Mobile Communication Question & Answers June 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 None Hint 2). _______ technology is used for communicating over large distances wirelessly. Mobile communication Land communication Communication All the above None Hint 3). Which of the following are not used in mobile communication? Wires Cables Wired antenna All the above None Hint 4). ______ technology has grouped different mobile telephony and data type technologies to over 3G. 3.2G 3.5G 3.6G 4G None Hint 5). A mobile phone uses ______ type of duplex communication. Half Full Zero Both a and b None Hint 6). A full-duplex communication is _______ way communication. Single Two Multiple All the above None Hint 7). Which of the following are the features of mobile communication? High load balancing capacity Highly scalable Good network management system All the above None Hint 8). Which of the following are the examples of mobile communication systems? Cellular phones Cordless phones Wired phones Both a and b None Hint 9). Which of the following are the facilities of mobile communications? Mobile 2way radio Mobile telephone Public land radio Amateur radio All the above None Hint 10). Mobile 2-way radio is ________ communication systems. One to many Two-way Full duplex Simplex None Hint 11). Mobile 2-way radio operates in _______ mode. Half-duplex Full duplex Multi duplex None of the above None Hint 12). Citizen band radio operates at _______ frequency. 26 to27.1 MHz 1.8 MHZ 2MHHz 3.5 MHz None Hint 13). Citizen band radio communication use ______ type of modulation. AM FM PM All the above None Hint Read more about Amplitude Modulation. 14). Citizen band radio at 10KHz has _______ number of channels. 20 30 40 50 None Hint 15). Mobile 2-way radio uses _______ types of service. Commercial Non-commercial Paid All the above None Hint 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 None Hint 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 None Hint 18). Public land radio is a _________ system. One to many Two way FM radio Full duplex FM radio Simplex None Hint 19). Which of the following is the application of Public land radio? Fire Police Municipal agencies All the above None Hint 20). Is Public land radio limited to a certain area? Yes No Maybe None Hint 21). Mobile telephones offer _______ transmission. Half Full Zero Infinite None Hint 22). Mobile telephones are ________ systems. One to one One to many Many to many None of the None Hint 23). Do mobile telephones permit communication at a time? Yes No Maybe None Hint 24). Mobile telephones are safeguarded with _______ for privacy reason. Unique mobile number Id card SIM IMEI None Hint 25). Amateur radio covers ________ frequency band. Broad Narrow Wide None of the above None Hint 26). Amateur radio with a broadband frequency ranges from ______ to _______. 1.8MHz to 30MHz 2MHZ 3MHZ 10Mhz to 20MHz None Hint 27). Which of the following are amateur radio frequencies? FSK ASK Continuous wave All the above None Hint 28). FSK is abbreviated as __________. Frequency shift keying Frequency side keying Forward shift keying All the above None Hint 29). ASK is abbreviated as _______. Amplitude shift keying Ample shift keying Altitude shift keying None of the above None Hint Read more about Amplitude Shift Keying. 30). When was mobile communication introduced? 1983 1999 1998 1967 None Hint 31). Who firstly introduced mobile communication? Motorola LG Samsung None of the above None Hint 32). Mobile communication technology is built with ________. Protocols Speed Services All the above None Hint 33). _______ is responsible for the evolution of mobile communication generation. Modification Replacements Fixing None of the above None Hint 34). Which of the following are the technologies used in mobile communications? 1G 2G 3G All the above None Hint 35). Mobile communication technology used in 2021 is _______. 4G 3G 5G Both a and c None Hint 36). Which of the following is 1st generation of wireless mobile communication technology? 1G 2G 3G 5G None Hint 37). 1G uses _______ type of signals to communicate data. Digital Analog Discrete None of the above None Hint 38). 1G was introduced in _______ year. 1980 1988 1990 1967 None Hint 39). 1G supports _______ type of mobile communication. Voice Audio Video Both a and b None Hint 40). 1G was introduced by_______ country. India US Germany China None Hint Mobile Communication MCQs for Interviews 41). 1G has the speed of _________. 2.4 kbps 3 kbps 4 kbps 5 kbps None Hint 42). Which of the following are the feature of 1G? Poor quality of voice Less secure Power consumption is more All the above None Hint 43). _______ is a second-generation technology. 2G 3G 4G 5G None Hint 44). 