Multiple Choice Questions 1. Which statement is correct about adding a node to a

Question

Multiple Choice Questions 1. Which statement is correct about adding a node to a linked list? a) You cannot add a new node in a linked list after the linked list is created. b) You can add a node anywhere in a linked list. e) You can add a node only at the beginning of a linked list. d) You can add a node only at the end of a linked list. 2. How can you locate the fifth node in a doubly-linked list named invoices? a) inveicess) b) invoices 4) c) Start at the first node and follow pointers to the next node in the list until the fifth node is located. d) None of the listed options. 3. What is the problem with the fallowing code snippet, which is attempting to locate the first element in the list names? listsstring> names; string firstnamesi

Explanation / Answer

1. In a linked list, we can add a new node anywhere in the list by traversing the list. So option b) is correct.

b) You can add a node anywhere in the linked list.

2. To locate any node we need to traverse the linked from head to next pointers. We could not access any node directly from its index.

So option C) is correct.

c) Start at the first node and follow pointers to the next node in the list until the fifth node is located.

3. We can not access any node directly in the list.

Option b is correct.

b) It is not legal to use the [] operator with a list<string> object.

4. We can assume here that the array is 0-based.

The loop doesn't initialize numarray[0] as cnt start from 1.

Option b is correct.

b) The for loop initializes all elements of array except the first element.

5. parent class cannot access child functions while child class can access parent class functions.

So option b is correct.

b) car.get_speed() and aero.get_speed()

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