How-To

How to remove windows default share?

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Windows default share C$, D$ etc are recreated on machine restart or restarting the server service. To remove these share we can add a batch file which will remove the share. This batch file can be executed every time the machine is restarted by placing it in startup folder. Create a batch file with following […]

Software Testing

Saving perfmon data

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If you are using perfmon tool in windows, you may sometime want to save the data for future analysis. To accomplish this you need to follow the following steps.   Launch the perfmon tool.  To open Performance Monitor, click Start, click in the Start Search box, type perfmon, and then press ENTER. Add the counter […]

How-To

MAC Address Spoofing

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To change MAC-Address for a Network card in Windows Registry: Click Start – Run, type “regedit” Navigate to [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318] HKEY_LOCAL_MACHINE \SYSTEM \CurrentControlSet \Control \Class \{4D36E972-E325-11CE-BFC1-08002BE10318} 3. Under this key, you shoud see numbers in sequence as “0000″, “0001″ and so on. Click on one at a time to check the description of the device to […]

Software Testing

Load Testing using The Grinder

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Introduction The Grinder is an open source load testing tool. The Grinder uses Jython scripts and the scripts are executed using agents which can be distributed over the network. Property file is used to define tests and load. The Grinder framework comprises three types of process or programs; Worker Process: Interpret Jython test scripts and […]

Electronics

Basic Power supply circuits Part 1

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To understand power supply circuits, we need to understand rectifiers. A rectifier converts AC or alternating current to DC direct current. Rectifiers are used in Power supply circuits which we will discuss in detail. The process of converting AC to DC is called Rectification. Half wave rectification. It requires only single diode. Only positive cycle […]