Bluetooth Question & Answers June 5, 2021 By WatElectronics This article lists 100 Bluetooth MCQs for engineering students. All the Modulation Questions & Answers given below include a solution and 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 their fundamentals on Bluetooth topic which is core in Electronics & Communication Engineering. Bluetooth technology is also a wireless LAN technology, where we connect the devices such as telephones, printers, computers, laptops, cameras, etc within short distances. The Bluetooth uses ISM (Industrial, Scientific, Medical) radio frequency band for communicating with other devices. Bluetooth was developed by a telecommunication company ERICSSON in 1994 and was initially called “Short Link Radio Technology” until 1997 later it got the name Bluetooth. It is a low-power-consuming technology and it operates within a short range and provides a wireless connection to mobile phones, computers, and all electronic devices which are Bluetooth enabled. There can be an N number of devices that are not Bluetooth enable but the Bluetooth demands that each of the devices should be Bluetooth enabled. 1). The frequency band of Bluetooth radio is around _______ 2.1 GHz 2.3 GHz 2.4 GHz None of the above None Hint 2). The baseband specifies ____________ Forward Error Correction Cyclic Redundancy Check Automatic Repeat Request All of the above None Hint 3). What is the standard form of LMP? Link Memory Protocol Line Memory Protocol Link Manager Protocol Line Manager Protocol None Hint 4). What are the benefits of Bluetooth technology? Cable replacement, ease of file sharing Internet connectivity Low-cost technology All of the above None Hint 5). The network topologies are classified into __________ Two Three Four Five None Hint 6). The single piconet formed by _________ One slave and one master One slave and multiple masters Multiple slaves and one master Multiple slaves and multiple masters None Hint 7). The multiple piconets formed by _________ One slave and one master One slave and multiple masters Multiple slaves and one master Multiple slaves and one master None Hint 8). The scatternet is a combination of ________ Single piconet Double piconet Multiple piconet None of the above None Hint 9). The spectrum used by Bluetooth starts from _______ and ends at ________ 2402 MHz, 2.483.5 MHZ 2302 MHz, 2.483 MHZ 2300 MHz, 2.400 MHZ None of the above None Hint 10). The Bluetooth devices uses _________ techniques Spread spectrum technique Frequency hopping technique Direct Sequence spread spectrum None of the above None Hint 11). How many channels do Bluetooth consists? 79 channels 89 channels 99 channels None of the above None Hint 12). The architecture of Bluetooth is called ______ Scatternet Piconet Master and slave None of the above None Hint 13). A _________ node is a node from which data is being sent Master node Slave node Master and slave node None of the above None Hint 14). In which node the data is being received? Master node Slave node Master and slave node None of the above None Hint 15). How many nodes do piconet consists of? Two nodes Three nodes Four nodes Eight nodes None Hint 16). The Bluetooth technologies used in _____ Wireless keyboard Wireless mouse Headsets All of the above None Hint 17). What is the advantage of using Bluetooth technology? Wireless technology, cheap technology Very simple to form a piconet Robust, low energy consumption All of the above None Hint 18). What are the disadvantages of Bluetooth technology? Wireless technology, cheap technology Simple to use Low in bandwidth All of the above None Hint 19). How many layers are present in the Bluetooth technology? Two layers Three layers Four layers None of the above None Hint 20). __________ is a combination of baseband layer and link manager Application layer Data link layer Middle layer None of the above None Hint Bluetooth Important MCQs for Students 21). What was the range of Bluetooth? Only 10m More than 10m Less than 10m None of the above None Hint 22). The power consumption in Bluetooth is _______ High Very high Low None of the above None Hint 23). The Bluetooth technology is also a ________ Wired technology Wireless LAN technology Wired LAN technology None of the above None Hint 24). What is the standard form of L2CAP? Logical Control Adaptation Protocol Link Control Adaptation Layer Logical Link Control Adaptation Layer None of the above None Hint 25). The frame format of logical link control adaptation layer has _____ Length Channel Data and control All of the above None Hint 26). ________ are the functions of logical link control adaptation layer Multiplexing, QOS Segmentation and reassembly Group management All of the above None Hint 27). The baseband layer in Bluetooth technology similar to ______ MAC sub layer Application layer Logical link control adaptation layer All of the above None Hint 28). In Bluetooth technology the access method used in the baseband layer is ______ Time Division Multiplexing Frequency Division Multiplexing Code Division Multiplexing All of the above None Hint 29). What is the standard form of ISM? International Scientific Medical Indian Scientific Medical Industrial, Scientific, Medical None of the above None Hint 30). How many firms does the Bluetooth frame format have? One Two Three None of the above None Hint 31). How many bits does the access code have in Bluetooth frame format? 