**UGC NET JUNE 2013 SYLLABUS, MODEL PAPER/ PREVIOUS YEARS SOLVED QUESTION PAPERS.**

**UGC NET (NATIONAL ELIGIBILITY TEST) : OLD SOLVED/PREVIOUS EXAM QUESTION PAPERS WITH SOLUTIONS AND EXPLANATIONS AND FREE STUDY MATERIALS.**

**COMPUTER MEMORY BASED PREVIOUS YEARS SOLVED PAPERS I, II AND III TO PREPARE AND PASS THE UGC NET/SLET ENTRANCE EXAMINATION WITH HIGH PERCENTAGE.**

**COMPUTER BASIC QUESTIONS FOR BANK EXAM, HTAT, CTAT, TAT, UGC-NET, INTERVIEW AND OTHER EXAM'S, WHERE BASIC QUESTION'S ARE REQUIRED.**

Move mouse over your answer to see your answer is right or wrong.

1. Which of the following does not define a tree ?

(A) A tree is a connected acyclic graph.

(B) A tree is a connected graph with n21 edges where ‘n’ is the number of vertices in the graph.

(C) A tree is an acyclic graph with n21 edges where ‘n’ is the number of vertices in the graph.

(D) A tree is a graph with no cycles.

2. The complexity of Kruskal’s minimum spanning tree algorithm on a graph with ‘n’ nodes and ‘e ’ edges is :

(A) O (n)

(B) O (n log n)

(C) O (e log n)

(D) O (e)

3. If a code is t-error correcting, the minimum Hamming distance is equal to :

(A) 2t+1

(B) 2t

(C) 2t-1

(D) t-1

4. The set of positive integers under the operation of ordinary multiplication is :

(A) not a monoid

(B) not a group

(C) a group

(D) an Abelian group

5. In a set of 8 positive integers, there always exists a pair of numbers having the same

remainder when divided by :

(A) 7

(B) 11

(C) 13

(D) 15

6. An example of a tautology is :

(A) x v y

(B) x v (~y)

(C) x v (~x)

(D) (x5>y)v(x<5y)

7. Among the logic families RTL, TTL, ECL and CMOS, the fastest family is :

(A) ECL

(B) CMOS

(C) TTL

(D) RTL

8. The octal equivalent of the hexadecimal number FF is :

(A) 100

(B) 150

(C) 377

(D) 737

9. The characteristic equation of a T flip flop is given by :

(A) QN115TQN

(B) QN115T1QN

(C) QN115Tr QN

(D) QN115T1QN

10. The idempotent law in Boolean algebra says that :

(A) ~(~x)5x

(B) x1x5x

(C) x1xy5x

(D) x(x1y)5x

11. What is the effect of the following C code ?

for(int i=1; i<=5; i=i+½)

printf(“%d,”,i);

(A) It prints 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, and stops

(B) It prints 1, 2, 3, 4, 5, and stops

(C) It prints 1, 2, 3, 4, 5, and repeats forever

(D) It prints 1, 1, 1, 1, 1, and repeats forever

12. Consider the following declaration in C :

char a[];

char *p;

Which of the following statement is not a valid statement ?

(A) p=a;

(B) p=a12;

(C) a=p;

(D) p=&a[2];

13. Consider the following C code :

{

int a=5, b=9;

float r;

r=b/a;

}

What is the value of r ?

(A) 1.8

(B) 1.0

(C) 2.0

(D) 0.0

14. Function overloading is a concept in which :

(A) a function is used to implement lots of tasks at the same time.

(B) a function is called too many number of times by another function.

(C) a function provides common interface to the user to carry out possibly different

functions in each call.

(D) a function is computationally too expensive for the system to handle.

15. Which of the following is true ?

(A) A “static” member of a class cannot be inherited by its derived class.

(B) A “static” member of a class can be initialized only within the class it is a member of.

(C) A “static” member of a class can be initialized before an object of that class is created.

(D) Since “static” member of a class is actually a global element, it does not require a

class/object qualifier to access it independently of class/object.

Move mouse over your answer to see your answer is right or wrong

16. A superkey for an entity consists of :

(A) one attribute only

(B) at least two attributes

(C) at most two attributes

(D) one or more attributes

17. Which of the following set of keywords constitutes a mapping in SQL ?

(A) SELECT, FROM, TABLE

(B) SELECT, FROM, WHERE

(C) CONNECT, TABLE, CREATE

(D) SELECT, TABLE, INSERT

18. If a relation is in 2NF then :

(A) every candidate key is a primary key

(B) every non-prime attribute is fully functionally dependent on each relation key

(C) every attribute is functionally independent

(D) every relational key is a primary key

19. Which of the following is true ?

(A) A relation in 3NF is always in BCNF

(B) A relation in BCNF is always in 3NF

(C) BCNF and 3NF are totally different

(D) A relation in BCNF is in 2NF but not in 3NF

20. Consider the query :

SELECT student_name FROM student_data WHERE rollno

(SELECT rollno FROM student_marks WHERE SEM1_MARK5SEM2_MARK); Which of the following is true ?

(A) It gives the name of the student whose marks in semester 1 and semester 2 are same.

(B) It gives all the names and roll nos of those students whose marks in semester 1 and semester 2 are same.

(C) It gives the names of all the students whose marks in semester 1 and semester 2 are same.

(D) It gives roll numbers of all students whose marks in semester 1 and semester 2 are same.

21. Which of the following data structures is most efficient in terms of both space and time

to reverse a string of characters ?

(A) Linked list

(B) Stack

(C) Array

(D) Tree

22. Which of the following can be the sequence of nodes examined in a binary search tree

while searching for key 98 ?

(A) 100, 50, 75, 60, 98

(B) 100, 120, 90, 95, 98

(C) 200, 70, 100, 95, 98

(D) 75, 150, 90, 80, 98

23. Which of the following is true for a sorted list with ‘n’ elements ?

(A) Insertion in a sorted array takes constant time.

(B) Insertion in a sorted linear linked list takes constant time.

(C) Searching for a key in a sorted array can be done in O(log n) time.

(D) Searching for a key in a sorted linear linked list can be done in O(log n) time.

24. Files that are related to input/output and are used to model serial I/O devices such as

terminals, printers and networks are called :

(A) regular files

(B) character special files

(C) directories

(D) block special files

25. An example of a possible file attribute is :

(A) minimum size

(B) permanent flag

(C) archive flag

(D) EBCDIC flag

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