(c) A data link has a path delay of 3 msec and a transmission rate of 1 MBytes/sec. The data frame has 256 bytes of information, a 2 byte start field, a 32 byte header and an 8 byte check field. The acknowledgement information is 'piggy-backed' on returning data frames. The processing time is 5 usec. If the bit error ratio is 5 x 10- determine the average data rate that is achieved, the size of the buffer needed to correct for a single frame error, and the probability that the buffer size will not be sufficient in general operation, (c) A data link has a path delay of 3 msec and a transmission rate of 1 MBytes/sec. The data frame has 256 bytes of information, a 2 byte start field, a 32 byte header and an 8 byte check field. The acknowledgement information is 'piggy-backed' on returning data frames. The processing time is 5 usec. If the bit error ratio is 5 x 10- determine the average data rate that is achieved, the size of the buffer needed to correct for a single frame error, and the probability that the buffer size will not be sufficient in general operation