Synchronization and Critical Section Problem

Synchronization    A cooperating process is one that can affect or be affected by other processes executing in the system. Cooperating processes can directly share a logical address space (that is, both code and data) or be allowed to share data only through files otherwise messages. The former case is achieved through the use of threads, discussed in this. Concurrent access to shared data may result in data inconsistency, however. In this we have discuss various mechanisms to ensure the orderly execution of cooperating processes that share a logical address space so that…Read more

Validation Testing

What is the validation testing? Explain alpha and beta testing? Validation testing begins at the culmination (climax) of integration testing when individual components have been exercised software is completely assembled as package and interfacing error have been uncovered and correct. Testing focuses on the user visible action and user recognizable output from system. Validation can be defined as that of the validation succeeds when software functions in a manner that can be reasonably expected by the customer. These are known all about the validation testing. There are some validation criteria these criteria are…Read more

Basics of Testing

Errors and Testing Humans make errors in the thoughts, in their actions, and in the products that might result from Their actions. Humans can make errors in a field. Ex: observation, similarly even in software development. Example: An instructor administers a test to determine how well the students have understood what the instructor wanted to convey a tennis coach administers a test to determine how well the understudy makes a serve. Errors, Faults and Failures Error:  This is occurs in the process of writing a program Fault: this is a manifestation of one or…Read more

The Process Model

This article states that functioning of process model and various process model used in software engineering .This article explain use of this model in software development life cycle (SDLC) in simple lucid language.  The major and commonly used process models should be adapted for uses by a software project team. To achieve this, process technology tools have been developed which helps software development organizations to 1. Analyze current process 2. To organize their work task or activities. 3. Keep control monitor and progress 4. help to reduce development time and cost There is…Read more

Buy Website Traffic: How to succeed in getting targeted traffic

Running a website for business is not an easy task. Making a targeted traffic to visit your website is tricky. With simple solutions it is possible to generate a lot of traffic. While considering these solutions you must be aware of differences between dense traffic and optimal traffic. The paid PPC campaign solutions work best. You can think of newsletters and marketing websites for getting visitors. But a big wallet and careful planning is essential when you are considering it. While purchasing traffic clicks in bulk sounds good, but in reality it’s the…Read more

Incremental Process Models

   Initially in the software development, there are some situations in which requirement collected in the beginning are reasonably well-defined But at same time overall scope of the development effort stops a purely linear process. There may be a forceful need to provide a limited set of software functionality to users very fast and then refine and expand on that functionality after software releases.   Fig 1.3 phases of incremental model and working   In these types of situations a process model that is designed to produce the software is incremental model. The…Read more

The Spiral Model

       Boehm has proposed the spiral model .Spiral models software process is combination of an iterative nature of prototyping and controlled and systematic aspects of the traditional waterfall model. This model is able to produce rapid development in more complicated version of software. IN SPIRAL MODEL, software development takes place in a series of developed releases. In initial stage iterations, the release or model might be presented on a paper or may be a prototype model. These are kind of designing stages. In the later stages when completing stages comes software…Read more

AES Encryption

 Introduction AES stands for Advanced Encryption Standard. AES is a symmetric key encryption procedure which will swap the generally utilized Data Encryption Standard (DES).  It was the consequence of a worldwide call for submissions of encryption calculations issued by the US Government's National Institute of Standards and Technology (NIST) in 1997 and finished in 2000.  The winning calculation, Rijndael, was produced by two Belgian cryptologists, Vincent Rijmen and Joan Daemen.   AES furnishes solid encryption and has been chosen by NIST as a Federal Information Processing Standard in November 2001 (FIPS-197), and in June…Read more

What is Uninterrupted Power Supply?

This article gives the information of “Uninterrupted Power Supply (UPS)”. UPS is a device connected between the electric power source and computer to ensure that electrical flow is not interrupted. An uninterrupted power supply (UPS) also known as an Uninterrupted Power Source or a battery backup is a device which maintains a continuous supply of electric power to connected equipment by supplying power from a separate source when utility power is not available. An alternative power source, usually a set of batteries, used to power a computer if the normal power services is…Read more

Polymorphism & Virtual Functions in C++

What is polymorphism? Object oriented programming language supports the concept of polymorphism which is characterized by the phrase “one interface multiple methods “. In simple term polymorphism is the attribute that allows one interface to control access. in another words polymorphism means to take more than one form . For example an operation may demonstrate different behaviour according to the exact nature of situation .  For example consider operation draw a shape if there are three operands then it will draw a triangle, if there are two operands then operation will draw line.…Read more