I am so confused,i have no idea what these are

When resizing an image for display on a computer monitor you should reduce its resolution to _____?

An audio file that is played as it arrives from the internet without saving it to a users computer is called _____?

One answer to the first one is in the settings on your computer. On my computer, the smallest settings (resolution) is 800 x 600 pixels.

I think the second one is called "wave" file because it has an extension of .wav at the end of the file name.
http://www.wisegeek.com/what-is-a-wav-file.htm
There are undoubtedly others, but this seems to be the most commonly used.

To answer your first question, when resizing an image for display on a computer monitor, you should consider reducing its resolution. Resolution refers to the number of pixels in an image. The higher the resolution, the more detailed the image will appear, but it will also result in a larger file size. Resizing the resolution down to an appropriate size for the monitor will ensure that the image retains its quality while reducing its file size. The specific resolution to use depends on the intended display size, but common resolutions for computer monitors are 1920x1080 (Full HD), 2560x1440 (2K), or 3840x2160 (4K).

To answer your second question, an audio file that is played as it arrives from the internet without saving it to a user's computer is called streaming. Streaming allows users to listen to audio or watch video content in real-time without downloading the entire file. It enables a continuous flow of data from a server to the user's device, allowing playback to begin before the entire file has been transferred. This technology is commonly used in online music platforms, video streaming services, and internet radio stations. Examples of popular streaming services include Spotify, YouTube, and Pandora.