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Solved Questions Paper-2 UGC-NET Computer Science November 2017

11.'ptrdata' is a pointer to a data type. The expression *ptrdata++ is evaluated as (in C++):
A.*(ptrdata++)
B.(*ptrdata++)
C. *(ptrdata)++
D.Depends on compiler
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Explanation
12.The associativity of which of the following operators is Left to Right, in C++?
A.Unary Operator
B.Logical not
C.Array element access
D.address of
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13.A member function can always access the data in ................ , (in C++).
A.the class of which it is member
B.the object of which it is a member
C.the public part of its class
D.the private part of its class
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Explanation
14.Which of the following is not correct for virtual function in C++?
A.Must be declared in public section of class.
B.Virtual function can be static.
C.Virtual function should be accessed using pointers.
D.Virtual function is defined in base class.
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Explanation
15.Which of the following is not correct (in C++)?
A.Class templates and function templates are instantiated in the same way.
B.Class templates differ from function templates in the way they are initiated.
C.Class template is initiated by defining an object using the template argument.
D.Class templates are generally used for storage classes.
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Explanation
16.Which of the following is/are true with reference to 'view' in DBMS?
(a) A 'view' is a special stored procedure executed when certain event occurs.
(b) A 'view' is a virtual table, which occurs after executing a pre-compiled query.
Code:
A.Only (a) is true
B.Only (b) is true
C.Both (a) and (b) are true
D.Neither (a) nor (b) are true
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Explanation
17.In SQL, .................. is an Aggregate function.
A.SELECT
B.CREATE
C.AVG
D.MODIFY
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18.Match the following with respect to RDBMS:
List - I
(a) Entity integrity
(b) Domain integrity
(c) Referential integrity
(d) Userdefined integrity
List - II
(i) enforces some specific business rule that do not fall into entity or domain
(ii) Rows can't be deleted which are used by other records
(iii) enforces valid entries for a column
(iv) No duplicate rows in a table
Code:
(a) (b) (c) (d)
A.(iii) (iv) (i) (ii)
B.(iv) (iii) (ii) (i)
C.(iv) (ii) (iii) (i)
D.(ii) (iii) (iv) (i)
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19.In RDBMS, different classes of relations are created using ................... technique to prevent modification anomalies.
A.Functional Dependencies
B.Data integrity
C.Referential integrity
D.Normal Forms
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Explanation
20................... SQL command changes one or more fields in a record.
A.LOOK-UP
B.INSERT
C.MODIFY
D.CHANGE
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Author Does Not claim of any answer these answers are as per expert opinion

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