A BIG-IP Administrator needs to apply a health monitor for a pool of database servers named DB_Pool that uses TCP port 1521. Where should the BIG-IP Administrator apply this monitor?

Local Traffic > Profiles > Protocol > TCP is used for configuring protocol profiles, which define connection characteristics, not for applying health monitors to services.

While a monitor can be assigned to a node, applying it to the pool's properties is the preferred approach for monitoring the service provided by the pool members, offering more granularity and relevance to the pool's function.

Applying monitors at the individual pool member level (Local Traffic > Pools > DB_Pool > Members) is possible but typically reserved for scenarios where different members require unique monitoring configurations, rather than a uniform monitor for the entire pool.

Applying a health monitor directly to the Local Traffic > Pools > DB_Pool > Properties is the standard and most effective method, as it ensures all members within that specific pool are monitored consistently for their availability on TCP port 1521.