GSM Questions and Answers March 9, 2021 By WatElectronics This article lists 100 GSM MCQs for engineering students. All the GSM Questions & Answers given below include a solution and where a possible link to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on the GSM topic which is core in Electronics & Communication Engineering. GSM is the protocol introduced by the European Telecommunications Standards Institute (ETSI). It is a circuit-switching network that offers full-duplex voice communication over telephony. Firstly, the data is used to transfer through circuit switching. Later improvements in the field of communication made it possible to transfer the data by converting it in the form of packets through General Packet Radio Service (GPRS) & by Enhanced Data Rates for GSM Evolution (EDGE). The Cellular networks used in devices like tablets and mobile phones follow GSM protocols. GSM accepts, digitizes the data and after compressing the data is sent down to a channel. 1). The first generation cellular systems provide ___________ services for communication. Analog Digital Hybrid All the above Hint 2). 1G technology uses _______ for the division of channels. TDMA FDMA CDMA SDMA Hint 3). ____________ is a cellular system uses FDMA and follows analog medium for communication. GSM AMPS D-AMPS None of the above Hint 4). Cellular services utilizes ________ transmitters. High power Ultra-high power Low power Both low and high power Hint 5). GSM is a secure _______ system. Wired Wireless Simple Complex Hint 6). Firstly GSM was deployed in _________. Finland Russia Norway Sweden Hint 7). The standard for GSM was developed by ____________. Telecommunications Industry Association (TIA) International Telecommunications Union (ITU) European Telecommunications Standards Institute (ETSI) None of the above Hint 8). In which year the frequency standard band for the GSM network was extended from 900 MHz to the 1800 MHz? 1990 1991 1992 1993 Hint 9). The first person to make call on network of GSM was ________. Pehr Evind Svinhufvud Paavo Lipponen Harri Holkeri Juha Sipila Hint 10). The first call of GSM was made on the ________ network. Alcom DNA Telia Radiolinja Hint 11). First network operator of mobile to shut down GSM is ________. Alcom Elisa Telstra DNA Hint 12). The second network operator to shut GSM is __________. Alcom Elisa Telstra AT & T Hint 13). GSM in Asia and Europe is operated at __________ MHz band of frequency. 800 900 1000 1100 Hint 14). In United States GSM is operated at _______ MHz frequency band. 850 1900 Both a and b None of the above Hint 15). The separation of carrier in GSM 2G technologies is __________. 20 KHz 30 KHz 200 KHz 300 KHz Hint 16). Which windowing technique is used by the GSM codec for coding speech? Blackman Window Welch Window Cosine Window Hamming Window Hint 17). Which filter is used at the decoder of GSM to pass the received signal? LTP filter STP filter Quantizer PLL Hint 18). The cryptography algorithms used in GSM are__________. A5/1 A5/2 A5/3 All the above Hint 19). How many different types of cell sizes present in the GSM network? 3 4 5 6 Hint 20). The type of cell in which the height of antenna is above the average level of roof top is ______. Macro cell Micro cell Pico cell Umbrella cell Hint 21). In the GSM system the type of cell whose antenna height is under the average level of roof top is ______. Umbrella cell Femto cell Pico cell Micro cell Hint 22). The type of cell sizes preferred in the urban locations is ________. Femto cells Pico cells Micro cells Macro cells Hint 23). A _________ is a cell in the network of mobile phones which provides radio coverage from the cell site with high power. Femto cell Pico cell Micro cell Macro cell Hint 24). The type of cell sizes preferred for the indoor locations is _________. Femto cells Pico cells Micro cells Macro cells Hint 25). The connection between the service providers through a broadband is made possible by ______ cells. Femto cells Pico cells Micro cells Macro cells Hint GSM Interview Questions & Answers 26). In practical the longest distance supported by the GSM system is ______ (Kilo meters). 25 35 45 55 Hint 27). SIM in the GSM network stands for _______. Subscriber Identity Module Subscriber Investigation Mobile Subscriber Identification Mobile Smart Identification Module Hint 28). Other than GSM _______ provides a great security with the key for longer authentication amid user and the network. SIM USIM UMTS FPGAs Hint 29). SIM card is protected by using _________. Personal Identification Number (PIN) Mobile Identification Number (MIN) International Mobile Subscriber Identity (IMSI) Mobile Subscription Identification Number (MSIN) Hint 30). A PIN used to protect SIM card has _____ digits. 