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Network A system of interconnected computers and computerized peripherals such as printers is called computer network. This interconnection among computers facilitates information sharing among them. Computers may connect to each other by either wired or wireless media. A computer network consists of a collection of computers, printers and other equipment that is connected together so that they can communicate with each other.  

Network application
A Network application is any application running on one host and provides a communication to another application running on a different host, the application may use an existing application layer protocols such as: HTTP(e.g. the Browser and web server), SMTP(e.g. the email-client). And may be the application does not use any existing protocols and depends on the socket programming to communicate to another application. So the web application is a type of the network applications. 
There are lots of advantages from build up a network, but the th…

What if Analysis

What-If Analysis
Excel 2016: What-if Analysis
What-If Analysis in Excel allows you to try out different values (scenarios) for formulas. The following example helps you master what-if analysis quickly and easily. 
Use scenarios to consider many different variables 
A scenario is a set of values that Excel saves and can substitute automatically in cells on a worksheet. You can create and save different groups of values on a worksheet and then switch to any of these new scenarios to view different results. 

Create Different Scenarios 

Note: You can simply type in a different revenue and Cost into cell B2 and B3 respectively to see the corresponding result of a scenario in cell B4. However, what-if analysis enables you to easily compare the results of different scenarios.  

I. On the Data tab, click What-If Analysis and select Scenario Manager from the list. The Scenario Manager Dialog box appears
 II. Add a scenario by clicking on Add. 
III. Type a name (e.g. “First Case”), select cell B2 and B3 (represents “Revenue” and “Cost” respectively) for the Changing cells and click on OK. 
IV. Enter the corresponding value 1,50,000 and 1,34,000 then click on OK again. 
V. Next, add few other scenarios (Second, Third and Fourth). 
VI. Finally, your Scenario Manager should be consistent with the picture below:
Note: to see the result of a scenario, select the scenario and click on the Show button. Excel will change the value of cell C2 and C3 accordingly for you to see the corresponding result on the sheet. VII. Scenario Summary a. To easily compare the results of these scenarios, execute the following steps. b. Click the Summary button in the Scenario Manager. c. Next, select cell B4 (profit) for the result cell and click on OK. Scenario summary report:
NOTE   Scenario reports are not automatically recalculated. If you change the values of a scenario, those changes will not show up in an existing summary report. Instead, you must create a new summary report. 
Use Goal Seek to find out how to get a desired result 
If you know the result that you want from a formula, but you are not sure what input value the formula requires to get that result, you can use the Goal Seek feature. For example, suppose that you need to have a fixed Profit for your organization. You know how much money your organization have as Gross Revenue, You can use Goal Seek to estimate the Cost so as to achieve the required profit and meeI. On the Data tab, click What-If Analysis, Goal Seek. t your Goal.  
III. Select cell B4. 
IV. Click in the 'To value' box and type 30000. 
V. Click in the 'By changing cell' box and select cell B3. VI. Click OK. 
VII. Result. The company cost needs to be 70000 so as to get profit of Rs30000. 


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