Commvault Written Test Qs.(Data Structures) :: Linked Lists - Discussion

Assume single linked list pseudo code as follows?

struct Node {
data
next
}
record List {
Node firstNode
}

function1(List list) {
obsoleteNode = list.firstNode; list.firstNode = list.firstNode.next; free obsoleteNode;
}

function2(node node) {
obsoleteNode = node.next; node.next= node.next.next; free obsoleteNode;
}

function3(Node node,Node newNode) {
newNode.next = node.next;node.next= newNode
}

function4(List list, Node newNode) {
newNode.next = list.firstNode; list.firstNode = newNode;
}