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Articles on Trending Technologies
Technical articles with clear explanations and examples
50 Common Ports You Should Know
In computer networking, ports serve as logical channels that enable communication between devices and applications. Each port is identified by a unique port number ranging from 0 to 65535, assigned by the Internet Assigned Numbers Authority (IANA). Understanding these port numbers and their associated services is essential for network administrators, IT professionals, and cybersecurity specialists. This article explores 50 of the most commonly used ports in networking, organized by their categories and significance. These ports facilitate everything from web browsing and email to database connections and remote access. Port Number Categories Port numbers are divided into three ...
Read MoreWhat is NVMe in the Computer Network?
Non-Volatile Memory Express (NVMe) is a high-performance storage access and transport protocol specifically designed for solid-state drives (SSDs) and flash storage. It delivers significantly higher throughput and faster response times compared to traditional storage interfaces like SATA and SAS. NVMe is optimized for modern flash storage, providing a direct communication path between SSDs and host systems through the PCIe (Peripheral Component Interconnect Express) bus. This eliminates the bottleneck that occurs when high-speed flash storage is connected through legacy interfaces originally designed for slower hard disk drives. NVMe vs Traditional Storage Communication ...
Read MoreWhat is Dense Wavelength division multiplexing (DWDM)?
Dense Wavelength Division Multiplexing (DWDM) is a technology that multiplexes data signals from different sources so they can share a single optical fiber pair while maintaining complete separation of the data streams. DWDM can handle higher speed protocols up to 100 Gbps per channel, with each channel separated by only 0.8nm. Dense wavelength division multiplexing works on the same principle as CWDM but provides increased channel capacity and can be amplified to support much longer distances. Dense Wavelength Division Multiplexing (DWDM) λ1 (1530nm) ...
Read MoreWhat is DSL technology and differentiate between DSL modem and DSLAM?
Digital Subscriber Line (DSL) is a technology that transmits digital data over traditional copper telephone lines. DSL enables high-speed internet access by utilizing higher frequency ranges of the telephone line, allowing simultaneous voice and data transmission without interference. Unlike dial-up connections that monopolize the phone line, DSL technology uses frequency division to separate voice calls (low frequencies) and internet data (higher frequencies). This allows users to make phone calls while browsing the internet simultaneously. How DSL Works DSL operates by splitting the available bandwidth on copper telephone wires into different frequency ranges. Voice communication uses frequencies below ...
Read MoreMultifactor Authentication
Multi-factor Authentication (MFA) is a security method that requires users to provide additional verification beyond their username and password. This could include entering a code sent to their phone, answering a security question, or using biometric authentication like fingerprint scanning. MFA provides a crucial additional layer of security − even if login credentials are compromised, unauthorized access is prevented by requiring the additional authentication factor that only the legitimate user should possess. Multi-Factor Authentication Process Something You Know Password Something ...
Read MoreWhat is IEEE 802.3?
IEEE 802.3 is a set of standards and protocols that define Ethernet-based networks. Ethernet technologies are primarily used in LANs, though they can also be used in MANs and even WANs. IEEE 802.3 defines the physical layer and the medium access control (MAC) sub-layer of the data link layer for wired Ethernet networks. The IEEE 802.3 standard specifies how data is transmitted over various physical media, including coaxial cables, twisted pair cables, and fiber optic cables. It also defines the CSMA/CD (Carrier Sense Multiple Access with Collision Detection) access method used in traditional Ethernet networks. IEEE 802.3 Popular ...
Read MoreWhat are beacon frames?
In computer networks, beacon frames are management frames used in IEEE 802.11 based wireless local area networks (WLANs). A beacon frame contains essential network information that a station needs before it can transmit data. These frames serve two primary purposes: announcing the presence of devices in a WLAN and synchronizing devices and services across the network. Beacon frames are integral to the operation of Basic Service Sets (BSS). In infrastructure BSS mode, access points (APs) act as wireless routers forming base stations. All devices communicate through these APs, which transmit beacon frames periodically to inform stations about network status ...
Read MoreDifference between Volatile Memory and Non-Volatile Memory
Volatile memory and non-volatile memory are two fundamental types of computer memory that differ significantly in their data retention capabilities and usage patterns. Volatile memory requires continuous power to maintain data and is used for temporary storage, while non-volatile memory preserves data even when power is removed, making it suitable for permanent storage. Memory Types Comparison Volatile Memory Loses data when power off Examples: RAM, Cache Fast access Temporary storage Non-Volatile ...
Read MoreTypes of Joints in Optical Fiber
Optical fiber is a technology through which data passes in the form of light at high speed. It is a thin transparent cable that is flexible and can be bent easily. Fiber optic cables can be joined multiple times in one installation using specialized joints. Joints are used to transfer light from one fiber optic cable to another and are made up of plastic or glass materials. In this article, we will explore the various types of joints in optical fiber. Fiber Optic Joint Connection ...
Read MoreWhat is Storage Area Network (SAN) in Computer Network?
SAN stands for Storage Area Network. This is a dedicated high-speed network that connects storage devices to multiple servers, providing a shared pool of storage resources. Each server can access SAN storage as if it were directly attached local storage, enabling centralized data management and improved storage utilization. A SAN consists of interconnected hosts, switches, and storage devices that communicate using specialized protocols. Fibre Channel (FC) is the most common transport protocol, offering high-speed, low-latency connections. Fibre Channel over Ethernet (FCoE) allows organizations to run FC traffic over existing Ethernet infrastructure, converging storage and IP networks. ...
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