Telecommunication and Switching Systems Question & AnswersJuly 5, 2021 By WatElectronics This article lists 100 Telecommunication and Switching Systems MCQs for engineering students. All the Telecommunication and Switching Systems Questions & Answers given below includes solution and link wherever possible to the relevant topic.Telecommunication implies communication between two points separated by a distance. It includes all types of techniques such as radio, telegraphy, telephony, television, data communication, and computer networking. We can define telecommunications as communicating information such as data, text, pictures, voice, audio, and video over long distances. The medium for such a signal transmission can be through electrical wire or cable, it could be an optical fiber, electromagnetic fields, and so on. If the communication is using the free space by means of electromagnetic waves then it is called wireless. 1). The switching systems are categorized into ____________OneTwoThreeFourHintThe switching systems are categorized into two types they are automatic and manual 2). The switching methods are of ____________OneTwoThreeFourHintThe switching methods are of three types they are circuit, message, and packet switching methods 3). The blocking cannot occur in ______ switchingCircuitPacketBoth a and bNone of the aboveHintThe blocking cannot occur in packet switching 4). The telecommunication network consists of ________SwitchingTransmissionStationsAll of the aboveHintThe telecommunication network consists of switching and transmission systems and stations 5). What is the standard form of PSTN?Public Switched Telecommunication NetworkPublic Switched Telecommunication NetworkPublic Switched Telecommunication NetworkNone of the aboveHintThe Full form of PSTN is Public Switched Telecommunication Network 6). The electromechanical switching systems categorized into ____________OneTwoThreeFourHintThe electromechanical switching systems categorized into two types they are strowger and cross over 7). The automatic switching systems categorized into ____________OneTwoThreeFourHintThe automatic switching systems categorized into two types they are electromechanical and electronic 8). The PSTN consists of ___________ networkLocalJunctionToll or trunkAll of the aboveHintThe PSTN consists of local, junction, toll, or trunk networks 9). What are the elements of a telecommunication network?Transmission systemSwitching systemSignaling systemAll of the aboveHintThe transmission system, switching system, signaling system are the elements of a telecommunication network 10). What is the standard form of PDN?Private Data NetworkPublic Data NetworkPrivate Service Data NetworkNone of the aboveHintThe standard form of PDN is Public Data Network 11). __________ are the components of private branch exchangeCommon control, switching matrixTrunks, terminalsBoth a and bNone of the aboveHintThe common control, switching matrix, trunks, terminals are the components of private branch exchange 12). The electronic switching system categorized into ____________OneTwoThreeFourHintThe electronic switching system categorized into two types they are space division switching and time division switching 13). The time switching systems are categorized into ________OneTwoThreeFourHintThe time switching systems are categorized into two types they are digital and analog 14). What is the standard form of SPC?Stored Program ControlSimple Program ControlSwitching Program ControlNone of the aboveHintThe standard form of SPC is Stored Program Control 15). What are the advantages of stored program control?Easy to controlEasy to maintainFlexibleAll of the aboveHintThe stored program control is easy to control and maintain and it is flexible 16). __________ are the transmission systemsRadioCoaxial cableOpticalAll of the aboveHintThe radio, coaxial cable, optical are the transmission systems 17). _______ are the routing methodsRight through routingComputer-controlled routingOwn exchange routingAll of the aboveHintThe right through, computer-controlled, and own exchange routings are the routing methods 18). __________ are the basic functional elements of stored program control switching systemsSwitching matrixCall store, program storeCentral processorAll of the aboveHintThe switching matrix, call store, program store, central processor are the basic functional elements of stored program control switching systems 19). The digital switching systems are categorized into ________OneTwoThreeFourHintThe digital switching systems are categorized into three types they are space switch, time switch, and combinational switch 20). The call processing system basic functions are _________Call identification and call routing, call statusPath setup between subscribersBilling, digital translationAll of the aboveHintThe call processing system basic functions are call identification and call routing, call status, path setup between subscribers, billing, and digital translation 21). What is the standard form of SVC?Switched