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Tag: Digital communication

What is Common Gateway Interface (CGI)

The Common Gateway Interface (CGI) is an accepted standard for interfacing Web servers and external applications. Web servers and external applications. Web servers were originally designed to serve static HTML documents along with other associated static files. A web browser that communicates with a Web server limits its functionality to serving static pages. It displays…

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Digital communication

Virtual Reality Modeling Language – DC

Virtual worlds are created using a computer language called Virtual Reality Modeling Language (VRML). this language instructs computers on how to build 3D geometric objects. VRML is a 3D equivalent to HTML, but with more capabilities than just putting a 3D shop on your web page. Imagine the Internet as a place where you could…

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Digital communication

Introduction to Multimedia – Digital Communication

A very dramatic and remarkable part of the Internet is its multimedia capability. Listening to music sound clips and live radio stations from your computer, makes you enjoy the capability of the Internet. Using your computer and the Internet together has made you listen to live concerts being broadcasted somewhere on the Internet. and you…

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Digital communication

What is CRYPTOGRAPHY and its Types

In networking and telecommunications, the data transmitted over a network in such a way that if the data is captured but it cannot be read by unauthorized users. What is Cryptography? Cryptography is the science of information security. it is closely related to the disciplines of cryptology (it is mathematics, such as a number theory…

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Digital communication

Information Privacy & Copyright Issues

Privacy means the concept in which users ‘ data such as stored files, e-mail, etc. are not be seen by any other person without the main user’s permission. in other words, it is private communication accomplished when the sender and intended receiver can read the message. in this section, important points related to privacy such…

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Digital communication

Internet Security & Authentication Methods

When we use a computer system which is connected to the internet we are able to reach different sites. one system which is connected to the internet can be reached by another system by the same protocol. when we download any information from the Internet, our first incentive is about the security of our computer…

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Digital communication

Types of Firewalls | Digital Communication

Firewalls are hardware and software combinations that are built using routers, servers, and a variety of software. they sit at the most vulnerable point between a corporate network and the internet and they can be as simple or complex as system administrators want to build them. firewall reduces the speed of access to networks. Every…

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Digital communication

Internet Security Threats

Due to the widespread use of PCs and development in networks connecting PCs to company’s mainframe computers, there has been an increase in the chances of feeding undesirable data deliberately by outsiders. a person with a PC at a remote place can use a phone line and illegally collect information without leaving any clues. individual…

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Digital communication

Client-Server Architecture and its Applications

The concept of client/server processing has emerged as a higher level of shared device processing typically found in Local Area Networks (LANs). In a shared-device LAN processing environment, PCs are attached to a system device that allows them to share a common resource – a file on a hard disk and printer are typical examples….

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Digital communication

What is Network Architecture

Network architecture refers to the physical layout of the computer connection and the logical method of their communication. the first part is known as topology or physical connection. the second part is known as protocols. Topology is the arrangement of a network. the topology can refer to the physical layout of the network (10BASE2, 10BASE-T)…

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Digital communication

Domain Name System (DNS) and Workgroup

The domain is a logical grouping of file servers within a network, managed as an integrated whole. However, Microsoft defines a domain as a “logical grouping of users and computers organized for administrative purposes”. What is a Domain Name System (DNS)? DNS is a distributed database system that works at the transport layer to provide…

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Digital communication

Access Methods in Networking

Networking Terminology refers to the things that are used to communicate like Nodes, Media, Servers, Hosts, and Workstations. let’s take a brief look at each of them. Nodes The PCs and the server are known as network devices or network nodes. In general, a device or node is connected directly to the network cable or…

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Digital communication

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