Q. Select the correct differences between char and varchar datatypes?

1. varchar is non unicode and char is unicode character datatype
2. char is ‘n’ bytes whereas varchar is actual length in bytes of data entered in terms of storage size
3. varchar is variable in length and char is the fixed length string
4. For varchar, if a string is less than the maximum length then it is stored in verbatim without any extra characters while for char if a string is less than the set length it is padded with extra characters to equalize its length to given length

View solution

Q. Which is the String method used to compare two strings with each other ?

View solution

Q. For two strings s1 and s2 to be equal, which is the correct way to find if the contents of two strings are equal ?

View solution

Q. Correct statement about strings are ?

View solution

Q. Verbatim string literal is better used for ?

View solution

Q. Why strings are of reference type in C#.NET ?

View solution

Q. Storage location used by computer memory to store data for usage by an application is ?

View solution

Q. DIFFERENCE BETWEEN KEYWORDS ‘VAR’ AND ‘DYNAMIC’ ?

View solution

Q. Are the given codes :

1. Myclass class;
Myclass class2 = null;
2. int i;
int j = 0;

View solution

Q. Scope of variable is related to definition of variable as:

a. Region of code within which variable value is valid and hence can be accessed.
b. No, relation with region where variable is declared its value is valid in entire scope.

View solution

Q. Syntax for declaration and initialization of data variable is :

View solution

Q. Choose effective differences between ‘Boxing’ and ‘Unboxing’.

View solution

Q. Select differences between reference type and value type :

1. Memory allocated to ‘Value type’ is from heap and reference type is from ‘System. ValueType’
2. Memory allocated to ‘Value type’ is from ‘System. ValueType’ and reference type is from ‘Heap’
3. Structures, enumerated types derived from ‘System. ValueType’ are created on stack, hence known as ValueType and all ‘classes’ are reference type because values are stored on heap

View solution

Q. What is the need for ‘Conversion of data type’ in C#?

View solution

Q. Types of ‘Data Conversion’ in C#?

View solution

Q. Implicit Conversion' follows the order of conversion as per compatibility of datatype as :

View solution

Q. Subset of ‘int’ datatype is :

View solution

Q. Type of Conversion in which compiler is unable to convert the datatype implicitly is ?

View solution

Q. Disadvantages of Explicit Conversion are ?

View solution

Q. Correct order of priorities are :

View solution