Explanation/Reference:
Explanation:
Client Affinity
NLB offers three types of client affinity to minimize response time to clients and provide generic support for preserving session state. Each affinity specifies a different method for distributing client requests.
Affinity Single: Single
Multiple requests from the same client must access the same member; useful for clusters within an intranet.
This affinity provides the best support for clients that use sessions on an intranet. These clients cannot use No affinity because their sessions could be disrupted.
Incorrect:
Not A: Affinity none: Multiple requests from the same client can access any member; useful for clusters that do not store session state information on individual members.
Reference: Using NLB
http://technet.microsoft.com/en-us/library/bb687542.aspx