How do you link two nodes in a linked list?

• A. Set the link of the first node to point to the second node
• B. Set the first node's data to the second
• C. Point both nodes to null
• D. Use an array to store pointers

Answer: (A)

In a singly linked list, each node has a reference to the next node. Linking two nodes means updating the first node’s next reference to point to the second node. Once you set first.next to second, the list goes from first → second (and from there on, you can continue by connecting the second node to what used to follow the first, if needed).

This is different from copying data, which just duplicates the value inside the node and doesn’t create any connection. It’s also not about making both nodes point to null, which would break the chain. Using an array to store pointers isn’t how you form the linkage inside the list itself; it’s a separate structure used for storage or access, not the act of connecting the nodes in the linked list.