Computer Quiz: Short Trivia Test! Test Your Knowledge

CRT stands for Cathode Ray Tube. A cathode ray tube is a vacuum tube that contains an electron gun and a fluorescent screen. When an electric current is applied to the electron gun, it emits a beam of electrons that strikes the fluorescent screen, producing an image. CRTs were commonly used in older television sets and computer monitors. They have been largely replaced by flat-panel displays such as LCD and LED screens, which are thinner and more energy-efficient.

The correct answer is Liquid Crystal Display. LCD stands for Liquid Crystal Display, which is a type of flat panel display commonly used in electronic devices such as televisions, computer monitors, and smartphones. LCD technology uses liquid crystals to create images by manipulating the light passing through them. This allows for a thin and energy-efficient display with high resolution and color accuracy.

The given answer, "Internet," is the correct answer because it accurately describes the global system of interconnected computer networks that use the standard Protocol Suite (TCP/IP) to serve billions of users. The Internet is a network of networks that allows for communication, information sharing, and access to various services and resources worldwide.

Ctrl S is the shortcut key for saving a file. By pressing Ctrl S, the user can quickly save any changes made to a document or file without having to go through the menu options. This shortcut is commonly used in various software applications and is a convenient way to save work and prevent data loss.

DARPA, which stands for Defense Advanced Research Projects Agency, is credited with inventing the internet. In the late 1960s, DARPA funded a project called ARPANET, which laid the foundation for the modern internet. The goal was to create a network that could connect computers and facilitate communication and data sharing. Through their research and development efforts, DARPA played a crucial role in creating the technology and protocols that eventually led to the internet as we know it today.

A modem is a device that modulates and demodulates signals, allowing computers or other devices to transmit and receive data over a network. It converts digital data from a computer into analog signals that can be transmitted over telephone lines or other communication channels. On the receiving end, it demodulates the analog signals back into digital data that can be understood by the computer. Therefore, a modem acts as a translator between the digital signals used by computers and the analog signals used by communication channels.