2G technology uses _______ signals. Analogue Digital Continuous None of the above None Hint 45). 2G technology was released by ________ country. Germany Finland French China None Hint 46). 2G technology was released by Finland in _______ year. 1991 1990 1992 1994 None Hint 47). 2G mobile communication uses ________ technology. GSM Wifi GPRS Both a and c None Hint 48). 2G mobile communication operates up to _______ speed. 64 kbps 50 kbps 60 kbps 40 kbps None Hint 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 None Hint 50). Is GPRS technology introduced along with 2G mobile communication technology? Yes No Maybe None Hint 51). Which of the following are the features supported by GPRS in 2G technology? Emails Web browsing Downloads All the above None Hint 52). 2G technology with GPRS is also called as _________. 2.5 G 3G 4G 5G None Hint 53). Third-generation mobile communication technology is represented as _______. 3G 3.4 G 4G 2G None Hint 54). Which of the following are the 3G mobile communication features? High internet speed High data speed 3D gaming All the above None Hint 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 None Hint 56). Which of the following are web-based applications used by 3G? Video conference Emails Multimedia All the above None Hint 57). Which of the following are the disadvantages of 3G technology? Costly mobile devices Requires high infrastructure High maintenance cost All the above None Hint 58). The next generation of 3G is ________. 3.2G 3.5G 3.6G 4G None Hint 59). Mobile is also called as _________. Cell phone Handphone Mobile cellular network All the above None Hint 60). GPS stands for _________. Global positioning systems Global partial system Geo-positioning system All the above None Hint 61). The function of GPS is ________. Navigates to correct address on earth Locates address on earth Points address All the above None Hint 62). Which of the following are the components of GPS? Satellites Ground stations Transmitter and receiver All the above None Hint 63). GPRS stands for ________. General packet radio receiver Geo packet radio receiver Gradient packet radio receiver None of the above None Hint 64). GPRS is used in ________ mobile technology. 2G 3G 4G Both a and b None Hint 65). ______ has led to the growth of mobile communication services. Increase in battery consumption Increase in IC technology Increase in DSP All the above None Hint 66). In cellular network frequency spectrum are divided into _________. Discrete channels Non-discrete channel Class of frequency None of the above None Hint 67). _______ are added to geographic cells of a specific area. Discrete channels Non-discrete channel Class of frequency None of the above None Hint 68). Analog cellular phone is ______ generation technology. 1G 2G 3G 4G None Hint 69). Digital cellular phone is ______ generation technology. 1G 2G 3G 4G None Hint 70). AMPS stands for ________. Advanced mobile telephony system Advanced medium telephony system Automobile telephony system None of the above None Hint 71). 1G technology was developed based on ______. Advanced mobile telephony system Advanced medium telephony system Automobile telephony system None of the above None Hint 72). AMPS is a _______ service. Standard cellular telephone service Cellular telephone service Standard cellular service None of the above None Hint 73). AMPS in 1G was introduced by ________. Illinois Bell Richard Charles Dennis None Hint 74). Analogue cellular phone has a maximum deviation of the frequency of ______ for 100% modulation. +/- 12 KHz +/- 11 KHz +/- 10 KHz +/- 9 KHz None Hint 75). AMPS uses _______ modulation technique. Frequency division multiple access Phase modulation Amplitude modulation All the above None Hint 76). Does AMPS separate transmissions in frequency domain? Yes No Maybe None Hint 77). Subscribers in an analog cellular phone are assigned _______ for mobile call purpose. Voice channels Audio channels Video channels Both a and b None Hint 78). Which of the following is the process performed at receiver end in mobile communication? Modulation Decoding Demodulation Both b and c None Hint 79). Audio channels are also called as ________. Voice channels Image channels Video channels Both a and b None Hint 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 None Hint Mobile Communication Exam Questions & Answers 81). Which of the following are analog cellular phones, audio channels for mobile call purpose? Forward Reverse One way Both a and b None Hint 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 None Hint 83). Wireless communication uses _______ method. Multiplexing Quantizing Equalizing None of the above None Hint Read more about Multiplexing. 