Telecommunication and Switching Systems Question & Answers July 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. The digital switching systems are categorized into three types they are space switch, time switch, and combinational switch. The call processing system's basic functions are call identification and call routing, call status, path setup between subscribers, billing, and digital translation. There are three types of communications they are point to point, broadcast communication, and multiplex system. The telephone system, mobile cellular system, microwave radio systems, etc are examples of telecommunication. 1). The switching systems are categorized into ____________ One Two Three Four None Hint 2). The switching methods are of ____________ One Two Three Four None Hint 3). The blocking cannot occur in ______ switching Circuit Packet Both a and b None of the above None Hint 4). The telecommunication network consists of ________ Switching Transmission Stations All of the above None Hint 5). What is the standard form of PSTN? Public Switched Telecommunication Network Public Switched Telecommunication Network None of the above None Hint 6). The electromechanical switching systems categorized into ____________ One Two Three Four None Hint 7). The automatic switching systems categorized into ____________ One Two Three Four None Hint 8). The PSTN consists of ___________ network Local Junction Toll or trunk All of the above None Hint 9). What are the elements of a telecommunication network? Transmission system Switching system Signaling system All of the above None Hint 10). What is the standard form of PDN? Private Data Network Public Data Network Private Service Data Network None of the above None Hint 11). __________ are the components of private branch exchange Common control, switching matrix Trunks, terminals Both a and b None of the above None Hint 12). The electronic switching system categorized into ____________ One Two Three Four None Hint 13). The time switching systems are categorized into ________ One Two Three Four None Hint 14). What is the standard form of SPC? Stored Program Control Simple Program Control Switching Program Control None of the above None Hint 15). What are the advantages of stored program control? Easy to control Easy to maintain Flexible All of the above None Hint 16). __________ are the transmission systems Radio Coaxial cable Optical All of the above None Hint 17). _______ are the routing methods Right through routing Computer-controlled routing Own exchange routing All of the above None Hint 18). __________ are the basic functional elements of stored program control switching systems Switching matrix Call store, program store Central processor All of the above None Hint 19). The digital switching systems are categorized into ________ One Two Three Four None Hint 20). The call processing system basic functions are _________ Call identification and call routing, call status Path setup between subscribers Billing, digital translation All of the above None Hint 21). What is the standard form of SVC? Switched Virtual Circuit Simple Virtual Circuit Switched Virtual Control None of the above None Hint 22). What is the standard form of PVC? Permanent Virtual Circuit Packet Virtual Circuit Private Virtual Circuit None of the above None Hint 23). What is the standard form of ISDN? Internet Services Digital Network Integrated Services Digital Network Internet Digital Network None of the above None Hint 24). The switching system provides __________ signaling Subscriber loop Interexchange Both a and b None of the above None Hint 25). The switchboards are of __________ One Two Three Four None Hint Telecommunication and Switching Systems MCQs for Exams 26). How many types of selectors are there in the stowger system? One Two Three Four None Hint 27). The ratio of switching capacity divided by the theoretical maximum load is known as ________ Traffic handling capability Switching capacity Equipment utilization factor None of the above None Hint 28). The ratio of switching capacity divided by cost per subscriber line is known as _____________ Traffic handling capability Switching capacity Equipment utilization factor Cost capacity index None Hint 29). The switching system application software divided into ______ classes One Two Three Four None Hint 30). Due to _______, the optical power loss occurs in the fiber optic system Connector loss, splice loss Fiber attenuation Source to fiber coupling losses All of the above None Hint 31). The fiber attenuation caused by __________ Absorption Scattering Radiation All of the above None Hint 32). The ratio of the reflected signal divided in incident signal is known as ____________ Reflection coefficient Incident coefficient Cost capacity index None of the above None Hint 33). __________ are the main aspects in a local area network Medium of transmission Topology Access method All of the above None Hint 34). The routing strategies are divided into ________ One Two Three Four None Hint 35). The bandwidth of telephone is between _____________ 300-3400Hz 30-3400Hz 3-3400Hz 300-340Hz None Hint 36). The bandwidth of music is between _____________ 500-3400Hz 50Hz-16KHz 6-3400Hz 200-340Hz None Hint 37). The bandwidth of facsimile is _____________ 40KHz 50Hz-16KHz 6-3400Hz 200-340Hz None Hint 38). The ratio of uptime divided by SVM of uptime and downtime is known as __________ Availability Incident coefficient Deflection coefficient None of the above None Hint 39). The bit rate of personal communication is __________ 300 to 9600 bits/sec 30 to 9600 bits/sec 500 to 9600 bits/sec 900 to 9600 bits/sec None Hint 40). The bit rate of personal communication is __________ 2400 to 9600 bits/sec 300 to 9600 bits/sec 500 to 9600 bits/sec 900 to 9600 bits/sec None Hint 41). ________ are the important features of TST switches Low blocking probability Stage independence Both a and b None of the above None Hint 42). What is the standard form of ESS? Electrical Switching System Electronic Switching System Embedded Switching System None of the above None Hint 43). The electronic switching system consists of __________ Programming capability Memory An external rapid switching component All of the above None Hint 44). The bit rate of the digital voice phone call is ______ 24 to 96 bits/sec 30 to 96 bits/sec 50 to 96 bits/sec 6400 bits/sec None Hint 45). The bit rate of the digital audio is ______ 24 to 96 bits/sec 30 to 96 bits/sec 50 to 96 bits/sec 1 to 2M bits/sec None Hint 46). What is the standard