Question: 12. A frame with hexadecimal data is shown below. 0x7e 0x12 0x15 0x52 0x77 0x17 0x9b BCC Calculate the 2s complement single precision checksum.

12. A frame with hexadecimal data is shown below. 0x7e 0x12 0x15

12. A frame with hexadecimal data is shown below. 0x7e 0x12 0x15 0x52 0x77 0x17 0x9b BCC Calculate the 2s complement single precision checksum. Show your work. Explain how a receiver would determine if there were errors in the received packet. [2] [1] [1] 13. How does XMODEM correct an error in a received packet? 14. Using the data word below, show how simple odd parity is not an effective method for error checking. Data Word 01010101 =

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