Which two mechanisms avoid suboptimal routing in a network with dynamic mutual redistribution between multiple OSPFv2 and EIGRP boundaries? (Choose two.)

AD manipulation can bias route selection on a local router but does not stop routes from being redistributed back into their source domain, so routing loops can still form.

Matching OSPF external routes (E1/E2) is a classification technique used within route maps but is not sufficient on its own to prevent redistribution loops without a corresponding deny or tag action.

Route tagging stamps a numeric tag on routes at the point of redistribution; the receiving routing process can then match that tag in a route map and deny redistribution back into the original domain, cleanly breaking the feedback loop.

Route filtering using prefix-lists or distribute-lists at redistribution boundaries explicitly blocks specific prefixes from being redistributed back into the domain where they originated, directly preventing suboptimal or looping route propagation.

EIGRP process IDs are locally significant identifiers and cannot be carried in routing updates or used as a match criterion to identify or block routes at redistribution boundaries.