Time Division Multiplexing Question & Answers May 2, 2022 By WatElectronics This article lists 75 Time Division Multiplexing MCQs for engineering students. All the Time Division Multiplexing Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Time Division Multiplexing. Time-division multiplexing is represented as TDM. In TDM, the signals get transmitted by occupying different time slots. Source signals are divided into multiple frames each having separate time slots. When the frame is transmitted over the particular slot, the next frame uses the same channel to get transmitted and the process is repeated simultaneously. Only digital signals are preferred best over analog signals while multiplexing. There are four types of TDM available: Asynchronous TDM, Synchronous TDM, Interleaving TDM, and Statistical TDM. Advantages of TDM are it protects data from degradation, reduces latency compared to other methods of multiplexing, increases bandwidth and it fixes failures. Disadvantages of TDM are the entire system will fail if there exists one channel failure, it takes a lot of time to shift from one channel to another, more complex than other methods, it requires an expensive regenerative repeater to regenerate the signal. Applications of TDM are in Hospitals, Telephony, Television, Satellite communication, and LAN networks. 1). Time Division multiplexing is a ________ method? Signal Digital Analog None of the above None Hint 2). Example of TDM is _____? Hospitals Laboratories Television Airplanes None Hint 3). How many variants exists in TDM? 2 1 3 4 None Hint 4)._________ multiplexing in which the data is transmitted asynchronously. Frequency division Time division Synchronous time division Asynchronous time division None Hint 5)._________ multiplexing method that polls nodes and immediately skips any nodes. Statistical time division Time division Synchronous time division Asynchronous time division None Hint 6). ___________ is used in BISDN, Broadband ISDN. Synchronous transfer Mode Statistical time division Asynchronous optical network None of the above None Hint 7). Asynchronous optical network, SONET architecture is supported by________? Statistical time division Synchronous transfer Mode Synchronous time division Asynchronous time division None Hint 8). Statistical time division multiplexing is represented as _______? STM STDM SDM STTDM None Hint 9). How many types of TDM exists? 2 1 3 4 None Hint 10). In synchronous TDM, each time slot is assigned _________ to a constant source. Later Before Further None of the above None Hint 11). Time slots are ________ irrespective of sources shared few records or not. Send Receive Collect Obtain None Hint 12) TDM can manage various source of _________? Frequency division Bandwidth Wavelength Data rates None Hint 13). Disadvantage of TDM is some of the time slots in the frame are ___? Wasted Used Reuse Forwarded None Hint 14). TDM passes __________ digital or analog signals over a common channel. Two or more One or two Two or none None of the above None Hint 15). A sample byte of sub channel is transmitted during _____? Frequency slots Time slot Channels Frames None Hint 16). One TDM frame consists of one time slot per _________? Frequency slots Time slot Sub channels Frames None Hint 17). TDM Frame contains sub channels and _________? Frequency slots Synchronization channels Sub channels Frames None Hint 18). TDM also contains _________ channel before synchronization? Frequency slots Synchronization channels Sub channels Error correction None Hint 19). Second sample of TDM starts with again _________frame. Old New Sample None of the above None Hint 20). In TDM, all signals operate with same frequency at different ______? Time Frequency Wavelength Multiplexing None Hint 21). _____ is used for multiplexing digitized voice streams. Statistical time division Synchronous transfer Mode Synchronous time division Asynchronous time division None Hint 22). ___________ slots are allocated dynamically depending on the speed of the source. Statistical time division Synchronous transfer Mode Synchronous time division None of the above None Hint 23). Asynchronous TDM thus saves the ___________, when time slots are allocated dynamically. Wavelength Bandwidth Frequency Channel capacity None Hint 24). Circuit which combines source of communication link is called ______? Multiplexer Op-amp Waveguides Actuator None Hint 25). In TDM, time slot selection is _______ proportional to the system efficiency. Indirectly Directly Reverse None of the above None Hint Time Division Multiplexing Quiz Questions and Answers. 