SSShashi Shekharinpointers.hashnode.dev·May 26, 2025 · 4 min readOSPF and BGPOSPF (Open Shortest Path First) is: A link-state routing protocol (vs. distance-vector like RIP) Link-State refers to the state (up/down, cost) of the directly connected interfaces (links) on a router Designed for intra-domain routing (within a s...00
SSShashi Shekharinl-two-protocols.hashnode.dev·Jan 20, 2025 · 4 min readFirewallA firewall is a network security device or software that monitors and controls incoming and outgoing network traffic based on predefined security rules. It acts as a barrier between trusted and untrusted networks (e.g., your internal network and the ...00
SSShashi Shekharinpointers.hashnode.dev·Jan 10, 2025 · 8 min readKey concepts in C/C++Static Keyword In C/C++, a static variable can be: 1. Inside a function (local static variable) – retains value across function calls. 1.1 - A local static variable is initialized only once and retains its value across multiple calls. 2. Outside a fu...00
SSShashi Shekharinpointers.hashnode.dev·Jan 10, 2025 · 10 min readObject Oriented Programming1. Basics of OOPs Core Principles: Encapsulation: Wrapping data (attributes) and methods (functions) together into a single unit, typically a class. Inheritance: Enabling a new class to inherit properties and behavior from an existing class. Polym...00
SSShashi Shekharindynamicmemoryallocation.hashnode.dev·Jan 10, 2025 · 4 min readStorage System Architecture1. Basics of Storage Systems Definition A storage system is a collection of hardware and software resources designed to store, manage, and retrieve data efficiently and reliably. Key Components Storage Media: Hard Disk Drives (HDDs): Traditional ma...00