Exam 70-483 topic 1 question 11 discussion

Actual exam question from Microsoft's 70-483

Question #: 11
Topic #: 1

You are creating an application that manages information about zoo animals. The application includes a class named Animal and a method named Save.
The Save() method must be strongly typed. It must allow only types inherited from the Animal class that uses a constructor that accepts no parameters.
You need to implement the Save() method.
Which code segment should you use?

A. Option A
B. Option B
C. Option C
D. Option D

Show Suggested Answer

Suggested Answer: C 🗳️
When you define a generic class, you can apply restrictions to the kinds of types that client code can use for type arguments when it instantiates your class. If client code tries to instantiate your class by using a type that is not allowed by a constraint, the result is a compile-time error. These restrictions are called constraints. Constraints are specified by using the where contextual keyword.
References: http://msdn.microsoft.com/en-us/library/d5x73970.aspx

by Ofer at Feb. 25, 2020, 2:43 p.m.