All international offices plan to double their BlackBerry device user count in the next year. What is the minimum number of BlackBerry Enterprise Server instances that should be installed for this…

Question

Options

• AOne in Australia, one in Hong Kong, two in Texas
• BOne in Australia, two in Hong Kong, two in Texas
• COne in Australia, two in Hong Kong, three in Texas
• DTwo in Australia, two in Hong Kong, two in Texas
• ETwo in Australia, one in Hong Kong, three in Texas

• A
  2% (1)
• B
  79% (34)
• C
  12% (5)
• D
  2% (1)
• E
  5% (2)

Explanation

Option B is correct because it provides the minimum number of BES instances needed when each office doubles its user count, based on BES's capacity limit of 2,000 users per server instance. After doubling, Australia's user count stays within one server's capacity, Hong Kong's doubled count exceeds 2,000 (requiring a second server), and Texas's doubled count also exceeds 2,000 but stays under 4,000 (requiring exactly two servers).

• A is wrong because it allocates only one server to Hong Kong, which is insufficient once its user count doubles past the 2,000-user limit.
• C is wrong because it assigns three servers to Texas, one more than the minimum needed - the question asks for the minimum.
• D is wrong because it assigns two servers to Australia, which is unnecessary if Australia's doubled count remains under 2,000.
• E is wrong on two counts: it under-provisions Hong Kong (only one server when two are needed) and over-provisions Texas (three servers when two suffice).

Memory tip: Think "2,000 users per BES instance - round up, not down." Calculate each office's post-growth headcount, divide by 2,000, and ceil the result. The answer that matches those exact minimums - no extras, no shortfalls - is always correct.

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