You are an Enterprise administrator for contoso.com. The company has a head office and a branch office. The corporate network of the company consists of a single Active Directory domain. The functional level of the domain is Windows Server 2008. All the servers in the domain run Windows Server 2008 and all client computers run Windows Vista.
For both the head office and the branch office an Active Directory site is available. You have been assigned the task to deploy file servers in each office and design a file sharing strategy.
Your file sharing strategy should ensure that the users in both offices must be able to access the same files using the same Universal Naming Convention (UNC) path to access files. You design must ensure the use of minimum amount of bandwidth used to access files and the availability of files even if a server fails.
Which of the following options would you choose to accomplish the desired goal?

A.
A multi-site failover cluster having one of the servers located in the head office and the other located in the branch office.

B.
A stand-alone DFS namespace that uses replication.

C.
A domain-based DFS namespace that uses replication.

D.
A Network Load Balancing cluster having one of the servers located in the head office and the other located in the branch office.

E.
None of the above

Explanation:

To deploy file servers in each office and design a file sharing strategy with given requirements, you need to deploy a domain-based DFS namespace that uses replication.
The domain based namespaces require all servers to be members of an Active Directory domain. These types of environments support automatic synchronization of DFS targets. The namespace root namespace is based on a combination of the server’s NetBIOS name and a root name, and is listed in the DNS.
Ina domain environment, a server is capable of hosting multiple DFS roots. Using multiple replicas provides you with a degree of scalability. Rather than having every user in your organization access their files from the same server, you can distribute the user workload across multiple DFS replicas rather than over burdening a single server.
Another reason for having multiple DFS replicas is because doing so provides you with a degree of fault tolerance.DFS can also provide fault tolerance from the standpoint of protecting you against network link failures.