Whenever the Mgr has to create a Row.
He has to provide a invalid Numeric Index (0XFFFF).
This will result in appending the row to the table.
When the row is created, a unique numeric Index for
the row is internally generated.
For querying any variable in the table for a
particular row or to know number of rows exisiting in
the table the Mgr can do a SNMP walk.