Error 404--Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Covers objectives for the Advanced Protocols Series OSPF Exam
This purpose of this exam is to give you advanced knowledge and understanding of the OSPF protocol. The questions and explanations are designed to clarify confusing and at times unexplained concepts that are important to OSPF.
Covered topics include core topics of the standard OSPF protocol: areas (backbone, regular, and stub), interfaces, neighbors, LSAs, virtual-links, etc as well as optional features such as NSSAs, Demand Circuits, Opaque LSAs, Traffic Engineering LSAs, and MOSPF.
Study of the questions and understanding of the answers will increase knowledge of the OSPF protocol, which is necessary for any Network Engineer designing or supporting an OSPF network, as well as help you prepare for many different vendor-specific certification tests.
Because some of the topics covered are at times confusing the authors are available to help clarify and expound on any of the questions or explanations via email.