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UNDERSTANDING H.323 MODEL IN COMPUTER NETWORK

H.323 is a Recommendation from the ITU Telecommunication Standardization Sector that defines the protocols to provide audio-visual communication sessions on any packet network H. 323 provides standards for equipment, computers and services for multimedia communication across packet based networks and specifies transmission protocols for real-time video, audio and data details. H. 323 is widely used in IP based videoconferencing, Voice…

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NETWORK BRIDGE WINDOWS 10

A network bridge is a computer networking device that creates a single, aggregate network from multiple communication networks or network segments. This function is called network bridging. Bridging is distinct from routing Uses of network Bridges Bridges connects two or more different LANs that has a similar protocol and provides communication between the devices (nodes) in them….

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What Is Hirens Boot CD

Hiren’s Boot CD is a Windows rescue utility that boots from CD or USB. … Hiren’s Boot CD is an all-in-one bootable rescue disc solution that contains a load of useful Windows repair tools you’ll want to have when you can no longer boot into your PC. Imagine issues like hard drive failure, virus infections, partitioning, password recovery, and data recovery. Hiren’s Boot CD…

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NETWORK GATEWAYS EXPLAINED

A gateway is a hardware device that acts as a “gate” between two networks It may be a router, firewall, server, or other device that enables traffic to flow in and out of the network. A gateway is also a piece of networking hardware used in telecommunications for telecommunications networks that allows data to flow from one discrete network to another. Network gateways are used to interconnect…

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What Is Dynamic Routing Protocol In Networking

Definition Of A Router A router is a networking device that receives and sends data on computer networks. Routers are sometimes confused with network hubs, modems, or network switches. However, routers can combine the functions of these components, and connect with these devices, to improve Internet access or help create business networks. How does a router work? Routers guide and direct network data, using…

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What Is a Dumb Terminal In Computer

WHAT IS A DUMB TERMINAL? A dumb terminal is simply an output device that accepts data from the CPU In contrast, a Smart terminal is a monitor that has its own processor for special features such as bold and blinking character Dumb terminals are not as fast as smart terminals, and they do not support as many display features, but they are adequate for most applications.  Uses and Types of…

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Error Detection Codes In Computer Network

Error-detecting codes are a sequence of numbers generated by specific procedures for detecting errors in data that has been transmitted over computer networks. When bits are transmitted over the computer network, they are subject to get corrupted due to interference and network problems. The corrupted bits leads to spurious data being received by the receiver…

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End-To-End Encrypted Data Security

End-to-end encryption or data security is intended to prevent data being read or secretly modified, other than by the true sender and recipient(s). The messages are encrypted by the sender but the third party does not have a means to decrypt them, and stores them encrypted. End-to-end encryption is a secure line of communication that blocks third-party users…

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BEST HARD DISK MONITORING SOFTWARE

You can monitor the performance of your hard disk with hard disk sentinel. It is the best software to monitor the performance of your HDD. Hard Disk Sentinel (HDSentinel) is a multi-OS SSD and HDD monitoring and analysis software. Its goal is to find, test, diagnose and repair hard disk drive problems, report and display SSD and HDD health, performance degradations and…

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What Is Transmission Control Protocol

TCP (Transmission Control Protocol) is a standard that defines how to establish and maintain a network conversation through which application programs can exchange data. TCP works with the Internet Protocol (IP), which defines how computers send packets of data to each other. The Transmission Control Protocol is one of the main protocols of the Internet protocol suite. It originated in…

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What Is An Eavesdropping Attack

Eavesdropping Attack What Is an Eavesdropping Attack? An eavesdropping attack, also known as a sniffing or snooping attack, is a theft of information as it is transmitted over a network by a computer, smartphone or another connected device. The attack takes advantage of unsecured network communications to access data as it is being sent or received by…

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What Is Meant By Ad Hoc Network

Definition of computer network A computer network is a group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes. … They are identified by hostnames and network addresses. What Is an Ad Hoc Network? In computer networking, an ad hoc network refers to a network…

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GENERAL RULES FOR ALL COMPUTER USERS