30 bits 70 bits 60 bits None of the above None Hint 32). How many bits does the header have in Bluetooth frame format? 30 bits 70 bits 54 bits None of the above None Hint 33). How many bits does payload have in Bluetooth frame format? 2745 bits 70 bits 54 bits None of the above None Hint 34). The access code in Bluetooth frame format divided into how many sections? One Two Three None of the above None Hint 35). The Bluetooth frame format has ________ Access code, payload Header, payload Access code, payload, header None of the above None Hint 36). The access code in a Bluetooth frame format used for ________ Synchronization Offset compensation Both a and b None of the above None Hint 37). The access code is classified into ______ Channel access code, inquiry access code Channel access code, device access code Channel access code, device access code, inquiry access code None of the above None Hint 38). How many bits does the trailer in an access code consists of? 4 bits 64 bits 54 bits None of the above None Hint 39). How many bits does the synchronization in an access code consists of? 30 bits 64 bits 54 bits None of the above None Hint 40). How many bits does the preamble in an access code consists of? 4 bits 64 bits 54 bits None of the above None Hint Bluetooth MCQ’s for Interviews 41). The channel access code mainly targeted for _____ Individual devices Piconet ID Both a and b None of the above None Hint 42). The data speed of Bluetooth is around ______ 1 Mbps 2 Mbps 4 Mbps None of the above None Hint 43). The IEEE 802.11 b and 802.11 g wireless standard frequency range is around ________ 1.5 GHz 2.4 GHz 5 GHz None of the above None Hint 44). Which layer in the Bluetooth protocol stack performs the connection establishment within a piconet? Physical layer Application layer Logical link control adaptation layer Baseband layer None Hint 45). When was Bluetooth version 1.0 is released? 1989 June 1999 July 1998 June None of the above None Hint 46). How many piconets do scatternet consists of? 5 piconets 10 piconets 20 piconets None of the above None Hint 47). What is the maximum data rate of IEEE 802.11 a? 54Mbps 20Mbps 11Mbps None of the above None Hint 48). What is the standard form of BLE? Bluetooth Energy Bluetooth Low Energy Bluetooth High Energy None of the above None Hint 49). The dual-mode Bluetooth module communicated with _________ Only with Bluetooth classic devices Bluetooth Low Energy Both a and b None of the above None Hint 50). In which year the Bluetooth Low Energy is introduced? 1989 1999 2010 None of the above None Hint 51). The Bluetooth Low Energy is a ______ New technology Consumes low power Designed for IOT All of the above None Hint 52). The Bluetooth Low Energy operates at _____ 2.4 GHz ISM band 2.0 GHz ISM band 3.4 GHz ISM band None of the above None Hint 53). In the BLE radio layer all physical channels use ________ Gaussian Frequency Shift Keying Amplitude Shift Keying Phase Shift Keying None of the above None Hint 54). What is the range of BLE? 10-20 meters 5-20 meters 0-50 meters None of the above None Hint 55). The BLE L2CAP used for ________ Advertisement Scanning Connection establishment All of the above None Hint 56). How many channels does BLE have? 20 channels of 2 MHz 20 channels of 4 MHz 20 channels of 8 MHz None of the above None Hint 57). The single-mode Bluetooth modules communicate with _____ Only with Bluetooth classic devices Bluetooth Low Energy Both a and b None of the above None Hint 58). Which protocol helps to access the data? Attribute protocol Host controller interface Logical link control adaptation layer Security manager None Hint 59). The IEEE 802.11 a wireless standard frequency range is around ________ 1 GHz 2 GHz 5 GHz None of the above None Hint 60). Which layer in the Bluetooth protocol stack converts the data into radio signals? Physical layer Application layer Logical link control adaptation layer All of the above None Hint Bluetooth MCQs for Quiz 61). What is the maximum data rate of IEEE 802.11 b? 10Mbps 20Mbps 11Mbps None of the above None Hint 62). What