Step 5 instruction specifies the replica2 node to be the left node

But step 5.4 implies that the replica1 node be the left node.

The grade will fail if the replica2 is the left node and only pass if the replica1 is the left. see the screenshot.

The statement, "Hover over the replica1 node and click the domain suffix. Select replica2 as the other end of the new topology segment. Enter replica-agreement as the segment name, and then click Add," implies that you are creating a replication agreement with replica1 (the domain suffix) as the left node and replica2 as the right node.

In typical replication agreements, the left node is the source from which data is replicated, and the right node is the target where data is replicated to. So, in this context, replica1 is the left node, and replica2 is the right node.