InfoTech

There is a lot of confusion about API. It's hearing like a thunder currently everywhere. Really what is the meaning of API? In this section, you will understand the concept of API in a simple way  What is an API?   API is an acronym for Application Programming Interface which is a set of code or function created for communicating two application with each other. It will take the request from the application interfaces and will send to the server. The server will respond depends upon request. From above image, you can understand very easily. Ok, let we see with an example. Consider weather application.  The purpose of this one will update every sec or min about current weather anywhere in the world. Does anybody think how it's working? How its updating Weather report in every minute? The answer is using API. How API is working? Set of code(API) is implemented into the application interfaces which is taking the request from the u...

ERROR: A mistake in the programming code called as an error. In another way, we can say if an error has happened in the programming code we can't compile or run a program without fixing the error. DEFECT: A Defect is a variance between the actual result and expected results. It will be found in the production line. If the developer finds an issue and corrected himself then its called as a defect. BUG:  It is a big process that handled by the tester. If a defect is accepted by the developer called bug. FAILURE: After product releasing to the end user and if they find any issue then its called as a failure.

In this section, we are going to discuss the difference between system software and application software. Still, most of us have a lot of confusion about these two. I will clarify let me explain What is Software? Software means a set of the program made to complete some task. Its full and full codes. What is hardware? Hardware is physical one that we can touch and feel and made with some electrical components and that have some specific functions. For example Monitor, Pc, Mouse, Electric Board, Printer and etc Now you may think why I included hardware and explained?. The reason is without hardware software won't work same as without related software hardware won't work.  What is system software?  It is the software that used to manage computer resources and essential for the computer to work. It will install automatically when OS installed. See the image OS and utilities are applied in hardware then only it will work. Types: BIOS Ut...

A Filesystem is playing an important role on os. Whenever you installing the os, file system also will install. The main purpose of the file system is organizing the data and store to hard disk. So without the help of file system, we cannot assign data and store the data in the hard disk TYPES OF FILE SYSTEM: FAT (File Allocation Table)--FAT12, FAT16, FAT32 NTFS (New Technology File System) exFAT (extended FAT File System) FAT 32(File Allocation Table): Provide  4GB to 16TB disk size(Perfect for storage device) If file single file size more than 4gb, then it will not support No security and not support for installing OS NTFS(New Technology File System): File size and partition up to 256TB Provide security Quick crash error recovery, backup, encryption include In mac os read-only and Linux write only ExFAT (extended FAT File System) : File size and partition up to 256TB we can copy a large amount of file with the single...

Before going to tell about what is database I would like to demonstrate what is data?. DATA: A fact can be recorded called data. For example music, speech, video, image, text, number these all are called as data. DATABASE:  The collection of related data called database. For example  Collection of Text(Text1,Text2,Text3,...etc) Collection of Image(Image1,Image2,Image3,....etc) Collection of Video(Video1,Video2,Video3,....etc) Collection of Speech(Speech1,Speech2,Speech3,....etx) Collection of Number(Number1,Number2,Number3,...etc) There is a lot of databases maintained by many companies or government for some specific data. It may about text content only or video content only or image content only and etc. TYPES OF DATABASE: TDB(used for storing only text content) GIS(used in the satellite for taking pictures from space and send back) RDB(used in the production line) DW(storing data for future) and so on DATABASE MANAGEMENT SYSTEM(DBM...

Remote desktop connection is the component of Microsoft Windows. The main usage of RDC is connecting the computer from one place to another place(taking control from the computer)over the network. For example, consider you are working in one company. You can access your company system from home. But RDC has some rules. If your going to breaking the rules RDC will automatically terminate(Connection will go down). Setup RDC If you want to connect the two computers using RDC first of all you must have permission to connect otherwise you can not. For permission, you must be on the list of users that which system you want to access using RDC. Make sure your both computer allowing RDC(By default its disable) Go to Start and Right click--Select System--Select Advanced system--Select remote--Select allow and apply Now your both computer is ready to allow RDC. Don't allow to do: Accessing computer A from home using computer B the computer A should be logged ...

Before going to learn about VPN. Please try to understand what is encryption.  Click here: What is Encryption? What is VPN(Virtual Private Network)? VPN is the computer network that will create a layer on the internet(Overlay). Why we need VPN? When we're going to do something personally on the internet everyone can track your activities and IP address at this point VPN is coming to help. Normal Internet connectivities and accessing: Normally when we're going to connect the internet to phone or system internet service provider will provide internet facilities. For example, if your going to connecting internet to mobile using sim then sim is internet service provider Without VPN? Without connecting VPN two members can track our activities and collect the data also. Can you guess who? The first one is a hacker and the second one is the government. So at this point, I want to tell one important thing to you i.e without VPN our da...