Software Engineering

haha no1 knows

Some software engineers work in one place, but many will work in various locations and so will have to travel.

A page fault occurs. The service routine chooses a page to use. If that page is dirty, i.e. has been written to and needs to be saved, then it is written to the page file. Then the new saved copy is loaded from either the page file or from the executable file. The page registers are updated, and the faulting instruction is retried.

They are essentially the customers. They are the people that will have to use the software being developed. They need to be able to express their opinions on what they are getting. They need to advise the developers and point out any problems they have with the system as it is developed. They can point out mistakes that the developers are making. If they are not involved, then the system that the developers produce is less likely to meet the requirements of the users. The users will find it harder to use. They will have no preview of the system. A lot of the problems they will find then, could have been fixed much earlier if they were involved. This would save time and money for the development process. Users may feel a system is being imposed on them if they have no input into its development. So for all of these and other reasons, it is important that they are involved.

In C++, names are either statically bound at compile time, dynamically bound at runtime or (with compile time computation) not bound at all.

With respect to functions, dynamic binding only occurs when a function is invoked through a function pointer. This also applies to virtual functions because the virtual function table (vtable) is simply a list of function pointers that apply specifically to the runtime class of the object the function is invoked against. If we do not know the runtime type (the actual type) of an object at compile time, then we cannot statically bind a virtual function call at compile time. Instead, the compiler must generate code to perform a vtable lookup and then invoke the appropriate function dynamically. However, if the runtime type is known at compile time, then we can statically bind to a virtual function.

Static binding is faster than dynamic binding because we eliminate the indirection required to invoke a function via a pointer variable. Although we can write code to determine the runtime type of an object and thus statically bind all function calls, the overhead far outweighs the otherwise trivial cost of an indirection.

In the case of recursive functions, dynamic binding can only occur if we invoke the function through a function pointer. Once invoked, all recursive calls to that same function are statically bound:

unsigned object::fact (unsigned x) {

return x<2 ? 1 : x * (fact (x-1));

}

Here, the name fact used within the function is implicitly bound to this->fact and is therefore statically bound to object::fact. The initial invocation may or may not have been dynamically bound, but that has no bearing once the function is invoked.

If a function is declared constant expression (constexpr) and is used in a constant expression, the function call (and its binding) can be eliminated completely. Consider the following:

constexpr unsigned fact (const unsigned num) {

return num < 2 ? 1 : num * fact (num - 1);

}

void f () {

unsigned x = fact (7);

// ...

}

A good compiler will replace all of the above with the following:

void f () { unsigned x = 5040;

// ...

}

This is known as compile-time computation. We get the convenience of a function (even a recursive one) but with none of the runtime cost. And since the function is not required at runtime, there is nothing to bind to. However, constant expression functions are useful in that they can also be used in expressions that are not constant. For example:

void g (unsigned x) {

unsigned y = fact (x);

// ...

}

The above call to fact cannot be computed at compile time because x is not constant, so the compiler must statically bind the function instead. Thus we get the advantage of compile time computation when it is possible to do so and static binding when it is not.

If we wish to prevent static binding completely, then we need to use template metaprogramming instead:

template<unsigned N>

constexpr unsigned fact() {

return N * fact<N-1>();

}

template<>

constexpr unsigned fact<1>() {

return 1;

}

template<>

constexpr unsigned fact<0>() {

return 1;

}

Note that we must use specialisation to handle the end cases (where N is 0 or 1). It is not as elegant as the plain constexpr version, however it does guarantee that we only use compile time computation rather than static binding:

void h (unsigned x) {

unsigned y = fact<7>(); // OK: generates equivalent code to unsigned x = 5040;

unsigned z = fact<x>(); // error: x is not constexpr

// ...

}

#include<iostream.h>

#include<conio.h>

#include<process.h>

#define SIZE 10

int queue[SIZE];

int front=-1,rear=-1;

void insert();

void del();

void display();

void main()

{

int ch;

do

{

clrscr();

cout<<"\nMAIN MENU."<<endl;

cout<<"\n1. Insert."<<endl;

cout<<"\n2. Delete."<<endl;

cout<<"\n3. Display."<<endl;

cout<<"\n4 Exit.\n"<<endl;

cout<<"\nEnter your choice.(1-4) : ";

cin>>ch;

switch(ch)

{

case 1 : insert();

break;

case 2 : del();

break;

case 3 : display();

break;

case 4 : exit(0);

default : cout<<"\nInvalid Choice.";

}

getch();

}

while(1);

}

void insert()

{

int val;

if(rear==SIZE-1)

{

cout<<"OVERFLOW."<<endl;

return;

}

cout<<"\nEnter the value : ";

cin>>val;

if(rear==front)

{

rear++;

front++;

queue[rear]=val;

}

else

{

rear++;

queue[rear]=val;

}

}

void del()

{

if(front==-1)

{

cout<<"\nQueue is empty.";

return;

}

if(front==rear)

front=rear=-1;

else

front++;

}

void display()

{

int front_vir=rear;

if(front==-1)

{

cout<<"\nQueue is empty.\n";

return;

}

while(front_vir<=rear)

{

cout<<queue[front_vir]<< " ";

front_vir++;

}

}

Stegnography is defined as the art of hiding information, data or messages in an image. Even the different file formats can be used for the purpose of hiding the information like for example the video or audio etc. The purpose is to pass on the information with out any regard or knowledge of others safely to the destination. The advantage of stegnography is that those who are outside the party even do not realize that some sort of communication is being done.

