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Hardware Articles
Page 13 of 32
What are process states?
A process is a program in execution that consists of more than just program code (text section). This concept works under all operating systems because every task performed by the operating system requires a process to execute. A process executes by changing its state over time. The state of a process is defined by the current activity and status of that process within the system. Types of Process States Each process may be in any one of the following five states − New − The process is being created and initialized by the operating system. ...
Read MoreLaunch a career in IT Hardware and Networking
IT Hardware and Networking remains an essential backbone of modern organizations. High-performance systems, reliable network connections, secure servers, and cloud infrastructure are vital for businesses to operate efficiently in today's digital landscape. Digital assets play a significant role in a company's success—even minor network outages can result in substantial losses. This makes Hardware and Networking one of the most sought-after career fields, encompassing specialized areas such as cloud computing, virtualization, system administration, and cybersecurity. Why Choose a Career in IT Hardware and Networking? IT professionals in Hardware and Networking can pursue diverse positions including network support specialist, ...
Read MoreDifference between Storage Area Network (SAN) and Network Attached Storage (NAS)
A Storage Area Network (SAN) is a high-speed network that provides block-level storage access to multiple servers, making storage devices appear as locally attached drives. In contrast, Network Attached Storage (NAS) is a file-level storage solution that connects to existing networks and provides centralized file sharing services to multiple clients. Both technologies address different storage needs in modern IT environments. SANs excel in high-performance scenarios requiring direct storage access, while NAS solutions offer simplified file sharing and management for collaborative environments. What is Storage Area Network (SAN)? A Storage Area Network is a dedicated, high-speed network that ...
Read MoreTop Computer Network Interview Questions
This article includes some of the top network interview questions with answers that can benefit candidates attending a job interview on Networking. We have tried our best to include all the relevant and most-asked questions and explain them in lucid language so everyone can understand them. What is a Network? A network is a collection of multiple computers or devices connected to share resources, allowing electronic communication and file exchange. These computers can be linked through cables, the internet, satellites, telephone lines, radio waves, or infrared light beams. What is a Node? A node is a ...
Read MoreWhy is CCNP certification the key to success in Networking Industry?
A Cisco Certified Network Professional (CCNP) certification is an industry-recognized credential that demonstrates your ability to implement, design, operate, and troubleshoot enterprise-level networking infrastructure. In today's competitive IT market, CCNP certification has become increasingly valuable for networking professionals seeking career advancement and higher-level responsibilities. The CCNP credential validates advanced networking skills across multiple domains including data center network architecture, service delivery, security, virtualization, WAN technologies, and IP routing. This certification is designed for professionals with at least one year of networking experience who want to specialize in enterprise networking solutions. CCNP Career Path Progression ...
Read MoreDifference Between Interrupt and Polling in OS
An operating system acts as a bridge between hardware and applications. The CPU handles all system tasks, but sometimes situations arise when it's required to interrupt the currently running task and take rapid action. Therefore, operating systems use two methods: interrupt and polling for dealing with such events. Both methods pause the CPU from its current work and make it execute essential tasks. Both interrupt and polling differ significantly from each other in several ways. In this article, we will discuss the important differences between interrupt and polling in operating systems. What is Interrupt? A signal to ...
Read MoreDifference between Asymmetric and Symmetric Multiprocessing
In asymmetric multiprocessing, all the processors are not identical and they follow a master-slave relationship; whereas in symmetric multiprocessing, all the processors are identical and they share the main memory. This tutorial explores both asymmetric and symmetric multiprocessing systems, highlighting their key differences in architecture, processor roles, and implementation approaches. What is Asymmetric Multiprocessing? Asymmetric Multiprocessing (AMP) is a multiprocessor architecture where two or more processors are controlled by one master processor. All CPUs are interconnected but are not self-scheduling, with specific tasks assigned to processors based on priority and importance. In AMP systems, processors have ...
Read MoreAddress Space Layout Randomization (ASLR)
Address Space Layout Randomization (ASLR) is a critical security mechanism that randomizes the memory layout of running programs to prevent attackers from predicting memory addresses. This makes it significantly harder for malicious code to exploit memory corruption vulnerabilities. Memory corruption vulnerabilities occur when a program mistakenly writes attacker-controlled data outside of an intended memory region. This may crash the program or, worse, provide the attacker full control over the system. ASLR serves as a failsafe mechanism to limit the damage should such vulnerabilities be exploited. How ASLR Works ASLR works by randomizing the memory locations where program ...
Read MoreLongest Job First (LJF) CPU Scheduling Algorithm
Longest Job First (LJF) is a CPU scheduling algorithm that prioritizes processes based on their burst time. In LJF, the processes with the largest burst time are given priority over the shorter ones. This algorithm works on a non-preemptive basis, meaning once a process is started, it will continue to run until it completes, and no other process can preempt it. To implement the LJF algorithm, processes are sorted in the ready queue based on their burst times in descending order. The process with the largest burst time among all the processes that have arrived until that time is ...
Read MoreOperating System Based Virtualization
Operating System-based Virtualization is a virtualization technique where virtualization software runs on top of a host operating system, creating isolated environments called containers. This approach allows multiple applications or services to run independently on the same physical hardware while sharing the underlying OS kernel. The virtualization layer creates abstraction between the hardware and applications, enabling better resource utilization and isolation. Unlike traditional virtualization that creates complete virtual machines, OS-based virtualization shares the host kernel among containers, making it more lightweight and efficient. Operating System-Based Virtualization Architecture Physical Hardware ...
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