|
|
C/C++, Java Visual Basic Interview Questions (SQL, Oracle,
Pro*C/C++)
O n e S m a r t C l i c k . C o m
C/C++ Questions
These are sample questions. Personally I hate
asking questions related to code. If you want some old
question papers of some Indian IT industries , You many find
it here
- What is the output of printf("%d")
- What will happen if I say delete this
- Difference between "C structure" and "C++ structure".
- Diffrence between a "assignment operator" and a "copy
constructor"
- What is the difference between "overloading" and
"overridding"?
- Explain the need for "Virtual Destructor".
- Can we have "Virtual Constructors"?
- What are the different types of polymorphism?
- What are Virtual Functions? How to implement virtual
functions in "C"
- What are the different types of Storage classes?
- What is Namespace?
- What are the types of STL containers?.
- Difference between "vector" and "array"?
- How to write a program such that it will delete itself
after exectution?
- Can we generate a C++ source code from the binary file?
- What are inline functions?
- Talk sometiming about profiling?
- How many lines of code you have written for a single
program?
- What is "strstream" ?
- How to write Multithreaded applications using C++?
- Explain "passing by value", "passing by pointer" and
"passing by reference"
- Write any small program that will compile in "C" but not
in "C++"
- Have you heard of "mutable" keyword?
- What is a "RTTI"?
- Is there something that I can do in C and not in C++?
- Why preincrement operator is faster than postincrement?
- What is the difference between "calloc" and "malloc"?
- What will happen if I allocate memory using "new" and
free it using "free" or allocate sing "calloc" and free it
using "delete"?
- What is Memory Alignment?
- Explain working of printf.
- Difference between "printf" and "sprintf".
- What is "map" in STL?
- When shall I use Multiple Inheritance?
- What are the techniques you use for debugging?
- How to reduce a final size of executable?
- Give 2 examples of a code optimization.
Java Interview Questions
- Meaning - Abstract classes, abstract methods
- Difference - Java,C++
- Difference between == and equals method
- Explain Java security model
- Explain working of Java Virtual Machine (JVM)
- Difference : Java Beans, Servlets
- Difference : AWT, Swing
- Disadvantages of Java
- What is BYTE Code ?
- What gives java it's "write once and run anywhere"
nature?
- Does Java have "goto"?
- What is the meaning of "final" keyword?
- Can I create final executable from Java?
- Explain Garbage collection mechanism in Java
- Why Java is not 100% pure object oriented language?
- What are interfaces? or How to support multiple
inhertance in Java?
- How to use C++ code in Java Program?
- Difference between "APPLET" and "APPLICATION"
Visual Basic Interview Questions
- 3 main differences between flexgrid control and dbgrid
control
- ActiveX and Types of ActiveX Components in VB
- Advantage of ActiveX Dll over Active Exe
- Advantages of disconnected recordsets
- Benefit of wrapping database calls into MTS transactions
- Benefits of using MTS
- Can database schema be changed with DAO, RDO or ADO?
- Can you create a tabletype of recordset in Jet -
connected ODBC database engine?
- Constructors and distructors
- Controls which do not have events
- Default property of datacontrol
- Define the scope of Public, Private, Friend procedures?
- Describe Database Connection pooling relative to MTS
- Describe: In of Process vs. Out of Process component.
Which is faster?
- Difference between a function and a subroutine, Dynaset
and Snapshot,early and late binding, image and picture
controls,Linked Object and Embedded Object,listbox and combo
box,Listindex and Tab index,modal and moduless window,
Object and Class,Query unload and unload in form,
Declaration and Instantiation an object?
- Draw and explain Sequence Modal of DAO
- How can objects on different threads communicate with
one another?
- How can you force new objects to be created on new
threads?
- How does a DCOM component know where to instantiate
itself?
- How to register a component?
- How to set a shortcut key for label?
- Kind of components can be used as DCOM servers
- Name of the control used to call a windows application
- Name the four different cursor and locking types in ADO
and describe them briefly
- Need of zorder method, no of controls in form, Property
used to add a menus at runtime, Property used to count
number of items in a combobox,resize a label control
according to your caption.
- Return value of callback function, The need of tabindex
property
- Thread pool and management of threads within a thread
pool
- To set the command button for ESC, Which property needs
to be changed?
- Type Library and what is it's purpose?
- Types of system controls, container objects, combo box
- Under the ADO Command Object, what collection is
responsible for input to stored procedures?
- VB and Object Oriented Programming
- What are the ADO objects? Explain them.
- What are the different compatibility types when we
create a COM component?
- What do ByVal and ByRef mean and which is the default?
- What does Option Explicit refer to?
- What does the Implements statement do?
- What is OLE and DDE? Explain.
- What is the difference between Msgbox Statement and
MsgboxQ function?
- What keyword is associated with raising system level
events in VB?
- What methods are called from the ObjectContext object to
inform MTS that the transaction was successful or
unsuccessful?
- What types of data access have you used.
- What was introduced to Visual Basic to allow the use of
Callback Functions?
- Which controls can not be placed in MDI?
- Which controls have refresh method, clear method
- Which Property is used to compress a image in image
control?
- Which property of menu cannot be set at run time?
- Which property of textbox cannot be changed at runtime
and What's the maximum size of a textbox?
- Which tool is used to configure the port range and
protocols for DCOM communications?
| | |
