Firewall monitors all network traffic on the connections for which it is enabled. The firewall keeps track of all communications that have originated from your computer, and it prevents unsolicited traffic from reaching your computer.
If necessary, the firewall dynamically opens ports and allows your computer to receive traffic that you have specifically requested, such as a Web page for which you have clicked the address....
Firewall monitors all network traffic on the connections for which it is enabled. The firewall keeps track of all communications that have originated from your computer, and it prevents unsolicited traffic from reaching your computer.
If necessary, the firewall dynamically opens ports and allows your computer to receive traffic that you have specifically requested, such as a Web page for which you have clicked the address....
There are many creative ways that unscrupulous people use to access or abuse unprotected computers:
Remote login – When someone is able to connect to your computer and control it in some form. This can range from being able to view or access your files to actually running programs on your computer....
A Power supply also known as a power supply unit or PSU, is the component that supplies power to an electronic device such as a computer. All electronic circuits need to be powered from a reliable direct current (DC) source and such power source must be generated from an everlasting source of alternating current (AC) power.
There are a wide variety of power supplies including batteries, fuel cells, electro-mechanical generators, alternating current to direct current supplies, inverters, and alternating current supplies, among many others....
If you have been using the Internet for any length of time, and especially if you work at a larger company and browse the Web while you are at work, you have probably heard the term firewall used. Basically, a firewall is a barrier unauthorized Internet users from accessing private networks connected to the Internet, especially intranets.
The term “firewall” originally means a fireproof wall intended to prevent the spread of fire from one room or area of a building to another. A firewall’s purpose is very simple: to block or filter people from accessing your computer remotely or viruses and worms infecting your machine. Its basic task is to regulate some of the flow of traffic between computer networks of different trust levels. Some firewalls will also monitor outgoing traffic for suspicious behavior. One characteristic of many viruses is that once you’re infected they attempt to establish connections to other computers to spread....
There are two general categories: hardware and software. Firewalls can be implemented in both hardware and software or a combination of both.
A hardware firewall is a box that sits between you and the internet that performs the filtering function. Traffic that is filtered out never reaches your computer. Broadband routers perform the function of a firewall quite nicely....
A firewall is simply a program or hardware device that filters the information coming through the Internet connection into your private network or computer system. A firewall trusts nobody unless it is told otherwise. It secures your computer from the outside world. It helps protect computers inside a large company.
A company can set up rules like this for FTP servers, Web servers, Telnet servers, and so on. In addition, the company can control how employees connect to Web sites, whether files are allowed to leave the company over the network, and so on. A firewall gives a company tremendous control over how people use the network....
February 28, 2023
At CAVSI we recognize that privacy is important. We value our visitors’ trust and respect your privacy. We have created this email privacy policy to demonstrate our firm commitment to your privacy and the protection of your information. Please read the following to learn more about our privacy policy....
Find here a list of important computer acronyms and abbreviations...
Glossary of Audio-Visual terms, technologies, and abbreviations. Here you will find definitions for common audiovisual terminology.
If you struggle trying to keep up with or understand some AV terms, here you will find the definition for common audiovisual terminology. This is a helpful glossary of audiovisual terms....
SECAM is an abbreviation for Sequential Color and Memory or Séquentiel couleur à mémoire in French.
SECAM is an analog color television system first used in France. A team led by Henri de France working at Compagnie Française de Télévision (later bought by Thomson) invented SECAM. SECAM uses the same resolution as PAL (625 lines) but transmits the color information sequentially: R-Y on one line and B-Y on the next....
PAL is an abbreviation for Phase Alternating Line.
PAL is a color encoding system used in broadcast television systems in large parts of the world. The PAL TV standard came into the market in early 1960s Europe. The term PAL describes any video, including digital video, formatted for playback on a PAL TV....
NTSC is an abbreviation for National Television System Committee.
The NTSC is responsible for setting television and video standards used in North America, most of South America, and some other countries. The NTSC standard for television defines a composite video signal with a refresh rate of 30 interlaced frames per second. Each frame contains 525 lines and can contain 16 million distinct colors....
Linear video editing is the process of selecting, arranging, and modifying the images and sound recorded on videotape. In the early 1990s, many people used the term video editing instead of linear video editing.
Linear video editing is a mechanical process that uses linear steps one cut at a time (or a series of programmed cuts) to its conclusion. It also uses Camcorders, VCRs, Edit Controllers, and Mixers to perform the edit functions....
A microphone, mike, or simply mic, is an acoustic-to-electric transducer or sensor that converts sound into an electrical signal. Microphones are transducers that detect sound waves and produce an electrical image of the sound; they create a voltage or a current proportional to the sound signal. Telephones and radio transmitters used them. Today, they have developed through some major changes in quality.
A microphone converts sound into a small electrical current. When you speak, sound waves created by your voice carry energy toward the microphone. Inside the microphone, sound waves hit a diaphragm that vibrates, moving a magnet near a coil. In some designs, the coil moves within a magnet. The magnet produces a magnetic field that cuts through the coil. As the coil moves back and forth through the magnetic field, an electric current flow through it. The electric current flows out from the microphone to an amplifier or sound recording device....
In computing and telecommunications, a digital storage unit is a measurement for data storage is the capacity of some standard data storage system or communication channel used to measure the capacities of other systems and channels.
Below is a list of all the standard units of measurement used for data storage, from the smallest to the largest....
Abbreviations, acronyms, and initialisms related to Networking terminology. Here you will learn what those letters stand for in a computer network along with their accepted definitions.
AARP is a protocol for mapping physical hardware addresses and their temporarily assigned Apple talk network addresses....
Acronyms are like abbreviations; in that, they are a shorthand way of expressing an idea. An abbreviation is a short form of a word. While the first letter of each word in a sentence forms an acronym. Below, there is a list of common information technology abbreviations. It also shows what they stand for and s short definition.
ABM is a communication mode of HDLC that manages peer-to-peer communications between nodes at the same level (peers), and two stations, where either party may start the transmission....
A network certification can help you to get ahead in your career. Network certifications are credentials you can earn to demonstrate you have the knowledge and skills to work with networks in the information technology field. In this article, we are going to learn more about some popular Networking certifications.
AIS is a computer security certification for the network IT and security professional that focuses on assessing security risks and preventing security breaches. Security University offers the Advance Information Security certification. AIS is an advanced course that requires expert knowledge of security technologies....
Apple offers hardware and software certification programs for businesses, education, and specialized professionals. An Apple certification helps you demonstrate and measure your skills in Apple products. They are designed to create an important level of technical proficiency among Mac technicians, system administrators, and users.
Getting an Apple certification gives you validation of your knowledge, skills, and abilities using Mac products and applications. There are two types of certification paths available for Apple: Creative Professionals and Information Technology Professionals....