The underlisted rules will help kep your computer running successfully Handle data appropriately You must be aware that you have special responsibilities when handling sensitive data electronically (e.g. electronic data containing social security numbers, PINs, CU ID numbers, passwords of any nature, health, medical and psychological records, police records, and/or final grades). Employees responsible for…

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Hirens Boot Cd 15.2

Hiren’s Boot CD: What it is and Why You Need it Hiren’s Boot CD is a Windows rescue utility that boots from CD or USB. It’s a must-have for your PC repair kit for when Windows won’t boot. Hiren’s Boot CD is an all-in-one bootable rescue disc solution that contains a load of useful Windows repair tools you’ll want to have when you…

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UNDERSTANDING COMPUTER SECURITY

Computer security, the protection of computer systems and information from harm, theft, and unauthorized use Computer security, cybersecurity or information technology security is the protection of computer systems and networks from the theft of or damage to their hardware, software, or electronic data, as well as from the disruption or misdirection of the services they provide.  There are several types…

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HOW TO UPDATE YOUR ROUTER’S FIRMWARE AND ITS BENEFITS

DEFINITION OF A ROUTER A router is hardware device designed to receive, analyze and move incoming packets to another network It may also be used to convert the packets to another network interface, drop them, and perform other actions relating to a network. The picture shows the Linksys BEFSR11 wireless router and is what many home routers resemble. FIRMWARE DEFINITION Firmware is a software program…

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Ping Command In Cmd

Checking Connectivity with the PING Command As you might know, a submarine can detect a nearby object by using sonar to send out a sound wave and then seeing whether the wave is reflected. This is called pinging an object. Windows Vista has a PING command that performs a similar function. PING sends out a…

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CHECKING AND INSTALLING WINDOWS UPDATE MANUALLY

Windows Update is a free Microsoft service that’s used to provide updates like service packs and patches for the Windows operating system and other Microsoft software. Windows Update can also be used to update drivers for popular hardware devices. Patches and other security updates are routinely released through Windows Update regularly. for urgent fixes. What Is Windows Update Used For? Windows Update is used to…

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HOW TO DETECT AND SOLVE HARD DISK PROBLEMS

Hard disk,a Magnetic storage medium for a microcomputer. Hard disks are flat, circular plates made of aluminum or glass and coated with a magnetic material. Hard disks for personal computers can store up to several gigabytes (billions of bytes) of information. Data are stored on their surfaces in concentric tracks. What is the job of a hard disk? A hard drive is the…

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NETWORK INTERFACE CARD FUNCTIONS AND BENEFITS

A network interface card (NIC) is a hardware component without which a computer cannot be connected over a network. It is a circuit board installed in a computer that provides a dedicated network connection to the computer. It is also called network interface controller, network adapter or LAN adapter. A network interface controller is a computer hardware component that connects a computer to a…

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NETWORK TOPOLY AND ITS BENEFITS

What Is Network Topology? Network topology refers to how various nodes, devices, and connections on your network are physically or logically arranged in relation to each other. Think of your network as a city, and the topology as the road map. Just as there are many ways to arrange and maintain a city—such as making…

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SITES THAT OFFER FREE ONLINE LEARNING

Sites For Free Online Education helps you to learn courses at your comfortable place. The courses of these websites are offered by top universities. You can learn a specific subject without much investment. These websites offer many audio, video, articles, and e-books to increase your knowledge. The platforms enable you to learn the best free…

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HOW TO KNOW IF MY COMPUTER HAS GRAPHICS CARD OR NOT

What is graphic card in computer? A video card (also called a graphics card, display card, graphics adapter, or display adapter) is an expansion card which generates a feed of output images to a display device (such as a computer monitor). How many types of graphics card do we have? two typesThere are two types of graphics cards: integrated and dedicated. An integrated graphics card, usually by Intel…

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TELECOMMUNICATIONS AND ITS BENEFITS

DEFINITION OF TELECOMMUNICATION Telecommunications, or telecom, refers to the process of exchanging information such as voice, data and video transmissions via electronic technologies like telephones (wired and wireless), microwave communications, fiber optics, satellites, radio and television broadcasting, and the internet. Six potential media are employed to implement telecommunication links and systems Twisted pair. Coaxial cable….