Virtual CircuitSimple Virtual CircuitSwitched Virtual ControlNone of the aboveHintThe standard form of SVC is Switched Virtual Circuit 22). What is the standard form of PVC?Permanent Virtual CircuitPacket Virtual CircuitPrivate Virtual CircuitNone of the aboveHintThe standard form of PVC is Permanent Virtual Circuit 23). What is the standard form of ISDN?Internet Services Digital NetworkIntegrated Services Digital NetworkInternet Digital NetworkNone of the aboveHintThe standard form of ISDN is Integrated Services Digital Network 24). The switching system provides __________ signalingSubscriber loopInterexchangeBoth a and bNone of the aboveHintThe switching system provides subscriber loop, interexchange signalings 25). The switchboards are of __________OneTwoThreeFourHintThe switchboards are of two types they are single termination and multi termination switchboardsTelecommunication and Switching Systems MCQs for Exams 26). How many types of selectors are there in the stowger system?OneTwoThreeFourHintThere are two types of selectors are there in the stowger system they are uniselector and two motion selector 27). The ratio of switching capacity divided by the theoretical maximum load is known as ________Traffic handling capabilitySwitching capacityEquipment utilization factorNone of the aboveHintThe ratio of switching capacity divided by the theoretical maximum load is known as traffic handling capability 28). The ratio of switching capacity divided by cost per subscriber line is known as _____________Traffic handling capabilitySwitching capacityEquipment utilization factorCost capacity indexHintThe ratio of switching capacity divided by cost per subscriber line is known as the cost capacity index 29). The switching system application software divided into ______ classesOneTwoThreeFourHintThe switching system application software divided into three classes call processing, administrative, and maintenance software 30). Due to _______, the optical power loss occurs in the fiber optic systemConnector loss, splice lossFiber attenuationSource to fiber coupling lossesAll of the aboveHintDue to connector loss, splice loss, source to fiber coupling losses the optical power loss occurs in the fiber optic system 31). The fiber attenuation caused by __________AbsorptionScatteringRadiationAll of the aboveHintThe fiber attenuation caused by absorption, scattering, and radiation losses 32). The ratio of the reflected signal divided in incident signal is known as ____________Reflection coefficientIncident coefficientCost capacity indexNone of the aboveHintThe ratio of the reflected signal divided into the incident signal is known as the reflection coefficient 33). __________ are the main aspects in a local area networkMedium of transmissionTopologyAccess methodAll of the aboveHintThe medium of transmission, topology, access method are the main aspects of a local area network 34). The routing strategies are divided into ________OneTwoThreeFourHintThe routing strategies are divided into two types they are deterministic and stochastic 35). The bandwidth of telephone is between _____________300-3400Hz30-3400Hz3-3400Hz300-340HzHintThe bandwidth of the telephone is between 300-3400Hz 36). The bandwidth of music is between _____________500-3400Hz50Hz-16KHz6-3400Hz200-340HzHintThe bandwidth of music is between 50Hz-16KHz 37). The bandwidth of facsimile is _____________40KHz50Hz-16KHz6-3400Hz200-340HzHintThe bandwidth of facsimile is 40KHz 38). The ratio of uptime divided by SVM of uptime and downtime is known as __________AvailabilityIncident coefficientDeflection coefficientNone of the aboveHintThe ratio of uptime divided by SVM of uptime and downtime is known as availability 39). The bit rate of personal communication is __________300 to 9600 bits/sec30 to 9600 bits/sec500 to 9600 bits/sec900 to 9600 bits/secHintThe bit rate of personal communication is 300 to 9600 bits/sec 40). The bit rate of personal communication is __________2400 to 9600 bits/sec300 to 9600 bits/sec500 to 9600 bits/sec900 to 9600 bits/secHintThe bit rate of personal communication is 2400 to 9600 bits/sec 41). ________ are the important features of TST switchesLow blocking probabilityStage independenceBoth a and bNone of the aboveHintThe important features of TST switches are low blocking probability, stage independence, and implementation advantage 42). What is the standard form of ESS?Electrical Switching SystemElectronic Switching SystemEmbedded Switching SystemNone of the aboveHintThe standard form of ESS is Electronic Switching System 43). The electronic switching system consists of __________Programming capabilityMemoryAn external rapid switching componentAll of the aboveHintThe electronic switching system consists of programming capability, memory, an external rapid switching component 44). The bit rate of the digital voice phone call is ______24 to 96 bits/sec30 to 96 bits/sec50 to 96 bits/sec6400 bits/secHintThe bit rate of the digital voice phone call is 6400 bits/sec 45). The bit rate of the