Interview Questions.

Question 1. Memory Management In C ?

Answer :

The C programming language manages reminiscence statically, mechanically, or dynamically. 
Static-duration variables are allocated in fundamental memory, generally along with the executable code of this system, and persist for the lifetime of this system
Automatic-length variables are allotted at the stack and are available and cross as capabilities are called and go back. 
For static-duration and automatic-duration variables, the size of the allocation is required to be bring together-time consistent.
Dynamic reminiscence allocation wherein memory is greater explicitly (but more flexibly) managed, generally, by means of allocating it from the heap, an area of reminiscence dependent for this reason.
In C, the library function malloc is used to allocate a block of reminiscence at the heap. The application accesses this block of reminiscence thru a pointer that malloc returns. When the reminiscence is no longer wished, the pointer is passed to unfastened which deallocates the memory so that it could be used for other functions.
Question 2. Functionality Of Operating System?

Answer :

An operating system (OS) is a fixed of software that manages computer hardware sources and offers not unusual offerings for computer applications. 

 To act as interface among hardware and users, an working gadget should have the ability carry out the subsequent capabilities:

 1. Enabling startup utility packages. Thus, the operating machine need to have:

A text editor
A translator
An editor of hyperlinks
 2. The allocation of sources needed to execute applications is carried out through identifying: the applications which can be running, the need for reminiscence, peripheral gadgets and records protection requirements.

Three. Facilities for records compression, sorting, mixing, cataloging and preservation of libraries, thru software packages available.

4. Plan implementation works in step with positive standards, for green use of important processing unit.

5. Assisting implementation of applications thru laptop-consumer communique gadget, at both hardware and software program stage.

Examples of working structures:BS2000,BS3000,DOS,PC-DOS,MS-DOS,LINUX,SOLARIS,MAC OS,UNIX,WINDOWS

Network Technical Support Interview Questions
Question three. What Is The Use Of Ip Address.?

Answer :

An Internet Protocol address (IP address) is a numerical label assigned to each tool (e.G., computer, printer) taking part in a laptop community that makes use of the Internet Protocol for conversation.An IP address serves two main capabilities: host or network interface identity and region addressing.

Question 4. What Is Difference Between Unique And Primary Key Constraints?

Answer :

A UNIQUE constraint is just like PRIMARY key, however you could have multiple UNIQUE constraint per table. Contrary to PRIMARY key UNIQUE constraints can be given NULL however just as soon as. If the constraint is described in a mixture of fields, then every discipline can receive NULL and may have a few values on them, as long as the mixture values is unique.

SAP BASIS Tutorial
Question 5. What Are The Steps Involved In Designing?

Answer :

Project plan, Requirements, Design, Coding, Testing, Re-coding and design, Development, Maintenance.

Computer Technical Support Interview Questions
Question 6. What Is The Difference Between Interface And Multiple Interface?

Answer :

Both an abstract elegance and an interface are specific kinds of laptop objects that permit a programmer to loosely define one sort of item as if it have been any other type, whilst maintaining all of the object's authentic homes. While a couple of different pc languages use one or each of these concepts, Java is the maximum famous. Abstract training and interfaces have a diffusion of similarities, however additionally incorporate enormous differences in shape, syntax, and usage.

Question 7. How Can We Delete Duplicate Row In Table?

Answer :

SQL> delete from table_name where rowid not in (pick out max(rowid) from table institution with the aid of duplicate_values_field_name);

SAP ABAP Tutorial Oracle Interview Questions
Question eight. When Do You Use Sql Profiler?

Answer :

SQL Profiler utility allows us to basically track connections to the SQL Server and also decide activities which includes which SQL Scripts are jogging, failed jobs etc.

Question nine. What Do You Meant By Active And Passive Objects?

Answer :

Active gadgets are one that instigate an interaction which owns a thread and they're accountable for managing control to other items. In simple words it is able to be referred as patron.

Passive gadgets are one, which passively waits for the message to be processed. It waits for every other object that calls for its offerings. In easy words it could be referred as server.

SAP BASIS Interview Questions
Question 10. What Do You Meant By Static And Dynamic Modeling?

Answer :

Static modeling is used to specify structure of the gadgets that exist inside the trouble domain. These are expressed the usage of magnificence, object and USECASE diagrams.

But Dynamic modeling refers representing the object interactions at some point of runtime. It is represented by using collection, pastime, collaboration and statechart diagrams.

Oracle 11g Tutorial
Question eleven. What Is Program Counter?

Answer :

Program counter holds the deal with of both the primary byte of the subsequent instruction to be fetched for execution or the cope with of the next byte of a multi byte training, which has now not been absolutely fetched. In both the cases it receives incremented automatically one after the other because the practise bytes get fetched. Also Program sign in keeps the address of the subsequent guidance.

