BCP-620 · Question #37
In an environment two BlackBerry Enterprise Server instances (BES1, BES2) have the same hardware configuration. BES1 connects to a Microsoft SQL Server 2005 Standard SP2; BES2 connects to a…
The correct answer is C. Add all users from Exch1-Exch4 to BES1 and all users from Exch5-Exch7 to BES2. Option C is correct because it assigns complete Exchange servers to each BES instance, rather than splitting users from the same Exchange server across both. This eliminates the overhead of both BES instances maintaining active connections and synchronization threads to the…
Question
In an environment two BlackBerry Enterprise Server instances (BES1, BES2) have the same hardware configuration. BES1 connects to a Microsoft SQL Server 2005 Standard SP2; BES2 connects to a Microsoft SQL Server 2005 SP2 Express. They both connect into seven Microsoft Exchange Servers (Exch1-Exch7), each with 300 BlackBerry device users for a total of 2100 users. What would be the most efficient distribution of users for each BlackBerry Enterprise Server instance? (Choose one)
Options
- AAdd 150 users from each Microsoft Exchange Server to each BlackBerry Enterprise Server instance
- BAdd 100 users from each Microsoft Exchange Server to BES2 and 200 users from each Microsoft
- CAdd all users from Exch1-Exch4 to BES1 and all users from Exch5-Exch7 to BES2
- DAdd 200 users from each Microsoft Exchange Server to BES2 and 100 users from each Microsoft
- ERandomly add all users to the two BlackBerry Enterprise Server instances for the complex algorithm
How the community answered
(58 responses)- A10% (6)
- B2% (1)
- C78% (45)
- D7% (4)
- E3% (2)
Explanation
Option C is correct because it assigns complete Exchange servers to each BES instance, rather than splitting users from the same Exchange server across both. This eliminates the overhead of both BES instances maintaining active connections and synchronization threads to the same Exchange servers simultaneously - BES1 handles Exch1–4 (1,200 users) while BES2 handles Exch5–7 (900 users). Crucially, this also respects the hardware difference: BES2 runs SQL Server Express, which has a 4GB database size cap and performance constraints vs. Standard, so it should carry the lighter load.
Why the distractors fail:
- A splits users evenly (1,050 each), ignoring BES2's SQL Express limitations and forcing both BES instances to connect to all 7 Exchange servers.
- B & D split users from individual Exchange servers across both BES instances, creating unnecessary dual-connection overhead to those servers.
- D specifically gives BES2 more users (1,400) - the opposite of what its limited SQL Express edition supports.
- E is random distribution, which is never an efficiency strategy.
Memory tip: Think "whole servers, not split servers." Assigning entire Exchange servers to a single BES is always more efficient than splitting one Exchange server's users across two BES instances. Then give the heavier Exchange load to whichever BES has the full SQL Server edition.
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