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Tech Tutorials | App Reviews & Android Fixes | Fintech Shield Blog
Welcome to the Fintech Shield Blog | Your go-to hub for insightful Tech Tutorials, Unbiased App Reviews, Android Solutions, and Digital innovation tips. Whether you're a curious user or a seasoned tech pro, we’ve got something valuable for you.
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What Are Web Applications? Features, Examples & Benefits Explained
Web applications have transformed how we work, connect, and manage everyday tasks from streaming services to online banking. In this blog, we dive into what web applications are, how they work, the different types (like SaaS and PWAs), and why they’ve become the backbone of modern digital experiences. Whether you're a tech enthusiast or a casual user, this guide will help you understand the power behind your favorite online tools.
Kalyan Bhattacharjee
Aug 164 min read


Japan's NICT Breaks World Record with 402 Tbps Internet Speed
Japan’s National Institute of Information and Communications Technology (NICT) has set a new world record by achieving an astonishing internet speed of 402 Tbps, redefining what ultra-fast connectivity means. Using advanced multicore fiber optic technology, this breakthrough opens the door to real-time AI processing, massive data transfers, and a future where downloading entire libraries takes mere seconds. Here's a closer look at how this innovation could reshape the digital
Kalyan Bhattacharjee
Jul 203 min read


What Is WPA? Wi-Fi Protected Access Explained Simply
WPA is the security protocol behind your Wi-Fi connection. This beginner's guide explains what WPA means, how it works, and which version is best.
Kalyan Bhattacharjee
Jul 123 min read


What Is a Dynamic IP Address? Everything You Need to Know
Wondering why your IP keeps changing? This beginner’s guide explains what dynamic IP addresses are, how they work, and why most ISPs use them.
Kalyan Bhattacharjee
Jul 104 min read


Secure Internal Communication: Why It’s Critical for Cybersecurity & DevOps
In an age where data breaches and cyber threats are constantly evolving, secure internal communication is no longer optional it’s essential. Whether you're managing a growing app, a cloud-based business, or an enterprise network, protecting the flow of data between services, servers, and internal APIs is critical.
Kalyan Bhattacharjee
Jul 94 min read


Best VPN Apps for Android in 2025 (Free & Paid Options)
Struggling to find a reliable VPN for your Android phone in 2025? Here’s your complete guide to the best free and paid VPN apps tested for speed, security, and value.
Kalyan Bhattacharjee
May 303 min read


Cloud Frameworks: AWS vs Azure vs Google Cloud (2025 Guide)
In 2025, AWS, Azure, and Google Cloud lead the cloud computing space. This blog breaks down their key features, pricing, and best use cases to help you choose the right platform. Whether you're a startup, developer, or enterprise, understanding these differences is essential for making informed decisions.
Kalyan Bhattacharjee
May 93 min read


eSIM Technology: The Future of Mobile Connectivity
Say goodbye to physical SIM cards—discover how eSIM is changing mobile connectivity forever.
Kalyan Bhattacharjee
Apr 223 min read


Bus Topology in Networking: Simple Yet Foundational
Learn what Bus Topology is, how it works, its pros & cons, and where it's still used today in this beginner-friendly networking guide.
Kalyan Bhattacharjee
Apr 163 min read


Star Topology Diagram: Structure, Functionality & Benefits
Star topology is a network setup where devices connect to a central hub or switch, ensuring easy management and high reliability.
Kalyan Bhattacharjee
Apr 23 min read


Satellites: Types, Functionality & Their Role in Modern Technology
Satellites play a vital role in communication, navigation, weather forecasting, and space research. Learn about their types, functions etc.
Kalyan Bhattacharjee
Mar 244 min read


Telecommunication | Connecting the World in the Digital Age
Explore how telecommunication shapes our digital world, connecting people and businesses through cutting-edge technology and innovation.
Kalyan Bhattacharjee
Mar 102 min read


Cybersecurity Threat Detection: Key Elements of Network Security Monitoring
Ensure robust cybersecurity with effective Network Security Monitoring. Learn key factors to detect threats, and prevent breaches.
Kalyan Bhattacharjee
Jan 83 min read


Network Security Key | What It Is and Why It Matters (2025 Guide)
A Network Security Key is more than just a Wi-Fi password. It's your first line of defense against unauthorized access to your private network. In this blog, we explore what a network security key is, the different types (WEP, WPA, WPA2/WPA3), and why understanding it is crucial for protecting your digital footprint. Whether you're a home user or managing a business network, knowing how this key works can help you secure your data and prevent cyber threats.
Kalyan Bhattacharjee
Aug 26, 20245 min read


What is a Subnet Mask? The Key to Efficient Networking
A subnet mask is a crucial component in IP networking that helps divide large networks into smaller, more manageable sub-networks or subnets. It works by identifying which portion of an IP address refers to the network and which part refers to the host. By using subnet masks, organizations can improve network performance, enhance security, and efficiently allocate IP addresses.
Kalyan Bhattacharjee
Aug 22, 20245 min read


Hybrid Topology | Network Solution for Modern Businesses
Hybrid topology blends star, bus & ring networks offering flexibility, scalability & reliability for modern business needs.
Kalyan Bhattacharjee
Apr 7, 20243 min read


DHCP vs Static IP | Choosing the Right Network Configuration
When setting up a network, choosing between DHCP and Static IP addresses can significantly impact performance, security, and management. DHCP offers dynamic, automatic IP assignment—ideal for convenience and scalability—while Static IP provides consistent addressing, often preferred for servers and critical devices. In this blog, we break down the differences, pros, and cons of each configuration to help you make the right choice for your network.
Kalyan Bhattacharjee
Apr 1, 20243 min read


Network Security - A Deep Dive into Firewall Authentication
Firewall Authentication Safeguard Your Data | The Importance of Firewall Authentication Introduction In terms of cybersecurity ,...
Kalyan Bhattacharjee
Mar 22, 20243 min read


DHCP Lookup Failed: Understanding the Issue and Solutions
Facing a "DHCP Lookup Failed" error? Learn what it means, why it happens, and how to fix it for a seamless internet connection!
Kalyan Bhattacharjee
Mar 20, 20243 min read


Windows Internet Issues & How to Fix Them: Internet Troubleshooting
Struggling with internet issues on your Windows PC? From sudden disconnections to slow speeds, these problems can be frustrating. In this blog, we uncover the most common causes of Windows internet issues and provide step-by-step troubleshooting tips to help you restore a stable and fast connection in no time.
Kalyan Bhattacharjee
Feb 3, 20243 min read
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