Datasheet

Chapter 1



Designing and Planning Messaging Services

17. C. This question is about a routing feature called delayed fan-out. Basically, a message with

multiple recipients is kept as one message until the routing path divides. In our situation this

means that the message is kept as a single message until Site 2. There it will be divided, as Site 3

and 4 are directly connected to Site 2. The great benefit is bandwidth savings, especially consid-

ering that the message was 5 MB in size. Option A would be the most bandwidth-consuming one,

so it is wrong. Option B would send a single message for each site, not considering the routing

path; therefore it is also wrong. Option D considers sending a message from Site 1 to Site 2 and

then to Site 3 and then to Site 4, which is not the way delayed fan-out is implemented in Exchange

Server 2007.

18. C. This question is about an Exchange Server 2007 routing feature called queue at point of fail-

ure. If the Hub Transport server cannot make a direct connection to the target AD site, it will

calculate the least-cost routing path for the message and go backwards. Thus the Hub Trans-

port server will first try to connect to the target AD site named Site 4, then try Site 3, and if no

Hub Transport is reachable there it would give Site 2 a try. As every Hub Transport server is

capable of communicating with other AD sites, there would are no intra-AD site transfer of

messages in Exchange Server 2007.

19. A, C, E. Exchange Server 2007 includes only three types of external connectors: a Send connec-

tor and a Receive connector that both support SMTP message transfer, and a Foreign connector

that uses a Drop directory to send and receive messages from any foreign system, like a fax sys-

tem. Old connectors like Lotus Notes Domino or X.400 connector are not available in Exchange

Server 2007.

20. A, B, C, E. This is quite a complex scenario that includes an awful lot of information. The key

here is to ask if the topics make sense during planning. This is true for option A, as it is always

key to evaluate the network topology—especially the bandwidth—before considering a data cen-

ter approach. Option B is obvious: you have to review the AD site design. Option C should test

your skills regarding domain preparation in a multidomain environment, and is also true. Option

D is wrong. You can also have a split-permissions model within a single forest; thus you do not

need to plan for an extra forest implementation. Option E is important and valid, as it will opti-

mize any routing that occurs in the Exchange organization. If you have firewalls between AD

sites, you must configure a hub site so Exchange routing knows about it.

81461.book Page 44 Wednesday, December 12, 2007 4:49 PM