Answer:
Answer is A. One.
Refer below.
Explanation:
A data flow cannot go directly back to the same process it leaves. There must be at least one other process that handle(s) the data flow, produce(s) some other data flow, and return(s) the original data flow to the beginning process.
Answer:
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Explanation:
Answer:
a. Object cannot be converted to Person
Explanation:
This program demonstrates polymorphism.
e.g., a Student IS a Person therefore you can call m() with a Student as well as a Person object.
The same goes for GraduateStudent.
However, and Object is not a Person, so the last call fails. This can be deducted by the type checking that happens at compile time.
Answer:
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