Exam ANS-C00 topic 1 question 43 discussion

Agree with BC. https://docs.aws.amazon.com/solutions/latest/cisco-based-transit-vpc/appendix-a.html

B and C

Correct Answer BE

It is B and C

Auto failover meaning that it's Active/Passive

I will go with BC

B,C E is not right answer. Equal-cost multi-path routing (ECMP) is available with AWS Site-to-Site VPN on AWS Transit Gateway to help increase the traffic bandwidth over multiple paths. You can use ECMP to get higher VPN bandwidth, than the default VPN bandwidth limit of 1.25 Gbps, by aggregating multiple VPN connections.

B and C are correct. My first choice was E but I realize that this is failover config, not ECMP... | When you advertise prefixes and prepend ASN to them, you make the path less preferred, the path is removed from the routing table but remains in the topology table, then you have a route in the routing table (Active) and another route (Passive) in the topology table.

I go BC for Transit VPC If Transit Gateway then ans will be BE

B&C This link is good https://aws.amazon.com/blogs/networking-and-content-delivery/how-to-integrate-third-party-firewall-appliances-into-an-aws-environment/

I would go for B and C, you need to make one of the firewalls primary if not it will drop the traffic due to out of state packets. The way to do that is using AS Prepend

BE, https://aws.amazon.com/premiumsupport/knowledge-center/transit-gateway-ecmp-multiple-tunnels/

The answer is B & E

And since there are two stateful firewalls, I think ECMP will have its issues too. Going with B & C.

Automatic failover gives me the idea of active/passive configuration, that's why I think should be B-C

The challenge is to setup an automatic failover design which gave me the impression the traffic flow should be active/passive hence going for BC