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Articles by Pranavnath
Page 11 of 39
Computer Networks Cheat Sheet
Computer networks encompass various types including LANs, WANs, MANs, and VPNs. Each network type has its own set of protocols, standards, and technologies that enable communication and data exchange. Understanding computer networks and their protocols can be overwhelming, which is why a comprehensive cheat sheet becomes invaluable for quick reference and troubleshooting. Types of Networks Local Area Network (LAN) A LAN connects devices within a small geographic area, such as a building or office. It consists of switches, routers, and cables that interconnect computers, printers, and servers within the local premises. LANs typically offer high-speed connectivity and ...
Read MoreDifference between CAT5e and CAT6
Ethernet cables are the backbone of computer networking, connecting devices such as computers, printers, and switches to enable communication and data sharing. There are different types of Ethernet cables, known as categories, with each category offering a different level of performance. Two of the most commonly used categories are CAT5e and CAT6. While they both serve the same purpose, there are key differences between the two. In this article, we'll explore these differences and help users decide which cable is best suited for their needs. Whether you're setting up a small home network or managing a large enterprise system, ...
Read MoreAdvantages and Disadvantages of 802.11ac?
The IEEE 802.11ac standard represents a significant advancement in wireless networking technology, designed to address the growing demand for higher speeds and better performance in wireless local area networks (WLANs). As an evolution from the previous 802.11n standard, 802.11ac delivers substantial improvements in throughput, capacity, and user experience. What is IEEE 802.11ac? IEEE 802.11ac is a Wi-Fi standard that operates primarily on the 5 GHz frequency band, offering theoretical speeds up to 6.93 Gbps. It introduces advanced technologies like wider channel bandwidth (up to 160 MHz), higher-order modulation (256-QAM), and enhanced Multiple Input Multiple Output (MU-MIMO) capabilities. The ...
Read MoreTrojan horse and Trap Door
A program threat is malicious software designed to compromise system security, steal data, or gain unauthorized access. Two of the most significant program threats are Trojan horses and trap doors (backdoors), which can cause data corruption, information theft, and system compromise. These threats exploit vulnerabilities in systems to perform unauthorized activities, making it crucial for organizations and individuals to understand their mechanisms and implement proper security measures. Security Violations Program threats can lead to several types of security violations: Data theft − Stealing sensitive information like credit card numbers, passwords, and financial data Unauthorized modification ...
Read MoreBaud Rate and its importance
In the field of electronics and communication, the baud rate is crucial for data transmission. It refers to the number of signal changes (symbols) that can be transmitted per second across a communication channel. Baud rate is a fundamental parameter that determines how quickly information can be exchanged between devices in digital communication systems. What is Baud Rate? Baud rate is a measure of the signaling rate in a communication channel, representing the number of signal elements transmitted per second. Named after Émile Baudot, it is often confused with bits per second (bps), though they are different concepts. ...
Read MoreApplications of Adhoc network and its problem
An Ad-hoc network is a decentralized wireless network that operates without any fixed infrastructure or access points. Nodes communicate directly with each other using radio waves, establishing connections instantly when needed. The term "ad-hoc" means "for this purpose" in Latin, reflecting the network's ability to form spontaneously for specific communication needs. In a multi-hop architecture, nodes serve multiple functions including routing, security, key management, and addressing. Data packets are transmitted from source to destination through intermediate nodes in a store-and-forward manner, making it a true peer-to-peer wireless network. Ad-hoc Network Structure ...
Read MoreTypes of Viruses
A computer virus is a type of malicious code that enters the system along with files or programs and carries out malfunctions in the system. The virus-affected program becomes a replica of the existing program. They enter the system through files and when the file runs, the virus also runs in the background. Viruses infiltrate systems through various methods including email attachments, clicking malicious advertisements, and downloading software from unauthorized websites. Their main objective is to spread across different hosts while stealing personal data and system credentials. Types of Computer Viruses A virus is a specific type ...
Read MoreApproaches to Information Security Implementation
Information security protects information from disruption, misuse, destruction, disclosure, modification, or unauthorized access. The goal of information security is to protect critical data and privacy both digitally and physically. Information security is abbreviated as InfoSec. Information security adheres to the CIA Triad − Confidentiality, Integrity, and Availability: Confidentiality − Protects information from unauthorized disclosure of sensitive data. Integrity − Ensures data is protected from modification or tampering, maintaining accuracy and trustworthiness. Availability − Ensures information is accessible when needed by authorized entities and organizations. CIA ...
Read MoreTransmission mode
Communication is defined as the transfer or sharing of data between any two individuals through a medium and the medium can be wired or wireless. In a computer network, the OSI (Open System Interconnection) model has seven layers for the communication networks. The first layer of OSI is the Physical layer that uses the Transmission mode for transferring the raw data to other devices using a physical medium. Transmission mode refers to the process of transferring data from one point to another over a particular network. The channel between the two devices can be buses or networks, and communication ...
Read MoreBluetooth vs Bluetooth Low Energy
Modern electronic devices rely heavily on wireless communication technologies. Bluetooth and Bluetooth Low Energy (BLE) are two widely adopted wireless standards that, despite sharing similar underlying principles, serve different purposes based on power consumption, range, and application requirements. Understanding the differences between these technologies is crucial for selecting the right wireless solution for specific device applications, from smartphones to IoT sensors. What is Bluetooth? Bluetooth is a wireless communication protocol that enables devices to communicate over short distances. First introduced by Ericsson in 1994, it has become one of the most widely used wireless technologies globally, found ...
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