Question 1

Every node in a linked list has two components: one to store the relevant information and one to store the address.

Accepted Answer

Each node in a linked list typically contains two parts: the data part, which stores the relevant information, and the pointer part, which stores the address of the next node in the sequence, facilitating the link between consecutive nodes.

Question 2

The order of the nodes in a linked list is determined by the data value stored in each node.

Accepted Answer

The order of the nodes in a linked list is determined by the pointers (or references) in each node that point to the next node in the sequence, not by the data values stored in the nodes.

Question 3

The address of the first node in a linked list is stored in a separate location, called the head.

Accepted Answer

The head of a linked list refers to the pointer or reference that stores the address of the first node, allowing access to the entire list.

Question 4

In computer memory, the memory addresses are in binary.

Accepted Answer

Memory addresses in a computer are indeed represented in binary because computers use a binary numbering system for all their operations, including addressing memory locations.

Question 5

Each node of a linked list has at least four components.

Accepted Answer

A typical node in a singly linked list has two components: the data and a reference (or pointer) to the next node. In a doubly linked list, a node has three components: the data, a reference to the next node, and a reference to the previous node.

Question 6

The link component of each node is a pointer.

Accepted Answer

In data structures, the link component of each node in a linked list is indeed a pointer that points to the next node in the sequence, facilitating traversal through the list.

Question 7

Operations such as search, insert, and delete require a linked list to be sorted.

Accepted Answer

Operations such as search, insert, and delete can be performed on both sorted and unsorted linked lists, although their implementations might differ based on the list's organization.

Question 8

Building a linked list forward places the new item to be added at the beginning of the linked list.

Accepted Answer

Building a linked list forward typically involves adding the new item at the end of the list, not the beginning.

Question 9

Building a linked list backwards places the new item to be added at the end of the linked list.

Accepted Answer

Building a linked list backwards typically involves adding the new item at the beginning of the list, making it the new head, which is more efficient than adding it at the end.

Question 10

In general, there are three types of linked lists-sorted, unsorted and mixed.

Accepted Answer

Linked lists are typically categorized by their structure, not by the order of their elements. The main types are singly linked lists, doubly linked lists, and circular linked lists.

Question 11

The algorithms to implement the operations search, insert, and remove are the same for sorted and unsorted lists.

Accepted Answer

In sorted lists, search operations can be more efficient (e.g., binary search) compared to unsorted lists where a linear search is typically used. Similarly, insert and remove operations in sorted lists require maintaining the order, which is not a concern in unsorted lists.

Question 12

To simplify operations such as insert and delete, you can define the class to implement the node of a linked list as a struct.

Accepted Answer

Defining a node of a linked list as a struct simplifies the implementation of operations like insert and delete because a struct can easily encapsulate the data and the pointer(s) to the next node(s), making the code more organized and manageable.

Question 13

To delete a given item from an ordered linked list, there is no need to search the list to see whether the item to be deleted is in the list.

Accepted Answer

To delete a given item from an ordered linked list, it is necessary to search the list to find the item before it can be deleted, as you need to know its position and potentially update the pointers of the adjacent nodes.

Question 14

In a doubly linked list, every node contains the address of the next node (except the last node), and every node contains the address of the previous node (except the first node).

Accepted Answer

In a doubly linked list, each node has two links: one points to the next node in the sequence (except for the last node, which points to null), and the other points to the previous node (except for the first node, which also points to null), allowing traversal in both directions.

Question 15

A doubly linked list is a linked list in which every node has a next pointer and a null pointer.

Accepted Answer

A doubly linked list is a linked list in which every node has two pointers: one pointing to the next node and another pointing to the previous node, not a null pointer.

Question 16

A linked list is a random access data structure such as an array.

Accepted Answer

A linked list does not allow random access to its elements like an array does; instead, it requires sequential access to reach a particular element.

Question 17

Every element in an STL list points to its immediate predecessor and to its immediate successor.

Accepted Answer

In an STL list, each element is typically implemented as a node in a doubly linked list, where each node contains a pointer to its immediate predecessor (previous node) and its immediate successor (next node), allowing bidirectional traversal.

Question 18

To access the fifth element in a list, we must first traverse the first four elements.

Accepted Answer

In a list, elements are accessed by their index, starting from 0. To access the fifth element, you need to reference index 4, which implies traversing the first four elements.

Question 19

In the STL container list, the function push_front adds an element at the beginning of the list.

Accepted Answer

The function push_front is specifically designed to add an element at the beginning of a list in the Standard Template Library (STL).

Question 20

In an ordered list, the header node at the beginning of the list typically contains a value smaller than the smallest value in the data set.

Accepted Answer

The header node in an ordered list typically contains a sentinel value that is smaller than the smallest value in the data set. This sentinel value is used to mark the beginning of the list and to simplify the insertion and deletion of elements.

Quiz 5: Linked Lists