digital audio is ______24 to 96 bits/sec30 to 96 bits/sec50 to 96 bits/sec1 to 2M bits/secHintThe bit rate of the digital audio is 1 to 2M bits/sec 46). What is the standard form of DSS?Digital Switching SystemData Switching SystemDigital Subscriber SystemNone of the aboveHintThe standard form of DSS is Digital Switching System 47). What is the standard form of DSSS?Digital Switching SystemData Switching SystemDigital Subscriber Switching SystemNone of the aboveHintThe standard form of DSSS is Digital Subscriber Switching System 48). The ratio of blocked busy hour calls divided by offered busy hour calls is known as _____________Grade of serviceIncident coefficientDeflection coefficientNone of the aboveHintThe ratio of blocked busy hour calls divided by offered busy hour calls is known as the grade of service 49). How many ways are there to create a virtual private network connection?OneTwoThreeFourHintThere are two ways to create a virtual private network connection they are by dialing an ISP, and by connecting directly to the internet 50). What is the standard form of IPsec?Internet Protocol SystemInternet Protocol SecurityInternet Protocol ServiceNone of the aboveHintThe standard form of IPsec is Internet Protocol SecurityTelecommunication and Switching Systems MCQs with Hints 51). The bit rate of compressed video is ____________2 to 10M bits/sec12 to 10M bits/sec1 to 10M bits/secHintThe bit rate of compressed video is 2 to 10M bits/sec 52). The bit rate of document imaging is ____________10 to 100M bits/sec12 to 10M bits/sec1 to 10M bits/sec9 to 10M bits/secHintThe bit rate of document imaging is 10 to 100M bits/sec 53). ________ network protocols used within virtual private network tunnelsIPsecPPTPL2TPAll of the aboveHintIPsec, PPTP, L2TP network protocols used within virtual private network tunnels 54). The advantages of outband signaling are ____________SimpleCheapCostlyBoth a and bHintThe outband signaling is simple and cheap 55). The voice frequency signaling are of ___________OneTwoThreeFourHintThe voice frequency signaling are of two types they are inband and outband signaling 56). The in-channel signaling categorized into _______OneTwoThreeFourHintThe in-channel signaling categorized into four types they are loop disconnect, voice frequency, PCM, and multi-frequency 57). The networks are of __________OneTwoThreeFourHintThe networks are of three types they are public switched, private, and hybrid network 58). The bit rate of the full-motion video is _______10 to 100M bits/sec12 to 10M bits/sec1 to 2G bits/sec9 to 10M bits/secHintThe bit rate of the full-motion video is 1 to 2G bits/sec 59). ____________ are the models of loss systemsLost calls heldLost calls returnedLost calls clearedAll of the aboveHintThe lost calls held, lost calls returned, lost calls cleared are the models of loss systems 60). The transmission of data is continuous in ________ switchingCircuitDatagram packetVirtual circuit packetNone of the aboveHintThe transmission of data is continuous in circuit switching 61). The call setup required in _______ switchingCircuitPacketBoth a and bNone of the aboveHintThe call setup required in circuit switching 62). In message switching the information type is _______BaudotMorseASCIIAll of the aboveHintIn message switching the information type is Baudot, morse, and ASCII 63). In packet switching the information type is _______BaudotMorseASCIIBianaryHintIn packet switching the information type is binary 64). ________ switching is suitable for bulk data transferCircuitPacketBoth a and bNone of the aboveHintThe circuit switching is suitable for bulk data transfer 65). The charge in circuit switching is based on _______DataTimeDistanceNone of the aboveHintThe charge in circuit switching is based on data 66). The charge in packet switching is based on _______DataTimeDistanceBoth b and cHintThe charge in packet switching is based on time and distance 67). The end terminal in message switching is ___________TeletypeTelegraphBoth a and bNone of the aboveHintThe end terminal in message switching is teletype and telegraph 68). The end terminal in circuit switching is ___________ModemTelephoneBoth a and bNone of the aboveHintThe end terminal in circuit switching is modem and telephone 69). The end terminal in packet switching is ___________ModemTelephoneComputerNone of the aboveHintThe end terminal in packet switching is the computer 70). In-circuit switching the congestion occurs _________At setup timeOn every packetBoth a and bNone of the aboveHintIn-circuit switching the congestion occurs at setup time Read more about Circut Switching 71). In which switching each packet follows the same route?CircuitPacketBoth a and bNone of the aboveHintIn-circuit switching each packet follows the same route 72). The bandwidth is fixed in ________ switchingCircuitPacketBoth a and bNone of the aboveHintThe bandwidth is fixed in circuit switching 73). In _________ switching the quality of service is difficultCircuitPacketBoth a and bNone of the aboveHintIn packet