Digital Multimedia Vocabulary Test

Explanation
Digital music players work differently than other music players because they have a solid-state memory that has no moveable parts. This means that instead of using a traditional spinning hard drive, digital music players use flash memory to store and play music. This makes them more durable and less prone to damage from physical shocks or drops. Additionally, solid-state memory allows for faster access to music files, resulting in quicker navigation and playback.

Explanation
Video on demand systems use digital technology to make television interactive. With video on demand, viewers can choose and watch video content whenever they want, rather than being limited to scheduled programming. This technology allows users to pause, rewind, fast-forward, and even interact with the content through features like interactive menus and additional information. By providing a personalized and interactive viewing experience, video on demand systems enhance the traditional television experience and give viewers more control over their entertainment choices.

Explanation
The correct answer is "Internet". The Internet is a global network of computers that allows for the exchange of information and communication between users worldwide. It is a vast interconnected network that enables the sharing of resources, such as websites, emails, and files, through various protocols and technologies. The Internet has revolutionized the way people connect, access information, and conduct business on a global scale.

Explanation
In AM radio transmission, the amplitude of the carrier wave changes to carry the audio signal. This is achieved by varying the strength of the carrier wave in proportion to the amplitude of the audio signal. As a result, the peaks and troughs of the carrier wave are modulated to match the varying amplitude of the audio signal, allowing the signal to be transmitted over long distances and received by radio receivers.

Explanation
FM broadcasting is a type of radio broadcasting where the frequency of the carrier wave changes. Unlike AM broadcasting, which varies the amplitude of the carrier wave, FM broadcasting modulates the frequency to transmit audio signals. This modulation technique allows for higher quality sound and less susceptibility to interference. FM broadcasting is commonly used for commercial radio stations and offers a wider range of frequencies, providing more channels for broadcasting.