ITPEC FE Morning April 2020 Question 24

Topic: Human InterfaceAlso asked in October 2020

Among GUI components, which of the following is an appropriate use of a radio button?

a)To select one item from a list of items or type a new item in a text boxb)To select one item from a list of items that appears when activatedc)To select one item from a group of mutually exclusive itemsd)To select one or more items from a group of items

Explanation

Selecting one item from a group of mutually exclusive items — radio buttons allow exactly one choice in their group.

Radio buttons are shown together as a group; selecting one clears whichever was selected before, like the station buttons on an old car radio. They suit a small set of options that are all visible at once and exclude each other, such as a payment method or a shipping speed.

Answer (c)

Why not others:

•(a) — choosing from a list or typing a new value into a text box is a combo box
•(b) — a list that opens when the control is activated is a drop-down list (pull-down menu)
•(d) — selecting one or more items from a group is the job of check boxes, which are independent of each other

Key rule: Match the GUI control to the choice: radio buttons for one of a few visible options, check boxes for any number, drop-down lists for one of many, combo boxes when a new value may also be typed.

Human Interface · AI-written, may contain errors

Previous Next

Practice this exam

This question comes from an official ITPEC past paper. ITPEC Practice is an independent study tool and is not affiliated with ITPEC. See the official FE past-paper collection or Report an issue.