3 4 5 6 Hint 31). Mobility management and the call out functions for the mobile phone roaming are carried out by __________. Base Station Subsystem Network Switching Subsystem (NSS) GPRS Core Network Operations Support System Hint 32). ________ used by the service providers of telecommunications to manage networks. Base Station Subsystem Network Switching Subsystem GPRS Core Network Operations Support System (OSS) Hint 33). In GSM system customer care service is a part of __________. Base Station Subsystem Network Switching Subsystem GPRS Core Network Operations Support System Hint 34). The voice codec used in GSM follows a system of _________. Huffman coding Linear Predictive coding Line coding Cryptographic coding Hint 35). The frequency in the GSM is selected by the operator. Further it is divided into ________. Frame Packet Timeslots Bits Hint 36). GSM system consists of eight ________ speech channels for each radio frequency. Full rate Duplex Half rate Full duplex Hint 37). GSM system consists of sixteen ________ speech channels for each radio frequency. Full rate Duplex Half rate Full duplex Hint 38). The timeslots in the GSM are grouped to form a _______ frame. CDMA TDMA OFDMA SDMA Hint 39). The duration of the frame of GSM carrier frequencies is ________ (ms). 3.615 3.626 4.515 4.615 Hint 40). The user in the GSM system can change the operator by changing the _____. Mobile SIM Network Battery Hint 41). USIM is introduced due to the development of _______. SIM Cipher text UMTS EDGE Hint 42). USIM stands for _____________. Universal Subscriber Identity Module Universal Subscriber Investigation Mobile Universal Smart Identification Module Universal Smart Investigation Mobile Hint 43). Mobile phones with GSM are ______ and ______ carriers. Unlocked, switched Locked, switched Unlocked, protected Switched, protected Hint 44). SIM cards can be used on ________ phones. CDMA GSM Both CDMA and GSM WCDMA Hint 45). GSM is a cellular network with a group of cell in it known as ____________. Node Cluster Bridge Hub Hint 46). GSM offers services like _________. voice Data Roaming All the above Hint 47). The traffic amid mobile phone and the NSS is handled by __________. Base Station Subsystem Network Switching Subsystem GPRS Core Network Operations Support System (OSS) Hint 48). A GSM network is based upon _________ channels of traffic. Connection less Connection oriented Circuit switched Packet switched Hint 49). In the GSM network ___________ allows the user to alternate amid data and speech among the same conversation. Message center Mobile service node Gateway Mobile Services Switching Center GSM interworking unit (GIWU) Hint 50). Each cell in the GSM network is identified by the __________ number designated to it. Integrated circuit card ID (ICCID) International Mobile subscriber Identity (IMSI) International Mobile Equipment Identity (IMEI) Cell Global Identity (CGI) Hint GSM Exam Question & Answers 51). Cell phones during manufacturing possess ________ number that will be permanent and unique. Integrated circuit card ID (ICCID) International Mobile subscriber Identity (IMSI) International Mobile Equipment Identity (IMEI) Cell Global Identity (CGI) Hint 52). Location area is a group of _____ in wireless communication. Cells MSCs Mobile phones Batteries Hint 53). Which of these doesn’t come under the category of telephone services and are not supported by GSM? Voice mail Fax mail Call waiting Dual-tone multi frequency (DTMF) Hint 54). ___________ in the GSM network the database required for managing and storing the subscriptions. Home Location Register (HLR) Visitor Location Register (VLR) Authentication Center (AUC) Equipment Identity Register (EIR) Hint 55). The permanent data of the subscriber is stored in _______. Home Location Register (HLR) Visitor Location Register (VLR) Authentication Center (AUC) Equipment Identity Register (EIR) Hint 56). When the subscription is bought from the PCS operators the subscribers registered in _______ of the operator. Visitor Location Register (VLR) Home Location Register (HLR) Authentication Center (AUC) Equipment Identity Register (EIR) Hint 57). _________ is always attached with MSC. Visitor Location Register (VLR) Home Location Register (HLR) Authentication Center (AUC) Equipment Identity Register (EIR) Hint 58). ____________ stores the data about subscribers temporarily. Visitor Location Register (VLR) Equipment Identity Register (EIR) Authentication Center (AUC) Home Location Register (HLR) Hint 59). __________ protects the operators from the frauds occur in this world of cellular technology. Visitor Location Register (VLR) Home Location Register (HLR) Authentication Center (AUC) Equipment Identity Register (EIR) Hint 60). _________ and _________ are either enforced as free-standing nodes or forms a combine node. VLR and HLR HLR and AUC AUC and VLR AUC and EIR Hint 61). A Base Station System (BSS) consists of __________. Base Station Controllers (BSCs) Base Transceiver Stations (BTSs) Both a and b None of the above Hint 62). A group formed by BTSs is controlled by a ________. MSC BSC AUC Mobile phone Hint 63). The maximum transceivers handled by BTS are ________. 