20 Questions
Which of the following can be propagated to a transit gateway route table for a VPC attachment?
Routes in the route table associated with the VPC
What can be associated with a route table in a transit gateway?
Attachments
Can the same attachment be associated with multiple TGW route tables?
No
What is used to propagate routes to other TGW route tables?
Route propagation
Which types of attachments have routes that can be installed in transit gateway route tables?
Both VPC and connect attachments
What happens when an attachment is propagated to a transit gateway route table?
Routes are installed in the route table
Which type of attachment advertises routes to third-party virtual devices through BGP?
Connect attachment
What type of routes are propagated to the transit gateway route table for a VPC attachment?
Routes in the route table associated with the VPC
What type of routes are advertised to the SD-WAN appliances running in a VPC through BGP?
Routes in the route table associated with the connect attachment
What is the purpose of route propagation in a transit gateway?
To propagate routes to other TGW route tables
Which type of traffic will use the Transit Gateway Attachment as the next hop, as shown in the example?
All traffic except 192.168.50.0/24 subnet traffic
What type of route table does the Transit Gateway create by default?
Transit Gateway default route table
What can you use the transit gateway default route table for?
Default association and propagation route table
What is one use case for creating additional route tables and disabling the default route table?
Isolating subsets of attachments and forcing traffic to flow through a certain attachment
What can transit gateway route tables propagate routes from?
Route tables for attached VPCs, VPN connections, and direct connect gateways
How are packets routed between attachments using transit gateway route tables?
Based on the route that matches the destination IP-address
How many attachments can be associated with a single route table?
Zero to many attachments
What is the purpose of associating a transit gateway attachment with a route table?
To enable the route table to forward packets to other attachments
What must be done to route traffic through a transit gateway when attaching a VPC to it?
Add routes to the subnet route table
What type of traffic will use the transit gateway attachment as the next hop, according to the example?
All traffic except 192.168.50.0/24 subnet traffic
Test your knowledge on routing in transit gateways and VPC attachments with this quiz. Learn about adding routes to subnet route tables and how traffic is routed through a transit gateway.
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