You must change a network design to include link-state topology summarization. Which two effects of route summarization should you be concerned about? (Choose two)

Packet reordering is caused by multipath load balancing or out-of-order delivery at the transport layer, not by route summarization.

Summarization forces downstream routers to select paths based on the aggregate prefix rather than each specific subnet, which can result in traffic taking a longer or less efficient path that would not have been chosen if the specific prefix were visible.

A router advertising a summary route may have one or more specific subnets within that summary become unreachable - because the summary continues to be advertised, other routers forward traffic toward those subnets where it is silently dropped, creating a black hole.

Route summarization improves scalability by reducing routing table size and limiting LSA propagation scope, making it a key tool for large link-state deployments rather than a hindrance.

Summarization improves convergence by containing topology change flooding within an area or policy boundary, reducing the number of routers that must recalculate routes after a change.