Exam-style question
Try this first
A simple checksum is calculated by adding the data values. The values are 12, 7 and 5. What checksum should be sent with the data?.
- A.19
- B.20
- C.24
- D.35
Model answer
What a good answer should say
- 24
Explanation
Why this works
The checksum is the sum of the data values: 12 + 7 + 5 = 24. The receiver can calculate the sum again and compare it with the received checksum.
Common mistake
No common mistake is linked to this question yet.