1. With the huge amounts of 1s and 0s being transmitted along cables, even with representing a simple text document errors can occur.

2. Errors can arise from ______________________ usually in the form of electrical noise.

3. The end result (when errors occur) is that certain bits get corrupted. This means, for example, that some _______________

4. Normal ASCII characters do not make use of the MSB storing the letter in 7 bits. This leaves us one left over or unused bit, which can be put to good use when turned into a ______________

5. This is a crude method of identifying errors in data by transmitting binary digits multiple times and then looking at the pattern received.

6. This is a form of redundancy checking used for error detection on identification numbers, such as bank account numbers (where at least sometimes the input is manual)

7. The ISBN-10 number system used for books makes use of a process called Modulo-11 to create its _______________

8. This is a mathematical algorithm applied to a block of data. The data from the block is used in order to create the initial __________.

9. If the checksums match (assuming the same algorithm has been applied at both ends) then the ___________________-

10. In computer processors the parity flag indicates if the number of set bits is odd or even in the binary representation of the result of the last operation. It is normally a ____________