is the standard form of A2DP? Advanced Audio Distribution Protocol Advanced Audio Distribution Profile Advanced Audio Distance Protocol None of the above None Hint 63). What is the standard form of GAP? Generic Access Profile Generic Attribute Profile Generic Attribute Protocol None of the above None Hint 64). What is the standard form of GATT? Generic Access Profile Generic Attribute Profile Generic Attribute Protocol None of the above None Hint 65). Which layer defines packet structure and control? MAC sub layer Application layer Logical link control adaptation layer Link layer None Hint 66). What is the distance/range of BT-LE? Less than 100m Greater than 100m Less than 50m None of the above None Hint 67). The BLE used in _________ Phone accessories Sports & fitness, health, wellness Home/building automation All of the above None Hint 68). How much the maximum transmitter power of BLE? 100mW (20 dBm) 200mW (20 dBm) 150mW (20 dBm) None of the above None Hint 69). The bandwidth of BT-LE is around __________ 2MHz 4MHz 8MHz None of the above None Hint 70). The speed of Bluetooth version 5 is _______ 2Mbps 4Mbps 8Mbps None of the above None Hint 71). The speed of Bluetooth version 4.2 is _______ 2Mbps 1Mbps 8Mbps None of the above None Hint 72). The outdoor range of Bluetooth version 5 is _______ 200m 40m 80m None of the above None Hint 73). The outdoor range of Bluetooth version 4.2 is _______ 200m 40m 80m None of the above None Hint 74). The indoor range of Bluetooth version 5 is _______ 200m 40m 10m None of the above None Hint 75). The indoor range of Bluetooth version 4.2 is _______ 200m 40m 10m None of the above None Hint 76). The message capacity of Bluetooth version 5 is _______ 255 bytes 230bytes 300bytes None of the above None Hint 77). The message capacity of Bluetooth version 4.2 is _______ 255 bytes 230bytes 31 bytes None of the above None Hint 78). The battery life of Bluetooth version 5 is _________ Better Longer life Less None of the above None Hint 79). The battery life of Bluetooth version 4.2 is _________ Better Longer life Less None of the above None Hint 80). In Bluetooth version 5 the reliability is _________ High Low Better None of the above None Hint Bluetooth Important MCQ’s with Hints 81). In Bluetooth version 4.2 the reliability is _________ High Low Better None of the above None Hint 82). The Bluetooth beacon in Bluetooth version 5 is popular True False None Hint 83). The Bluetooth version 5 supports IOT devices True False None Hint 84). In Bluetooth version 5 the security control is ________ High Low Better None of the above None Hint 85). The Bluetooth radio power classes are categorized into how many classes? One Two Three None of the above None Hint 86). How much the range in the class1 category of Bluetooth radio power class? 100 meters 200 meters 300 meters None of the above None Hint 87). How much the range in the class2 category of Bluetooth radio power class? 100 meters 10 meters 300 meters None of the above None Hint 88). How much the range in the class3 category of Bluetooth radio power class? 100 meters 10 meters 1 meter None of the above None Hint 89). The maximum permitted power of class1 Bluetooth RF power class is ____ 100 mW (20dBm) 200 mW (20dBm) 10 mW (20dBm) None of the above None Hint 90). The maximum permitted power of class2 Bluetooth RF power class is ____ 100 mW (20dBm) 200 mW (20dBm) 2.5 mW (4dBm) None of the above None Hint 91). The maximum permitted power of class3 Bluetooth RF power class is ____ 1 mW (0 dBm) 200 mW (20dBm) 2.5 mW (4dBm) None of the above None Hint 92). The data payload throughput of classic Bluetooth technology is ______ 2Mbps 100 Kbps 2.5 Mbps None of the above None Hint 93). The data payload throughput of Bluetooth low energy technology is ______ 2Mbps 100 Kbps 2.5 Mbps None of the above None Hint 94). The range of classic Bluetooth technology is up to ____________ 100 meters 10 meters 250 meters None of the above None Hint 95). The range of Bluetooth low energy technology is up to ____________ 100 meters 10 meters 250 meters None of the above None Hint 96). The power consumption in classic Bluetooth technology is ________ Strong Weak Good Very strong None Hint 97). The power consumption in Bluetooth low energy technology is ________ Strong Weak Good Very strong None Hint 98). The connection set up speed in Bluetooth low energy technology is ________ Strong Weak Good Very strong None Hint 99). The connection set up speed in classic Bluetooth technology is ________ Strong Weak Good Very strong None Hint 100). What are the disadvantages of using Bluetooth? Less secure, it can be hacked Data transfer rate is slow It has small range All of the above None Hint Read More About Types of Bluetooth Time's up
