TeamOn Systems Inc. wants to ensure that their network is set up properly in order to host the BlackBerry solution. Given their international locations, how should the BlackBerry Enterprise Server…

Question

Options

• ATwo BlackBerry Enterprise Server instances in Texas, one in Hong Kong
• BTwo BlackBerry Enterprise Server instances in Australia, one in Texas
• CThree BlackBerry Enterprise Server instances in Hong Kong
• DOne BlackBerry Enterprise Server local to each messaging server location
• EOne BlackBerry Enterprise Server local to each Microsoft SQL Server location

• A
  8% (3)
• C
  5% (2)
• D
  85% (34)
• E
  3% (1)

Explanation

Placing one BlackBerry Enterprise Server (BES) local to each messaging server (option D) is correct because BES must be co-located with the messaging server (e.g., Microsoft Exchange, IBM Lotus Domino) it services - this minimizes latency, ensures reliable real-time synchronization of email and data, and follows BlackBerry's own deployment architecture requirements for enterprise environments.

Why the distractors are wrong:

• A & B arbitrarily concentrate multiple BES instances in one or two regions, leaving other messaging server locations without a local BES - violating the co-location requirement.
• C places all three instances in a single location (Hong Kong), which would be unsuitable for servers in Texas or Australia and creates a single point of geographic failure.
• E is a common trap - BES does use Microsoft SQL Server for its database, but BES placement is driven by messaging server proximity, not SQL Server proximity.

Memory tip: Think of BES as a "shadow" of the messaging server - wherever a messaging server lives, its BES shadow must live right beside it. The rule is: one BES per messaging server location, not per database, per region, or per office.

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