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Windows Articles
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Local procedure calls in Windows
The Local Procedure Call (LPC) facility in Windows is a message-passing mechanism designed for communication between two processes on the same machine. LPC is optimized specifically for Windows and serves as an efficient alternative to standard Remote Procedure Call (RPC) mechanisms. Windows uses port objects to establish and maintain connections between processes, similar to the Mach operating system. Types of Ports Windows employs two types of ports for LPC communication: Connection ports − Used for establishing initial connections between client and server processes Communication ports − Used for actual message exchange after the connection is established ...
Read MoreTypes of Parallelism in Processing Execution
Parallelism in processing execution refers to the simultaneous execution of multiple tasks or operations to improve computational performance. There are four main types of parallelism, each operating at different levels of the computing system. Data Parallelism Data Parallelism involves concurrent execution of the same task on multiple computing cores, but with different portions of data. Each core performs identical operations on separate data segments. Consider summing an array of size N. For a single-core system, one thread sums elements [0] ... [N−1]. For a dual-core system, thread A on core 0 sums elements [0] ... [N/2−1], while ...
Read MoreAdvantages and Disadvantages of Windows Operating System
Windows Operating System is a type of operating system based on Graphical User Interface (GUI). It creates an interface between user and machine using graphical elements like icons, pictures, colors, and windows to make computing more intuitive and accessible. The Windows operating system was developed by Microsoft Corporation, an American multinational technology company founded by Bill Gates and Paul Allen. Windows is one of the most popular computer operating systems globally, with over 70% market share on desktop computers. The primary reason behind its popularity is its user-friendly interface, multitasking capabilities, and extensive hardware compatibility. ...
Read MoreViews of the Operating System
The operating system can be viewed from two distinct perspectives − the user view and the system view. These viewpoints provide different insights into how an operating system functions and serves its purpose. The user view focuses on the interface and experience provided to users, while the system view examines the internal resource management and hardware interaction aspects. Views of the Operating System Operating System Views User View System View Interface & ...
Read MoreVolatile data Collection from Window System
Volatile data is temporary information stored in a computer's memory that is lost when the system loses power or is switched off. It resides primarily in Random Access Memory (RAM) and cache memory, making it crucial for digital forensics investigations to collect this data quickly before it disappears. Random Access Memory (RAM) is volatile memory used to hold instructions and data of currently running programs. This memory loses integrity immediately after loss of power, making it a critical source of evidence that must be preserved during forensic investigations. Volatile vs Non-Volatile Memory ...
Read MoreWeb Operating System
A Web Operating System (Web OS) is an internet-based user interface that allows users to access applications and data through a web browser rather than installing software locally on their computer. Unlike traditional operating systems, a Web OS does not directly interact with hardware but provides a platform for cloud-based computing and distributed applications. Web Operating System Architecture Web Browser Cloud Servers Internet AJAX JavaScript ...
Read MoreConcept of Address Split in OS
Address splitting is a memory management technique used in operating systems to divide the virtual address space of processes into distinct logical segments. This approach enables efficient memory allocation, enhanced security through access control, and improved system performance by organizing memory into manageable units with specific purposes. Memory Segmentation Memory segmentation divides the process address space into logical segments such as code, data, stack, and heap segments. Each segment serves a specific purpose and can have different access permissions and sizes based on process requirements. Process Address Space Segmentation ...
Read MoreCPU Scheduling Criteria
CPU scheduling is the process of determining which process or task is to be executed by the central processing unit (CPU) at any given time. It is an important component of modern operating systems that allows multiple processes to run simultaneously on a single processor. The CPU scheduler determines the order and priority in which processes are executed and allocates CPU time accordingly, based on various criteria such as CPU utilization, throughput, turnaround time, waiting time, and response time. Efficient CPU scheduling is crucial for optimizing system performance and ensuring that processes are executed in a fair and timely manner. ...
Read MoreDevice Management in Operating System
An essential part of an operating system is device management, which controls how software applications interact with the hardware attached to the computer system. It involves the process of detecting, configuring, allocating, and managing access to devices like printers, scanners, storage units, and network interfaces. The device management system ensures that hardware devices are used effectively by providing a consistent and reliable interface between software and hardware components. Device Management Architecture Device Management Architecture User Space Application 1 ...
Read MoreDisk Scheduling and Management
Disk scheduling and management are essential components of an operating system that handle the organization and access of data on storage devices. Disk scheduling algorithms determine the order in which the read/write head moves to access data, directly impacting system performance. Meanwhile, disk management involves tasks such as partitioning, formatting, and file system creation to ensure optimal disk utilization and data integrity. Types of Disk Scheduling Algorithms Disk Scheduling Algorithm Categories Algorithms Order-Based ...
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