Computer Science 0478 · Question 1[9 marks]
An aerospace satellite transmits sensor telemetry frames using a 2D Parity Block with ODD parity.
(a)[2]
State the rule used to determine the ODD parity bit for an 8-bit byte.
(b)[6]
Refer to the 6-byte telemetry matrix in the diagram.
(i)[2]
Identify the two rows that fail the odd parity check.
(ii)[2]
Identify the two columns that fail the odd parity check.
(iii)[2]
State the exact coordinates (byte number and bit position) of the two corrupted bits and state their corrected binary values.
(c)[1]
Explain why a 2D parity block would fail to detect or locate corrupted bits if four bits flipped at the four corners of a rectangle in the grid.