TCS NQT Programming MCQ
Ques 1. In a doubly circular linked list what will be the contents of right address field of last node?
a) NULL
b) Garbage value
c) Depends on User
d) Address of first node ✅
Ques 2. Which combination of the integer variables a, b and c makes the variable m get the value 4 in the following expression? m = (a> b)? ((a>c)? a:c): (( b>c) ? b:c) ?
a) a=6, b=3, c=5
b) a=3, b=4. c=2 ✅
c) a=5, b=4, c=5
d) a=6, b=5, c=3
Ques 3. A connected graph has 3 regions and 8 edges. Find the number of vertices.
a) 11
b) 8
c) 5
d) 7 ✅
Ques 4. When we sort the given elements by using bubble sort, then in third pass/iteration how many comparisons should we perform?
25,17,31,13,2
a) 2
b) 4
c) 1
d) 3 ✅
Ques 5. What will be output of below snippet?
class Test {
public static void main(Stringſ args) throws NullPointerException{
int a [] = {1,2};
System.out.println("Hello");
System.out.println("User");
System.out.println(a[1]);
}
}
O/p : ? Hello
User
2
Ques 6. Suppose we initialize array like int a[5]={10,20,30};
Then what will happen?
a) First two elements will be zero
b) Last two elements will be zero ✅
c) Remaining elements will be garbage elements
d) Error message from the compiler
Ques 7. When we execute the given code which character will be printed?
int main(){
char *name={"abc",
"def",
"ghi",
"jk"};
printf("%c",*name[2]+2);
return 0;
}
O/P: ? Error
Ques 8. What will be the output of below code?
import java.util.*;
public class Main
static int sample(){
return (true ? null : 0);
}
public static void main(String[] arr){
System.out.println(Main.sample());
}
}
a) Compile Time Error
b) Runtime ✅
c) 0
d) NULL
Explanation:
Exception in thread "main" java.lang.NullPointerException
at Main.sample(Main.java:4)
at Main.main(Main.java:7)
Ques 9. Consider following tree, what will be in order for traversal?
a) 5,6,8,9,17,10,18,20,23,24,25,29
b) 5,6,8,9,10,17,18,20,23,24,25,29
c) 5,6,8,9,18,10,17,23,20,24.25,29
d) 5,6,8,9,10,17,20,18,23,24,25,29
Ques 10. The tool that depicts progress of tasks against time, is called as:
a) Mentimeter
b) Bar Chart
c) Polygraph
d) Gantt Chart ✅
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