Remote Authentication Dial-In User Service (RADIUS) RADIUS is a networking protocol that provides centralized authentication, authorization, and accounting (AAA) services primarily for remote access. It allows a network access server (NAS) to communicate with a central server to authenticate users and authorize their access to network resources. It’s commonly used for dial-up, VPN, and wireless … Read more
What is Patch cable? A patch cable, also known as a patch cord or patch lead, is a type of Ethernet cable used to connect devices within a local area network (LAN) or to connect network equipment to a data outlet. Patch cables are commonly used to establish temporary or permanent connections between devices such … Read more
Power over Ethernet (PoE) switches are network switches that provide power to connected devices over Ethernet cables, eliminating the need for separate power sources. There are several standards for PoE, including PoE, PoE+, and PoE++, each offering different levels of power delivery and compatibility. Let’s talk about them. PoE (Power over Ethernet) PoE, based on … Read more
Fiber optics refers to the technology of transmitting light down thin strands of highly transparent material, usually glass but sometimes plastic. An optical fiber is a long thin strand of glass. A fiber-optic cable is made up of incredibly thin strands of glass known as optical fibers; one cable can have as few as two strands … Read more
What is a Geostationary Satellite? A Geostationary Satellite, also known as a Geosynchronous Equatorial Orbit (GEO) satellite, is a type of artificial satellite that orbits the Earth at an altitude of approximately 35,786 kilometers (22,236 miles) above the equator. This specific altitude allows the satellite to match the Earth’s rotation period, resulting in the satellite … Read more
Forward Error Correction (FEC) FEC is a technique used to detect and correct errors in transmitted data without the need for retransmission. FEC involves adding redundant information (parity bits or error-correcting codes) to the transmitted data. This redundant information allows the receiver to detect and correct errors without requiring the sender to resend the data. … Read more
Electromagnetic interference (EMI) refers to the disturbance caused by electromagnetic radiation on electronic devices, equipment, or systems. This interference can disrupt the proper functioning of electronic devices and cause issues such as signal distortion, data corruption, increased error rates or even complete failure. EMI can occur through mechanisms such as radiation from electronic devices, power … Read more
What Is A Printer? A printer is an output device that produces graphics and texts on a physical medium such as paper. A printer draws images and texts on a page with the help of commands given through a computer. Printers are often connected to computers either wirelessly or through the use of USB cable. … Read more
What Is RAM (Random Access Memory)? RAM is an acronym for random access memory, a type of computer memory where the Operating system (OS), application programs and data in current use are kept so that they can be accessed directly and quickly by the device’s processor. RAM is used to store the data that is … Read more
A new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1979 and the early to mid-1980s. Each generation is characterized by new frequency bands, higher data rates and non-backward-compatible transmission technology. 1G (First Generation Technology) 1G refers to the first generation of wireless cellular technology. These are … Read more