SAP ABAP Interview Questions
Question 12. Can You Give An Example Of Stored Procedure?

Answer :

CREATE technique - is a stored system, that's a stored collection of Transact-SQL statements which can take and go back user-supplied parameters.

Network Technical Support Interview Questions
Question 13. Benefits Of Stored Procedures?

Answer :

Reduced consumer/server visitors
Efficient reuse of code and programming abstraction
Enhanced safety controls
Question 14. Is Xml Case-sensitive?

Answer :

XML is case sensitive when uppercase and lowercase characters are handled otherwise.

Element kind names, Attribute names, Attribute values, All wellknown and parameter entity names, and facts content material (text), are case-touchy.

Question 15. What Is A Null Object?

Answer :

It is an item of some class whose cause is to signify that a actual object of that magnificence does now not exist. One common use for a null object is a go back cost from a member feature that is supposed to go back an object with a few certain houses however can not find such an object.

Oracle 11g Interview Questions
Question 16. What Is The Property Of Class?

Answer :

A assets is a member that provides get admission to to an characteristic of an item or a class. Examples of houses encompass the period of a string, the dimensions of a font, the caption of a window, the call of a patron, and so forth.

Question 17. Does A Class Inherit The Constructors Of Its Super Class?

Answer :

A magnificence does now not inherit constructors from any of its excellent classes.

Java Developer Interview Questions
Question 18. If A Class Is Declared Without Any Access Modifiers, Where May The Class Be Accessed?

Answer :

A magnificence that is declared without any get entry to modifiers is stated to have package get entry to. This way that the elegance can most effective be accessed with the aid of different instructions andinterfaces which are described within the equal package.

Computer Technical Support Interview Questions
Question 19. What Do You Mean By Stack Unwinding?

Answer :

It is a manner all through exception coping with while the destructor is referred to as for all nearby items between the area wherein the exception turned into thrown and in which it's miles stuck.

Question 20. Define Precondition And Post-situation To A Member Function.?

Answer :

Precondition: A condition that must go back real whilst a member feature is invoked. In order to use a function effectively a precondition need to return true. If a precondition fails to preserve, an operation will not take responsibility to perform any motion of sensibility. For example, the interface invariants of stack magnificence reply not anything approximately pushing despite the fact that the stack is already complete. In this situation, sinful () is a precondition for push operation.

Post-Condition: A condition that have to return real before returning from an invoked function. In order to use a characteristic effectively a publish situation must go back actual. Taking a stack for instance, is empty () need to always be genuine after pushing the element into the stack when an detail is pushed. The feature is empty () is a submit situation.

Technical Support Interview Questions
Question 21. What Is Dom?

Answer :

The Document Object Model (DOM) is a pass-platform and language-independent conference for representing and interacting with gadgets in HTML, XHTML and XML documents.[1] Objects in the DOM tree can be addressed and manipulated by the use of strategies at the objects. The public interface of a DOM is specified in its software programming interface (API).

Question 22. How Macro Execution Is Faster Than Function ?

Answer :

Difference among overloading and overriding in programming language is:

In overloading, there's a courting between methods available inside the same magnificence whereas in overriding, there is courting among a superclass technique and subclass method.
Overloading does not block inheritance from the superclass whereas overriding blocks inheritance from the superclass.
In overloading, separate strategies share the equal name while in overriding, subclass method replaces the superclass.
Overloading should have distinct method signatures whereas overriding ought to have identical signature.
Question 23. Name The Operators That Cannot Be Overloaded.?

Answer :

There are five operators which cannot be overloaded. They are:

.* - magnificence member get right of entry to operator 
:: - scope resolution operator 
. - dot operator 
?:: - conditional operator 
Sizeof() - operator 
Note:- This is viable handiest in C++.

TCS Technical Interview Questions
Question 24. What Is Polymorphism?

Answer :

In programming languages, polymorphism way that a few code or operations or items behave in another way in one-of-a-kind contexts.

For instance, the + (plus) operator in C++:

four + five

3.14 + 2.Zero

s1 + "bar"

In C++, that type of polymorphism is called overloading.

Typically, when the time period polymorphism is used with C++, however, it refers to the usage of digital strategies, which we're going to speak quickly.

Oracle Interview Questions
Question 25. What Are The Differences Between A C++ Struct And C++ Class?

Answer :

The default member and base class access specifiers are extraordinary.
The C++ struct has all the capabilities of the elegance. The best variations are that a struct defaults to public member access and public base elegance inheritance, and a category defaults to the private get right of entry to specifier and private base class inheritance.