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### 1.Which of the following data structures are indexed structures

Select one:

A.Linear arrays

B.Tree

C.Linked lists

D.None of these options

Ans: A

### 2.Which of the following is a mathematical-model with a collection of operations defined on that model and their implementations are hidden?

Select one:

A.Primitive Data Type

B.Abstract Data Type

C.Algorithm

D.Data Structure

Ans: B

### 3.The post fix form of the expression (A+ B)*(C*D- E)*F / G Is?

ANS . AB+CD*E – FG/*♦

### 4.The process of accessing data stored in a serial access memory is similar to manipulating data on a particular data structure. Which is that data structure?

ANS – Stack

### 5.Which of the following data structure is better for storing the sorted data on which often Insert and deletion operations are performed?

A.Array

B.Linked list

C.Queue

D.Doubly linked-list

Ans: B

### 6.You have to sort a list ‘L which consists of some sorted elements and few ‘‘random’ elements. Which of the following sorting methods would be especially suitable for such a task?

ANS – Insertion sort

### 7.Time complexities of three algorithms are given. Which should execute the slowest for large values of N?

ans – O(n*2)

### 8.What Is the time complexity for executing merge sort on an array of size n which is already sorted is

ans – O(n log n)

### 9.If the given array is {6,2, 5,1,9 }, the 3rd number from the left while doing bubble sort In the 2nd iteration is

ans – 5

### 10.Jane has created a special type of linked list. That linked list contains no NULL values in its links. If so, what type of linked list is Jane has created?

ans – Circular Linked List

### 11.Choose the scenario(s) when we need to use Linear search?

A.Can use all the time

B.None of these options

C.When the list has only a few elements

D.When performing a single search in an un-ordered list

Ans: D