A standard keyboard used in personal computer has:
Tap an option to check yourself.
Answer: C) 101 keys
The standard keyboard used in personal computers is called the Enhanced Keyboard (or AT Enhanced Keyboard).
It has 101 keys in the common US layout.
(Some European versions have 102 keys, and modern Windows keyboards have 104 keys with the Windows and Menu keys. But in most basic computer exam questions, the accepted standard answer is 101 keys.)
Source: Scan #1 page 2 Q248