How many agents would be used on a BlackBerry Enterprise Server that is connecting to one Microsoft Exchange Server with 800 BlackBerry device users? (Choose one)

Question

Options

• A1
• B2
• C3
• D4
• E5

• A
  10% (2)
• B
  70% (14)
• C
  5% (1)
• D
  15% (3)

Explanation

Option B (2 agents) is correct because BlackBerry Enterprise Server scales its MAPI agents based on user load - a single agent can handle up to approximately 500–600 users connecting to Exchange, so 800 users exceeds that threshold and triggers the use of a second agent. BES automatically provisions this second agent to distribute the connection load across the Exchange mailbox infrastructure.

Option A (1) is wrong because 800 users surpasses the per-agent capacity limit, making a single-agent configuration insufficient for reliable performance. Options C, D, and E (3, 4, 5) are wrong because the user count of 800 doesn't come close to requiring that many agents - additional agents are only added as user counts continue to climb well beyond 800. The number of agents scales with users, not with the number of Exchange servers.

Memory tip: Think of BES agents like checkout lanes - one lane handles roughly 500 shoppers fine, but 800 shoppers need two lanes open. One Exchange server ≠ one agent; it's the user count that drives agent count.

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