Nextair Corporation has determined that the hardware running BlackBerry Enterprise Server software version 4.1.6 will be insufficient to handle version 5.0. They plan to perform a cutover upgrade…

Question

Options

• AThe SQL database can be hosted locally to the BlackBerry Enterprise Server
• BThe SQL database can be hosted on two separate Microsoft SQL Servers
• CBlackBerry device users are automatically migrated to BlackBerry Enterprise Server software
• DIn an emergency, it is easier to roll back to the previous version

• A
  13% (4)
• B
  3% (1)
• C
  10% (3)
• D
  73% (22)

Explanation

A cutover upgrade deploys the new BES 5.0 environment on entirely new hardware with a fresh SQL database, leaving the original BES 4.1.6 system untouched and fully operational throughout the process - this means if the new environment fails or causes issues, administrators can simply redirect users back to the old server with minimal disruption, making rollback straightforward. Option A is a distractor because local SQL database hosting is a general configuration choice, not something specific to or advantageous about the cutover strategy. Option B describes a high-availability SQL clustering feature of BES 5.0, which is unrelated to the upgrade method chosen. Option C is incorrect - and actually the opposite of true - because in a cutover upgrade, device users and their data must be manually migrated; nothing is automatic, which is one of the method's known trade-offs. Memory tip: Think of "cutover" as "build new, keep old" - since you never touch the original system, you always have a safe landing pad to fall back on, making rollback the defining advantage over an in-place upgrade.

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