Can the value of a checksum be all 0s?

Related questions

1. How is checksum calculated in UDP?
2. What is a file checksum?
3. What is checksum in transport layer?
4. What is md5 in Linux?
5. Why do we use checksum?
6. Why is UDP unreliable?
7. How do I verify checksum of a downloaded file?
8. What is Internet checksum?
9. Where is checksum used?
10. Is TCP checksum necessary or could TCP allow IP to checksum the data?

Tags

1. #values
2. #first
3. #checksum
4. #during
5. #change
6. #becomes
7. #wrapping
8. #binary
9. #almost
10. #swapped
11. #value
12. #happens
13. #items
14. #transmission
15. #after
16. #impossible