UGC NET CS 2015 Dec - II

Question 11

Consider the following program :

#include <stdio.h>
main( )
{
    int i, inp;
    float x, term=1, sum=0; 
    scanf(“%d %f ”, & inp, &x);
    for(i=1; i<=inp; i++)
    {
      term = term * x/i; 
      sum = sum + term ;
    }
   printf(“Result = %f\\n”, sum);
}

The program computes the sum of which of the following series?

• x + x²/2 + x³/3 + x⁴/4 +...
• x + x²/2! + x³/3! + x⁴/4! +...
• 1 + x²/2 + x³/3 + x⁴/4 +...
• 1 + x²/2! + x³/3! + x⁴/4! +...

Question 12

Consider the following two statements: (a)A publicly derived class is a subtype of its base class. (b)Inheritance provides for code reuse.

• Both the statements (a) and (b) are correct.
• Neither of the statements (a) and (b) are correct
• Statement (a) is correct and (b) is incorrect
• Statement (a) is incorrect and (b) is correct.

Question 13

Consider a “CUSTOMERS” database table having a column “CITY” filled with all the names of Indian cities (in capital letters). The SQL statement that finds all cities that have “GAR” somewhere in its name, is:

• Select * from customers where city = ‘%GAR%’;
• Select * from customers where city = ‘$GAR$’;
• Select * from customers where city like ‘%GAR%’;
• Select * from customers where city as ‘%GAR’;

Question 14

match the following datbase terms to their function:

• (1)

• (2)

• (3)

• (4)

Question 15

In general, in a recursive and non-recursive implementation of a problem (program) :

• Both time and space complexities are better in recursive than in non-recursive program.

• Both time and space complexities are better in non-recursive than in recursive program

• Time complexity is better in recursive version but space complexity is better in non-recursive version of the program.

• Space complexity is better in recursive version but time complexity is better in non-recursive version of the program.

Question 16

In C++, which system - provided function is called when no handler is provided to deal with an exception?

• terminate ( )
• unexpected ( )
• abort ( )
• kill ( )

Question 17

Which of the following provides the best description of an entity type?

• A specific concrete object with a defined set of processes (e.g. Jatin with diabetes)
• A value given to a particular attribute (e.g. height - 230 cm)
• A thing that we wish to collect data about zero or more, possibly real world examples of it may exist
• A template for a group of things with the same set of characteristics that may exist in the real world

Question 18

Data which improves the performance and accessibility of the database are called:

• Indexes
• User Data
• Application Metadata
• Data Dictionary

Question 19

A relation R = {A, B, C, D, E, F,G} is given with following set of functional dependencies: F = {AD → E, BE → F, B → C, AF → G} Which of the following is a candidate key ?

• A
• AB
• ABC
• ABD

Question 20

Which of the following services is not provided by wireless access point in 802.11 WLAN ?

• Association
• Disassociation
• Error correction
• Integration