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Articles by Bhanu Priya
1,061 articles
What are the challenges faced by transport layer protocol?
In the OSI (Open System Interconnection) model, the transport layer is the fourth layer responsible for end-to-end communication between sender and receiver over the internet. It provides logical communication and ensures reliable delivery of data packets across the network. Transport Layer Protocols The main transport layer protocols include ? TCP (Transmission Control Protocol) − Connection-oriented, reliable protocol UDP (User Datagram Protocol) − Connectionless, fast protocol SCTP (Stream Control Transmission Protocol) − Message-oriented reliable protocol RDP (Reliable Data Protocol) − Reliable multicast protocol RUDP (Reliable User Datagram Protocol) − UDP with reliability features Responsibilities of ...
Read MoreWhat is digital certificate and digital signature?
Digital certificates and digital signatures are fundamental concepts in cybersecurity that ensure secure communication and data integrity. Let's explore both concepts and understand how they work together to provide authentication and security. Digital Certificate A digital certificate is an electronic document issued by a trusted Certificate Authority (CA) that verifies the identity of an individual, organization, or device. It contains the entity's public key and identifying information, digitally signed by the CA to guarantee authenticity. Components of a Digital Certificate A digital certificate typically contains ? Subject's public key − Used for encryption and ...
Read MoreConstruct an ER diagram for a company in DBMS?
An Entity-Relationship (ER) diagram is a visual representation of the data model for a database. It shows entities, their attributes, and the relationships between them. In this article, we construct an ER diagram for a company database step by step. Problem Draw an ER model for a company considering the following constraints − In a company, an employee works on many projects which are controlled by one department. One employee supervises many employees. An employee has one or more dependents. One employee manages one department. Solution ...
Read MoreWhat is the Real Time Operating System?
A Real-Time Operating System (RTOS) is a specialized operating system designed to process data and respond to inputs within a guaranteed time frame. Unlike general-purpose operating systems that prioritize throughput and resource utilization, RTOS focuses on deterministic timing and predictable response times to meet strict deadlines. The key characteristic of RTOS is that the correctness of the system depends not only on the logical result of computation but also on the time at which results are produced. Missing a deadline, even by microseconds, can lead to system failure in critical applications. Types of Real-Time Operating Systems ...
Read MoreWhat is a distributed Operating System?
Distributed Operating System is a type of operating system model where applications run on multiple interconnected computers that appear as a single unified system to users. It extends beyond network operating systems by providing higher levels of communication, integration, and resource sharing across distributed machines. A distributed OS runs on multiple CPUs across different physical locations, but presents itself to end-users as an ordinary centralized system. It enables seamless sharing of resources like CPU, disk storage, network interfaces, and processing nodes across multiple sites, effectively increasing the total computational capacity and data availability of the entire system. Architecture ...
Read MoreWhat is the Network Operating System?
A Network Operating System (NOS) is specialized system software designed to manage and coordinate network resources, facilitate communication between connected devices, and provide services to multiple users across a network. Unlike traditional operating systems that manage single computers, a NOS focuses on network-wide operations and resource sharing. What is a Network Operating System? The Network Operating System specializes in managing network devices such as routers, switches, firewalls, and servers. It supports workstations, Personal Computers (PCs), and terminals connected over a Local Area Network (LAN) or Wide Area Network (WAN). The primary purpose is to enable seamless communication, resource ...
Read MoreWhat are the differences between Mega and Ubuntu One?
Let us understand the concepts of Mega and Ubuntu One before learning the differences between them. Mega Mega is a cloud storage and file hosting service developed by MEGA Ltd in 2013. It was written using C++, JavaScript, Java and C, with services offered through web-based applications. Mega was once the largest free cloud storage provider worldwide, offering 15 GB of storage for free accounts (currently reduced from the original 50 GB). It supports Microsoft Windows, macOS, Linux, Android, iOS, Windows Phone, and browser extensions, providing cloud storage, file hosting, and remote backup services. Features of ...
Read MoreWhat are the advantages and disadvantages of operating systems?
Each operating system has its own advantages and disadvantages. Understanding these benefits and drawbacks helps users make informed decisions about which OS best suits their needs. Advantages of Operating Systems Operating systems provide numerous benefits that make computing accessible and efficient − User Interface − OS acts as an interface between users and hardware, providing both command-line and graphical user interfaces (GUI). Modern operating systems offer intuitive interfaces that allow users to interact with computers without technical expertise. Resource Management − Operating systems efficiently manage system resources including CPU time, memory allocation, storage space, and ...
Read MoreWhat is Kernel and different types of Kernels?
Kernel is the core component of an Operating System that acts as a bridge between user applications and hardware components. The kernel is the first program loaded after the boot loader when a system starts and remains in memory until the operating system shuts down. When a process needs system resources, it communicates with the kernel through system calls. Functions of Kernel The kernel performs several critical functions to manage system resources efficiently: Process Management − Creates, schedules, and terminates processes Memory Management − Allocates and deallocates memory space for processes Device Management − Controls and ...
Read MoreWhat are the features of Operating Systems?
Operating systems (OS) have evolved significantly from their early days of handling storage devices to sophisticated systems with graphical user interfaces and advanced features. Modern operating systems provide a comprehensive set of capabilities that manage hardware resources and provide services to applications. The key features of an operating system include resource management, security, and user interface capabilities that enable efficient computing operations. Memory Management The operating system controls the primary memory (main memory), which is organized as a large array of bytes or words, each assigned a unique address. Primary memory provides fast storage that can be ...
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