Rather quickly?  Why, do you have some homework due this morning?  :-)  Sorry, just 
kidding.  I'm ornery when I haven't had any coffee.

(disclaimer:  I'm new to OSPF, please correct me if I'm wrong.)

Every router advertises Type 1 LSAs, so it can't be A.  Any DR in an area will 
advertise Type 2, so it can't be B.  Type 3 LSAs are Summary, not Secure, so it's not 
C.  Therefore, the answer is D.

But why?

The idea is that if this is a stub area (not to be confused with stub network), it 
only needs to receive routes about its own AS.  The ABR to a stub area provides a 
default route for destinations outside of the AS.

HTH,
John
 
> Hi Everyone,
> I need an answer rather quickly to this question. =20
> Which LSA type is NOT allowed in the Stub Area?
> 
> A. Type 1, Route LSA
> B. Type 2, Network LSA's=20
> C. Type 3, Secure LSA
> D. Type 5, external LSA
> 
> Many thanks....
> 
> David
> [EMAIL PROTECTED]
> 
> 
> 
> _________________________________
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