReflection of waves generally occurs from walls, hills, and other physical objects.159). Do reflected waves undergo phase change? Yes No Maybe HintYes, reflected waves undergo a phase change.160). At what degrees of phase do reflect waves cancel out each other? 90 120 180 260 HintAt 180 degrees of phase reflected waves cancel out each other.Mobile Communication MCQs With Answers161). When a signal cancels out, does its signal strength reduce? Yes No Maybe HintYes, when a signal cancels out, its signal strength becomes weak.162). Multipath propagation property in mobile communication leads to ________. Inter symbol interface Pulse widening Both a and b Signal discarding HintMultipath 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 fading Shadow fading Block fading Selective fading HintRayleigh 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 subscriber Mobile phone usage Turning of signal All the above HintMobility 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 coding Interleaving Equalization All the above HintThe 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 interference Increases systems capacity Increases noise Both a and b HintThe 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 antennas Reduces efficiency of trunking Increases use of Hands offs All the above HintThe 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? Yes No Maybe HintYes, 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 stations Antenna Servers All the above HintMobile 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 off Trucking Interpolation All the above HintMobile 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 value Interface ratio of a carrier should be below that 18dB High power consumption Both a and b HintThe 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 band Adjacent channel interference High power consumptions Both a and b HintThe 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 channel Reducing distance Improving SNR ration All the above HintThe 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 ______. Small Large Infinite Zero HintIt 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. Trunking Fading Multiplexing Both a and b HintTrunking is used for accommodating multiple users within a limited radio spectrum.176). GOS in mobile communication stands for _______. Grade of Service Grade of Site General out Sourcing None of the above HintGOS in mobile communication stands for Grade of Service.177). The condition where all the channels are engaged is called _______. Grade of Service Trunking Fading None of the above HintThe 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. Cost Capacity SNR All the above HintCellular-based designers estimate capacity to allocate RF number of channels to meet GOS.179). ________ is required to calculate GOS value. ERLANG B table LOG table Anti Log Table All the above HintERLANG B table is required to calculate the GOS value.180). The advantage of cell splitting is ________. Improves capacity Reduces transmission power Adds noise Both a and b HintThe 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. 2 3 4 5 HintGSM network in mobile communication has 4 systems.182). Which of the following are the GSM network systems? Switching system Mobile station Base station system Operation and maintenance center (OMC) All the above HintGSM 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 Systems Networking systems Service systems All the above HintThe switching system is also named Network and Switching Systems.184). NSS in mobile networking systems is abbreviated as _________. Network and Switching Systems Networking Systems Switch Network Software System All the above HintNSS in mobile networking systems is abbreviated as Network and Switching Systems.185). Which of the following is the function of NSS? Processes calls Processes subscriber related functions Deactivates network Both a and b HintThe function of NSS is to process subscribers-related functions and calls.186). Which of the following are the functional units of NSS? Mobile switching center Visitor location register Home location register All the above HintThe 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. PSTN MSC Other mobile switching centers All the above HintMobile 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 registration Handles MSC-BSS signal protocol Manages radio link during calls All the above HintThe functions of MSC are it handles location registration, handles MSC-BSS signal protocol, and manages radio link during calls189). MSC is abbreviated as ________. Mobile Switching Centers Mobile Setup Centers Movement Switching Centers All the above HintMSC is abbreviated as Mobile Switching Centers.190). Which of the following are the components of the home location register? Contains IMSI Services subscription information Information on service restriction All the above HintThe 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 Identity Internet Mobile Sub Identity International Mobile Side Identity None of the above HintIMSI is abbreviated as International Mobile Sub Identity.192). HLR is abbreviated as __________. Home Location Register Hide Location Register Home Location Relay None of the above HintHLR is abbreviated as Home Location Register.193). Visitor location register is integrated with ________. MSC HLR ISDN All the above HintThe visitor location register is integrated with MSC.194). Which of the following components does VLR comprise of? Mobile sub identity Temporary identity of mobile sub ISDN mobile directory number All the above HintVLR comprises of mobile sub identity, the temporary identity of a mobile sub, and ISDN mobile directory number.195). IMEI stands for _________. International Mobile Equipment Identity Inter Mobile Equipment Identity International Movable Equipment Identity None of the above HintIMEI stands for International Mobile Equipment Identity.196). Authentication center is related to ________. HLR VLR MSC None of the above HintThe authentication center is related to HLR.197). Authentication center provides _______ for each mobile subscriber. Authentication keys (Ki) Information Messages All the above HintThe authentication center provides authentication keys for each mobile subscriber.198). The authentication key provided by the authentication center generates ______. RAND SRES Cipher key All the above HintThe 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 mobile Authenticates IMSI Secures messages All the above HintThe function of SRES in the authentication key is to authenticate IMSI.200). Which of the following are the functions of the cipher key? Encrypts communication Transmits communication Authenticates IMSI All the above HintThe function of the cipher key is it encrypts communication.201). Which of the following are the functions of the operation and maintenance center? Installs software Manages traffic Traces subscriber All the above HintThe 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 station Base station controller Antenna Both a and b HintThe 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? SIM Mobile equipment’s Base station Both a and b HintThe components of mobile stations are SIM and Mobile equipment.204). SIM is abbreviated as _________. Subscriber Identity Module Subscriber Idea Module Subscriber Identity Mode None of the above HintSIM is abbreviated as Subscriber Identity Module.205). Which of the following are the functions of a base station? Transmits and receives radio waves Controls data flow Manages mobility All the above HintFunctions of base stations are it transmits and receives radio waves, controls data flow and manages mobility206). European GSM system categorizes mobile telephones into ______ number of units. 3 4 5 6 HintEuropean 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 centers Voice mailbox SMS flow All the above HintOther network elements of mobile communication are SMS service centers, Voice mailbox, and SMS flow.208). Rayleigh fading is also called as ___________. Macroscopic variation Microscopic variation Signal variation None of the above HintRayleigh fading is also called Macroscopic variation.209). Which of the following are the processes used while communicating information over radio link? Coding Modulation Interference Both a and b HintThe 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? Modulation Coding Demodulation Both a and b HintThe process performed by the transmitter end in mobile communication is modulation and coding. Time is Up! Time's up