84). Wireless communication uses ______ number of Multiplexing methods. 2 3 4 5 None Hint 85). Which of the following are multiplexing methods used in mobile communication? TDMA FDMA CDMA All the above None Hint 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 None Hint 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 None Hint 88). _______ multiplexing technique allows user to share traffic channels. TDMA FDMA CDMA All the above None Hint 89). The process where users share available spectrum in the frequency band is called _________. Traffic channel Congestion channel Noise Disturbance None Hint 90). In which multiplexing technique, different users are assigned with the different channels. TDMA FDMA CDMA All the above None Hint 91). _______ cellular systems use FDMA type system. Digital Analog Both a and b Discrete None Hint 92). Which of the following is a multicellular transmission type technique? FDMA OFDM CDMA TDMA None Hint 93). OFDMA stands for ________. Orthogonal frequency division multiplexing Original frequency division multiplexing Orthogonal frequency derived multiplexing Orthogonal frequency-division mutant None Hint 94). OFDMA was introduced by _______. Robert W Williams Richard Charles None Hint 95). OFDMA was introduced by Robert W in ________ year. 1966 1967 1965 1999 None Hint 96). Is OFDM a FDMA technique? Yes No Maybe None Hint 97). OFDMA was incorporated into _______ standard. Wireless network Wired network Cable network All the above None Hint 98). In OFDMA, data stream are carried by multiple _____ rate subcarrier type tones. High Low Zero Infinite None Hint 99). Does OFDMA overcomes hostile frequency selective type fading? Yes No Maybe None Hint 100). OFDMA combines benefits of ______ techniques. Coherent detection OFDM modulation OFDM demodulation Both a and b None Hint 101). OFDM technique reduces electrical BW using ______. Up-down conversion Frequency conversion Increasing frequency bandwidth None of the above None Hint 102). OFDM is suitable for _______ speed circuit design. High Low Medium Zero None Hint 103). OFDM uses _____ mathematical techniques for processing signal. FFT IFFT DFT Both a and b None Hint 104). FFT stands for ________. Fast Fourier Transform Fast Forward Transform Fast Fourier Turn None of the above None Hint 105). Which of the following are 1G mobile systems? NMT 450 AMPS TACS All the above None Hint 106). NMT 450 was released in _______ year. 1981 1982 1985 1986 None Hint 107). AMPS was released in _______ year. 1981 1982 1985 1986 None Hint 108). TACS was released in _______ year. 1981 1982 1985 1986 None Hint 109). NMT 900 was released in _______ year. 1981 1982 1985 1986 None Hint 110). In NMT 400 or 900, NMT stands for ______. Nordic Mobile Northern Mobile Nordic Mic None of the above None Hint 111). TACS stands for ________. Total Access Communication System Total Allocate Communication System Total Access Conduct System None of the above None Hint 112). Which of the following are the disadvantages of 1G? Analog Not robust Incompatible standards All the above None Hint 113). Which of the following are the advantages of 2G? Advanced modulation techniques Reduce in overhead Includes services such as SMS All the above None Hint 114). Which of the following are 2G technologies? DAMPS GSM JDC All the above None Hint 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 None Hint 116). DAMPS 2G technology was used in _______ country. North America European Japan UK None Hint 117). GSM 2G technology was used by ______. North America European Japan UK None Hint 118). JDC 2G technology stands for ________. Japanese Digital Cellular Japanese Data Cellular Japanese Digital Cite None of the above None Hint 119). JDC 2G technology is used by _______ country. North America European Japan UK None Hint 120). CT-2 of 2G technology stands for ________. Cordless Telephones-2 Cordless Telegraph-2 Cord Telephones-2 None of the above None Hint Mobile Communication Important Questions for Interviews 121). CT-2 of 2G technology is used in ________ country. North America European Japan UK None Hint 122). GSM uses ________ number of frequency range. 3 4 5 6 None Hint 123). GSM is implemented using 4 frequency ranges and ______ number of multiplexing techniques. 