Reference to another server

You have two SQL Server 2005 computers. One server is SQL1 and another is SQL2.
You need to access SQL2 from SQL1. You have enough permissions on the two servers.
What should you do?

A. Join the two servers by using four-part syntax: server.database.schema.table
B. Reference SQL2 by using an alias
C. Add SQL2 as a remote server to SQL1
D. Add SQL2 as a linked server to SQL1

Answer:[D]
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