How do I cast smart pointers using dynamic and static casting in Microsoft C++ 11

Hi:

I've got a couple of questions regarding smart pointers and casting in Microsoft C++ 11.
It's been a while since I have done C++. I've been doing .Net/C# for a while now.

Consider the following class definitions and variables:

Class Foo {};
Class FooA : public Foo {};
Class FooB : public Foo {};

shared_ptr<FooA> fooA = make_shared<FooA>();
shared_ptr<FooB> fooB = make_shared<FooB>();
shared_ptr<Foo> someFoo;
shared_ptr<FooA> someFooA;

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1) How do I dynamically downcast from fooA to someFoo?

2) How do I do that with a static cast?

3) If we assume that someFoo has been assigned somewhere further upstream,
    how do I dynamically cast someFoo to someFooA?

4) How do I do that statically?

5) If I was using raw pointers, I could do the following

if (dynamic_cast<FooA *>(someOtherFoo) != nullptr)
{
}

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What's the best way to do this using smart pointers and casting?

Thanks,
JohnB