You have 10 SharePoint Server 2010 Web servers. All of the servers have the query component installed. You need to ensure that search requests are distributed across all Web servers. What should you implement?

A.
Index partitioning

B.
Content sources

C.
A crawl rule

D.
A crawler impact rule

Explanation:
Q019
BURGOS MNEMO: “search requests are distributed across all Web servers” = “Index partitioning”

BURGOS COMMENTS:
About “Index Partition” in Q019, Q044, Q096:
IF “distributed across web servers” THEN “Index Partition”
ELSE no.
About “crawl rule” and “crawler impact rule” in Q019, Q042, Q051, Q072:
IF HAVE “Index partition” OR “Authoritative pages” THEN is this,
ELSE IF “include all of the migrated documents” THEN “crawl rule”
ELSE IF “minimize the amount of resources” THEN “crawler impact rule”

ORIGINAL COMMENTS:
Add or remove an index partition
http://technet.microsoft.com/en-us/library/ee805955.aspx