22. A pointer variable whose sole purpose is to locate the first node in a linked list is calledb. the node's linka. the list's topc. the list's linkd. the list's head23. Which of the following will be true when the pointer variable cur references the last node ina linear linked list?c. head == NULLa. cur == NULLb. cur->next == NULLd. head->next == NULL24. Which of the following statements deletes the first node of a linear linked list that has 10nodes?a. head->next - cur->next;b. head - head->next;c. prev->next - cur->next;d. head NULL;25. An array-based implementation of an linked lista. requires less memory to store an item than a pointer-based implementationb. is not a good choice for a small listd. has items which explicitly point to the next itemsc. has a variable access time26. In a pointer-based implementation of an linked list,.a. increasing the size of the list can waste storage and timeb. less memory is required to store an item than in an array-based implementationc. an item explicitly points to the next itemd. items can be accessed directly with equal access time27. Which of the following statements inserts a new node, pointed to by newPtr, at the end of alinear linked list?a. newPtr->next = cur;prev->next = newPtr;b. newPtr->next = head;head - newPtr;c. newPtr->next - NULL;d. prev->next = cur;newPtr->next = cur;28. In a linear linked list,.a. the next pointer of each node has the value NULLb. the last node points to the first nodec. the precede pointer of the dummy head node points to the last noded. the next pointer of the last node has the value NULL

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Answered: 22. A pointer variable whose sole…

22. A pointer variable whose sole purpose is to locate the first node in a linked list is called a. the list's top c. the list's link b. the node's link d. the list's head

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

22. A pointer variable whose sole purpose is to locate the first node in a linked list is called
b. the node's link
a. the list's top
c. the list's link
d. the list's head
23. Which of the following will be true when the pointer variable cur references the last node in
a linear linked list?
c. head == NULL
a. cur == NULL
b. cur->next == NULL
d. head->next == NULL
24. Which of the following statements deletes the first node of a linear linked list that has 10
nodes?
a. head->next - cur->next;
b. head - head->next;
c. prev->next - cur->next;
d. head NULL;
25. An array-based implementation of an linked list
a. requires less memory to store an item than a pointer-based implementation
b. is not a good choice for a small list
d. has items which explicitly point to the next items
c. has a variable access time
26. In a pointer-based implementation of an linked list,.
a. increasing the size of the list can waste storage and time
b. less memory is required to store an item than in an array-based implementation
c. an item explicitly points to the next item
d. items can be accessed directly with equal access time
27. Which of the following statements inserts a new node, pointed to by newPtr, at the end of a
linear linked list?
a. newPtr->next = cur;
prev->next = newPtr;
b. newPtr->next = head;
head - newPtr;
c. newPtr->next - NULL;
d. prev->next = cur;
newPtr->next = cur;
28. In a linear linked list,.
a. the next pointer of each node has the value NULL
b. the last node points to the first node
c. the precede pointer of the dummy head node points to the last node
d. the next pointer of the last node has the value NULL

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