26). TDM is used for large distance _________ links? Frequency Communication Bandwidth None of the above None Hint 27). Sync TDM is used for high _____ transmission. Speed Distance Time Travel None Hint 28). TDM frame is also known as __________? Data packet Clock timing Data frames None of the above None Hint 29). Time Division Multiplexing avoids___________ problem? Bandwidth Resonance Crosstalk None of the above None Hint 30). In reverse sampling theorem, ________ transmission bandwidth is required. Maximum Minimum Infinite Null None Hint 31). TDM can be applied where messages are represented in _______ format. Pulse Modulation Amplitude Modulation Frequency modulation None of the above None Hint 32). Each individual data stream is _______at the receiving end based on timing. Assembled Reassembled Dispersed Left None Hint 33). In sampling of synchronous TDM, the speed is _________ to every signal. Similar Different Equal None of the above None Hint 34). Sampling needs a _______ signal at both ends of transmitter and receiver. Clock Multiplexing Frequency None of the above None Hint 35). In asynchronous TDM, for different signals, the rate of _____ is different. Sampling Non-sampling Pulsating Non-pulsating None Hint 36). Asynchronous TDM does not need ____ signal. Clock Multiplexing Frequency None of the above None Hint 37). __________ is low in Asynchronous TDM. Bandwidth Wavelength Time Clock signal None Hint 38). Interleaving TDM has two speedy ________ switches on multiplexing and de multiplexing surfaces. Rotary Squared Parallel Straight None Hint 39). Statistical TDM is used in telephone ______ to control the calls. Wires Cables Switch boards Panels None Hint 40). Calculate efficiency, if transmission & propagation delays of a packet is 2msec each with B.W= 5Mbps. 100% 60% 70% 50% None Hint 41). Efficiency η, formula=______? η=1/a η=1/1+a η=1/1-a η=1/2a None Hint 42). Effective bandwidth is defined as ___________ of efficiency and bandwidth. Addition Subtraction Multiplication Division None Hint 43). When η=0.5 and B.W= 5Mbps, then the Effective bandwidth will be _____? 2.30Mbps 2.5Mbps 3Mbps 2Mbps None Hint 44). Calculate How Many Stations are connected to the Network when BW requirement of one station=2Kbps and Maximum effective B.W=2.5Mbps? 1100 1200 1500 1230 None Hint 45). TDM is ___ conflict than FDM? More High Increase Less None Hint 46). TDM is very _____? Easy Simple Efficient Tough None Hint 47).________takes place in Time division multiplexing? Frequency sharing Time sharing Time slots Multiplexing None Hint 48). In TDM, _____ is simple. Wiring Clock signaling Timing Frequency None Hint 49).____ protects data from degradation? PCM TDM FDM WDM None Hint 50).TDM reduces_______ compared to other signals? Frequency Timing Latency Signaling None Hint Time Division Multiplexing Interview Questions and Answers 51). TDM ______ from one channel to another? Switches Terminate Constant Null None Hint 52). A failure in one channel can cause the _____ system to fail. Half Entire Semi None of the above None Hint 53). Analog lines use_______ kind of multiplexing? WDM FDM TDM None of the above None Hint 54). Synchronous TDM is not _______because if the input frame has no data to send. Enlarge Exact Efficient Easy None Hint 55). In Synchronous TDM, the time slot remains ______ in the output frame. Filled Empty Organized Pervade None Hint 56). A modulation technique, in which each pulse holds some ____ quantity of time duration for maximal channel usage. Short Long Null None of the above None Hint 57). TDM system comprises of many LPF based on the ____ number inputs. Frames Packet Data Bandwidth None Hint Read more about LPF. 58). Low pass filters ____the data input signal (aliasing). Eliminate Increase Adds Constant None Hint 59). In TDM, output of each LPF is provided to _______ component input? Sequencer Commutator Op-amp Filters None Hint 60). Which of the following component of dynamic commutator collects the data inputs? HPF LPF BPF BRF None Hint 61). fs represents ____ type of frequency of the system. Source Amplitude Sampling Difference None Hint 62). Which of the following component is placed at the receiver end, for synchronizing with commutator at senders end? LPF De-commutator Degenerative None of the above None Hint 63). De-commutator isolates the ____ division multiplexed signal at the receiptant end. Time Frequency Wideband Band Reject None Hint Time Division Multiplexing MCQs for Exams 64). Sampling frequency fs, should be greater than or equal to two times of_____ frequency? Minimum Maximum Lowest Constant None Hint 65). Which of the following is the formula of successive sample TDM______? T_S = 1/f_s T_S = 1/f_s T_S = 2/f_s T_S = f_s None Hint 66). Successive time duration is ______ proportional to maximum frequency. Directly Inversely Constant None of the above None Hint 67). Choose the correct option as given below: T_S ≤ 1/f_m T_S ≤ 1/〖2f〗_m T_S ≤ 2/f_m T_S ≤ f_m None Hint 68). Each interval will provide us with N samples and the spacing between the two is given as_______? T_S/N T_S/2N T_S N T_S/3N None Hint 69). Pulse frequency formula is given by_____? N/f_S Nf_S f_S/N 2Nf_S None Hint 70). TDM signal pulse per second is called ______? Fixed rate Moderate rate Signaling rate Constant rate None Hint 71). Signaling rate in TDM pulses is denoted by ______? a s r t None Hint 72). Signaling rate r, is equal to _______ frequency? Pulse Maximum Source Minimum None Hint 73). Formula for signaling rate r =_______? N/f_S Nf_S f_S/N 2Nf_S None Hint 74). Which of the following issue doe snot exists in TDM. Modulation Intermodulation Demodulation None of the above None Hint 75). Which of the following is used for minimizing Pulse overlapping? Guard Extra More Less None Hint Please fill in the comment box below. Time's up
