After completing a successful deployment of BlackBerry devices, the company is adding an additional 51 messaging servers across the four offices, which all support BlackBerry device users. What…

Question

Options

• ACreate a BlackBerry Router pool
• BIncrease bandwidth to Microsoft SQL Server
• CAdd a standby BlackBerry Enterprise Server instance
• DEnsure each messaging server is only being accessed by one BlackBerry Enterprise Server
• EEnsure each BlackBerry Enterprise Server is only connecting to one messaging server

• A
  6% (1)
• C
  6% (1)
• D
  72% (13)
• E
  17% (3)

Explanation

Option D is correct because BlackBerry Enterprise Server (BES) performance degrades when multiple BES instances compete for access to the same messaging server - each messaging server should have a dedicated, single BES instance managing it to avoid resource contention and ensure predictable, optimal throughput across all 51 servers.

Why the distractors are wrong:

• A (Router pool): A BlackBerry Router pool addresses connection routing and load distribution, not messaging server access optimization.
• B (SQL Server bandwidth): The SQL Server stores BES configuration/data, but it is not the bottleneck in a multi-messaging-server deployment scenario.
• C (Standby BES instance): A standby instance addresses high availability and failover - a redundancy concern, not a performance concern.
• E (BES connecting to only one messaging server): This reverses the relationship - a single BES can efficiently manage multiple messaging servers; the problem is the inverse, where multiple BES instances fight over one messaging server.

Memory tip: Think of it as a "dedicated manager" rule - each messaging server needs its own BES manager (1 server : 1 BES), but one manager can oversee several servers. The bottleneck is always at the messaging server end, not the BES end.

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