Saturday, 11 April 2015

UGC NET Computer Science Questions Paper II June 2008 - Part 2

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
Answer: D
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=a+2;
(C) a=p;
(D) p=&a[2];
Answer: C
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
Answer: B
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.
Answer: C
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.
Answer: C
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
Answer: D
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
Answer: B
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
Answer: B
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
Answer: B
20.    Consider the query : SELECT student_name FROM student_data WHERE rollno (SELECT rollno FROM student_marks WHERE SEM1_MARK=SEM2_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.
Answer: C

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