4 8 16 32 Hint 64). In telecommunications OMC stands for ___________. Operations and Maintenance Center Open Method of Coordination Operational Method for Coordination None of the Above Hint 65). OSS stands for __________. Open-Source Software Open Source System Operator services System Operation and Support System Hint 66). ___________ is a node that interconnects two networks. Exclusion Expulsion Gateway Departure Hint 67). GMSC stands for _________. Gateway Mobile Switching Center Gateway Mobile Service Center Global Mobile Satellite Communication Global Mobile Service Center Hint 68). ____________ is known as controlling center of NSS. Base Station Subsystem Operations Support System GPRS Core Network Mobile Switching Center (MSC) Hint 69). In GSM the area under a single transmitter is known as ________. Gateway Node Cell Hexagon Hint 70). __________ node provides intelligent services of network. Message center (MXE) Mobile Service Node (MSN) Gateway Mobile Services Switching Center GSM interworking unit (GIWU) Hint 71). The traffic in between of mobile phone and the NSS is handled by _________. Base Station Subsystem (BSS) Network Switching Subsystem GPRS Core Network Operations Support System (OSS) Hint 72). ___________ is referred to as the core network part of GSM. Base Station Subsystem (BSS) Network Switching Subsystem (NSS) GPRS Core Network Operations Support System (OSS) Hint 73). GSM operators possess _____ agreements with the operators in the foreign countries. Voice mail Fax mail Call waiting Roaming Hint 74). To make processor or any other computer to communicate with a network ________ device is used. GSM Modem Repeaters Bridges SIM Hint 75). In the GSM network GPRS is a part present in ____________. BTS BSS NSS HLR Hint GSM MCQs with Answers 76). A BTS commonly in public is referred to as __________. Gateway Node Cell Mobile Tower Hint 77). GSM facilitates the cell phones to connect to a network by searching _________. Cells Cryptographic Algorithms Both a & b None of the above Hint 78). The list of queries a subscriber made is charged by the network can be defined as _________. Call barring Calling number identification Closed User Group (CUG) Advice of Charge (AoC) Hint 79). ____________ service is used by the network providers to recover the dues. Call barring Calling number identification Call conferencing Advice of Charge Hint 80). Which service is not extra charged by the service providers? Call barring Calling number identification Call conferencing Advice of Charge Hint 81). If the calls are made to specified subscribers in a group and based on that special concession is provided to the users. This terminology is referred to as _________. Call barring Calling number identification Closed User Group (CUG) Advice of Charge (AoC) Hint 82). The charges in the GPRS service depends upon per ___________ data uploaded or downloaded. Kilo Byte Mega Byte Giga Byte Tera Byte Hint 83). TMSI stands for _____________. Temporary Mobile Servicing Industry Temporary Mobile Subscriber Identity Terminal Mobile Subscription Identification Temporary Mobile Service Identification Hint 84). How many nodes were introduced to the existing core network of GSM? One Two Three Four Hint 85). Data transmission in GSM is done through ________. Voice mail EDGE GPRS UMTS Hint 86). ___________ service in GSM utilizes the spectrum on need. UDI UMTS GPRS None of the Above Hint 87). A _____ node is the supporting node for GPRS in GSM. GSN GGSN SGSN All the Above Hint 88). The node variants of GSN in GPRS are ___________. GGSN SGSN Both a & b None of the above Hint 89). In GPRS the ciphering is performed between MS and ___________. GGSN SGSN Both a & b BTS Hint 90). GPRS transfers the data in ______ format. Bits Packet Frame Segment Hint 91). EDGE service belongs to__________ generation. 1G 2G 2.5G 3G Hint 92). Due to interference or some other reasons if it is necessary to make a change in the slot or the frequency utilized by a user results in handover. This type of the handover in GSM is known as ________. Intra-BTS handover Inter-BTS Intra BSC handover Inter-BSC handover Inter MSC handover Hint 93). The handoff occurred when the cell phone moves out from the coverage offered by one of the BTS to another one but the BSC shared for both BTS is the same known as________. Intra-BTS handover Inter-BSC handover Inter-BTS Intra BSC handover Inter MSC handover Hint 94). ___________ handover is under the control of MSC. Intra-BTS handover Inter-BTS Intra BSC handover Inter-BSC handover Inter MSC handover Hint 95). The handover occurred due to the change in between the networks is ________. Intra-BTS handover Inter-BTS Intra BSC handover Inter-BSC handover Inter MSC handover Hint 96). The handovers occurred in between various accessing radio technologies is ___________. Intra-BTS handover Inter-BTS Intra BSC handover Inter-BSC handover Inter-system handover Hint 97). The base station handovers cell phone with the details of the new cell without providing any synchronization and linking results in ________handover. Inter-system handover Inter MSC handover Blind handover Compressed mode handover Hint 98). __________ handover utilizes the list of neighboring base stations to select a suitable one. Inter-system handover Inter MSC handover Blind handover Compressed mode handover Hint 99). In which handover mobile transmits the bursts on the latest channel to access the new base station? Inter-system handover Inter MSC handover Blind handover Non-Synchronized handover Hint 100). MSC in which the handover gets initiated is known as ______. Gateway MSC Visited MSC Anchor MSC None of the above Hint Read More about GSM Time is Up! Time's up
