A developer must create a ShippingCalculator class that cannot be instantiated and must include a working default implementation of a calculate method, that sub-classes can override.
What is the correct implementation of the ShippingCalculator class?

Universal container wants a list button to display a visualforce page that allows users to edit multiple records which visualforce feature supports this requirement.

Assuming that name is a String obtained by an tag on a Visualforce page, which two SOQL queries performed are safe from SOQL injection? Choose 2 answers A) B)

C)
D)

What is a characteristic of the Lightning Component Framework? Choose 2 answers:

Refer to the following code snippet for an environment that has more than 200 Accounts belonging to the Technology' industry:

which three statements are accurate about debug logs?
Choose 3 answers