31. Which of the following Java Set Interface implementations allows elements to be stored in a linked list, providing predictable iteration order?
- Java HashSet
- Java LinkedHashSet
- Java TreeSet
- Java EnumSet
32. Which of the following Java Set Interface implementations is backed by a hash table, providing constant-time performance for basic operations?
- Java HashSet
- Java LinkedHashSet
- Java TreeSet
- Java EnumSet
33. Which of the following Java Set Interface implementations maintains elements in a sorted order based on a custom comparator?
- Java HashSet
- Java LinkedHashSet
- Java TreeSet
- Java EnumSet
34. Which of the following Java Set Interface implementations allows only one null element?
- Java HashSet
- Java LinkedHashSet
- Java TreeSet
- Both A and B
31. Which of the following Java Set Interface implementations maintains elements in sorted order based on natural ordering of elements?
- Java HashSet
- Java LinkedHashSet
- Java TreeSet
- Java EnumSet
32. Which of the following Java Set Interface implementations allows elements to be stored in a red-black tree, providing guaranteed logarithmic time complexity for basic operations?
- Java HashSet
- Java LinkedHashSet
- Java TreeSet
- Java EnumSet
33. Which of the following Java Set Interface implementations allows elements to be stored in a hash table that is navigable and allows operations based on the closest match to a given value?
- Java HashSet
- Java LinkedHashSet
- Java TreeSet
- Java NavigableSet
34. Which of the following Java Set Interface implementations allows elements to be stored in a tree-based data structure, providing guaranteed O(log n) time complexity for basic operations?
- Java HashSet
- Java LinkedHashSet
- Java TreeSet
- Java EnumSet
35. Which of the following Java Set Interface implementations provides an iterator that allows elements to be accessed in a forward direction?
- Java HashSet
- Java LinkedHashSet
- Java TreeSet
- All of the above
36. Which of the following Java Set Interface implementations maintains the insertion order of elements?
- Java HashSet
- Java TreeSet
- Java SortedSet
- Java LinkedHashSet
37. Which of the following Java Set Interface implementations allows elements to be accessed in ascending or descending order?
- Java HashSet
- Java TreeSet
- Java NavigableSet
- Both B and C
38. Which of the following Java Set Interface implementations allows elements to be stored in a hash table that supports map-like operations on keys?
- Java HashSet
- Java EnumSet
- Java TreeSet
- None of the above