I2C Protocol Question & AnswersMay 9, 2022 By WatElectronics This article lists 75 I2C Protocol MCQs for Engineering Students. All the I2C Protocol Questions & Answers given below includes 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 on the fundamentals of the I2C protocol.Inter-integrated circuit communication protocol which is the I2C protocol was invented by Philips. It's a serial communication protocol but it is based on a Synchronous mode of communication which means it requires a clock signal to synchronize the data between the source and destination. The inter-integrated circuit communication protocol requires two wires to establish communications, in which one is a data line that is used to receive and transmit the data among multiple nodes in the network and another one is a clock line that is used to synchronize the data. In inter-integrated circuit communication protocol, only one data line is available to transmit and receive the data. It operates in half-duplex mode and in an I2C protocol multiple slaves and multiple masters can be present. The first version of I2C was created as a simple internal bus system and used in various Philips in-house applications which can achieve a maximum transmission speed of 100kHz. The I2C version 4 is the ultra-fast mode which can achieve a maximum transmission speed of 5MHz. The I2C uses only two bidirectional open collector or open drain lines. In I2C protocol serial data lines and serial clock lines both are built up to supply voltage with the help of resistors. This type of protocol is widely used for intra-board short-distance communications. 1). Which one of the following protocols doesn't have a multi-master serial protocol? SPI I2C Both a and b None of the above HintThe serial peripheral interface protocol is not a multi-master serial protocol but it can be a multi slave protocol 2). Which one of the following is a full-duplex communication protocol? SPI I2C Both a and b None of the above HintThe inter-integrated circuit is not a full-duplex communication protocol, it's a half-duplex communication protocol 3). Which one of the following protocols is developed by NXP? SPI I2C Both a and b None of the above HintThe I2C protocol developed by NXP and SPI protocol developed by Motorola4). Which one of the following protocols is better for long-distance? SPI I2C Both a and b None of the above HintThe serial peripheral interface communication protocol is better for shorter distance5). Which one of the following protocols doesn't require the additional signal to support multiple devices on the same bus? SPI I2C Both a and b None of the above HintThe serial peripheral interface communication protocol requires an additional signal to support multiple devices on the same bus6). Which one of the following protocols doesn't have start and stop bits? SPI I2C Both a and b None of the above HintThe inter-integrated circuit communication protocol has a start and stops bits7). In which one of the following protocols the pull-up resistor is not required? SPI I2C Both a and b None of the above HintThe inter-integrated circuit communication protocol the pull-up resistor is required8). Which one of the following communication protocols has the clock stretching feature? SPI I2C Both a and b None of the above HintThe serial peripheral interface communication protocol doesn't have the clock stretching feature9). The data rate of inter integrated circuit communication protocol is around _________________ Mbps? 5Mbps 8Mbps 6Mbps 1Mbps HintThe data rate of inter-integrated circuit communication protocol is not more than one Mbps10). The distance of inter-integrated circuit communication protocol is around __________? 0.5m 2m 3m 4m HintThe distance of inter-integrated circuit communication protocol is not more than one 11). Which one of the following protocols is more efficient in built-in multi-slave and multi-master applications? SPI I2C Both a and b None of the above HintThe serial peripheral interface communication protocol is more efficient in point to point applications 12). Which one of the following features of the inter-integrated circuit is related to the SDA line? Arbitration Clock stretching Both a and b None of the above HintThe clock stretching is one of the features of the inter-integrated circuit which is related to the SCL line13). Which one of the following features is processed to get bus access? Arbitration Clock stretching Both a and b None of the above HintThe clock stretching is one of the features of the inter-integrated circuit which is related to the SCL line which process slows down the communication 14). Which one of the following communication protocols is a type of synchronous protocol? SPI I2C UART Both a and b HintThe UART is a type of asynchronous protocol 15). The maximum bit rate of inter integrated circuit communication protocol is ________________ M bit/sec? 1M bit/sec 2M bit/sec 3M bit/sec 4M bit/sec HintThe maximum bit rate of inter-integrated circuit communication protocol is not more than 1 M bit/sec16). The maximum working frequency of inter integrated circuit communication protocol is ____________ MHz? 10MHz 12MHz 31MHz 5MHz HintThe maximum working frequency of inter-integrated circuit communication protocol is not more than 5MHz17). Which one of the following protocols needs a clock? SPI I2C UART Both a and b HintThe clock is not needed in the universal asynchronous receiver and transmitter protocol 18). The receiver and transmitter are the two data lines in ________________ protocol? SPI I2C UART Both a and b HintThe SDA & SCL are I2C data lines, SLCK, MODI, MISO, and SS are the four data lines of SPI protocol19). The SLCK, MODI, MISO, SS are the four data lines in ________________ protocol? SPI I2C UART Both a and b HintThe transmitter & receiver are UART data lines, SDA and SCL are the two data lines of the I2C protocol 20). Which one of the following protocols needs a chip select line? SPI I2C UART Both a and b HintThe I2C and UART protocols don't need a chip select lineI2C Protocol MCQs for Exams21). Which one of the following protocols is a single master