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Grapecity OOPS,C,C++ Paper

Posted on :19-03-2016
PAPER: GRAPE CITY PLACEMENT PAPER (TECHNICAL-OOPS, C, C++ DBMS)

Q1. Is it possible for a member function of a class to activate another member function of the same class?

A. no
B. yes, but only public member functions.
C. Yes, only private member functions
D. Yes, both public & private member functions can be activated

Q2. Can 2 classes contain member functions with the same name?

a. no
b. yes, but only if the 2 classes have the same name
c. yes, but only if the main program does not declare both kinds
d. yes, this is always allowed

Q3. What is the purpose of template functions?

a. to allow a single function to be used with varying types of arguments
b. to hide the same name of the function from the linker
c. to implement container classes
d. to permit the use of the debugger without the "gstabs flag

Q4. What kind of functions can access private member variables of a class

a. friend function of a class
b. private member functions of the class
c. public member functions of the class
e. all of the above
f. none


Q5. What technique is used to step thro items of a container class?

a. copy constructor
b. default constructor
c. iterator (ans)

Q6. What is the term used to describe the situation when a derived class provides a function already provided in the base class ?

a. inheriting
b. overriding
c. abstraction
d. none

Q7. What are the characteristics of object, in general

a. it has name, properties
b. name, properties, behavior
c. it can act on receiving a message
d. a &c
e. b&c

Q8. Bundling data members together with the functions is called

a. data hiding
b. encapsulation (ans)
c. data morphism
d. data binding

Q9. Why is object oriented programming useful?

a. It supports good s/w engg. Practices
b. It promotes thinking about s/w in a way that models the way we think & interact naturally
c. Supports code reuse

A &b
A,b & c

Q10. Suppose u want 2 develop 2 diff, + operators that calculate & return an object of the same class. Which stmt is correct?

a. 1 operator must be a friend & the other must not
b. 1 operator must be public & the other private
c. operators must have different parameter lists
d. it is not possible 2 have 2 different + operators

Q11. What is inheritance?

a. a relationship in which the structure & functionality of a class ("child ) is defined in terms of the structure & functionality of another(parent)
b. a relationship in which the structure & functionality of a class ("parent ) is defined in terms of the structure & functionality of another("child)
c. a relationship in which the structure & functionality of a class make calls 2 functionalty of another
d. a relationship in which the structure of a class includes 1 or more instances of another
e. all of above


Q12. What is relationship between . a class & its public parent class

a. ".is a.
b. "has a
c. "is implemented as a 
d. uses a
e. becomes a

Q13. How does inheritance relate 2 abstraction?

a. a base class is an abstraction of all its derived classes
b. a derived class is an abstraction of all its base classes
d. Base & derived classes are abstractions for each other
e. Inheritance prevents abstraction
f. No relationship between them

Q14. Why cant compiler "hard-code direct calls to virtual functions?

a. Because hard "coding the function. Call would slow compilation of the program too much
b. Because hard "coding the function. Call would slow execution of the program too much
c. Because the correct function. To call generally isnt know at compile "time
d. Because virtual functions are always at compile-time so no run-time code is needed at all.
e. Compiler does hard-code direct calls 2 virtual functions.

Q15. What is accessibility of a protected member of a base class which is inherited privately?


DBMS

Q1. Indexing must be applied on fields that are

a. seldom referenced in query
b. containing few unique columns
c. on frequently searched columns
d. changed frequently

Q2. The relational data model includes several types of data integrity .which type of data integrity is ensured by the use of a primary key?

a. entity integrity
b. domain integrity
c. referential integrity
d. relational integrity

Q3. A student has 3 different Teachers . Each of these teachers has several students. Which type of relationship in relation model would effective represent this?

a. 3 one-to-many relationships
b. two many-to-one relationships
c. a single many-to "many relationships
d. at least 2 many-to-many relationships

Q4. which of the following properties are required of a column or column sets for the column to function as a primary key?

a. no nulls
b. a clustered index
c. a non-clustered index
d. ther must be atleast 1 foreign key on tha same table.

Q5. Select a.pk, fn, b.zip, c.city from a, b, c where a.pk=b.pk
tables a,b,&c each contain 100 rows & the primary key for tables a & b is pk. What is the maximum. No. of rows that could be returned by query

100
0
100,000
10,000
1,000,000

Q8. Which of the following is only used with a foreign key constraint ?

a . primary key constraint
b. the references clause
c. a check constraint

Q9. Which is used to return the no. of rows in a table?

a. select all count from tablename
b. select count(*) from tablename
c. select numrows from table name

Q10. When writing sql queries , how do u control the query execution plan used by the databases

a. query directly against an idex instead of table
b. define a static cursor & specify the "using specific index keyword
c. most databases provide propreitory methods to give database hint
d. enclose quey in atransaction & add a statement using the "set search keyword

Q10. Which is not allowed in a trigger

a. update
b. select into
c. while
d. begin

Q11. Select type, avg(price), min(price) from product group by category,  what is wrong?

C/C++

Q1. When should appointer p be a reference parameter?

A. When function Changes p, & u want the change to affect actual pointer argument
B. When function Changes p, & u do not want the change to affect actual pointer argument
C. When function Changes *p, & u want the change to affect actual pointer argument
D.When function Changes *p, & u do not want the change to affect actual pointer argument
E.when pointer points to large object

Q2. Output?

Int y=1;
Int k=2;
Int *p1;
Int *p2;
P1=&y;
P2=&k;
p1=p2;
*p1=3
*p2=4;
printf("%d,y);

Q3. When should you use a const reference parameter ?

A. whenever the data type might be many bytes
B. whenever the data type might be many bytes, the function Changes the paramter within its body, & u do not want these changes to alter the actual argument
C. whenever the data type might be many bytes, the function Changes the paramter within its body, & u DO want these changes to alter the actual argument


  
   






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