Most import Data Structure MCQ








 Q.No:1:- What is the index number of the last element of an array with 29 elements? 

    a) 28        b) 29        c) 0      d) NOT 

Answer: A because index value always starts from 0

Q.No:2:-How many bytes are reserved by integer Value in memory?

    a) 4 bytes   b) 2 bytes   c) 8 bytes   d) NOT 

Answer: A because the integer value contains 4 bytes in memory and 32 bits

Q.No:3:- Which of the following accesses the seventh element stored in the array?

    a) Array [7]   b) Array [6]  c) Array [5]   d) Array [9] 

Answer: B because the Seventh element can access from index value 6 and it always starts from 0

Q.No:4:-Step by step solution of any problem is also called?

    a) Algorithm b) Pseudocode  c) Both A&B  d) NOT 

Answer: A

Q.No:5:- Which one is primitive data type?

    a) Array  b) Stack   c) Queue   d) NOT 

Answer: D Because primitive data types are pre-defined data types in c++ like int, float char, etc...

Q.No:6:-Array lower bond is always started from?

    a) 0                b) 1                  c) Both A & B  d) NOT. 

Answer: B

Q.No:7:-when we declare int variable like int a=10;, How much space is reserved by this variable?

    a) 4 bytes b) 32 bits     c) Both A&B  d) NOT 

Answer: B Because the 10 is int value and int value contains 4 bytes and we know that 1 byte =8 bit so 4 bytes = 32 bits

Q.No:8:- variable is used to store address/reference of another variable?

    a) Simple Variable   b) Pointer Variable      c) Both A&B  d) NOT  

Answer: B Because Pointer variable used to store another variable address

Q.No:9:-Address of any variable must be in which Form?

    a) Natural    b) Hexadecimal  c) Whole Number d) NOT 

Answer: B Because When we store any single variable so it addresses in Hexadecimal form use this program and get the address of x variable 

 #include <iostream>

using namespace std;

int main() {

int  x = 27;  

      

cout << "Value of x is : "<<&x<<endl;

return 0;

}

   

Q.No:10:- A linear collection of data elements where the linear node is given by means of pointer is called?

    a) Linked List b) Node List c) Primitive List  d) AOT 


Answer: A

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