Your client application connects to HBase for the first time and queries the .META. table. What
information does the .META. table provide to your client application?

A.
The location of a Region

B.
The location of an MMaster

C.
The location of a ZooKeeper

D.
The location of a –ROOT– table

Explanation:
The .META. table keeps a list of all regions in the system. The .META. table
structure is as follows:
Key:
Region key of the format ([table],[region start key],[region id])
Values:
info:regioninfo (serialized HRegionInfo instance for this region)
info:server (server:port of the RegionServer containing this region)
info:serverstartcode (start-time of the RegionServer process containing this region)

Reference:The Apache HBaseReference Guide
http://hbase.apache.org/book/arch.catalog.html(9.2.2. Meta)