In MS Access, what is a 'composite key'? MCQ with Answer and Explanation

Question
In MS Access, what is a 'composite key'?
A. A foreign key referencing multiple tables
B. A key used to encrypt the database
C. An index that combines text and numbers
D. A primary key that consists of two or more fields
Answer: Option D
Solution (By JKSSB Mock Tests)
A composite key is a primary key made up of multiple columns.
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Question #1
In Excel, which function returns the serial number of the date that is a specified number of months before or after a start date?
A. EOMONTH()
B. MONTH()
C. DATE()
D. EDATE()
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Correct Answer: Option D

Explanation:
EDATE(start_date, months) shifts date by months.
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Question #2
What is the function of the keyboard shortcut Ctrl + Backspace when editing a document in MS Word?
A. Clears all clipboard memories
B. Deletes the entire active row block layout
C. Deletes the single character immediately to the left of the cursor
D. Deletes the entire word immediately to the left of the cursor
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Correct Answer: Option D

Explanation:
While Backspace removes text character-by-character, pressing Ctrl + Backspace deletes the entire word to the left of the cursor position.
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Question #3
In MS Excel, what occurs if you double-click on the boundary line dividing two column header letters?
A. The columns are combined together
B. The column is automatically hidden from view
C. A new empty column gets inserted between them
D. The column auto-fits its width to match its longest data entry string
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Correct Answer: Option D

Explanation:
Double-clicking a column boundary line triggers the AutoFit feature, adjusting the column width to fit its longest content entry perfectly.
This question belongs to: Computer Microsoft Office
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