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Showing posts from March, 2016

Explain Deadlock Modelling and Strategies along with an example

As stated in previous topic, in Deadlock situation, a process waits resources which are using by other process without releasing its own resources. It is therefore causes all the processes waiting and waiting for the resources of each other; hence it brings critical condition to make deadlock condition.

In this chapter, we are going to model deadlock condition by using directed graph. Here we use directed graph to show whether it is requesting resources or holding resources. And circle are used to denote process whereas rectangle refers the resources.


Above diagram shows the modelling process of deadlock, it shows requesting and holding of resources in/from a process. In the figure, A process is requesting T resource one time. In the bottom fig, A is holding T resource.


In fact, there is not solution of deadlock condition, that is why it is known as non-resolving situation. But a good programmer must be known with this fact before working on any project. S/he must be careful about th…

Define and explain Deadlock and its conditions

In Operating System, Deadlock is a non-resolving condition in which two or more competing actions are each waiting for the other to finish and thus neither ever does. However, deadlock condition must be prevented before it falls.

Basically, computer system make of resources; the resources of computer system can be categorized into different two types - Software Resources and Hardware Resources. Hardware Resources are external memory, printer, scanner etc. Software Resources are some applications, such as microsoft words, excel, adobe Photoshop etc. In the real time operation, each and every process needs resources that is why process shares the resource to complete the job mostly in multiprogramming system.

In conclusion, deadlock is only then arise if there are 2 process sharing the same resources, in which one process waits to use a resource which is using by another process whereas it itself does not release its own resource.

According to Coffman, deadlock has 4 conditions. They a…

Define Operating System. List out its types and explain services.

Generally, operating system works as an inter-mediator between computer and users. Actually, it is a group of software or applications that handles all the computer hardware and services of computer programs. Allocation of memory and controlling them is one of its basic service. In fact, Operating System can be categorized according to their processing nature and brand.

A. On the basis of processing nature, the types of OS are as follows:

Real Time OSMultitasking OSNetwork OSDistributed OSBatch Processing OS Except these five, there are also other types of operating system like, multi-processing os, multi-programming os etc. However, these are the basic types of Operating System
B. On the basis of brand, the types of OS are categorized as below: Windows OSIphone Operating System (IOS)Android OSMAC OSLinux OSUnix OS These six operating systems are also common types of operating system now available or used in IT field. Among them, IOS, and Android are mostly used as operating system of S…

10 Things That Encourage People To Choose Blogger for Blogging Purpose

Blogger (blogspot) is one of the best blogging platform, and it is one of the best product of Google. Its users have been increasing day by day. Unlike the wordpress, it has some limit features. However, it has many more important merits. Being a product of google, some SEO experts recommend this platform for blogging purpose. Many bloggers choose blogspot because it is a simple freely provided blogging system by google. It facilitates us to choose sub-domain, but you also can add your custom domain name, and it is free of cost. That is why, you do not need to buy any other blogging CMS.

Why to choose blogger for blogging purpose ?
Very simple and easy to useIt is a Free SystemLight weight blogging CMSUnlimited SpaceProvides Free TemplatesSEO Friendly SystemSupports for Adsense MonetizationProvide HTTPs protocol (blog visible in encrypted connection)Provides service to import and export the contentsA product of Google

Database Management System Overview

Database Management Systems is basically called as DBMS, is a software which is used to manage interrelated data and information in order to select, retrieve, and update them back easily. Some components of Database Management Systems are:

Data: Data are raw facts that are collected figure from different sources like reports, statistical, queries etc. It does not have any meaning, that is why it is known as non-processed information. Data can be numbers, words, symbols etc. However, they should not represent some specific meanings.

Information: Information are known as a processed data that have at least one significant meaning.

Database: Database represents a collection of data related to a particular subject. Data and Information contains into database in an organized way. Data of database can be accessed easily. Telephone directory, marks sheet, dictionary etc are the best examples of databases.

CSS 3 Mega Menu For Blogger

CSS stands for Cascading Sheet Style. CSS gives the style to the HTML tags. In earlier phase of web, there had not been developed the CSS 3. Now CSS 3 has reduced the long and vague and more difficult codes of javascript and jquery. CSS 3 is the latest version of CSS.

By the way making mega menu using jquery and javascript is very hard to understand. Most of the designers just copy and paste to use the mega menu. But using CSS 3 is very easy to make mega menu. Here I am just showing tips to create mega menu using CSS 3. Follow the bellow steps and make a mega menu for your blogger and your html/css website.
How to make mega menu using CSS 3?Step 1: Open any platform like Notepad or Dreamweaver. Step 2: Put the below code into the middle of <style> </style>. .main_menu{ background:#006;}
.main_menu ul li a{ font-size:15px; font-weight:bold; text-transform:uppercase; color:#fff; padding-right:25px !important; padding-left:25px !important;}
.main_menu ul li a:hover{ background…

How to Add Search Engine Friendly Post Title

Indeed content is the king in search engine. And then we can say title is the queen. almost more than 70% visitors come from search engine which depends on post title. I think blogger should mostly make attention towards the post title. If they do it, then there need not any other optimization. There should be a particular reason to give your blog high rank by Google. If your content quality is best, then it can be a reason or if you get most visitor by referral or any other techniques. So you have to think about increasing the rank of your blog and getting more traffic by only optimizing your blog post title. Now lets see some tips and tricks that help all all the time to optimize your blog.

What is SEO Friendly Post Title?- Post title is a topic that a blogger is going to write some useful information staying around it.
Title is content itself. The information or content without title can not catch visitors eyes on your posts. So it is fact that you should give a title of your con…

How to add fixed facebook like box in the blogger Right Scroll

One of the most useful and popular way of getting more likes into your business's facebook page is to put facebook like box into your blog or sites. Basically, you should copy the script given by facebook to add facebook like box into your site as documented by Facebook developer. However, there may be difficult to add any facebook plugins in blogger template, because blogger template has xml codes whereas facebook plugins has html and javascript codes.

Different looks of Facebook like box can increase more likes in your business's Facebook page. So you should apply different techniques. Like you can pop up like box and you also can fix facebook like box in blogger. This time, I am giving a block of code that helps you to add fixed facebook like box in the right sidebar of blogger, in which a facebook img is attached. When you point Facebook img, it hovers and slide on left. Then you can see Facebook like box.
Follow the given steps to add fixed Facebook Like Box in the side…