ServiceNow CAD free question 5 / 10 · Domain 1: Designing and Creating an Application
For a choice field, a developer wants the form never to show an empty -- None -- option, so that a value is always selected. Which Choice setting in the dictionary, together with its requirement, is correct?
- Dropdown without -- None --, with no default value needed
- Dropdown with -- None --, which adds an empty option at the top
- Dropdown without -- None --, and the Default field must be populated
- Suggestion, which shows the choices as suggestions while the user types
Show the answer and explanation
Answer: C
Why this is correct
To remove the None option, open the dictionary entry for the field and change the Choice value to Dropdown without -- None --. The option name itself carries the condition, "must specify a default value", and the next step of the procedure is to ensure that the Default field is populated to determine which choice is displayed by default. Without an empty option, something has to be selected from the start.
Why the other options are wrong
"Dropdown with -- None --, which adds an empty option at the top" … This keeps the empty option, which is the opposite of the requirement. The -- None -- entry stays in the list, so users can still leave the field without a value.
"Suggestion, which shows the choices as suggestions while the user types" … This is not the setting the procedure uses to remove the empty choice. Only Dropdown without -- None -- takes the -- None -- option away.
"Dropdown without -- None --, with no default value needed" … The option is right but the condition is wrong. Dropdown without -- None -- must specify a default value, and the procedure tells you to make sure the Default field is populated.
Additional detail
A choice list lets the user select only one choice at a time; choice lists do not support a one-to-many relationship. If a field needs several values, a choice list is the wrong field type.
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