20. What can tracer tokens measure in SQL Server 2005 Transactional Replication?
A. The time duration between a transaction being committed on the pub-
lisher and it being written to the distribution database
B. The amount of time a transaction is in the distribution database before all
subscribers receive it
C. The amount of time elapsed between a command being written to the
distribution database and being committed on a subscriber
D. A and C
The correct answer is D. Tracer tokens are to measure the latencies in
Transaction Replication. Tracer tokens are to measure:
How much time elapses between a transaction being committed at the
■Publisher and the corresponding command being inserted in the
distribution database at the Distributor.
How much time elapses between a command being inserted in the
distribution database and the corresponding transaction being committed
at a Subscriber.
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