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BEST COMPUTER SECURITY SOFTWARE 2021

Antivirus Definition Softwares that are created specifically to help detect, prevent and remove malware (malicious software). Antivirus is a kind of software used to prevent, scan, detect and delete viruses from a computer. Once installed, most antivirus software runs automatically in the background to provide real-time protection against virus attacks. Comprehensive virus protection programs help…

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Data Science Meaning

Data science is an inter-disciplinary field that uses scientific methods, processes, algorithms and systems to extract knowledge and insights from many structural and unstructured data. Data science is related to data mining, machine learning and big data. Data Science is also a blend of various tools, algorithms, and machine learning principles with the goal to…

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COMPUTER SCIENCE AND ROBOTICS

DEFINITION Robotics is an interdisciplinary field that integrates computer science and engineering. Robotics involves design, construction, operation, and use of robots. The goal of robotics is to design machines that can help and assist humans. … Robots can take on any form but some are made to resemble humans in appearance. What is the use of computer in robotics? Robotics is the use of computer-controlled…

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What Does A Web Application Firewall Do?

What Is A Web Application Firewall? A web application firewall (WAF) is a specific form of application firewall that filters, monitors, and blocks HTTP traffic to and from a web service. A WAF or Web Application Firewall helps protect web applications by filtering and monitoring HTTP traffic between a web application and the Internet. It typically protects web applications from attacks such as cross site forgery, cross-site-scripting…

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HOW TO GET FREE SSL CERTIFICATE FOR YOUR BLOG AND WEBSITE

DEFINITION SSL certificates are what enable websites to move from HTTP to HTTPS which is more secure. An SSL certificate is a data file hosted in a website’s origin server. SSL certificates make SSL/TLS encryption possible, and they contain the website’s public key and the website’s identity, along with related information. Devices attempting to communicate with the origin server will…

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COMPUTER NETWORKING CONCEPTS

WHAT IS COMPUTER NETWORKING? Computer networking is the act of connecting, two or more computers  for the purpose of communicating data electronically. Besides physically connecting computer and communication devices, a network system serves the important function of establishing a cohesive architecture  that allows a variety of equipment types to transfer information in a near-seamless fashion. Two popular architectures are ISO…

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PARENTAL CONTROL SOFTWARE

Parental Control Software What does Parental Control Software mean? Parental controls are features which may be included in digital television services, computer and video games, mobile devices and software that allow parents to restrict the access of content to their children Parental control software refers to a wide spectrum of software programs and resources for…

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Windows Dhcp Server Command Line

What is DHCP?(Dynamic Host Configuration Protocol) DEFINITION Dynamic Host Configuration Protocol (DHCP) is a network management protocol used to automate the process of configuring devices on IP networks, thus allowing them to use network services such as DNS, NTP, and any communication protocol based on UDP or TCP. A DHCP server dynamically assigns an IP…

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HOW TO INSTALL WINDOWS OS

Each version of Microsoft Windows is installed on a computer using similar steps. While there are steps in the installation process it can differ between versions of Windows, the following general steps and guidelines help you install Windows on your computer. To install windows os on your computer, you need to ensure that your meets…

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HOW TO REMOVE RIGHT PROTECTION FROM USB DRIVES AND MEMORY CARDS

What is right protected in memory card? It exists to ensure that you cannot inadvertently write over critical data on your SD card or delete data to make space to write new files. When write–protection is activated, you will be able to read data on the card—only write operations are blocked. Once your USB flash disk, SD card, internal or external hard drive is write–protected, it means that your device…

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PC CHARGING PROBLEMS AND SOLUTIONS

Charging issues  and problems are the failure of a computer to charge even when it is connected to light.Most often the result of faulty power adapters, non-working power outlets, or bad batteries. If everything checks out okay with the hardware, you can usually fix power issues by updating your laptop’s power or battery management settings. Reasons Why…

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COMPUTER DRIVERS

DEFINITION In the most fundamental sense, a driver is a software component that lets the operating system and a device communicate with each other. For example, suppose an application needs to read some data from a device. The application calls a function implemented by the operating system, and the operating system calls a function implemented…

