I2C Protocol Question & Answers May 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 None Hint 2). Which one of the following is a full-duplex communication protocol? SPI I2C Both a and b None of the above None Hint 3). Which one of the following protocols is developed by NXP? SPI I2C Both a and b None of the above None Hint 4). Which one of the following protocols is better for long-distance? SPI I2C Both a and b None of the above None Hint 5). 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 None Hint 6). Which one of the following protocols doesn't have start and stop bits? SPI I2C Both a and b None of the above None Hint 7). In which one of the following protocols the pull-up resistor is not required? SPI I2C Both a and b None of the above None Hint 8). Which one of the following communication protocols has the clock stretching feature? SPI I2C Both a and b None of the above None Hint 9). The data rate of inter integrated circuit communication protocol is around _________________ Mbps? 5Mbps 8Mbps 6Mbps 1Mbps None Hint 10). The distance of inter-integrated circuit communication protocol is around __________? 0.5m 2m 3m 4m None Hint 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 None Hint 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 None Hint 13). Which one of the following features is processed to get bus access? Arbitration Clock stretching Both a and b None of the above None Hint 14). Which one of the following communication protocols is a type of synchronous protocol? SPI I2C UART Both a and b None Hint 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 None Hint 16). The maximum working frequency of inter integrated circuit communication protocol is ____________ MHz? 10MHz 12MHz 31MHz 5MHz None Hint 17). Which one of the following protocols needs a clock? SPI I2C UART Both a and b None Hint 18). The receiver and transmitter are the two data lines in ________________ protocol? SPI I2C UART Both a and b None Hint 19). The SLCK, MODI, MISO, SS are the four data lines in ________________ protocol? SPI I2C UART Both a and b None Hint 20). Which one of the following protocols needs a chip select line? SPI I2C UART Both a and b None Hint I2C Protocol MCQs for Exams 21). Which one of the following protocols is a single master single slave communication protocol? SPI I2C UART None of the above None Hint 22). 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 None Hint 23). 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 None Hint 24). 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 None Hint 25). The maximum bit rate of an inter integrated circuit communication protocol is ______________ kbps? 100kbps 200kbps 1000kbps 5000kbps None Hint 26). The maximum length of an inter integrated circuit communication protocol is ______________? 100m 200m 1000m Undefined None Hint 27). 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 None Hint 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 None Hint 29). Which one of the following nodes sends the data to a slave? Master transmit Master receive Both a and b None of the above None Hint 30). Which one of the following is a half-duplex communication protocol? SPI I2C Both a and b None of the above None Hint I2C Protocol MCQs for Interviews 31). Which one of the following protocols is developed by Motorola? SPI I2C Both a and b None of the above None Hint 32). Which one of the following protocols is better for shorter distances? SPI I2C Both a and b None of the above None Hint 33). 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 None Hint 34). Which one of the following protocols has a start and stop bits? SPI I2C Both a and b None of the above None Hint 35). In which one of the following protocols the pull-up resistor is required? SPI I2C Both a and b None of the above None Hint 36). Which one of the following communication protocols doesn't have the clock stretching feature? SPI I2C Both a and b None of the above None Hint 37). 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 None Hint 38). 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 None Hint 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 None Hint 40). Which one of the following communication protocols is a type of asynchronous protocol? SPI I2C UART Both a and b None Hint 41). 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 None Hint 42). The maximum bit rate of UART is ________________ M bit/sec? 10M bit/sec 20M bit/sec 500Kbit/sec 40M bit/sec None Hint Read more about UART 43). The maximum working frequency of MIPII3C protocol is ___________________ MHz? 10MHz 12.5MHz 31MHz 5MHz None Hint 44). Which one of the following protocols doesn't need a clock? SPI I2C UART Both a and b None Hint 45). The SDA and SCL are the two data lines in ________________ protocol? SPI I2C UART a and b None Hint 46). Which one of the following protocols doesn't need a chip select line? SPI I2C UART Both b and c None Hint 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 None Hint 48). 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 None Hint 49). 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 None Hint 50). Which one of the following protocols is developed by Robert bosch? CAN SPI I2C All of the above None Hint I2C Protocol MCQs for Quiz 51). Which one of the following nodes sends the data to a master? Slave transmit Slave receive Both a and b None of the above None Hint 52). The message in an inter integrated circuit communication protocol is broken up into _______________ frames? One Two Three Four None Hint 53). 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 None Hint 54). 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 None Hint 55). The 10 bit addressing in an I2C uses ______________ bytes to carry the information of an address? One Two Four Eight None Hint 56). What is the standard form of IBCR? I2C Control Register I2C Common Register I2C Circuit Register None of the above None Hint 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 None Hint 58). What is the standard form of IBSR? I2C Status Register I2C Serial Register I2C Circuit Register None of the above None Hint 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 None Hint 60). 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 None Hint 61). 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 None Hint 62). 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 None Hint 63). The inter integrated circuit communication protocol allows for ________________? Single targets Single controllers Multiple controllers and multiple targets None of the above None Hint 64). In inter integrated circuit communication protocol the pull up resistor requires on ________________ line? SDA SCL Both a and b None of the above None Hint 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 None Hint 66). Which one of the following protocols is developed by Philips? CAN SPI I2C All of the above None Hint 67). Which one of the following protocols is a single master protocol? CAN SPI I2C All of the above None Hint 68). In which year does an inter-integrated circuit communication protocol invent? 2001 1869 1997 1982 None Hint 69). How many nodes are there in the architecture of an I2C protocol? One Two Three Four None Hint 70). 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 None Hint 71). How many devices can be connected with an inter-integrated circuit communication protocol? 210 500 197 127 None Hint 72). How many bits are needed to address 127 devices in an inter-integrated circuit communication protocol? 20 80 127 7 None Hint 73). What is the standard form of IBFDR? I2C Frequency Divider Register I2C Frequency Register I2C Circuit Frequency Register None of the above None Hint 74). Which one of the following nodes receives the data from a slave? Master transmit Master receive Both a and b None of the above None Hint 75). 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 None Hint Read more about I2C Protocol For More MCQs Modbus Protocol Question & Answers Please fill in the comment box below. Time's up
