HOTSPOT
A three-tiered SharePoint farm contains two front-end web servers, one application server, and one
enterprise database server. The database server is also used by other critical line-of-business
applications. You do not have administrative rights on the database server.
The SharePoint content databases are fragmented and are degrading the performance of other
databases.
You need to access the correct tools for performing maintenance on the SharePoint content databases.Which option should you choose? (To answer, select the appropriate option in the answer area.)
Answer: 
Explanation:
Note:
Resolution: Enable and run the crawl database defragmentation health rule
1. Verify that the user account that is performing this procedure is a member of the Farm
Administrators group.
2. In Central Administration, on the home page, click Monitoring.
3. On the Monitoring page, in the Health Analyzer section, click Review rule definitions.4. On the All Rules page, in the Performance section, click Search – One or more crawl databases
may have fragmented indices.
5. If the rule is not enabled, in the Health Analyzer Rule Definitions dialog, click Edit Item on the
ribbon. Ensure that the Enabledcheck box is selected, and then click Save on the ribbon.
6. On the ribbon, click Run Now.
7. Click Close.
The rule iterates over all crawl databases in all Search service applications. When it runs, it attempts to
perform an online defragmentation first, and then it switches to offline defragmentation where
required. In online defragmentation, only the SQL Server leaf pages are defragmented, not the SQL
Server locked pages. In offline defragmentation, the locked pages and all the leaf pages are
defragmented. Search – One or more crawl databases may have fragmented indices (SharePoint 2013)