1. Digital videos look sharpest when they are displayed at a resolution that is larger than the frame size. 2. Digital video is a core technology for which of the following?
(a) digital telivision
(b) video conferencing
(c) video messaging
(d) all of the above

(d) all of the above

Explanation:

This is because, not only is digital video a core technology for digital television, it also happens to be a core technology for video conferencing and video messaging. This could be seen in its application in messaging apps for private discussion of for holding official meetings between employees in virtual conference.

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