In order to achieve the best possible performance, management has requested that a pool of BlackBerry MDS Integration Services' be setup for use with the corporate Sales application. In order to…

Question

Options

• ACreate DNS records for the BlackBerry MDS Connection Pool
• BCreate DNS records for the BlackBerry MDS Integration Service
• CCreate a pool of BlackBerry MDS Connection Services
• DCreate a secondary pool of BlackBerry MDS Integration Service

• A
  14% (4)
• B
  75% (21)
• C
  4% (1)
• D
  7% (2)

Explanation

Option B is correct because DNS records for the BlackBerry MDS Integration Service must exist before a pool can be created - each service instance in the pool needs a resolvable network identity, and the pooling configuration references those DNS entries to locate and load-balance across the services.

Option A is wrong because you cannot create DNS records for a "Connection Pool" that doesn't exist yet; the pool is the end goal, not the prerequisite. Option C is wrong because it confuses two distinct components - the MDS Connection Service and the MDS Integration Service are separate roles, and pooling Connection Services does not satisfy the requirement for an Integration Service pool. Option D is wrong because a secondary pool presupposes a primary pool already exists; no pool of any kind has been established yet at this stage.

Memory tip: Think "DNS first, pool second" - you must give each Integration Service a resolvable name before the pool can reference it. If the services can't be found on the network, there's nothing to pool.

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