switching the quality of service is difficult 74). The resource reservation is difficult in __________ switchingCircuitPacketBoth a and bNone of the aboveHintThe resource reservation is difficult in packet switching 75). In-circuit switching ________ switches are usedSpace divisionTime divisionBoth a and bNone of the aboveHintIn-circuit switching space and time division switches are usedTelecommunication and Switching Systems MCQs for Quiz 76). An electromechanical switching system, ________ switches are operated electricallyMechanicalElectricalBoth a and bNone of the aboveHintAn electromechanical switching system, mechanical switches are operated electrically 77). For switching purposes ___________ are used in electronic switching systemsDiodesICsTransistorsAll of the aboveHintFor switching purposes diodes, ICs, transistors are used in electronic switching systems 78). The switching systems are categorized into _________OneTwoThreeFourHintThe switching systems are categorized into two types they are direct and indirect switching systems 79). How many types of selectors are there in the strowger switching system?OneTwoThreeFourHintThere are two types of selectors are there in the strowger switching systems they are uniselector and two motion selector 80). What is the standard form of DTMF?Dual Tone Multi-FrequencyDual Time Multi-FrequencyDirect Tone Multi-FrequencyNone of the aboveHintThe standard form of DTMF is Dual Tone Multi-Frequency 81). The numbering plans are of ___________OneTwoThreeFourHintThe numbering plans are of three types they are open, semi-open, and closed numbering plans 82). The out channel signaling is categorized into __________OneTwoThreeFourHintThe out channel signaling is categorized into two types they are associated and non-associated 83). How many nodes does common channel signaling consist of?OneTwoThreeFourHintThe common channel signaling consists of STP and SP nodes 84). What is the standard form of STP?Switching Transfer ProtocolSignaling Transfer PointsSignaling Transfer ProtocolNone of the aboveHintThe standard form of STP is Signaling Transfer Points 85). What is the standard form of SP?Switching ProtocolSignaling PointsSignaling ProtocolNone of the aboveHintThe standard form of SP is Signaling Points 86). The ISDN supports ________Database accessAudio and video conferencingElectronic fund transferAll of the aboveHintThe ISDN supports database access, audio and video conferencing, electronic fund transfer, etc 87). The ISDN is categorized into ___________OneTwoThreeFourHintThe ISDN is categorized into four types they are BRI, PRI, narrowband and broadband ISDN 88). What is the standard form of BRI?Bit Rate InterfaceBasic Rate InterfaceBasic Rate InternetNone of the aboveHintThe standard form of BRI is Basic Rate Interface 89). What is the standard form of PRI?Permanent Rate InterfacePrimary Rate InterfacePrivacy Rate InternetNone of the aboveHintThe standard form of PRI is Primary Rate Interface 90). What are the advantages of ISDN?Chances for errors is lessConnection is fasterHigher bandwidthAll of the aboveHintIn ISDN the connection is faster, it requires higher bandwidth, and the chances for errors is less 91). The signal may be a function of ____________Time, temperaturePosition, pressureDistanceAll of the aboveHintThe signal may be a function of time, temperature, position, pressure, distance, etc 92). How many types of channels are there?OneTwoThreeFourHintThe channels are of two types one is wired and the other one is wireless 93). _______ are the examples of wired channelsTwisted pairCoaxialAll of the aboveHintThe twisted pair, coaxial, fiber optics, etc are examples of the wired channels 94). _______ are the examples of the wireless channelAM musicFM musicTV broadcastAll of the aboveHintThe AM music, FM music, TV broadcast are examples of the wireless channelRead more about Wireless Communication 95). The bandwidth of speech is around _______1000Hz2000Hz3100Hz4000HzHintThe bandwidth of speech is around 3100Hz 96). The typical spectrum of human speech is of _________300Hz to 3400Hz100Hz to 3400Hz200Hz to 3400Hz23000Hz to 3400HzHintThe typical spectrum of human speech is of 300Hz to 3400Hz 97). _____________ are the desirable characteristics of the communication systemFast, accurate, secureScalableRoutable/switchableAll of the aboveHintThe communication system should be fast, accurate, secure, scalable, routable/switchable, etc 98). ________ are the examples of telecommunicationTelephone systemMobile cellular systemMicrowave radio systemsAll of the aboveHintThe telephone system, mobile cellular system, microwave radio systems, etc are examples of telecommunication 99). The communication is of __________ typesOneTwoThreeFourHintThere are three type of communications they are point to point, broadcast communication, and multiplex system 100). Which one is a type of telecom network?PSTNEnterprise networksBoth a and bNone of the aboveHintBoth PSTN and enterprise networks are types of telecom network Time is Up! Time's up
