Introduction When it comes to gaming monitors, one of key specifications that is often discussed is refresh rate. A monitor's refresh rate determines how many times per second screen is updated with new information. two most popular refresh rates are 60 Hz and 144 Hz. While many gamers swear by ... Read More

Introduction Computer networking is a critical aspect of modern technology. In today's connected world, almost every organization relies on networking to share data and resources. Networking involves connection of multiple devices, such as computers, servers, printers, and other hardware devices, to facilitate communication and data transfer. Aspiring network engineers and ... Read More

Introduction The fifth-generation wireless network (5G) is latest standard in mobile communication technology, and it is set to revolutionize way we interact with world around us. It is an upgraded version of fourth-generation (4G) wireless network, with faster internet speeds, lower latency, and higher capacity. 5G network is poised to ... Read More

The Internet of Things (IoT) has emerged as one of most transformative technological innovations of modern era, enabling interconnectivity of devices and machines that we use in our daily lives. IoT has revolutionized way we interact with technology and world around us, paving way for new business models, improved efficiency, ... Read More

Introduction Mobile communication technology has undergone significant advancements in recent years, and 4G mobile communication technology is one such example. 4G or Fourth-generation mobile communication technology is most recent and advanced version of mobile communication network that provides better speed, capacity, and coverage than its predecessors. It was first introduced ... Read More

Introduction As world continues to grow more digital, need for secure and robust authentication systems becomes increasingly important. Passwords have been traditional method of authentication, but with rise of hacking and other cyber crimes, new authentication methods are needed. One such method is 3D passwords, an advanced authentication system that ... Read More

Ubuntu 22.04 LTS (Focal Fossa) is latest long-term support release of Ubuntu, which means that it will be supported for five years with security updates and bug fixes. If you have just installed Ubuntu 22.04 LTS, congratulations! You are now ready to explore world of Ubuntu and take advantage of ... Read More

Introduction Integrity of files and directories is an essential aspect of system security and data protection. File integrity refers to the accuracy and completeness of the information stored in a file, while directory integrity concerns the structure, permissions, ownership, and attributes of directories. When files or directories are tampered with ... Read More

Introduction As a programmer or system administrator, you may need to check for file or directory existence frequently. Bash, which stands for "Bourne-Again SHell", is a Unix-based command-line interface that provides powerful scripting capabilities. In this article, we will explore how to check if a file or directory exists in ... Read More

Introduction Checking disk space in Linux is a crucial task for maintaining the health of your system. Disk space is limited, and running out of it can lead to system failure, data loss, and reduced performance. It is essential to know how much disk space you have available and ... Read More