cassandra sharding and replication

I am new to Cassandra was going though this Article explaining sharding and replication and I am stuck at a point that is -

I have a cluster with 6 Cassandra nodes configured at my local machine. I create a new keyspace "TestKeySpace" with replication factor as 6 and a table in keyspace "employee" and primary key is auto-increment-number named RID. I am not able to understand how this data will be partitioned and replicated. What I want to know is since I am keeping my replication factor to be 6, and data will be distributed on multiple nodes, then will each node will be having exactly same data as the other nodes or not?

What If my cluster has following configuration -

    Number of nodes - 6 (n1, n2 ,n3, n4, n5 and n6).
    replication_factor - 3. 

How can I determine that for any one node (let say n1), on which other two nodes the data is replicated and which other nodes are behaving as different shards.

Thanks in Advance.

Regards, Vibhav

PS - If anybody down votes this question kindly do mention in comments what went wrong.