form of DSS? Digital Switching System Data Switching System Digital Subscriber System None of the above None Hint 47). What is the standard form of DSSS? Digital Switching System Data Switching System Digital Subscriber Switching System None of the above None Hint 48). The ratio of blocked busy hour calls divided by offered busy hour calls is known as _____________ Grade of service Incident coefficient Deflection coefficient None of the above None Hint 49). How many ways are there to create a virtual private network connection? One Two Three Four None Hint 50). What is the standard form of IPsec? Internet Protocol System Internet Protocol Security Internet Protocol Service None of the above None Hint Telecommunication and Switching Systems MCQs with Hints 51). The bit rate of compressed video is ____________ 2 to 10M bits/sec 12 to 10M bits/sec 1 to 10M bits/sec None Hint 52). The bit rate of document imaging is ____________ 10 to 100M bits/sec 12 to 10M bits/sec 1 to 10M bits/sec 9 to 10M bits/sec None Hint 53). ________ network protocols used within virtual private network tunnels IPsec PPTP L2TP All of the above None Hint 54). The advantages of outband signaling are ____________ Simple Cheap Costly Both a and b None Hint 55). The voice frequency signaling are of ___________ One Two Three Four None Hint 56). The in-channel signaling categorized into _______ One Two Three Four None Hint 57). The networks are of __________ One Two Three Four None Hint 58). The bit rate of the full-motion video is _______ 10 to 100M bits/sec 12 to 10M bits/sec 1 to 2G bits/sec 9 to 10M bits/sec None Hint 59). ____________ are the models of loss systems Lost calls held Lost calls returned Lost calls cleared All of the above None Hint 60). The transmission of data is continuous in ________ switching Circuit Datagram packet Virtual circuit packet None of the above None Hint 61). The call setup required in _______ switching Circuit Packet Both a and b None of the above None Hint 62). In message switching the information type is _______ Baudot Morse ASCII All of the above None Hint 63). In packet switching the information type is _______ Baudot Morse ASCII Bianary None Hint 64). ________ switching is suitable for bulk data transfer Circuit Packet Both a and b None of the above None Hint 65). The charge in circuit switching is based on _______ Data Time Distance None of the above None Hint 66). The charge in packet switching is based on _______ Data Time Distance Both b and c None Hint 67). The end terminal in message switching is ___________ Teletype Telegraph Both a and b None of the above None Hint 68). The end terminal in circuit switching is ___________ Modem Telephone Both a and b None of the above None Hint 69). The end terminal in packet switching is ___________ Modem Telephone Computer None of the above None Hint 70). In-circuit switching the congestion occurs _________ At setup time On every packet Both a and b None of the above None Hint Read more about Circut Switching 71). In which switching each packet follows the same route? Circuit Packet Both a and b None of the above None Hint 72). The bandwidth is fixed in ________ switching Circuit Packet Both a and b None of the above None Hint 73). In _________ switching the quality of service is difficult Circuit Packet Both a and b None of the above None Hint 74). The resource reservation is difficult in __________ switching Circuit Packet Both a and b None of the above None Hint 75). In-circuit switching ________ switches are used Space division Time division Both a and b None of the above None Hint Telecommunication and Switching Systems MCQs for Quiz 76). An electromechanical switching system, ________ switches are operated electrically Mechanical Electrical Both a and b None of the above None Hint 77). For switching purposes ___________ are used in electronic switching systems Diodes ICs Transistors All of the above None Hint 78). The switching systems are categorized into _________ One Two Three Four None Hint 79). How many types of selectors are there in the strowger switching system? One Two Three Four None Hint 80). What is the standard form of DTMF? Dual Tone Multi-Frequency Dual Time Multi-Frequency Direct Tone Multi-Frequency None of the above None Hint 81). The numbering plans are of ___________ One Two Three Four None Hint 82). The out channel signaling is categorized into __________ One Two Three Four None Hint 83). How many nodes does common channel signaling consist of? One Two Three Four None Hint 84). What is the standard form of STP? Switching Transfer Protocol Signaling Transfer Points Signaling Transfer Protocol None of the above None Hint 85). What is the standard form of SP? Switching Protocol Signaling Points Signaling Protocol None of the above None Hint 86). The ISDN supports ________ Database access Audio and video conferencing Electronic fund transfer All of the above None Hint 87). The ISDN is categorized into ___________ One Two Three Four None Hint 88). What is the standard form of BRI? Bit Rate Interface Basic Rate Interface Basic Rate Internet None of the above None Hint 89). What is the standard form of PRI? Permanent Rate Interface Primary Rate Interface Privacy Rate Internet None of the above None Hint 90). What are the advantages of ISDN? Chances for errors is less Connection is faster Higher bandwidth All of the above None Hint 91). The signal may be a function of ____________ Time, temperature Position, pressure Distance All of the above None Hint 92). How many types of channels are there? One Two Three Four None Hint 93). _______ are the examples of wired channels Twisted pair Coaxial All of the above None Hint 94). _______ are the examples of the wireless channel AM music FM music TV broadcast All of the above None Hint Read more about Wireless Communication 95). The bandwidth of speech is around _______ 1000Hz 2000Hz 3100Hz 4000Hz None Hint 96). The typical spectrum of human speech is of _________ 300Hz to 3400Hz 100Hz to 3400Hz 200Hz to 3400Hz 23000Hz to 3400Hz None Hint 97). _____________ are the desirable characteristics of the communication system Fast, accurate, secure Scalable Routable/switchable All of the above None Hint 98). ________ are the examples of telecommunication Telephone system Mobile cellular system Microwave radio systems All of the above None Hint 99). The communication is of __________ types One Two Three Four None Hint 100). Which one is a type of telecom network? PSTN Enterprise networks Both a and b None of the above None Hint Time's up