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HOW TO CONFIGURE FTB SERVER IN LINUX OS

What is a server In computing, a server is a piece of computer hardware or software that provides functionality for other programs or devices, called “clients”. This architecture is called the client–server model. A server is a computer or system that provides resources, data, services, or programs to other computers, known as clients, over a…

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What Is Windows Firewall Used For

A firewall is a network security device that monitors incoming and outgoing network traffic and permits or blocks data packets based on a set of security rules. Its purpose is to establish a barrier between your internal network and incoming traffic from external sources (such as the internet) in order to block malicious traffic like viruses and hackers. The…

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BITCOIN MINING SOFTWARES 2020

What is Bitcoin? Bitcoin is a digital currency created in January 2009 following the housing market crash. It follows the ideas set out in a whitepaper by the mysterious and pseudonymous Satoshi Nakamoto.1 The identity of the person or persons who created the technology is still a mystery. Bitcoin offers the promise of lower transaction fees than traditional online…

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PROJECTOR MAINTENANCE TIPS

A projector is an output device that takes images generated by a computer or Blu-ray player and reproduce them by projection onto a screen, wall, or another surface. In most cases, the surface projected onto is large, flat, and lightly colored. For example, you could use a projector to show a presentation on a large screen so that everyone…

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UNDERSTANDING COMPUTER SYSTEM ADMINISTRATION

A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers. This is the responsibility of a computer systems administrator. Computer systems administrators are responsible for the upkeep, configuration, and reliable operation of a company’s computer systems; especially multi-user computers, such as servers. They…

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HOW TO REMOVE BIOS PASSWORD IN LAPTOPS

What is Bios? In computing, BIOS is firmware used to perform hardware initialization during the booting process, and to provide runtime services for operating systems and programs. The BIOS firmware comes pre-installed on a personal computer’s system board, and it is the first software to run when powered on. BIOS (basic input/output system) is the program…

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HOW TO PREVENT POS FRAUD

What Is a POS Machine? The full meaning of POS is “point of sale,” or, in other words, it’s where your transaction is finalized. The term itself can have a couple of different interpretations. In the narrowest sense, it means that the terminal that sits beside the cash register to process credit and debit cards,…

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COMPUTER PROCESSORS AND THEIR FUNCTIONS

A processor, or “microprocessor,” is a small chip that resides in computers and other electronic devices. Its basic job is to receive input and provide the appropriate output. While this may seem like a simple task, modern processors can handle trillions of calculations per second. A central processing unit, also called a central processor, main processor or just processor, is…

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HOW TO BROWSE THE INTERNET USING YOUR DIGITAL SATELLITE DECODER

WHAT IS INTERNET? Internet, a system architecture that has revolutionized communications and methods of commerce by allowing various computer networks around the world to interconnect. Sometimes referred to as a “network of networks,” the Internet emerged in the United States in the 1970s but did not become visible to the general public until the early 1990s. By…

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CYBER CRIME ITS TYPES AND PREVENTION

What is cybercrime? Cybercrime is criminal activity that either targets or uses a computer, a computer network or a networked device. Most, but not all, cybercrime is committed by cybercriminals or hackers who want to make money. Cybercrime is carried out by individuals or organizations. Some cybercriminals are organized, use advanced techniques and are highly…

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UNDERSTANDING WEB HOSTING

DEFINITION Web hosting is a situation. whereby a hosting provider allocates space on a web server for a website to store its files,  Web hosting makes the files that comprise a website (code, images, etc.) available for viewing online. Every website you’ve ever visited is hosted on a server. Types of  web hosting VPS Hosting VPS stands for “virtual private server.” This hosting type is a step above shared…

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COMPUTER FILE TRANSFER PROTOCOL(FTP)

DEFINITION FTP, means file transfer protocol, computer application used to transfer files from one computer to another over a local area network (LAN) or a wide area network (WAN) such as the Internet. FTP. File transfer protocol (FTP) is also a set of rules that computers follow for the transferring of files from one system to another over the internet….

