Quiz for ArrayList vs LinkedList

Q1: Which of the following allows fast random access?

A. ArrayList B. LinkedList C. HashMap D. TreeSet

Q2: Which is faster for inserting at the beginning?

A. ArrayList B. LinkedList C. Vector D. HashSet

Q3: Which structure is internally used by ArrayList?

A. Linked nodes B. Array C. Hash table D. Tree

Q4: Which structure is internally used by LinkedList?

A. Array B. Linked nodes C. Hash table D. Vector

Q5: Which is better for frequent get operations?

A. LinkedList B. ArrayList C. HashSet D. TreeMap

Q6: Which operation is slower in ArrayList than LinkedList?

A. get(index) B. add(element at end) C. remove(index) D. insert at beginning

Q7: Which class is synchronized by default?

A. ArrayList B. LinkedList C. Vector D. HashMap

Q8: Which list type is more memory efficient?

A. LinkedList B. ArrayList C. HashSet D. Deque

Q9: Which has higher overhead due to node pointers?

A. ArrayList B. HashMap C. LinkedList D. TreeSet

Q10: Which is better for stack-like behavior (LIFO)?

A. ArrayList B. LinkedList C. HashSet D. TreeMap