My Profile
Active Members
TodayLast 7 Days
more...
Awards & Gifts
Online Exams
Fresher Jobs
Our fresher job section is exclusively for fresh graduates! Find jobs for freshers in major Indian
cities including Bangalore, Chennai, Hyderabad, Pune or Kochi
Resources
Find educational articles, blogs, discussion threads and other resources.
Colleges
Find details about any college in India or search for courses.
|
interview questions
Posted Date: 20 Mar 2008 Resource Type: Articles/Knowledge Sharing Category: Placement Papers
|
Posted By: ramya Member Level: Gold
Rating:  Points: 5
|
|
|
What is SQL/J
Answer :
A set of standards that includes specifications for embedding SQL statements in methods in the Java programming language and specifications for calling Java static methods as SQL stored procedures and user-defined functions. An SQL checker can detect errors in static SQL statements at program development time, rather than at execution time as with a JDBC driver.
What is SQL
Answer :
Structured Query Language. The standardized relational database language for defining database objects and manipulating data.
What is Unicode
Answer :
A standard defined by the Unicode Consortium that uses a 16-bit code page that maps digits to characters in languages around the world. Because 16 bits covers 32,768 codes, Unicode is large enough to include all the world’s languages, with the exception of ideographic languages that have a different character for every concept, such as Chinese. For more information, see http://www.unicode.org/.
How many bits are used to represent Unicode, ASCII, UTF-16, and UTF-8 characters?
Answer :
Unicode requires 16 bits and ASCII require 7 bits. Although the ASCII character set uses only 7 bits, it is usually represented as 8 bits. UTF-8 represents characters using 8, 16, and 18 bit patterns. UTF-16 uses 16-bit and larger bit patterns
Difference between bit rate and baud rate.
Answer :
Bit rate is the number of bits transmitted during one second whereas baud rate refers to the number of signal units per second that are required to represent those bits.
baud rate = bit rate / N ,where N is no-of-bits represented by each signal shift.
What is Reference type and value type ?
Answer :
Reference Type: Reference types are allocated on the managed CLR heap, just like object types. A data type that is stored as a reference to the value’s location. The value of a reference type is the location of the sequence of bits that represent the type’s data. Reference types can be self-describing types, pointer types, or interface types
Value Type: Value types are allocated on the stack just like primitive types in VBScript, VB6 and C/C++. Value types are not instantiated using new go out of scope when the function they are defined within returns.
Value types in the CLR are defined as types that derive from system.valueType.
A data type that fully describes a value by specifying the sequence of bits that constitutes the value’s representation. Type information for a value type instance is not stored with the instance at run time, but it is available in metadata. Value type instances can be treated as objects using boxing.
What is the difference between StringBuffer and String class?
Answer :
A string buffer implements a mutable sequence of characters. A string buffer is like a String, but can be modified. At any point in time it contains some particular sequence of characters, but the length and content of the sequence can be changed through certain method calls. The String class represents character strings. All string literals in Java programs, such as “abc” are constant and implemented as instances of this class; their values cannot be changed after they are created.
Name some builtin functions of JavaScript?
JavaScript provides six built-in functions. These functions are unrelated to the built-in objects.
escape (string)
string is a string in the ISO Latin-1 character set.
Returns a string. escape() converts nonalphanumeric characters in string to the form %xx, where xx is the hexadecimal representation of the character’s value. escape() passes alphanumeric characters in string to the return string intact.
eval (string)
string is a string containing a JavaScript statement or expression or sequence of statements.
Evaluates string and returns a value.
isNan (value)
value is a value returned from parseFloat() or parseInt().
Returns true if value is NaN. NaN is a special value returned by parseFloat() and parseInt() to indicate that the evaluated value is not a number. parseFloat() and parseInt() do not return NaN in Windows platforms.
parseFloat (string)
string is a string representing a numric value.
Returns the floating-point number that string represents. It stops parsing string when it encounters a character that is not part of a valid numeric expression. parseFloat() returns NaN (not a number), under all platforms except Windows, if it cannot create a valid floating-point number. parseFloat() returns 0 under Windows when it cannot create a valid floating-point number.
parseInt (string) or parseInt (string, radix)
string is a string representing a numeric value. radix is a nonnegative integer.
Returns the integer that string, in the specified radix, represents. The browser guesses a radix if you omit radix or specify a value of 0. The browser assumes a value of 16 if string begins with 0x, 8 if string begins with 0, and 10 if string begins with any other digit. JavaScript assumes that letters are digits, such as A-F for a radix of 16, when radix is greater than 10. parseInt() returns NaN (not a number), under all platforms except Windows, if it cannot create a valid floating-point number. ParseInt() returns 0 under Windows when it cannot create a valid floating-point number.
Unescape (string)
string is a string that contains sequences of “%number”, where number is a value from 0 to 255, or “0xnumber”, where number is a hexadecimal value from 00 to FF.
Returns a string with the escaped values in string converted to ISO Latin-1 characters.
|
Responses
|
No responses found. Be the first to respond and make money from revenue sharing program.
|
|
Watch TV Channels
|