3 4 5 6 None Hint 124). Which of the following are the multiplexing techniques used in GSM? FDMA TDMA FDD All the above None Hint 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 None Hint 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 None Hint 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 None Hint 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 None Hint 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 None Hint 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 None Hint 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 None Hint 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 None Hint 133). The cellular approach in mobile radio is used when frequency resource is _______. Limited Zero Maximum Minimum None Hint 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 None Hint 135). A cell can cover _______ number of mobile subscribers. Multiple Limited Numerous Zero None Hint 136). Which of the following are the components of a cell? Base station RF channels Transmitter and receiver Both a and b None Hint 137). Is the frequency within a cell is simultaneously utilized by other cells at a geographical distance? Yes No Maybe None Hint 138). A 7 cell type pattern divides frequency resources into ______ number of parts. 5 6 7 3 None Hint 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 None Hint 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 None Hint 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 None Hint 142). A cell is available in which of the following shapes? Hexagon Square Triangle All the above None Hint 143). A hexagon shape covers a specific area using ______ cells. Few Many Single Two None Hint 144). A hexagonal cell has a minimum number of _______. Base stations Capital investments Both a and b Transmitter None Hint 145). Can other shapes such as triangle, circle, or square type cell provide efficient coverage compared to hexagon cell shape? Yes No Maybe None Hint 146). Do radio signals depend on environmental conditions? Yes No Maybe None Hint 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 None Hint 148). The variation of signal attenuation with respect to different parameters is called ______. Fading Distortion Disturbance Noise None Hint 149). Fading is a _________ process. Random Continuous Discontinuous None of the above None Hint 150). Fading is of _______ types. 3 4 5 6 None Hint 151). Which of the following are the advantages of mobile communication? Location-independent Wireless communication Operates at higher speed All the above None Hint 152). Which of the following are the disadvantages of mobile communication? Workflow disruption Requires effective monitoring Security breach All the above None Hint 153). What is the value of RF signal propagation in free space? 2 3 4 5 None Hint 154). RF signal propagation constant with value 2 is applied for ______ systems. Static radio Dynamic radio Both a and b None of the above None Hint 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 None Hint 156). LOS in mobile communication is abbreviated as ________. Line Of Sight Light of Sight Linear Of Sight Loss of Sight None Hint 157). _______ propagation of RF waves occurs due to reflection of RF energy from obstacles. Multipath Unidirectional Bi-directional All the above None Hint 158). Reflection of waves generally occurs from ________. Walls Hill Objects All the above None Hint 159). Do reflected waves undergo phase change? Yes No Maybe None Hint 160). At what degrees of phase do reflect waves cancel out each other? 90 120 180 260 None Hint Mobile Communication MCQs With Answers 161). When a signal cancels out, does its signal strength reduce? Yes No Maybe None Hint 162). Multipath propagation property in mobile communication leads to ________. Inter symbol interface Pulse widening Both a and b Signal discarding None Hint 163). _______ type of fading in mobile communication is caused due to multipath reception. Rayleigh fading Shadow fading Block fading Selective fading None Hint 164). ________ cause changes in the frequency of the received RF type signal. Mobility of subscriber Mobile phone usage Turning of signal All the above None Hint 165). Which of the following are the counter techniques for solving frequency distortion of an RF signal? Channel coding Interleaving Equalization All the above None Hint 166). Which of the following are the advantages of sectoring? Decreases co-channel interference Increases systems capacity Increases noise Both a and b None Hint 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 None Hint 168). Do mobile units when travels through a path cross different cells? Yes No Maybe None Hint 169). Mobile unit traveling through different cells enters different frequency allows the control taken by ______. Base stations Antenna Servers All the above None Hint 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 None Hint 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 None Hint 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 None Hint 173). Which of the following are the countermeasures for an imperfect filter? Isolating RF channel Reducing distance Improving SNR ration All the above None Hint 174). It is not