single slave communication protocol? SPI I2C UART None of the above HintThe universal asynchronous transmitter and receiver protocol is a single master single slave communication protocol22). In which one of the following combinations of both SDA and SCL signals are high in the I2C protocol? Start combination Stop combination Bit transfer combination Acknowledge combination Hintn start combination both SDA and SCL signals are high in the I2C protocol23). In which one of the following modes the speed of the I2C protocol is 100kbps? Standard mode Fast mode Fast mode plus None of the above HintIn fast mode and fast plus mode the speed of the I2C protocol is more than 100kbps24). The serial data line in an I2C protocol is low when serial clock pulses is logical _________________? One Zero Either one or zero None of the above HintThe serial data line in an I2C protocol is high when serial clock pulses is the logical one25). The maximum bit rate of an inter integrated circuit communication protocol is ______________ kbps? 100kbps 200kbps 1000kbps 5000kbps HintThe maximum bit rate of an inter-integrated circuit communication protocol is 5000 kbps26). The maximum length of an inter integrated circuit communication protocol is ______________? 100m 200m 1000m Undefined HintThe maximum length of an inter-integrated circuit communication protocol is undefined27). Which one of the following protocols doesn't have an acknowledgment mechanism to confirm receipt of data? SPI I2C Both a and b None of the above HintThe SPI protocol has an acknowledgment mechanism to confirm receipt of data 28). Which one of the following is the node in an inter-integrated circuit communication protocol that receives the clock? Master Slave Both a and b None of the above HintThe master node in an inter-integrated circuit communication protocol generates the clock29). Which one of the following nodes sends the data to a slave? Master transmit Master receive Both a and b None of the above HintThe master receive node receives the data from a slave30). Which one of the following is a half-duplex communication protocol? SPI I2C Both a and b None of the above HintThe serial interface peripheral is a full-duplex communication protocolI2C Protocol MCQs for Interviews31). Which one of the following protocols is developed by Motorola? SPI I2C Both a and b None of the above HintThe I2C protocol developed by NXP and SPI protocol developed by Motorola32). Which one of the following protocols is better for shorter distances? SPI I2C Both a and b None of the above HintThe inter-integrated circuit communication protocol is better for longer distance33). Which one of the following protocols requires the additional signal to support multiple devices on the same bus? SPI I2C Both a and b None of the above HintThe inter-integrated circuit communication protocol doesn't require an additional signal to support multiple devices on the same bus34). Which one of the following protocols has a start and stop bits? SPI I2C Both a and b None of the above HintThe serial peripheral interface communication protocol doesn't have a start and stops bits35). In which one of the following protocols the pull-up resistor is required? SPI I2C Both a and b None of the above HintThe serial peripheral interface communication protocol the pull-up resistor is not required36). Which one of the following communication protocols doesn't have the clock stretching feature? SPI I2C Both a and b None of the above HintThe inter-integrated circuit communication protocol has the clock stretching feature37). Which one of the following protocols is more efficient in built-in point-to-point applications? SPI I2C Both a and b None of the above HintThe inter-integrated circuit communication protocol is more efficient in built-in multi slave and multi-master applications38). Which one of the following features of the inter-integrated circuit is related to the SCL line? Arbitration Clock stretching Both a and b None of the above HintThe arbitration is one of the features of inter-integrated circuits which is related to the SDA line 39). Which one of the following features is the process to slow down the communication? Arbitration Clock stretching Both a and b None of the above HintThe arbitration is one of the features of the inter-integrated circuit is related to the SDA line which is used to process to get the bus access40). Which one of the following communication protocols is a type of asynchronous protocol? SPI I2C UART Both a and b HintThe inter-integrated circuit and serial peripheral interface protocols are synchronous protocols41). The maximum bit rate of serial peripheral interface communication protocol is ________________ M bit/sec? 10M bit/sec 20M bit/sec 30M bit/sec 40M bit/sec HintThe maximum bit rate of serial peripheral interface communication protocol is not more than 10M bit/sec42). The maximum bit rate of UART is ________________ M bit/sec? 10M bit/sec 20M bit/sec 500Kbit/sec 40M bit/sec HintThe maximum bit rate of UART is in kilobits per secRead more about UART 43). The maximum working frequency of MIPII3C protocol is ___________________ MHz? 10MHz 12.5MHz 31MHz 5MHz HintThe maximum working frequency of the MIPII3C protocol is 12.5 MHz44). Which one of the following protocols doesn't need a clock? SPI I2C UART Both a and b HintThe clock is needed in both I2C and SPI communication protocols 45). The SDA and SCL are the two data lines in ________________ protocol? SPI I2C UART a and b HintThe transmitter & receiver are UART data lines, SLCK, MODI, MISO, and SS are the four data lines of SPI protocol 46). Which one of the following protocols doesn't need a chip select line? SPI I2C UART Both b and c HintThe SPI protocol needs a chip select line 47). In which one of the following combinations both SDA and SCL signals are low in I2C protocol? Start combination Bit transfer combination Acknowledge combination Stop combination HintIn stop combination both SDA and SCL signals are low in the I2C protocol48). In which one of the following modes the speed of the I2C protocol is 400kbps? Standard mode Fast mode Both a and b None