Object Lifecycle in Java
Object Lifecycle in Java The object lifecycle in Java describes the different stages an object passes through—from its creation to the point when its memory is reclaimed by the Java Virtual Machi...
Design Principles in Java
SOLID Design Principles in Java SOLID design principles are five object-oriented design guidelines used to create software that is easier to understand, extend, test, and maintain. SOLID stands for...
File Handling in Java
File Handling in Java File handling in Java is the process of creating, reading, writing, updating, and deleting files using a Java program. File handling allows a program to store data permanently...
Generics in Java
Generics in Java Generics in Java allow classes, interfaces, and methods to work with different data types while maintaining compile-time type safety. Generics were introduced in Java 5. They use t...
Why Networks exists
tuf-plus-ad-2 tuf-plus-ad-1 tuf-plus-ad-3 Introduction A computer network is a system that enables multiple computing devices to communicate and share information with each other. A powerful comput...
How Does a CDN Serve an Image or Video?
tuf-plus-ad-2 tuf-plus-ad-1 Introduction A CDN, or Content Delivery Network, helps websites deliver images, videos, scripts, and other files faster by storing copies of content on servers located c...
What Happens When You Connect to Public Wi-Fi?
tuf-plus-ad-1 Introduction Public Wi-Fi is common in airports, cafes, hotels, malls, libraries, and offices. Connecting to it feels simple, but many networking steps happen in the background before...
What Happens When DNS Fails?
Introduction DNS, or Domain Name System, translates domain names like google.com into IP addresses that computers use for communication. When DNS fails, the browser may know the website name, but i...
What Happens When You Type google.com?
Introduction Typing google.com in a browser looks simple, but many networking steps happen in the background before the page appears. The browser must find the correct server, create a secure conne...
FAQs
tuf-plus-ad-1 FAQs on Switching Why is Packet Switching Better for the Internet? Packet switching is better suited for the modern internet because internet traffic is highly bursty and shared among...
Common Interview Questions on Subnetting
Q1. Given IP Address 10.0.5.130/25, Find the Network Address A /25 prefix leaves: - 32 − 25 = 7 host bits Therefore: 2⁷ = 128 addresses per subnet The subnet boundaries increase in blocks of 12...
How Data Travels Up the OSI Model
Introduction The OSI model explains how network communication is divided into layers. When data is sent, it moves down the OSI model on the sender side. When data is received, it moves up the OSI m...