Your network is configured as shown in the following diagram.
Each office contains a server that has the File Services server role installed. The servers have a shared folder
named Resources. You need to plan the data availability of the Resources folder.
Your plan must meet the following requirements:
If a WAN link fails, the files in the Resources folder must be available in all of the offices.
If a single server fails, the files in the Resources folder must be available in each of the branch offices, and
the users must be able to use existing drive mappings.
Your plan must minimize network traffic over the WAN links.
What should you include in your plan?
A.
A standalone DFS namespace that uses DFS Replication in a full mesh topology.
B.
A domain-based DFS namespace that uses DFS Replication in a full mesh topology.
C.
A standalone DFS namespace that uses DFS Replication in a hub and spoke topology.
D.
A domain-based DFS namespace that uses DFS Replication in a hub and spoke topology.
Explanation:
DISTRIBUTED FILE SYSTEM
High Availabilityof DFS namespace can be achieved by
1. StandaloneDFS namespace: Created on a failover cluster by using the Cluster Administrator snap-in.
2. Domain-basedDFS namespace: Creating multiple root targets on NON-clustered file servers or on the local
storage of the nodes of server clusters. All root targets must belong to the same domain. (Moreover, at least 2
domain controllers are required to ensure high availability as the metadata of domain-based DFS namespace is
stored in the domain controller)
Replication Topologydefines the logical connections that DFSR uses to replicate files among servers.There
are 3 types of topology can be configured:
1. Hub and Spoke. This topology requires three or more members; otherwise this option is unavailable. For
each spoke member, you can choose a required hub member and an optional second hub member for
redundancy. This optional hub ensures that a spoke member can still replicate if one of the hub members is
unavailable. If you specify two hub members, the hub members will have a full-mesh topology between them.
2. Full Mesh. In this topology, every member replicates with all other members of the replication group. This
topology works well when there are ten or fewer members in the replication group. We recommend against
using a full mesh topology if you have more than ten members in the replication group.
3. No Topology. Choose this option if you want to create connections yourself after you finish the New
Replication Group Wizard or the Replicate Folder Wizard. No replication will take place until you create the
connections.
Hub and spoke topology minimizes the network traffic.
http://technet.microsoft.com/en-us/library/hh341464(v=ws.10).aspx
http://technet.microsoft.com/en-us/library/cc757769(v=ws.10).aspx