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Question 1:  What is a key difference between WeakMap and Map in JavaScript?

(A) WeakMap keys can be primitive values

(B) WeakMap does not allow object keys

(C) WeakMap keys must be objects

Question 2:  What type of values can be stored in a WeakSet?

(A) Only primitive values

(B) Only objects

(C) Both objects and primitive values

Question 3:  Can you iterate over the elements of a WeakSet?

(A) Yes using forEach

(B) Yes using for of loop

(C) No

Question 4:  What happens when an object in a WeakMap is no longer referenced elsewhere?

(A) It is automatically garbage collected

(B) It stays in memory forever

(C) It causes an error

Question 5:  Which of the following methods is available in WeakMap?

(A) forEach

(B) get

(C) map

Question 6:  Can WeakMap keys be garbage collected if they are not referenced elsewhere?

(A) No

(B) Yes

(C) Only in strict mode

Question 7:  Which is true about WeakSet in JavaScript?

(A) It supports primitive values

(B) It allows duplicate entries

(C) It holds weak references to objects

Question 8:  What method is used to add an element to a WeakSet?

(A) insert

(B) add

(C) put

Question 9:  What happens if you try to use a string as a key in WeakMap?

(A) It will be accepted

(B) It will be ignored

(C) It will throw an error

Question 10:  Which is a use case for WeakMap in JavaScript?

(A) Storing configuration for DOM elements

(B) Iterating over large lists

(C) Creating deep copies