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NO.1 A company uses SharePoint for internal collaboration. SharePoint is deployed on a server farm
with a single front-end server, a single application server, and a dedicated database server.
You review existing Web Parts that read from and write to SharePoint lists. You find the following
code in one of the utility classes and notice memory leaks in the method.
You need to ensure that there are no memory leaks in the method.
What should you do?
A. Add a finally statement and include siteCollection.Dispose ();
B. Add siteCollection.Dispose() to the catch statement.
C. Add site.Dispose() to the catch statement.
D. Add a finally statement and include site.Dispose ().
Answer: A

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Explanation:
Need to manually dispose of the siteCollection instance. This can be done through a finally
statement.
Note:
* Try and finally blocks or a using statement would be required to avoid potential leaks
when you create a disposable object within a foreach block, as shown in the following code
example.
SPWebApplication webApp = siteCollectionOuter.WebApplication;
SPSiteCollection siteCollections = webApp.Sites;
SPSite siteCollectionInner = null;
foreach (siteCollectionInner in siteCollections)
{
try //Should be first statement after foreach.
{
Console.WriteLine(siteCollectionInner.Url);
//Exception occurs here.
}
finally
{
if(siteCollectionInner != null)
siteCollectionInner.Dispose();
}
}
* Why Dispose? Several of the Windows SharePoint Services objects, primarily the SPSite class and
SPWeb class objects, are created as managed objects. However, these objects use unmanaged code
and memory to perform the majority of their work. The managed part of the object is much smaller
than the unmanaged part. Because the smaller managed part does not put memory pressure on the
garbage collector, the garbage collector does not release the object from memory in a timely
manner. The object's use of a large amount of unmanaged memory can cause some of the unusual
behaviors described earlier. Calling applications that work with IDisposable objects in Windows
SharePoint Services must dispose of the objects when the applications finish using them. You should
not rely on the garbage collector to release them from memory automatically.
Reference: Best Practices: Using Disposable Windows SharePoint Services Objects

NO.2 HOTSPOT
A web application that listens on port 80 has been created for Internet users to access your
company's SharePoint site.
The web application uses claims-based authentication.
Users report that they are prompted for credentials when they access the site in their browser.
You need to enable anonymous access.
On the Manage web applications page in Central Administration, which option should you select? (To
answer, select the appropriate menu item in the answer area.)
Answer: