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IP Addresses And Subnet Masks

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Addressing for intranets (and the Internet) explained TCP/IP is the networking protocol of the Internet, and by extension of intranets. For TCP/IP to work, your network interfaces need to be assigned IP addresses. Note that we said network interfaces and not computers. The IP addresses are assigned to interfaces and not to computers. So, one computer can have more than one IP address. For example, if you have two network cards on your computer, then each of them can have a different IP address either static or dynamic (more about that in a minute). Similarly, if you have a proxy server running, then the machine on which it is installed should have a static IP address. Now, the same machine has to establish a dial-up link to the Internet through, say VSNL. Then the dial-up adapter would be assigned a different dynamic address. What's an IP address? An IP address is a number that represents a device like a network card uniquely on the Internet or on your company's int...
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what is a printer?

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A printer is a device that accepts text and graphic output from a computer and transfers the information to paper, usually to standard size sheets of paper. Printers vary in size, speed, sophistication, and cost. In general, more expensive printers are used for higher-resolution color printing. Features of impact Printer The general features of impact printer are- They create the characters by striking  the paper. They print on most types of paper. Multiple (carbon) copies may be printed at once Disadvantages of impact printers They are relatively slow They do not print transparencies (documents printed on clear plastic film for use with over head projector. Dox –matrix are impact printer that draw a character from a series of dots. They are suitable for draft copies and home use, where the quality of finished document is not critical. They are also use for preparing of bills and invoices in hospital because they are cheap and durable. Other printer- las...
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Computer Memory

Memory is the best essential element of a computer because computer can’t perform simple tasks. The performance of computer mainly based on memory and CPU. Memory is internal storage media of computer that has several names such as majorly categorized into two types, Main memory and Secondary memory. 1. Primary Memory / Volatile Memory. 2. Secondary Memory / Non Volatile Memory. 1. Primary Memory / Volatile Memory: Primary Memory also called as volatile memory because the memory can’t store the data permanently. Primary memory select any part of memory when user want to save the data in memory but that may not be store permanently on that location. It also has another name i.e. RAM. Random Access Memory (RAM): The primary storage is referred to as random access memory (RAM) due to the random selection of memory locations. It performs both read and write operations on memory. If power failures happened in systems during memory access then you will lose your dat...
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