1. O(n2) comparison

2. O(n√n) comparison

3. O(n long n) comparison

4. O(n) comparison

1. subclass

2. super class

3. static class

4. implement class

1. Set

2. Connections

3. Runnable

4. None of the above

1. Data are sorted

2. Data are random

3. Number of items is low

4. None of the above

1. using firewall

2. using virus protection

3. using careful programming

4. None of the above