Review

A Web Proxy client requests a Web object, and ISA Server consults the cache to see whether a valid version of the object exists. It then finds that the cached version of the object has expired. Following the applicable routing rule, ISA Server then contacts the remote source over the Internet to retrieve the object, but it finds that the remote source cannot be contacted. What does ISA Server do next?

How does ISA Server determine whether to cache a Web object that has been retrieved from its original location?

Under what conditions will ISA Server cache dynamic content?

What is negative caching, and how do you enable it?

How does ISA Server handle a scheduled content download when the Web server from which the object is being downloaded requires client authentication?