Is default case necessary in switch?

Related questions

1. Does a break is required by default case in switch statement?
2. What is the default in switch case?
3. Can we use continue in switch case in Java?
4. Can we use if statement in switch case in C?
5. Can a switch statement be written without a default case?
6. What is the difference between switch case and if statements?
7. Which is faster if statement or switch?
8. How does a switch case work?
9. Why switch case is better than else if ladder?
10. Is switch case better than if else?

Tags

1. #increases
2. #necessary
3. #complexity
4. #automatically
5. #there
6. #waste
7. #matched
8. #switch
9. #satisified
10. #useful
11. #statement
12. #terminated
13. #default
14. #reason
15. #executes