You will either get a mine, number or it will stay blank. GOOD LUCK

Background of the Study :

Why did you conduct the study?

States the rationale of the study. It explains briefly why the investigator chose this study to work on.

While testing an application, we try to see if a certain set of requirements are met by the application or not. But, when it comes to a user facing site then apart from concentrating on functionality software testing services provider have to look into few usability features, performance and security involved with the application.

Let's take an example of a loan management site, with functionality perspective we look whether the new customers able to apply the loan or not.

We need to test ease of using the site too. For example - if a user has to go through 2-3 pages just to fill the basic information then it is possible that they may get annoyed. So, such issues should also be addressed.

Testing the performance of site completely might not be in scope but we can test few areas to check its performance at peak hours. Similar the case with sites where secure access is involved we can test whether the application gets auto-logout successfully or not if the site remains idle for particular time period (say: 10 minutes).

In this way, we can easily figure out how important it is when it comes to user facing site.

Hope this information is helpful for you.

The Linear sequential model suggests a systematic sequential approach to software development. That begins at the system level and progresses through analysis, design, coding, testing, and support.

Smoke testing will be conducted to ensure whether the most

crucial functions of a software work, but not bothering

with finer details.

A Sanity test is used to determine a small section of the application is still working after a minor change. Smoke Testing: Smoke testing is nothing but to test the functionality of the software once build is done. Sanity testing: Sanity testing is nothing but to test the existing behaviour of an application, environment check up before starts execution.

This is a term from Object Oriented Programming. It refers to the ability of a function or procedure to accept and correctly process parameters of different Types declared in different Classes. It requires an ability to perform what is called runtime dispatching to call the correct actual function or procedure declared within the matching Class, out of all possible Classes.

Fish

I would have to say either a Windows OS or a Linux OS because from the extent of my knowledge, a software engineer creates software based programs in a variety of languages and they need to be supported which can be easily done in either of the 2 OS's

My best bet would be Linux because Linux is a lot more stable (less crashes then Windows), and the user interface on a Linux is similar to a Windows OS, so you will still know what you are doing and how to navigate around.

The operating system you use should be the same one you are programming for. And since you can find work programming for any of the major platforms, you should be safe by sticking to the one you are most used to using.

he will have no idea what he is trying to accomplish. the first stage is requirements analysis.

Years ago on Wall Street in NYC I did some carpentry work during summer out of college. My job for 1 week was to sand fine a wall made from Brazilian Rosewood which was 12 feet high x 25 feet wide. Very tough to work with and I had to be very careful not to gouge the wood with a belt sander.

When completed it was the most beautiful natural grain wood I had ever seen used in this manner.

software engineering is the the management of different phases in SDLC to give a quality product. Software manufacturing refers to the whole process from scratch to end.

Efficiency

First generation (1940-1956) Vaccum Tubes

Second Generation(1956-1963)Transistors

Third Generation(1964-1971)Integrated circuits

Fourth Generation(1971-present)Microprocessors

We already know about some of the early computers - ENIAC , EDVAC , EDSAC , UNIVAC I and IBM . These machines and others of their time used thousands of vacuum tubes . A vacuum tube was a fragile glass device , which used filaments as a source of electronics and could control and amplify electronic signals . It was the only high-speed electronic switching device available in those days . These vacuum tube computers could perform computations in milliseconds and were referred to as first generation computers.

SONET (Synchronous Optical Networking) is used for transferring multiple digital bit data streams via lasers or light-emitting diodes (LEDs) through the one optical fiber. This is SONET's function, and it is therefore essentially focused on the physical medium of the process, being concerned with media, signal and binary transmission.

OSI (Open Systems Interconnection), on the other hand, is an abstract description for the design model of a 'background' computer network protocol, using different syntax and semantics to communicate between its different levels or 'layers'.

An OSI system is a 'seven-layer/level' design model: # Physical Layer # Data Link Layer # Network Layer # Transport Layer # Session Layer # Presentation Layer # Application Layer

At its first level, i.e. the Physical Layer, SONET is just an example one of the many systems that could be appropriately enhanced by an OSI-modelled/structured program.

For more information, see Related links below this box.

A polygon is any shape with three straight lines and three angles. Shapes such as squares, rectangles, triangles, and pentagons are the most common types of polygons.

A: A mother board contains many cards and the communication of these card is essential. What he is looking for a fast I/O BUSS and after that for potential slot expansion.

i really dont thing so!