possible to separate RF frequencies when the value of the reuse factor is ______. Small Large Infinite Zero None Hint 175). _______ is used for accommodating multiple users within a limited radio spectrum. Trunking Fading Multiplexing Both a and b None Hint 176). GOS in mobile communication stands for _______. Grade of Service Grade of Site General out Sourcing None of the above None Hint 177). The condition where all the channels are engaged is called _______. Grade of Service Trunking Fading None of the above None Hint 178). Cellular-based designers estimate _______ to allocate RF number of channels to meet GOS. Cost Capacity SNR All the above None Hint 179). ________ is required to calculate GOS value. ERLANG B table LOG table Anti Log Table All the above None Hint 180). The advantage of cell splitting is ________. Improves capacity Reduces transmission power Adds noise Both a and b None Hint 181). GSM network in mobile communication has _______ number of systems. 2 3 4 5 None Hint 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 None Hint 183). Switching system is also named _______. Network and Switching Systems Networking systems Service systems All the above None Hint 184). NSS in mobile networking systems is abbreviated as _________. Network and Switching Systems Networking Systems Switch Network Software System All the above None Hint 185). Which of the following is the function of NSS? Processes calls Processes subscriber related functions Deactivates network Both a and b None Hint 186). Which of the following are the functional units of NSS? Mobile switching center Visitor location register Home location register All the above None Hint 187). Mobile switching center interfaces with ________ to operate. PSTN MSC Other mobile switching centers All the above None Hint 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 None Hint 189). MSC is abbreviated as ________. Mobile Switching Centers Mobile Setup Centers Movement Switching Centers All the above None Hint 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 None Hint 191). IMSI is abbreviated as ___________. International Mobile Sub Identity Internet Mobile Sub Identity International Mobile Side Identity None of the above None Hint 192). HLR is abbreviated as __________. Home Location Register Hide Location Register Home Location Relay None of the above None Hint 193). Visitor location register is integrated with ________. MSC HLR ISDN All the above None Hint 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 None Hint 195). IMEI stands for _________. International Mobile Equipment Identity Inter Mobile Equipment Identity International Movable Equipment Identity None of the above None Hint 196). Authentication center is related to ________. HLR VLR MSC None of the above None Hint 197). Authentication center provides _______ for each mobile subscriber. Authentication keys (Ki) Information Messages All the above None Hint 198). The authentication key provided by the authentication center generates ______. RAND SRES Cipher key All the above None Hint 199). Which of the following is the function of SRES in the authentication key? Authenticates mobile Authenticates IMSI Secures messages All the above None Hint 200). Which of the following are the functions of the cipher key? Encrypts communication Transmits communication Authenticates IMSI All the above None Hint 201). Which of the following are the functions of the operation and maintenance center? Installs software Manages traffic Traces subscriber All the above None Hint 202). Which of the following are the components of a base station? Base trans receiver station Base station controller Antenna Both a and b None Hint 203). Which of the following are the components of mobile stations? SIM Mobile equipment’s Base station Both a and b None Hint 204). SIM is abbreviated as _________. Subscriber Identity Module Subscriber Idea Module Subscriber Identity Mode None of the above None Hint 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 None Hint 206). European GSM system categorizes mobile telephones into ______ number of units. 3 4 5 6 None Hint 207). Which of the following are other network elements of mobile communication? SMS service centers Voice mailbox SMS flow All the above None Hint 208). Rayleigh fading is also called as ___________. Macroscopic variation Microscopic variation Signal variation None of the above None Hint 209). Which of the following are the processes used while communicating information over radio link? Coding Modulation Interference Both a and b None Hint 210). Which of the following is the process performed transmitter end in mobile communication? Modulation Coding Demodulation Both a and b None Hint Time's up
