ANS-C01 Network Management and Operations Practice Question

Correct answer & explanation

Advertising the same prefixes with different prefix lengths allows AWS to prefer the more specific prefix, enabling path selection and load balancing while maintaining redundancy. Option C is correct because using a unique private ASN for each Direct Connect connection prevents BGP's AS_PATH loop detection from discarding routes when both connections advertise the same prefixes. Option E is correct because using different BGP community tags for each connection allows you to influence routing policies (e.g., via local preference) to control traffic flow. Option A is incorrect because advertising different prefixes on each connection compromises redundancy; if one connection fails, its prefixes become unreachable. Option D is incorrect because setting the same MED value on both connections provides no differentiation for path selection, whereas using different MED values can influence which connection is preferred.