10.2 A receiver receives a message containing redundant bits for error checking and uses those bits to determine that no error has occurred. What does the receiver then do with the redundant bits? a. discards them b. passes them to the next layer up in the network model at the receiver c. saves them for future use d. returns them to the sender 10.3 Can single-bit parity detect an error that flips exactly two data bits? a. No b. Yes c. Sometimes- it depends on the data 10.4 The checksum for 1000 bytes of data is 16 bits long. Assuming the same checksum algorithm is used, how long will the checksum be for 500 bytes of data? a. 500 bits b. 16 bits c. 8 bits d. cannot be determined 10.5 Assume we are calculating one checksum on two data items, A and B. Instead of sending item A and then item B, we send item B and then item A. Can the checksum detect this error? a. yes b. no 11. Assume 4-bit wide units of data. Calculate the checksum for 1001 1011