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Cache Memory

Introduction of Cache Memory Cache memory is popularly called High-Speed Memory. Definition Cache memory is a small, temporary, high-speed memory that stores the most recently used instructions or data from main memory for processing and is placed between the CPU (Central Processing Unit) and the main memory (RAM) in a computer system used to minimize the gap in processing speed between the main memory & CPU. Characteristics Performance: Its primary purpose is to store frequently …

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Main Memory

Introduction Main memory, is often referred to simply as “memory” or “RAM” (Random Access Memory) because data can be accessed in any order, regardless of its physical location in memory. This allows the CPU to quickly retrieve and manipulate data without the need to sequentially read through the entire memory. It plays a critical role in the operation of a computer system by providing fast, temporary storage for data and instructions needed by the CPU during …

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Firewall

History of Firewall The term firewall was applied in the late 1980s to computer network technology fields. Firewalls play a vital role in network security by acting as a first line of defense, preventing unauthorized access, and protecting against various cyber threats. 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). …

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Function of OS

The primary function of an OS is to act as an intermediary between the computer hardware and the applications software. The function of an OS is to provide a stable, efficient, and secure environment for running computer applications and managing computer resources. The OS allocates system resources such as CPU time, memory, input/output devices, and storage devices to running programs. It allocates resources to different applications and manages their use to ensure optimal performance. Here …

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Network Addressing & IP Addressing/IP Classes

Introduction All entities in a data communications network must be uniquely identified to allow data to be directed to the intended recipient. This process is known as “addressing” and the identifier allocated to a node is known as its address. Each node/device is usually allocated at least one address. Definition Network addressing a way to put unique value as addresses to the devices used in a computer network. Thus, it identifies networking devices separately/individually or …

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Routing Algorithms

Introduction Routing algorithms are an important part of modern computer networking, as they enable data to be transmitted efficiently and reliably across complex networks. Routing algorithms are a critical component of computer networking, as they enable data to be transmitted across networks in a fast and efficient manner. Definition A routing algorithm is a set of rules that determine how data packets are forwarded from one network node to another in order to reach their …

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Earlier World Famous Networks

There are so many large and specific networks in the world that performs specific operations. Some of them are public and some are private networks. Among these, it may be research networks, cooperative networks, commercial or corporate networks, etc. These large networks can be distinguished from each other on the basis of their history, administration, facilities/services, offered, technical design, and the people who use them (user communities) etc. There are some unique or specific typical …

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Network Architecture

Introduction A network is designed as a hierarchical or layered architecture in which every module or layer provides services to the upper layer. Users, sitting at the top layer of the network, communicate as if there is a virtual link between them, and need not be aware of the details of the network. Definition Network architecture refers to the overall design and structure of a computer network, including its components, communication protocols, data transmission methods, …

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TCL Statements

Introduction of TCL Statements TCL statements play a crucial role in managing transactions in a DBMS, providing mechanisms to ensure data integrity and consistency. Definition In a Database Management System (DBMS), Transaction Control Language (TCL) statements are used to manage the changes made by Data Manipulation Language (DML) statements. TCL (Transaction Control Language) statements in DBMS (Database Management System) are used to manage transactions within a database. Characteristics TCL statements are essential in managing the integrity …

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