Computer (Physics) (Part-5)

Phishing is an attempt to obtain sensitive information such as usernames, passwords, and credit card details, etc., for malicious reasons, by posing as a trustworthy source in email.

These deceptive emails often try to trick you into clicking on a malicious link or providing your information directly.

They might impersonate banks, online retailers, social media platforms, or even government agencies to appear legitimate.

In computer science, VoIP stands for Voice over Internet Protocol. 

It's a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line.

VoIP converts your voice into digital data which is then transmitted over the internet.

The inability of the network to deliver data due to being overloaded with enormous data sent by many computers is termed network congestion.

• Think of it like a traffic jam on a highway.
• When too many cars try to use the same road at the same time, traffic slows down or even comes to a standstill.
• Similarly, when a network has more data traffic than it can handle, it leads to congestion, resulting in delays, packet loss, and the inability to deliver data efficiently.

The Internet is a global system of interconnected government, academic, corporate, public, and private computer networks.

It's often referred to as a "network of networks" because it connects millions of smaller domestic, academic, business, and governmental networks all around the world.

The Internet uses the Internet Protocol suite (TCP/IP) to link devices worldwide.

A topology for a Local Area Network (LAN) in which all nodes are individually connected to a central connection point like a hub or switch is called a star topology.

1. Each device (node) has its own dedicated connection to the central hub or switch.
2. All communication between devices goes through the central hub or switch.
3. The central device acts as a relay point for data transmission.

This topology is popular due to its ease of installation, troubleshooting, and the fact that the failure of one node doesn't affect the rest of the network. However, the entire network's functionality depends on the central hub or switch.

It has a stylus like a pen, using which a person can draw pictures or graphics.

Joysticks are often used to control video games.

A digitizer is a device that receives analog signals, such as sound or light, and transforms them into digital representations that can be processed by a computer.

This process is called digitization.