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Communication Standards & Protocols

Communication Standards Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo. Communication Protocols Introduction Definition Protocols are the set of rules and encoding specifications which are used by computers on the network that communicate between hardware and software entities for sending Read more…

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Magnetic/Hard Disk

Hard Disk Introduction A modern computer uses two types of magnetic memory: – Magnetic Disks: Magnetic disks are the most common form of non-volatile secondary storage because they provide fast access and high storage capacities at a reasonable cost. Examples are – Hard disks and Floppy disks. Magnetic Tapes : Read more…

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Optical Memory

Introduction Optical storage devices have a higher storage density at a lower cost. A CD/DVD-ROM can be used as an main optical storage device. Many software companies provides both operating system and application or driver software on CD/DVD-ROMs today. This optical memory technology has been act as the main catalyst Read more…

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Cache Memory

Introduction An another type of high speed memory, known as Cache memory, which is used to increase the speed of processing by making current programs and data available to the CPU at a rapid rate. Cache memory is a relatively small, high speed memory that stores the most recent used Read more…

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Main Memory

Introduction It is considered as the busiest memory in the computer. It is a fast and large memory but is slower than processor/cache memory. Primary memory has faster access time, smaller storage capacity and higher cost per bit storage. This memory is accessed directly by the processor to retrieve data. Read more…

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Firewall

History of Firewall The term firewall was applied in the late 1980s to computer network technology fields. Introduction of Firewall The firewall is the first line of defense for any computer system or a computer network. A firewall typically establishes a barrier between a trusted network and an untrusted network(internet).  Read more…

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