Answer:
A rack is a metal frame used to hold various hardware devices such as servers, hard disk drives, modems and other electronic equipment.
A tower is a metal chassis that holds all of the computer's components.
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Radio buttons exist like selection lists in which they limit fields to a set of potential values; but, unlike selection lists, the options appear as respective controls in the web form.
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What is Radio button?</h3>
A radio button or option button exists as a graphical control element that permits the user to select only one of a predefined set of mutually exclusive options. The singular property of a radio button causes it distinct from checkboxes, where the user can select and unselect any numeral of items.
Radio buttons exist as a common way to permit users to make a single selection from a list of options. Since only one radio button can be selected at a period (within the same group), each available option must be its item and label. Radio buttons exist like selection lists in which they limit fields to a set of potential values; but, unlike selection lists, the options appear as respective controls in the web form.
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Excel Macros, or .xlsm, stores automated steps for repetitive tasks.
