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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to Get Domain and IP Address Information Using WHOIS Command?
The WHOIS command is a widely-used protocol for retrieving registration information about domain names and IP addresses. Originally intended for system administrators and network engineers to diagnose network issues, it has now become a popular tool for anyone looking to gather information on a domain or IP address. When you initiate a WHOIS query, your computer sends a request to a WHOIS server — a database of registered domain names and IP addresses. In response, the server provides registration information for the requested domain or IP address. The Internet Corporation for Assigned Names and Numbers (ICANN) governs the WHOIS ...
Read MoreWhat is BGP and why do we need it?
BGP (Border Gateway Protocol) is a standardized exterior gateway protocol designed to exchange routing and reachability information between different autonomous systems (AS) on the Internet. It is classified as a path vector protocol, making routing decisions based on paths, network policies, and rule sets configured by network administrators. BGP is essential for Internet connectivity, as it enables different networks owned by various organizations to communicate and share routing information effectively. BGP: Connecting Autonomous Systems AS 100 ISP A R1 ...
Read MoreShort InterFrame Spacing (DIFS)
Short Interframe Spacing (SIFS) is the time interval required by a wireless device between receiving a frame and responding to the frame. It is used in the Distributed Coordination Function (DCF) scheme, which is a mandatory collision avoidance technique in IEEE 802.11-based WLAN standards (Wi-Fi). The duration of SIFS equals the sum of delays in Radio Frequency (RF), Physical Layer Convergence Procedure (PLCP), and MAC (Medium Access Control) layer processing. This timing ensures that high-priority control frames like ACK and CTS get immediate channel access without competing with data frames. In IEEE 802.11 networks, SIFS is the shortest ...
Read MoreDifference between BOOTP and DHCP
BOOTP (Bootstrap Protocol) is used to configure hosts and obtain host addresses along with bootstrap information. DHCP (Dynamic Host Configuration Protocol) is an extended version of BOOTP that provides dynamic host configuration capabilities. Both protocols handle automatic IP address assignment, but they differ significantly in their approach and capabilities. What is BOOTP? The Bootstrap Protocol is a networking protocol defined in RFC 951 that allows a configuration server to automatically provide IP addresses to network devices in Internet Protocol networks. When a network-connected machine boots up, its IP stack sends out BOOTP network signals requesting an ...
Read MoreGrid Computing
Grid Computing is a distributed computing model that connects multiple computers across different geographical locations to work together as a unified system. It enables organizations to harness the collective computational power of idle computers across networks to solve complex problems that would be difficult or expensive to handle with traditional computing resources. Grid computing emerged in the 1990s as an evolution from cluster computing, creating a virtual supercomputer from interconnected heterogeneous nodes. Unlike traditional computing systems that rely on centralized resources, grid computing leverages distributed resources that can be dynamically allocated based on demand. ...
Read MoreDifferentiate between DAS and SAN in Computer Network.
Direct Attached Storage (DAS) and Storage Area Network (SAN) are two distinct storage architectures used in computer networks. Understanding their differences is crucial for selecting the appropriate storage solution based on organizational needs and budget considerations. Direct Attached Storage (DAS) DAS stands for Direct-attached storage. It is computer storage that is connected directly to one computer and not accessible to other systems on the network. The DAS system is attached directly to the computer through the HBA (Host Bus Adapter). Unlike network-attached storage devices, DAS connects directly to the server without requiring network infrastructure. Modern DAS systems ...
Read MoreWhat is QOS and mobile and network QOS?
Let us understand the concept of Quality of Service (QoS) in networking and mobile communications. QoS in Networking Quality of Service (QoS) in networking refers to the ability of a network to provide reliable and predictable service levels to different types of traffic across various technologies including Ethernet, wireless, IP, and Asynchronous Transfer Mode. During network congestion, QoS mechanisms must account for various factors that cause performance degradation, such as limited bandwidth, high traffic on specific routes, or inefficient resource allocation. The routing protocol heavily impacts network QoS by determining how efficiently traffic is distributed across available ...
Read MoreNear Field Communication
Near Field Communication (NFC) is a short-range wireless communication technology that enables two electronic devices to establish communication when placed in close proximity, typically within a few centimeters. NFC is an extension of Radio Frequency Identification (RFID) technology and operates at a frequency of 13.56 MHz. NFC technology enables contactless communication and data exchange between devices, making it convenient and efficient for various applications such as mobile payments, access control, and data sharing. NFC Communication Range Phone ...
Read MoreDifference between SDRAM and DDR
SDRAM and DDR are two different types of RAM technologies. SDRAM stands for Synchronous Dynamic Random Access Memory and was released in 1993. DDR stands for Double Data Rate SDRAM, which is an enhanced version of SDRAM that provides double data transmission in each clock cycle. Understanding the differences between these memory types is crucial for system design and troubleshooting, as they have different performance characteristics, physical specifications, and power requirements. What is SDRAM? SDRAM is a type of DRAM that operates synchronously with the system clock, allowing it to run at higher speeds than conventional asynchronous ...
Read MoreCalling Web Service Using Curl With Telnet Connection
Curl is a powerful command-line tool for transferring data using various network protocols. It was designed to work without user interaction, making it ideal for scripts and automated tasks. Curl supports numerous protocols including HTTP, HTTPS, FTP, SFTP, Telnet, and many more. With curl, you can send HTTP requests, receive responses, upload and download files, and even handle email using SMTP and IMAP protocols. It provides extensive command-line options to control request behavior, set headers, specify request methods, and handle authentication. What is Curl? Curl is available on most operating systems and comes pre-installed on Linux and ...
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