Why DNS uses both TCP and UDP?

Related questions

1. Is Youtube a TCP or UDP?
2. Is UDP fair?
3. Why UDP is needed?
4. Which is more secure UDP or TCP?
5. Does UDP require a handshake?
6. Why UDP is used?
7. How reliable is UDP?
8. What is the need of UDP?
9. Does Netflix use UDP or TCP?
10. Why RIP uses UDP instead of TCP?

Tags

1. #whereas
2. #transfer
3. #information
4. #services
5. #regular
6. #reverse
7. #queries
8. #larger
9. #exchange
10. #small
11. #either
12. #other
13. #primary
14. #protocols
15. #bytes