AMU MCA Computer Previous Year Questions (PYQs) – Page 13 of 14
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Showing 137 questions
If every non-key attribute is functionally dependent on primary key, relation is in at least:
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Solution
This condition satisfies 2NF (no partial dependency).
Runtime polymorphism is implemented by:
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Solution
Runtime polymorphism uses Virtual Functions.
Which sorting method is best if number of swapping is only measure of efficiency?
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Solution
Selection sort performs minimum swaps (n−1 swaps).
Maximum number of comparisons needed to sort 7 items using radix sort (each item 4-digit decimal):
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Solution
Radix sort does not compare elements like comparison sort.
Comparisons are not primary operation.
Approx operations = digits × items
= 4 × 7 = 28
What is the output of this C code?
#include <stdio.h>
int main()
{
printf("Hello World! %d \n", x);
return 0;
}
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Solution
Variable x is not declared.
Compiler error will occur.
QoS stands for
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Solution
QoS in networking means Quality of Service.
A graph in which all nodes are of equal degree is called
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Solution
If every vertex has the same degree, it is called a regular graph.
Which of these data types is used by operating system to manage recursion in Java/C/C++?
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Solution
Recursion uses function call stack (LIFO).
What is the binary equivalent of the decimal number 368?
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Solution
$368 = 256 + 64 + 32 + 16$
$= 2^8 + 2^6 + 2^5 + 2^4$
Binary $= 101110000$
Which of the following is not a storage class supported by C++?
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Solution
C++ storage classes: auto, register, static, extern, mutable
dynamic is not a storage class keyword.
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