of the above HintIn standard mode, the speed of the I2C protocol is less than 200kbps49). Which one of the following protocol have an acknowledgment mechanism to confirm receipt of data? SPI I2C Both a and b None of the above HintThe I2C protocol doesn't have an acknowledgment mechanism to confirm receipt of data50). Which one of the following protocols is developed by Robert bosch? CAN SPI I2C All of the above HintThe SPI developed by Motorola and the I2C developed by Philips I2C Protocol MCQs for Quiz51). Which one of the following nodes sends the data to a master? Slave transmit Slave receive Both a and b None of the above HintThe slave receive node receives the data from a master52). The message in an inter integrated circuit communication protocol is broken up into _______________ frames? One Two Three Four HintThe address and data frames are two types of frames in an I2C protocol53). The master device in an I2C protocol uses ______________ bit address to specify the slave device? 10 bit 7 bit Either 10 or 7 bit None of the above HintThe master device in an I2C protocol uses either a 10 or 7-bit address to specify the slave device54). How many masters are allowed in an inter-integrated circuit communication protocol to share the same peripheral devices? Single Double Multiple None of the above HintThe multiple masters are allowed in an inter-integrated circuit communication protocol to share the same peripheral devices55). The 10 bit addressing in an I2C uses ______________ bytes to carry the information of an address? One Two Four Eight Hinthe 10 bit addressing in an I2C uses two bytes to carry the information of an address56). What is the standard form of IBCR? I2C Control Register I2C Common Register I2C Circuit Register None of the above HintThe IBCR is one type of inter-integrated circuit control register 57). Which one of the following is a node in an inter-integrated circuit communication protocol that generates the clock? Master Slave Both a and b None of the above HintThe slave node in an inter-integrated circuit communication protocol receives the clock58). What is the standard form of IBSR? I2C Status Register I2C Serial Register I2C Circuit Register None of the above HintThe IBSR is one type of inter-integrated circuit status register 59). Which one of the following nodes receives the data from a master? Slave transmit Slave receive Both a and b None of the above HintThe slave transmit node sends the data to a master60). In which one of the following combinations of SDA can either be high or low in I2C protocol? Start combination Bit transfer combination Stop combination Acknowledge combination HintIn bit transfer combination the SDA can either be high or low in the I2C protocol61). In which one of the following modes the speed of the I2C protocol is 5Mbps? Standard mode High-speed mode Ultra-fast mode None of the above HintIn standard mode and high-speed mode the speed of the I2C protocol is less than 5Mbps62). Which one of the following modes in an I2C communication protocol requires controller code for high-speed transfer? Standard mode Fast mode Fast plus mode High-speed mode HintThe fast plus, fast, and standard modes doesn't require controller code for high-speed transfer63). The inter integrated circuit communication protocol allows for ________________? Single targets Single controllers Multiple controllers and multiple targets None of the above HintThe inter-integrated circuit communication protocol allows for multiple controllers and multiple targets64). In inter integrated circuit communication protocol the pull up resistor requires on ________________ line? SDA SCL Both a and b None of the above HintThe SDA and SCL both are data lines in inter-integrated circuit communication protocol 65). The serial data line in an I2C protocol is high when serial clock pulses is logical _________________? One Zero Either one or zero None of the above HintThe serial data line in an I2C protocol is low when serial clock pulses are logical zero66). Which one of the following protocols is developed by Philips? CAN SPI I2C All of the above HintThe SPI was developed by Motorola and the CAN was developed by Robert botch67). Which one of the following protocols is a single master protocol? CAN SPI I2C All of the above HintThe CAN and I2C protocols are multi-master protocols68). In which year does an inter-integrated circuit communication protocol invent? 2001 1869 1997 1982 HintIn 1982 an inter-integrated circuit communication protocol was invented69). How many nodes are there in the architecture of an I2C protocol? One Two Three Four HintThe master and slave are two nodes in an inter-integrated circuit communication protocol70). In which one of the following modes the speed of the I2C protocol is 1Mbps? Standard mode Fast plus mode Both a and b None of the above HintIn standard mode, the speed of the I2C protocol is in kbps71). How many devices can be connected with an inter-integrated circuit communication protocol? 210 500 197 127 HintThe devices which can be connected with an inter integrated circuit communication protocol is not more than 12772). How many bits are needed to address 127 devices in an inter-integrated circuit communication protocol? 20 80 127 7 HintThe bits which are needed to address 127 devices in an inter-integrated circuit communication protocol is not greater than seven73). What is the standard form of IBFDR? I2C Frequency Divider Register I2C Frequency Register I2C Circuit Frequency Register None of the above HintThe IBFDR is one type of inter-integrated circuit frequency divider register74). Which one of the following nodes receives the data from a slave? Master transmit Master receive Both a and b None of the above HintThe Master transmit node sends the data to a slave75). In which one of the following modes the speed of the I2C protocol is 3.4Mbps? Standard mode High-speed mode Both a and b None of the above HintIn standard mode, the speed of the I2C protocol is in kbpsRead more about I2C Protocol For More MCQsModbus Protocol Question & Answers Please fill in the comment box below. Time is Up! Time's up