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ROUTING PROTOCOLS

What is a router in networking? A router is a piece of network hardware responsible for forwarding packets to their destinations. Routers connect to two or more IP networks or subnetworks and pass data packets between them as needed. Routers are used in homes and offices for setting up local network connections. More powerful routers…

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UNDERSTANDING PROGRAMMING LANGUAGES

What is a programming Language? A programming language is a set of commands, instructions, and other syntax use to create a software program. Languages that programmers use to write code are called “high-level languages.” This code can be compiled into a “low-level language,” which is recognized directly by the computer hardware. A programming language is also a notation…

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Dhcp Meaning In Networking

DHCP definition DHCP stands for dynamic host configuration protocol and is a network protocol used on IP networks where a DHCP server automatically assigns an IP address and other information to each host on the network so they can communicate efficiently with other endpoints. In addition to the IP address, DHCP also assigns the subnet…

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CYBER SECURITY AND SOLUTIONS

Definition Cyber security is the practice of defending computers, servers, mobile devices, electronic systems, networks, and data from malicious attacks. It’s also known as information technology security or electronic information security. The term applies in a variety of contexts, from business to mobile computing, and can be divided into a few common categories. TYPES OF…

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How To Configure Mysql Server

DEFINITION MySQL is an open source relational database management system (RDBMS) with a client-server model. RDBMS is a software or service used to create and manage databases based on a relational model. Now, let’s take a closer look at each term: MySQL is also an Oracle-backed open source relational database management system based on Structured Query Language…

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COMPUTER OPERATING SYSTEMS AND ITS FUNCTIONALITIES

What is a computer operating system? An operating system is the most important software that runs on a computer. It manages the computer’s memory and processes, as well as all of its software and hardware. It also allows you to communicate with the computer without knowing how to speak the computer’s language. Without an operating system, a computer is useless. Operating system (OS), program that manages a computer’s resources,…

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INFORMATION TECHNOLOGY AND ITS BENEFITS

DEFINITION IT or information technology refers to the development, maintenance, and use of computer software, systems, and networks. It includes their use for the processing and distribution of data. Data means information, facts, statistics, etc., gathered together for reference, storage, or analysis. IT involves installing, organizing, and maintaining computer systems. It also involves designing and…

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What Is a Computer Ram?

DEFINITION RAM (random-access memory) is a hardware device that allows information to be stored and retrieved on a computer. RAM is usually associated with DRAM, which is a type of memory module. Because data is accessed randomly instead of sequentially like it is on a CD or hard  drive access times  are much faster. However, unlike ROM, RAM is a VOLATILE MEMORY and requires…

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MICROSOFT ACCESS SHORT CUT KEYS

What is Microsoft Access? Microsoft Access is a Database Management System offered by Microsoft. It uses the Microsoft Jet Database Engine and comes as a part of the Microsoft Office suite of application. Microsoft Access offers the functionality of a database and the programming capabilities to create easy to navigate screens (forms). It helps you analyze…

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COMPUTER MOTHER BOARD TYPES AND FUNCTIONS

Definition The motherboard is a printed circuit board and foundation of a computer that is the biggest board in a computer chassis. It allocates power and allows communication to and between the CPU RAM, and all other computer HARDWARE components. Types of Motherboards Motherboards come in different sizes, known as form factors. The most common motherboard form factor is ATX. The different types of ATX…

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THE COMPUTER CPU AND ITS FUNCTIONS

(CPU) means,Central processing unit,it is a principal part of any digital computer system, generally composed of the main memory, control unit, and arithmetic-logic unit. It constitutes the physical heart of the entire computer system; to it is linked various peripheral equipment, including input/output devices and auxilliary storage units. In modern computers, the CPU is contained on an integrated circuit chip called a microprocessor. The control unit of the central processing…

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COMPUTER OUTPUT DEVICES

An output device is any piece of computer hardware equipment which converts information into human-readable form. It can be text, graphics, tactile, audio, and video. Some of the output devices are Visual Display Units (VDU) i.e. a Monitor, Printer, Graphic Output devices, Plotters, Speakers etc. An output device is also any peripheral that receives data from a computer, usually for display, projection, or physical…

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COMPUTER INPUT DEVICES

In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, cameras, joysticks, and microphones. An input device is also any hardware device that sends data to a computer, allowing you to interact with and control it TYPES OF…